Wall-mounted air conditioner

Abstract

The utility model discloses a wall-mounted air conditioner. The wall-mounted air conditioner comprises a main body, the main body comprises a machine shell, a base, a heat exchange fan and a first motor connected with the heat exchange fan. The wall-mounted air conditioner further comprises a second motor, a fresh air fan, an exhaust fan, a fresh air volute and an exhaust volute, and the first motor and the second motor are located at the two ends of the heat exchange fan in the length direction. The fresh air fan and the exhaust fan are both centrifugal fans with axial air inlet and radial air outlet, the fresh air fan is located on the side, away from the first motor, of the heat exchange fan, and the exhaust fan is located on the side, facing the second motor, of the fresh air fan. A stator part in the second motor is wound on the outer side of a rotor part, and the fresh air fan and the exhaust fan rotate synchronously. A stator part of the second motor is at least partially located on the side, away from the fresh air volute, of the exhaust air inlet. According to the wall-mounted air conditioner, on the premise that bidirectional air exchange is achieved, the length size of the main body is controlled, the exhaust air volume is guaranteed, and use safety and reliability are improved.

Description

Technical Field

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

[0002] With the advancement of technology and the improvement of people's living standards, air conditioners have gradually entered people's lives and become an indispensable item in people's work and life.

[0003] 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 fresh air intake and exhaust systems for ventilation. However, in current technology, multi-functional air conditioners are often quite bulky. Utility Model Content

[0004] This disclosure aims to at least address one of the technical problems existing in the related art. To this end, some embodiments of this disclosure propose a wall-mounted air conditioner that can control the length of the main body while simultaneously exhausting and drawing air into the room.

[0005] A wall-mounted air conditioner according to an embodiment of the present disclosure includes a main body.

[0006] The main body includes: a housing, the interior of which forms a cavity, and a heat exchange air inlet and a heat exchange air outlet formed on the housing; a base, disposed within the cavity, on which a volute air duct is formed; a heat exchange fan, disposed within the volute air duct, for drawing indoor air into the volute air duct through the heat exchange air inlet and blowing air from the volute air duct out of the heat exchange air outlet into the room when rotating; and a first motor, disposed within the cavity and located at one end of the length of the heat exchange fan, for driving the heat exchange fan to rotate.

[0007] The main body also includes a second motor, which is disposed in the accommodating cavity and is located at the other end of the heat exchange fan along its length.

[0008] The second motor includes: a rotor section; a stator section, which is arranged radially around the outside of the rotor section; and an output shaft, which is fixedly connected to the rotor section.

[0009] The main body also includes: a fresh air fan, which is a centrifugal fan with axial air intake and radial air outlet. The fresh air fan is located on the side of the heat exchange fan away from the first motor, and is fixedly connected to the output shaft of the second motor. The fresh air fan is located between the second motor and the heat exchange fan.

[0010] The main body also includes an exhaust fan, which is a centrifugal fan with axial air intake and radial air exhaust. Along the length of the main body, the exhaust fan is located on the side of the fresh air fan facing the second motor, and the exhaust fan is fixedly connected to the output shaft of the second motor. The fresh air fan is located between the exhaust fan and the heat exchange fan, and the second motor drives the fresh air fan and the exhaust fan to rotate synchronously during operation.

[0011] The main body also includes: a fresh air volute, a fresh air duct is formed inside the fresh air volute, a fresh air fan is installed inside the fresh air volute, and a fresh air inlet and a fresh air outlet are formed on the fresh air volute.

[0012] The main body also includes: an exhaust volute, located on the side of the fresh air volute facing the second motor, an exhaust duct is formed inside the exhaust volute, an exhaust fan is installed inside the exhaust volute, and an exhaust air inlet and an exhaust air outlet are formed on the exhaust volute.

[0013] The stator portion of the second motor is at least partially located on the side of the exhaust air inlet away from the fresh air volute.

[0014] According to some embodiments of the present disclosure, the wall-mounted air conditioner can control the length of the main body while simultaneously exhausting and absorbing air into the room.

[0015] By adopting a motor structure where the stator is wound around the outside of the rotor, the second motor not only has a simple structure and high output power, but also a compact structure, good dynamic balance, and high control precision. Therefore, for a given power, this type of motor can be selected in a smaller size, which helps to reduce the space occupied by the second motor in the flow channel.

[0016] Placing the fresh air fan on the side of the exhaust fan facing the indoor heat exchanger reduces heat loss and improves comfort when fresh air enters the room. For example, if the fresh air volute is close to the indoor heat exchanger, the fresh air drawn in from the outside absorbs heat released by the heat exchanger before entering the room, thus ensuring the fresh air is as close to the indoor temperature as possible. Conversely, if the exhaust volute is farther from the indoor heat exchanger, less heat is absorbed from the indoor air after being drawn in, resulting in less heat loss when exhausting outside.

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

[0018] At least part of the second motor is located on the side of the exhaust air inlet away from the fresh air volute, which can reduce the volume occupied by the second motor inside the fresh air volute, reduce the space occupied by the exhaust air duct, and ensure the exhaust air volume.

[0019] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a perspective view of the main body of a wall-mounted air conditioner according to some embodiments (part of the casing is hidden in the figure);

[0022] Figure 2 This is a front view of the main body of a wall-mounted air conditioner according to some embodiments (part of the casing is hidden in the figure).

[0023] Figure 3 This is an exploded view of the interior of the main body in one direction according to some embodiments (the heat exchange fan and the first motor are indicated by double-dotted lines in the figure).

[0024] Figure 4 This is a partial view of the interior of the body in another direction according to some embodiments;

[0025] Figure 5 This is a perspective view of a bidirectional ventilation assembly according to some embodiments;

[0026] Figure 6 This is another perspective view of a bidirectional ventilation assembly according to some embodiments;

[0027] Figure 7 A side view of a bidirectional ventilation assembly according to some embodiments;

[0028] Figure 8 A cross-sectional view of a bidirectional ventilation assembly according to some embodiments;

[0029] Figure 9 for Figure 8 A magnified view of a portion of the image;

[0030] Figure 10 A side view of a second motor with a fresh air fan and an exhaust fan according to some embodiments;

[0031] Figure 11 A perspective view of a second motor with a fresh air fan and an exhaust fan according to some embodiments;

[0032] Figure 12Another perspective view of the second motor with a fresh air fan and an exhaust fan according to some embodiments;

[0033] Figure 13 This is a perspective view of the housing in the rear view according to some embodiments.

[0034] Figure label:

[0035] Wall-mounted air conditioner 10000, main body 1000,

[0036] Housing 1, Receiving cavity V1,

[0037] Heat exchanger air inlet 101, heat exchanger air outlet 102, casing air inlet 103, first ventilation duct V04, pipe clearance opening 104, casing air outlet 105.

[0038] Indoor heat exchanger 2

[0039] Base 3, volute air duct V03, mounting side plate 35, center part 351, outer ring plate 352, annular air inlet 353, radial rib 354, mounting protrusion 355.

[0040] Heat exchange fan 41, first motor 42

[0041] Second motor 5, stator 51, rotor 52, output shaft 532, motor base 57, lock nut 58

[0042] Fresh air fan 6, fresh air wheel 61, wheel hole 612, fresh air blade 62, first fresh air blade 621, second fresh air blade 622, fresh air connecting bushing 67.

[0043] Exhaust fan 7, exhaust wheel 71, exhaust blade 72, blade side edge 721, straight section 7211, gradient section 7212, side edge recess 723, exhaust connecting shaft sleeve 77.

[0044] 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, fresh air grille 808.

[0045] First volute 81, first volute end plate 811, first volute surrounding plate 812, perforation portion 814.

[0046] Second volute 82, second volute half 821, axial ventilation port 8211, fan cover 822.

[0047] Exhaust volute 9, exhaust duct V02, exhaust inlet 901, exhaust outlet 902

[0048] Second volute casing plate 906

[0049] Air guide ring 91

[0050] Purification component 11, filter screen 111, fresh air inlet pipe 141, exhaust outlet pipe 142, air guide grille 16. Detailed Implementation

[0051] The embodiments are described in detail below, examples of which 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. In the description of the present invention, it should be understood that the terms "center," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present 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 limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise stated, "a plurality of" means two or more.

[0052] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0053] In some embodiments, a wall-mounted air conditioner 10000 is provided, which is an indoor unit. The wall-mounted air conditioner 10000 is typically installed on a wall, for example, in the upper area of ​​an interior wall.

[0054] The following description, with reference to the accompanying drawings, describes a wall-mounted air conditioner 10000 according to an embodiment of the present invention.

[0055] According to an embodiment of the present utility model, the wall-mounted air conditioner 10000, such as Figure 1 and Figure 2 As shown, it includes: main body 1000.

[0056] The main body 1000 includes: casing 1. For example... Figure 13As shown, the casing 1 has an internal cavity V1, and a heat exchange air inlet 101 and a heat exchange air outlet 102 are formed on the casing 1. The casing 1 serves a protective function and constitutes the overall external structure of the wall-mounted air conditioner 10000.

[0057] Reference Figure 3 The main body 1000 also includes: an indoor heat exchanger 2, which is located in the accommodating cavity V1.

[0058] Reference Figures 3-4 The main body 1000 also includes a base 3. The base 3 is located 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. Specifically, a volute air duct V03 is formed on the base 3. After the indoor air enters the casing 1, it is guided by the volute air duct V03 to ensure that the indoor air encounters less resistance when flowing through the indoor heat exchanger 2.

[0059] Reference Figure 3 The main body 1000 also includes a heat exchange fan 41, which is disposed within the volute air duct V03. In some embodiments, the heat exchange fan 41 may be 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, the use of a cross-flow fan, and the fact that the cross-flow fan is arranged along the length direction of the main body 1000, is beneficial to ensure that the driven airflow can flow through the entire indoor heat exchanger 2, ensuring the balance of heat exchange efficiency of each part of the indoor heat exchanger 2.

[0060] Reference Figure 3 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.

[0061] The casing 1 is equipped with a heat exchange outlet 102 and a heat exchange inlet 101. When the heat exchange fan 41 is running, it draws indoor air into the casing 1 through the heat exchange inlet 101. After heat exchange with the indoor heat exchanger 2, the heat-exchanged air is sent to the room through the heat exchange outlet 102.

[0062] In some embodiments, the heat exchange air inlet 101 is located above the heat exchange air outlet 102 in the height direction of the main body 1000, which facilitates air intake from above and air exhaust from below. In this application, the height direction of the main body 1000 is the vertical direction.

[0063] Reference Figure 1 and Figure 2The heat exchange air inlet 101 is located above the heat exchange air outlet 102. The heat exchange air inlet 101 can take in air from above, which can avoid taking in air from the heat exchange air outlet 102 and prevent the heat exchange air from being blown out of the heat exchange air outlet 102 and directly sucked into the heat exchange air inlet 101, thus reducing the process of heat exchange air idling without participating in the indoor heat exchange.

[0064] In some specific embodiments, the heat exchange air inlet 101 is located at the top of the housing 1, that is, in an area that the user cannot see. Hiding the heat exchange air inlet 101 can improve the aesthetic appearance.

[0065] In some embodiments, the heat exchange outlet 102 is located at the front of the housing 1, or the heat exchange outlet 102 is located on the front side of the housing 1 and near the bottom. In some embodiments, the heat exchange fan 41 is located on the side of the indoor heat exchanger 2 away from the heat exchange inlet 101. It is understood that the heat exchange fan 41 is a power drive component that drives the indoor air to exchange heat with the indoor heat exchanger 2 by rotation, and is also a power drive component for air delivery.

[0066] In some embodiments, such as Figure 3 As shown, the first motor 42 is located at one end along the length of the heat exchange fan 41. This facilitates the installation and maintenance of the first motor 42, and the main body 1000 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.

[0067] In some embodiments, such as Figure 3 and Figure 4 As shown, the wall-mounted air conditioner 10000 also includes a second motor 5, which is disposed within the accommodating cavity V1 and located at the other end of the length direction of the heat exchange fan 41. The first motor 42 and the second motor 5 are located at opposite ends of the length direction of the heat exchange fan 41. The two motors are far apart, resulting in minimal electromagnetic interference. The two motors and the heat exchange fan 41 are arranged along the length direction of the main body 1000, rather than along the thickness or height direction of the main body 1000, making the main body 1000 of the wall-mounted air conditioner 10000 slender and elongated in shape.

[0068] Specifically, refer to Figure 8 and Figure 9 The second motor 5 includes a stator 51 and a rotor 52, which together form the main body of the second motor 5. The stator 51 has wound coils that generate an alternating magnetic field when alternating current is applied, and the rotor 52 is induced and rotates in the alternating magnetic field.

[0069] Optionally, the rotor section 52 can be a magnetic ring or a magnetic tile. A magnetic ring is preferred for the rotor section 52, as it reduces leakage flux loss, enhances magnetic flux, and improves the power output efficiency of the second motor 5. Furthermore, using a magnetic ring results in a more uniform magnetic field distribution, better anti-interference performance, and higher mechanical precision.

[0070] In the radial direction of the rotor portion 52, the stator portion 51 is arranged around the outside of the rotor portion 52. The motor selected for the second motor 5 not only has a simple motor structure and high output power, but also has a compact structure, good dynamic balance, and high control precision. Therefore, when selecting this type of motor with a fixed power, a smaller size model can be chosen, which helps to reduce the space occupied by the second motor 5 in the flow channel.

[0071] Reference Figures 9-11 The second motor 5 also includes an output shaft 532, which is fixedly connected to the rotor portion 52. Specifically, the output shaft 532 extends along the axial direction of the second motor 5 toward the heat exchange fan 41. That is, the main body of the second motor 5 is spaced a certain distance from the heat exchange fan 41 to reduce the vibration transmitted from the operation of the second motor 5 to the heat exchange fan 41.

[0072] Reference Figure 8 The wall-mounted air conditioner 10000 also includes a fresh air fan 6, which is a centrifugal fan with axial air intake and radial air outlet. The fresh air fan 6 is located on the side of the heat exchange fan 41 away from the first motor 42. The fresh air fan 6 is located between the heat exchange fan 41 and the main body of the second motor 5, and the fresh air fan 6 is fixedly connected to the output shaft 532 of the second motor 5. That is to say, the fresh air fan 6 and the output shaft 532 of the second motor 5 rotate synchronously, and there is no rotational movement between them. Of course, the connection between the fresh air fan 6 and the output shaft 532 of the second motor 5 can be detachable or non-detachable; there is no limitation here.

[0073] Among them, the fresh air fan 6 is located between the second motor 5 and the heat exchange fan 41.

[0074] Reference Figure 8 The wall-mounted air conditioner 10000 also includes an exhaust fan 7, which is a centrifugal fan with axial air intake and radial air outlet. Along the length of the heat exchange fan 41, the exhaust fan 7 is located on the side of the fresh air fan 6 facing the second motor 5, and the exhaust fan 7 is fixedly connected to the output shaft 532 of the second motor 5. That is, the exhaust fan 7 and the output shaft 532 of the second motor 5 rotate synchronously, with no rotational movement between them. Of course, the connection between the exhaust fan 7 and the output shaft 532 of the second motor 5 can be detachable or non-detachable; this is not limited here.

[0075] The fresh air fan 6 is located between the exhaust fan 7 and the heat exchange fan 41, and the second motor 5 drives the fresh air fan 6 and the exhaust fan 7 to rotate synchronously when in operation.

[0076] Centrifugal fans are characterized by their compact structure, large air volume, and high static pressure. They can provide sufficient pressure to ensure smooth air delivery through long pipes or ducts with many bends. Therefore, smaller centrifugal fans can be selected for fresh air fans 6 and exhaust fans 7 to meet the demand for large air volume.

[0077] Both the fresh air fan 6 and the exhaust fan 7 are centrifugal fans, which can also reasonably arrange the airflow direction of the fresh air fan 6 and the exhaust fan 7.

[0078] Specifically, the fresh air fan 6 draws in air axially and exits air radially, while the exhaust fan 7 draws in air axially and exits air radially. Both the fresh air fan 6 and the exhaust fan 7 draw in air from opposite ends, and then both are driven to exit radially. The flow paths of the fresh air and exhaust air do not need to overlap axially, and their paths do not need to intersect. This helps reduce the need for cornering designs in the fresh air and exhaust paths, reducing wind resistance and energy consumption, ensuring airflow, and lowering noise.

[0079] Reference Figures 5-8 The wall-mounted air conditioner 10000 also includes: a fresh air volute 8, a fresh air duct V01 formed inside the fresh air volute 8, a fresh air fan 6 installed inside the fresh air volute 8, and a fresh air inlet 801 and a fresh air outlet 802 formed on the fresh air volute 8. The rotation of the fresh air fan 6 allows outdoor air to enter the fresh air volute 8 through the fresh air inlet 801, and allows outdoor air entering the fresh air volute 8 to enter the room through the fresh air outlet 802.

[0080] Reference Figures 5-8 The wall-mounted air conditioner 10000 also includes: an exhaust volute 9, located on the side of the fresh air volute 8 facing the second motor 5; an exhaust duct V02 formed inside the exhaust volute 9; an exhaust fan 7 installed inside the exhaust volute 9; and an exhaust air inlet 901 and an exhaust air outlet 902 formed on the exhaust volute 9. Rotation of the exhaust fan 7 allows indoor air to enter the exhaust volute 9 through the exhaust air inlet 901 and allows indoor air entering the exhaust volute 9 to be exhausted to the outside through the exhaust air outlet 902.

[0081] Reference Figure 8 and Figure 9 The stator 51 of the second motor 5 is at least partially located on the side of the exhaust air inlet 901 away from the fresh air volute 8. In other words, at least part of the second motor 5 is located outside the exhaust volute 9, which reduces the volume occupied by the second motor 5 in the exhaust air duct V02, thereby ensuring the exhaust air volume.

[0082] In some embodiments, the fresh air volute 8 and the fresh air fan 6 constitute a fresh air module. The fresh air fan 6 is disposed within the fresh air duct V01 and drives airflow to be drawn in from the fresh air inlet 801 and exhausted 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. Thus, by configuring the fresh air duct V01 and the fresh air fan 6 in conjunction, when the indoor air is relatively polluted or the air quality is average, the fresh air fan 6 can drive relatively fresh outdoor air into the indoor environment to improve the indoor airflow environment.

[0083] In some embodiments, the exhaust volute 9 and the exhaust fan 7 constitute an exhaust module. The exhaust fan 7 is disposed within the exhaust duct V02 and is used to drive airflow to be drawn in from the exhaust inlet 901 and discharged from the room through the exhaust outlet 902. The operation of the exhaust fan 7 provides the power for the flow of stale air.

[0084] The second motor 5, the fresh air fan 6, the exhaust fan 7, the fresh air volute 8, and the exhaust volute 9 constitute a two-way ventilation assembly, which is installed within the main body 1000. The two-way ventilation assembly can provide fresh air to the room and exhaust indoor air to the outside.

[0085] It should be noted that the operating mode of the bidirectional ventilation component in the wall-mounted air conditioner 10000 can be set according to actual usage needs. In some embodiments, the bidirectional ventilation component can operate in both fresh air mode and exhaust air mode simultaneously, that is, the fresh air duct V01 and the exhaust air duct V02 can be opened at the same time, so that while the indoor stale airflow flows to the outdoor space, the outdoor fresh airflow can also enter the indoor space, driven by the combination of inlet and outlet airflow.

[0086] Furthermore, because it simultaneously exhausts indoor air and replenishes it with fresh outdoor air, maintaining a sufficient indoor air volume, it makes removing indoor air easier. For example, if there are irritating gases (such as those released from home decoration materials), gas, or other gas leaks indoors, a two-way ventilation system can be installed to operate in both fresh air and exhaust modes simultaneously, achieving rapid air exchange. Compared to conventional fresh air systems that simply introduce fresh air, this two-way ventilation system has a larger purification flow rate per unit time, higher ventilation efficiency, and faster purification effect.

[0087] During ventilation, avoid rapid air exchange like opening a window, which could cause drastic changes in indoor temperature and discomfort to occupants due to sudden temperature rises or drops. Furthermore, the main structure is positioned at a relatively high elevation, ensuring that ventilation points are not too close to people and could not cause discomfort.

[0088] In other embodiments, the bidirectional ventilation component can selectively operate in either a fresh air mode or an exhaust mode. That is, when the bidirectional ventilation component is in fresh air mode, the exhaust mode is turned off, and only the fresh air duct V01 is ventilated, while the exhaust duct V02 is not ventilated. Alternatively, when the bidirectional ventilation component is in exhaust mode, the fresh air mode is turned off, and in this case, the fresh air duct V01 is not ventilated, while the exhaust duct V02 is ventilated.

[0089] In some embodiments, the wall-mounted air conditioner 10000 is equipped with a two-way ventilation assembly, such as... Figure 8 As shown, the bidirectional ventilation assembly includes: a second motor 5, a fresh air fan 6, an exhaust fan 7, a fresh air volute 8, and an exhaust volute 9.

[0090] Since the bidirectional ventilation component needs to be installed inside the wall-mounted air conditioner 10000, and the wall-mounted air conditioner 10000 has size and weight limitations due to wall mounting, in order to avoid excessive increase in size and weight of the wall-mounted air conditioner 10000 after adding the bidirectional ventilation component, this application has made many restrictions and optimizations in the design of the bidirectional ventilation component, so that the completed wall-mounted air conditioner 10000 has practical use and promotion value.

[0091] In this embodiment, the second motor 5 is located at the end of the heat exchange fan 41 along its length, and the axial direction of the second motor 5 is arranged along the length of the heat exchange fan 41. The second motor 5 serves as the common power source for both the fresh air module and the exhaust air module of the bidirectional ventilation assembly. To ensure the operation of both the fresh air module and the exhaust air module, the second motor 5 needs sufficient operating power to drive a sufficient airflow. Based on the power requirements of the second motor 5, the second motor 5 needs to be of a sufficiently large size.

[0092] In this embodiment, given that the dimensions of the second motor 5 are roughly determined, the arrangement of the fresh air module and the exhaust module considers how to utilize the space occupied by the second motor 5 while minimizing the amount of additional space required. Specifically, in this embodiment, both the fresh air fan 6 and the exhaust fan 7 are centrifugal fans connected to the same motor. This not only saves on the number of motors but also ensures that the two centrifugal fans are stacked along the axial direction of the second motor 5, that is, stacked along the length of the main body 1000.

[0093] In this embodiment, the centrifugal fan itself is relatively flat in the axial direction. The stacking of the fresh air fan 6 and the exhaust fan 7 reduces the overall axial dimension, so the length of the main body 1000 does not need to be too long. Since the fresh air fan 6 and the exhaust fan 7 are connected to the same motor and rotate synchronously, they are in sync and do not need to be separated by a large gap. The axial distance between the fresh air fan 6 and the exhaust fan 7 can be arranged to be relatively close.

[0094] It should be noted that when referring to "axial", "radial", and "circumferential", the axial, radial, and circumferential directions of the motor are used as the reference. That is, the direction parallel to the extension direction of the output shaft 532 of the second motor 5 is the axial direction, the direction perpendicular to the extension direction of the output shaft 532 is the radial direction, and the direction around the output shaft 532 is the circumferential direction.

[0095] In some embodiments, indoor air is exhausted outdoors through an exhaust module. By setting the exhaust air volume to be less than the fresh air volume, cooling loss can be reduced. Therefore, placing the second motor 5 on the side of the exhaust duct V02 furthest from the fresh air duct V01 helps reduce air intake obstruction in the fresh air duct V01 and ensures a larger fresh air volume. Simultaneously, the main body of the second motor 5 can be at least partially located outside the exhaust duct V02 to guarantee the exhaust air volume.

[0096] In this embodiment, the fresh air module and exhaust module are effectively integrated, allowing both modules to utilize their respective structural and spatial characteristics to achieve a flat design. This not only reduces the overall size and weight of the bidirectional ventilation component, making it lighter and ensuring that the air ducts do not interfere with each other, but also minimizes the overall size and weight of the bidirectional ventilation component. The bidirectional ventilation component is located at one end of the length of the heat exchange fan 41. Compared to the main body without the bidirectional heat exchange component, only the lateral length is increased. The height and thickness of the main body 1000 can remain largely unchanged or only slightly altered, making the main body 1000 as flat as possible. This prevents it from being too obtrusive when mounted on the wall, thus avoiding any impact on the indoor space layout and reducing the risk of it falling off the wall due to excessive weight. The wall-mounted air conditioner 10000 remains a flat unit overall, making it aesthetically pleasing and with a manageable weight when mounted on the wall.

[0097] In some embodiments, the fresh air inlet 801 is located below the body 1000 in the height direction. It is understood that the fresh air inlet 801 needs to be connected to a duct to introduce outdoor air; this duct is referred to here as the fresh air inlet pipe 141 (e.g., Figure 2 (As shown). 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 that the user configures separately after purchasing the wall-mounted air conditioner 10000.

[0098] The fresh air inlet 801 is positioned below the main body 1000, allowing the fresh air inlet pipe 141 to connect to it from below. The connection extends roughly vertically rather than front-to-back, preventing the main body 1000 from becoming too thick. This allows the wall-mounted air conditioner 10000 to maintain a flat shape. Furthermore, the portion of the fresh air volute 8 that houses the fresh air fan 6 is circular. Since the axis of the fresh air volute 8 extends along the length of the main body 1000, there is free space on both the front and rear sides of the bottom. This space can be used to position the fresh air inlet 801 to connect to the fresh air inlet pipe 141. 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, thus controlling the height of the main body 1000.

[0099] In some embodiments, the exhaust outlet 902 is located below the main body 1000 in the height direction. It is understood that the exhaust outlet 902 needs to be connected to a duct to guide indoor air to the outside; this duct is referred to here as the exhaust outlet pipe 142 (e.g., Figure 2 (As shown). The exhaust pipe 142 can be a part of the wall-mounted air conditioner 10000, or it can be an exhaust pipe 142 that the user configures separately after purchasing the wall-mounted air conditioner 10000.

[0100] The exhaust outlet 902 is positioned below the main body 1000, allowing the exhaust pipe 142 to connect to it from below. The connection point extends generally vertically, rather than horizontally, to avoid making the main body 1000 too thick, thus maintaining the flat shape of the wall-mounted air conditioner 10000. Furthermore, the portion of the exhaust volute 9 housing the exhaust fan 7 is circular. Since the axis of the exhaust volute 9 extends along the length of the main body 1000, this circular shape provides space on both the front and rear sides of the bottom. Given the axial intake and radial exhaust characteristics of the exhaust fan 7, the diffuser section of the exhaust volute 9 can be arranged generally vertically and placed within the aforementioned front or rear space. The exhaust outlet 902 is positioned here to connect to the exhaust pipe 142, allowing the connection between the exhaust pipe 142 and the exhaust outlet 902 to be placed within this space without requiring additional space, thus controlling the height of the main body 1000.

[0101] In some embodiments, refer to Figure 3 and Figure 4 The base 3 may include: a mounting side plate 35, which is located at the end of the base 3 away from the first motor 42, and a second motor 5 is located on the side of the mounting side plate 35 facing the heat exchange fan 41 and is mounted on the mounting side plate 35.

[0102] By forming a mounting side plate 35 on the base 3, the second motor 5 is mounted on the base 3. The vibration generated by the second motor 5 during operation is transmitted to the entire base 3, allowing the impact of the vibration to be dispersed and absorbed through the entire base 3, thereby helping to reduce the vibration generated by the second motor 5. In addition, the high overall rigidity of the base 3 can be utilized to increase the support for the second motor 5, which helps to reduce the vibration generated by the second motor 5 during operation. Therefore, it is beneficial to reduce the overall operating noise.

[0103] In some specific embodiments, such as Figure 4 As shown, the mounting side plate 35 may include: a central portion 351, an outer ring plate 352, and radial ribs 354. The central portion 351 is disposed corresponding to the exhaust air inlet 901, the outer ring plate 352 is disposed around the central portion 351, and an annular air inlet 353 is defined between the outer ring plate 352 and the central portion 351, and the radial ribs 354 connect the central portion 351 and the outer ring plate 352.

[0104] The side plate 35 is positioned upstream of the exhaust air inlet 901, forming an annular air inlet 353. The annular air inlet 353 is directly opposite the exhaust air inlet 901. Since the exhaust fan 7 is a centrifugal impeller, this annular air inlet 353 helps to guide the airflow into an annular shape before it enters the exhaust air inlet 901, thus facilitating axial air intake and radial air exhaust after entering the exhaust fan 7, thereby reducing airflow resistance.

[0105] Here, the annular air inlet 353 can be circular or other shapes, with a circular shape being the preferred choice.

[0106] Optionally, the radial ribs 354 can be straight or curved. There are multiple radial ribs 354, which are distributed at intervals around the central part 351, thereby improving the support reliability of the central part 351 and increasing the overall stiffness.

[0107] Specifically, the second motor 5 is mounted on at least one of the central part 351, the outer ring plate 352, and the radial rib 354.

[0108] Furthermore, such as Figure 4 and Figure 5 As shown, the second motor 5 may further include a motor mount 57, which is located radially outside the output shaft 532 and connected to the stator portion 51. That is, the mounting position of the second motor 5 is located on the side of the stator portion 51 facing the two discs. This arrangement ensures that the two discs are close to the mounting position of the second motor 5, resulting in smaller bending moments and torques relative to the mounting position, which helps reduce the shaking generated during the operation of the fresh air fan 6 and the exhaust fan 7.

[0109] Specifically, refer to Figure 4The mounting side plate 35 may further include mounting protrusions 355, which are located on the side of the outer ring plate 352 facing the exhaust volute 9. Multiple mounting protrusions 355 are spaced apart around the center portion 351. The motor mount 57 is connected to the multiple mounting protrusions 355. This improves the support for the second motor 5.

[0110] In some embodiments, such as Figure 8 and Figure 9 As shown, the exhaust fan 7 includes an exhaust connecting sleeve 77 located at the center, which extends axially along the exhaust fan 7. The exhaust connecting sleeve 77 is externally connected to the output shaft 532, and one end of the exhaust connecting sleeve 77 is located inside the fresh air duct V01 and abuts against the fresh air fan 6.

[0111] Specifically, such as Figure 8 As shown, the fresh air volute 8 has a perforated part 814 on the side wall facing the exhaust volute 9, and one end of the exhaust connecting bushing 77 passes through the perforated part 814 and extends into the fresh air duct V01.

[0112] The exhaust connecting bushing 77 on the exhaust fan 7 increases the contact area with the output shaft 532, thereby improving the driving capability of the output shaft 532 on the exhaust fan 7 when it rotates. On the other hand, the longer exhaust connecting bushing 77 can be used to achieve positioning with the fresh air fan 6, reducing the difficulty of positioning.

[0113] like Figure 9 As shown, the fresh air fan 6 includes a centrally located fresh air connecting sleeve 67, which extends axially along the fresh air fan 6 and is externally connected to the output shaft 532. The fresh air connecting sleeve 67 on the fresh air fan 6 increases the contact area with the output shaft 532, improving the driving capability of the output shaft 532 when it rotates. Furthermore, the longer fresh air connecting sleeve 67 facilitates axial positioning, reducing positioning difficulty.

[0114] Furthermore, such as Figure 11 As shown, the bidirectional ventilation assembly also includes a locking nut 58, which is threaded onto the output shaft 532 and abuts against the fresh air connection sleeve 67, thereby achieving axial positioning of the fresh air fan 6 and the exhaust fan 7.

[0115] In some embodiments, such as Figure 10 As shown, the outer diameter D1 of the fresh air fan 6 is larger than the outer diameter D2 of the exhaust fan 7 to ensure that the fresh air volume is greater than the exhaust air volume.

[0116] Suitable, such as Figure 6As shown, the fresh air volute 8 includes a first volute enclosure 812 surrounding the radially outer side of the fresh air fan 6, and the exhaust volute 9 includes a second volute enclosure 906 surrounding the radially outer side of the exhaust fan 7. The diameter of the first volute enclosure 812 is larger than the diameter of the second volute enclosure 906. This allows for a compact assembly, reducing the overall space required.

[0117] 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.

[0118] Furthermore, in the height direction of the main body 1000, the fresh air inlet 801 is located below the main body 1000, and in the length direction of the main body 1000, the fresh air outlet 802 is located between the exhaust outlet 902 and the fresh air inlet 801. This arrangement ensures that the connecting pipes of the fresh air outlet 802, exhaust outlet 902, and fresh air inlet 801 are compact, which helps to reduce the overall size.

[0119] In some embodiments, such as Figure 1 As shown, the housing 1 is provided with a housing air outlet 105, which corresponds to the fresh air outlet 802.

[0120] In some embodiments, such as Figures 8-12 As shown, the exhaust fan 7 includes an exhaust wheel 71 and exhaust blades 72. The exhaust blades 72 are located on the outer edge of the exhaust wheel 71 and extend along the axial direction of the exhaust wheel 71 in a direction away from the fresh air fan 6. This simplifies the structure of the exhaust fan 7 and makes full use of the space on the windward side of the exhaust fan 7.

[0121] Reference Figures 5-8 The fresh air volute 8 includes a first volute 81 and a second volute 82. The first volute 81 is located on the side of the exhaust volute 9 facing the heat exchange fan 41, and 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 facing the heat exchange fan 41, and the second volute 82 is detachably connected to the first volute 81. The first volute 81 is located between the exhaust volute 9 and the second volute 82.

[0122] Reference Figure 5 The first volute 81 includes a first volute end plate 811 and a first volute surrounding plate 812, with the first volute surrounding plate 812 extending along the edge of the first volute end plate 811 toward the heat exchange fan 41.

[0123] In some embodiments, to make the wall-mounted air conditioner 10000 safer and more reliable, the external dimensions of the main body 1000 are strictly controlled. This not only makes the gaps between internal parts smaller and less prone to loosening, but also allows for shorter air ducts and a smaller casing 1, thereby reducing the overall weight of the main body 1000, making it safer to mount on the wall, and giving it a slimmer appearance.

[0124] When controlling the dimensions of the main body 1000, the key is to reduce the structural dimensions of the bidirectional ventilation assembly. The most important thing to ensure in the bidirectional ventilation assembly is that the second motor 5 can output sufficient power to meet the requirements of exhaust air volume and fresh air volume. Therefore, the thickness of the second motor 5, especially the total axial thickness of the stator 51, rotor 52 and the second motor 5, needs to be large enough. The total axial thickness of the stator 51, rotor 52 and the second motor 5 is greater than the axial thickness of the main body of the exhaust fan 7.

[0125] In some embodiments, refer to Figure 8 The exhaust volute 9 and the fresh air volute 8 are connected, sharing a first volute end plate 811, which separates the fresh air duct V01 and the exhaust air duct V02. This arrangement eliminates the need for a gap between the exhaust volute 9 and the fresh air volute 8, further reducing the axial dimension of the bidirectional ventilation assembly and minimizing its space occupation within the wall-mounted air conditioner 10000, thus facilitating the overall flattened design of the wall-mounted air conditioner 10000.

[0126] Optionally, the first volute end plate 811 is a single-layer plate, which simplifies the structure and helps to reduce the overall axial dimension.

[0127] In some embodiments, refer to Figures 8-12 The exhaust fan 7 includes an exhaust wheel 71 and exhaust blades 72. The exhaust wheel 71 is coaxially mounted with the second motor 5 and connected to the output shaft 532 of the second motor 5. Multiple exhaust blades 72 are mounted on the exhaust wheel 71 and extend only in a direction away from the fresh air fan 6. These multiple exhaust blades 72 are arranged circumferentially on the exhaust wheel 71. In other words, the exhaust fan 7 includes a single layer of centrifugal blades, thus achieving a simple structure and low cost while meeting the requirements for small air volumes. Furthermore, the blade cylinder formed by the circumferential arrangement of the exhaust blades 72 is open at the axial air intake end, facilitating airflow intake, reducing suction resistance, and ensuring sufficient exhaust airflow.

[0128] In some embodiments, refer to Figures 8-10 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.

[0129] Specifically, the fresh air impeller 61 is coaxially arranged with the second motor 5 and connected to the output shaft 532 of the second motor 5. The fresh air blades 62 include first fresh air blades 621, which extend from the fresh air impeller 61 in a direction away from the exhaust fan 7. The blade tube formed by the circumferential arrangement of the first fresh air blades 621 is open at the axial air intake end, which facilitates airflow intake, reduces airflow resistance, and ensures the intake volume of fresh air.

[0130] Specifically, refer to Figures 8-12 The fresh air blade 62 may include a second fresh air blade 622, which extends from the fresh air impeller 61 toward the exhaust fan 7. Thus, the fresh air fan 6 includes double-layer centrifugal blades, and this double-layer centrifugal blade structure helps increase the overall structural strength of the centrifugal fan while meeting high airflow requirements.

[0131] Furthermore, along the axial direction of the fresh air fan 6, the length h12 of the second fresh air blade 622 is less than the length h11 of the first fresh air blade 621. Here, the first fresh air blade 621 faces the axial air intake end, therefore its axial length is greater, which is beneficial for obtaining a larger fresh air intake volume using the first fresh air blade 621. The shorter second fresh air blade 622 is used to supplement the fresh air intake. Moreover, the longer first fresh air blade 621 on the windward side helps to reduce noise while ensuring sufficient fresh air volume.

[0132] More specifically, the fresh air blade 62 includes: a first fresh air blade 621 and a second fresh air blade 622, the first fresh air blade 621 extending from the fresh air wheel 61 toward a direction away from the exhaust fan 7, and the second fresh air blade 622 extending from the fresh air wheel 61 toward a direction closer to the exhaust fan 7.

[0133] Furthermore, such as Figure 11 As shown, a disc hole 612 is formed on the fresh air impeller 61, through which air is drawn in by one side of the second fresh air blade 622. 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. In other words, the disc hole 612 is closer to the center of the fresh air impeller 61 than the fresh air blade 62. This is beneficial for guiding the airflow axially into the space where the second fresh air blade 622 is located when it draws in air from the disc hole 612, reducing the turbulence caused by competition with the first fresh air blade 621.

[0134] In some specific embodiments, reference is made to Figure 5 , Figure 6 and Figure 8The second volute 82 includes a second volute half 821 and a fan cover 822. The second volute half 821 is located on the side of the first volute 81 facing the heat exchange fan 41, and the second volute half 821 is detachably connected to the first volute 81. The second volute half 821 has an axial ventilation port 8211 at its center in the radial direction. A volute cavity V011 is formed between the second volute half 821 and the first volute 81. The fresh air fan 6 is located in the volute cavity V011, and the axial air inlet end of the fresh air fan 6 is arranged facing the axial ventilation port 8211. The second volute half 821 and the first volute 81 surround a fresh air outlet 802.

[0135] The fan cover 822 is located on the side of the second volute half 821 facing the heat exchange fan 41, and the fan cover 822 is detachably connected to the second volute half 821. (Refer to...) Figure 8 The cavity enclosed by the fan cover 822 and the second volute half 821 is the fresh air cavity V012, and the fresh air inlet 801 is enclosed by the fan cover 822 and the second volute half 821.

[0136] With this configuration, a fresh air cavity V012 is formed at the air inlet end of the fresh air fan 6. The fresh air cavity V012 formed in this way can cover the axial air inlet end of the fresh air fan 6. The fresh air cavity V012 can be used to contain air, so that air can enter the fresh air fan 6 axially from the fresh air cavity V012, thereby improving the air intake efficiency of the fresh air fan 6 and reducing air intake loss.

[0137] The fan shroud 822 is located on the side of the second volute half 821 facing the indoor heat exchanger 2, thus separating the volute cavity V011 from the indoor heat exchanger 2. When the indoor heat exchanger 2 is cooling, it absorbs heat from the fresh air cavity V012, gradually lowering the fresh air temperature. Because of the separation provided by the fan shroud 822, the indoor heat exchanger 2 is farther from the volute cavity V011, reducing the cooling capacity of the indoor heat exchanger 2 on the air inside the volute cavity V011, making it less prone to overcooling and condensation.

[0138] In this way, even if the incoming fresh air is cooled, it will not become too cold and produce condensation. Furthermore, even if condensation occurs in the fresh air cavity V012, the condensate tends to remain within V012 and is less likely to enter the volute cavity V011 and be blown into the room, thus preventing water from being blown out of the fresh air module. When the indoor heat exchanger 2 is heating, it absorbs the cold air from the fresh air cavity V012, gradually increasing the fresh air temperature. The heated air then enters the volute cavity V011 and mixes thoroughly, resulting in warmer air being blown out of the fresh air module.

[0139] In some embodiments, reference is made to Figure 8The fresh air duct V01 includes a volute cavity V011 and a fresh air cavity V012. The fresh air fan 6 is located inside the volute cavity V011, and the fresh air cavity V012 is located on the side of the volute cavity V011 facing the heat exchange fan 41. By separating the fresh air cavity V012 in this way, air handling components can be installed inside the fresh air cavity V012 to increase the fresh air handling capacity.

[0140] Specifically, the fresh air volute 8 includes a fresh air grille 808 that is placed between the volute cavity V011 and the fresh air cavity V012, which protects the fresh air fan 6 and prevents impurities from being drawn into the fresh air fan 6 and causing damage.

[0141] In some embodiments, refer to Figures 1-3 The wall-mounted air conditioner 10000 may include: purification component 11, see reference. Figure 8 The purification component 11 is installed inside the fresh air duct V01, thus purifying the fresh air blown into the room and improving the cleanliness of the indoor air. Specifically, the purification component 11 is installed inside the fresh air chamber V012, that is, the purification component 11 is located at the axial air intake end of the fresh air fan 6. The rotation of the fresh air fan 6 allows outdoor air to enter the fresh air volute 8 from the fresh air inlet 801, and allows the outdoor air entering the fresh air volute 8 to be blown through the purification component 11, and then enter the room from the fresh air outlet 802.

[0142] In this way, the fresh airflow can blow almost vertically over the purification component 11, further reducing the consumption of fresh air intake and thus increasing the fresh air volume. Moreover, when the indoor heat exchanger 2 is in cooling mode, causing condensation to form in the fresh air, the condensation can remain on the purification component 11 as the air flows through it, further preventing water from being blown out when the fresh air module exits.

[0143] Furthermore, the purification component 11 is connected to the second volute 82, which facilitates the assembly of the purification component 11 and prevents it from interfering with the fresh air fan 6.

[0144] Optionally, 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. Optionally, the filter 111 is a HEPA filter, thus possessing strong adsorption capacity and excellent dust filtration effect.

[0145] Optionally, the filter screen 111 is plate-shaped, which makes the filter screen 111 relatively thin and will not occupy too much space when placed in the two-way ventilation assembly. Optionally, the filter screen 111 is square, which facilitates the positioning and installation of the filter screen 111.

[0146] Furthermore, the filter screen 111 is a square mesh, with its side length exceeding the diameter of the axial vent 8211. The square mesh facilitates positioning during installation, prevents wobbling after installation, and is easy to process with minimal waste. By ensuring the side length of the filter screen 111 is greater than the diameter of the axial vent 8211, all fresh air entering the axial vent 8211 can pass through the filter screen 111, resulting in high filtration cleanliness.

[0147] Furthermore, referring 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.

[0148] In other words, the purification component 11 is installed in the fresh air cavity V012 near the fresh air fan 6, and the part of the fresh air cavity V012 away from the fresh air fan 6 is the cavity V0121. That is, the cavity V0121 is between the oncoming air of the purification component 11 and the inner surface of the fan cover 822. In this way, when the fresh air fan 6 is running, the cavity V0121 is in a negative pressure state, so that the airflow can automatically flow into the cavity V0121 from the fresh air inlet 801, reducing the air flow resistance.

[0149] In this way, while increasing the air intake volume of the fresh air module, it also improves the overall air intake reliability and stability.

[0150] When the fresh air volute 8 and the indoor heat exchanger 2 are brought closer together, the cooling or heating energy of the indoor heat exchanger 2 can be absorbed by the fresh air inside the fresh air volute 8, making the incoming fresh air closer to room temperature and more gentle.

[0151] In some embodiments, refer to Figures 5-6 The fresh air volute 8 is also equipped with an installation port 803, and the purification component 11 can be detachably installed in the installation port 803. This makes it convenient to remove the purification component 11 when it is damaged or saturated, so as to facilitate maintenance or replacement.

[0152] Specifically, such as Figure 5 and Figure 8 As shown, the mounting port 803 is formed between the fan cover 822 and the second volute half 821. The purification component 11 can be detachably assembled into the fresh air cavity V012 through the mounting port 803. This allows the mounting port 803 to be set to a larger size, facilitating the installation of larger purification components 11. When the mounting port 803 is larger, it is formed by the fan cover 822 and the second volute half 821, with open half-openings on both sides, facilitating processing or demolding and resulting in a low scrap rate.

[0153] Specifically, such as Figure 3As shown, in the front-rear direction of the main body, the mounting port 803 is located on the front side of the main body 1000. When the purification component 11 is disassembled, it is not affected by the pipes connected to the fresh air inlet 801 and the exhaust outlet 902, which facilitates the disassembly operation. Optionally, the front side of the housing 1 is provided with an openable panel (not shown in the figure). When the panel is opened or rotated upward, the mounting port 803 can be exposed, which facilitates the disassembly of the purification component 11.

[0154] It is also possible that in some designs, the mounting port 803 will be located at the bottom of the main body 1000.

[0155] In some embodiments, such as Figure 3 and Figure 4 As shown, the exhaust volute 9 includes an air guide ring 91. (As indicated...) Figure 8 As shown, the end of the air guide ring 91 facing the fresh air fan 6 forms the exhaust air inlet 901. The air guide ring 91 can effectively collect the dispersed airflow and converge it into a more concentrated airflow to be sent into the exhaust fan 7, making the air intake smoother and more efficient, and increasing the air intake volume of the exhaust fan 7.

[0156] Furthermore, the air guide ring 91, with its rationally designed shape and angle, allows airflow to enter the exhaust blades 72 of the exhaust fan 7 at the optimal angle, improving the working efficiency of the exhaust fan 7. When unstable airflow fluctuations are drawn in, the air guide ring 91 can stabilize the airflow, reducing turbulence and fluctuations, allowing the exhaust fan 7 to operate more smoothly. This also reduces noise and vibration, extending the service life of the exhaust fan 7.

[0157] Specifically, the air guide ring 91 is a round tube shape, which is easy to process.

[0158] Specifically, the diameter of the air guide ring 91 gradually decreases in the direction towards the heat exchange exhaust fan 7. As the diameter of the air guide ring 91 gradually decreases, the channel through which the 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 air volume. The gradually decreasing diameter of the air guide ring 91 also helps to concentrate the relatively dispersed airflow upstream, allowing the airflow to blow directly onto the center of the exhaust fan 7. The concentrated airflow is more energy-efficient when driven radially by the exhaust blades 71, and the concentrated airflow also contributes to the stability of the airflow.

[0159] In some specific embodiments, such as Figure 8As shown, at least a portion of the stator 51 and at least a portion of the rotor 52 are located within the area enclosed by the air guide ring 91. Thus, the main body of the second motor 5 is at least partially housed within the air guide ring 91. This reduces the axial dimension occupied by the bidirectional ventilation assembly and, in conjunction with the air guide ring 91, forms an annular channel between the air guide ring 91 and the main body of the second motor 5. This facilitates airflow entering the heat exchange exhaust fan 7 circumferentially, achieving axial air intake and axial air exhaust, thereby reducing air intake resistance.

[0160] Specifically, such as Figures 8-12 As shown, the exhaust fan 7 includes an exhaust wheel 71 and exhaust blades 72. The exhaust wheel 71 is connected to the output shaft 532 of the second motor 5. The exhaust blades 72 are connected to the side of the exhaust wheel 71 away from the heat exchange fan 41. The exhaust blades 72 are multiple and arranged circumferentially.

[0161] like Figure 8 and Figure 9 , Figure 12 As 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 (e.g., Figure 12 As shown), in the radially inward direction of the exhaust fan 7, the distance between the transition section 7212 and the exhaust wheel 71 gradually decreases, and all exhaust blades 72 form a side edge recess 723 at the transition section 7212. Figure 8 and Figure 9 (As shown in the diagram). The end of the air guide ring 91 is located within the side edge recess 723.

[0162] In other words, the exhaust blades 72 of the exhaust fan 7 are concave blades, and both the air guide ring 91 and the concave blades are recessed towards the fresh air fan 6. The air guide ring 91 partially enters the side edge recess 723 formed by the concave blades. This arrangement allows the air guide ring 91 and the exhaust fan 7 to partially overlap axially, and without increasing the axial dimension of the exhaust volute 9, the air guide ring 91 can be installed without increasing the axial dimension of the exhaust volute 9.

[0163] Furthermore, after the exhaust fan 7 rotates, the exhaust blades 72 form a funnel-shaped surface with a gradually decreasing 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.

[0164] Furthermore, a portion of the stator 51, a portion of the rotor 52, and a portion of the output shaft 532 are located within the side edge recess 723. That is, the second motor 5, the exhaust blade 72, and the guide ring 91 partially overlap axially, which further helps to reduce the axial dimension of the bidirectional ventilation assembly.

[0165] In some embodiments, such as Figure 12As shown, the blade side edge 721 may include: a straight section 7211, the straight section 7211 extending in a direction perpendicular to the axis of the exhaust fan 7, and the straight section 7211 being connected to the end of the gradient section 7212 away from the axis of the exhaust fan 7.

[0166] In other words, without the straight section 7211, the exhaust blades 72 would consist entirely of tapered sections 7212, resulting in a reduction in the blade size of the exhaust fan 72 in the radial direction. This would lead to a reduction in the sweeping area of ​​the blades, thus affecting the airflow of the exhaust fan 7. Therefore, combining the straight section 7211 and the tapered section 7212 in the exhaust blades 72 ensures both airflow and a certain level of space utilization in the axial direction of the exhaust fan 7. The larger axial dimension of the exhaust blades 72 near the outer edge allows for full utilization of the space within the exhaust duct V02 to drive airflow, which is beneficial for the airflow to gain greater kinetic energy.

[0167] Specifically, the transition section 7212 and the straight section 7211 are connected by an arc transition, and the surface of the transition section 7212 and the exhaust wheel 71 are also connected by an arc transition. This reduces stress concentration and the risk of breakage at the surface connections of the transition section 7212 and the straight section 7211, and between the transition section 7212 and the exhaust wheel 71. Furthermore, the arc transition between the surface of the transition section 7212 and the exhaust wheel 71 allows this connection to be directly aligned with the end of the air guide ring 91, reducing the risk of scratching.

[0168] In some embodiments, the rotation surfaces of the blade side edges 721 of all exhaust blades 72 coincide, and the rotation surface is the surface swept by the blade side edge 721 around the axis of the exhaust fan 7. In this way, when the airflow flows axially toward the center of the exhaust fan 7, it will not generate too much radial turbulence due to individual exhaust blades 72 with inconsistent shapes sweeping it, thus improving the stability of the airflow.

[0169] Specifically, such as Figure 12 As shown, the axial distance between the guide ring 91 and the transition section 7212 gradually increases in the direction away from the axis of the exhaust fan 7. It is understandable that when the second motor 5 drives the exhaust fan 7 to rotate, the exhaust fan 7 will inevitably experience slight wobbling due to wear. The further away from the axis of the exhaust fan 7 it wobbles, the greater the wobbling amplitude. Therefore, gradually increasing the axial distance between the guide ring 91 and the transition section 7212 in the direction away from the axis of the exhaust fan 7 helps reduce the risk of friction caused by the exhaust fan 7 contacting the guide ring 91 during wobbling.

[0170] In some specific embodiments, such as Figure 2As shown, the wall-mounted air conditioner 10000 may include: a fresh air inlet pipe 141 connected to a fresh air inlet 801, and an exhaust outlet pipe 142 connected to an exhaust outlet 902. A pipe clearance opening 104 is provided on the bottom wall of the casing 1. The fresh air inlet pipe 141 and the exhaust outlet pipe 142 pass through the pipe clearance opening 104 and extend from the bottom of the main body 1000. The fresh air inlet pipe 141 and the exhaust outlet pipe 142 are two independent pipes, which helps to separate the fresh air flow path and the exhaust air flow path, preventing them from intersecting and reducing the risk of air leakage caused by cross-flow.

[0171] A pipe clearance opening 104 is provided on the bottom wall of the main body 1000 to facilitate the installation of the aforementioned pipes.

[0172] The duct clearance opening 104 is set on the side wall of the casing 1. Then, the fresh air inlet pipe 141 and the exhaust outlet pipe 142 are laid horizontally and led out, making it easy to place at least one of the fresh air inlet pipe 141 and the exhaust outlet pipe 142 alongside the drain pipe and refrigerant pipe. In this way, the multiple pipes are wrapped with an external bundle or strap, so that the multiple pipes appear as a single pipe. This reduces the number of connecting pipes on the wall-mounted air conditioner 10000 after installation, resulting in a simple appearance. This not only facilitates assembly but also avoids the risk of multiple pipes being bumped or knocked over.

[0173] In some embodiments, such as Figure 1 As shown, a housing air outlet 105 is provided on the housing 1. The housing air outlet 105 is set to correspond to the fresh air outlet 802 of the fresh air volute 8, so that the fresh air discharged from the fresh air outlet 802 is discharged from the housing air outlet 105.

[0174] In some specific embodiments, the fresh air outlet 802 is located directly in front of the main body 1000, or the fresh air outlet 802 is located at the top of the main body 1000.

[0175] In some other embodiments, the fresh air outlet 802 is located below the main body 1000 to guide fresh air forward and downward into the room. Correspondingly, the housing outlet 105 may be located below the housing 1.

[0176] Optionally, 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.

[0177] In some embodiments, such as Figure 3 As shown, the exhaust air inlet 901 is formed on the exhaust volute 9, and the axial direction of the exhaust air inlet 901 is arranged along the length direction of the main body 1000. That is to say, the exhaust air inlet 901 is directly opposite the axial air intake end of the exhaust fan 7, so that the air resistance of the exhaust fan 7 entering through the exhaust air inlet 901 is small, which helps to ensure the exhaust air volume. When exhaust air intake is relatively easy, a smaller exhaust fan 7 can be selected to further reduce the size of the bidirectional ventilation assembly.

[0178] Specifically, the exhaust air inlet 901 is positioned away from the indoor heat exchanger 2 on the exhaust volute 9, and the air intake area of ​​the exhaust air inlet 901 precisely avoids the indoor heat exchanger 2. When there is condensate on the indoor heat exchanger 2, or when condensate adheres to the surface of parts near the indoor heat exchanger 2 inside the accommodating cavity V1, the condensate is less likely to be drawn into the exhaust duct V02 by the exhaust fan 7, reducing the risk of water accumulation and bacterial growth in the exhaust duct V02, and reducing the risk of condensate entering the second motor 5 and causing motor damage. When the fresh air fan 6 rotates, it draws air from the outside, and at this time, the condensate on the indoor heat exchanger 2 will not be drawn into the fresh air duct V01, reducing the risk of water accumulation and bacterial growth in the fresh air duct V01.

[0179] In some embodiments, such as Figure 1 As shown, the housing 1 has a housing air inlet 103 at the end where the second motor 5 is located, and the housing air inlet 103 is located at the top of the main body 1000. The housing air inlet 103 and the exhaust air inlet 901 form a first ventilation duct V04. The exhaust fan 7 rotates and drives the indoor air to enter the first ventilation duct V04 through the housing air inlet 103, and causes the indoor air to enter the exhaust volute 9 through the annular air inlet 353 and the exhaust air inlet 901.

[0180] In other words, there is no need for a physical duct connecting the air inlet 103 and the exhaust air inlet 901; airflow is drawn in from the top solely by wind pressure. The air inlet 103 is located at the top of the housing 1, in an area not visible to the user. Concealing the air inlet 103 improves the aesthetics of the design.

[0181] In some embodiments, the housing 1 has a housing air inlet 103 at the end where the second motor 5 is located, and the housing air inlet 103 is located on the side of the main body 1000. The exhaust fan 7 rotates and drives 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 annular air inlet 353 and the exhaust air inlet 901. That is to say, there is no need for a physical pipe to connect the housing air inlet 103 and the exhaust air inlet 901, and the housing air inlet 103 is located on the side of the main body 1000, which can be directly opposite the exhaust air inlet 901.

[0182] This shortens the air intake path from the housing air inlet 103 to the exhaust air inlet 901. Furthermore, since the air intake path is largely aligned with the axial direction of the exhaust fan 7, indoor air flowing towards the exhaust fan 7 along this path does not require multiple changes in airflow direction. This further reduces the air resistance at the exhaust air intake, ensuring sufficient exhaust airflow.

[0183] Optionally, the exhaust fan 7 can be made of plastic, thus reducing weight and cost. However, this application is not limited to this; the exhaust fan 7 can also be made of resin, metal, etc. Alternatively, the fresh air fan 6 can be made of plastic, thus reducing weight and cost. However, this application is not limited to this; the fresh air fan 6 can also be made of resin, metal, etc.

[0184] Similarly, the exhaust volute 9 can be made of plastic, thus being lightweight and low-cost. Optionally, the exhaust volute 9 can be injection molded. Optionally, the fresh air volute 8 can be made of plastic. Optionally, the fresh air volute 8 can be injection molded. Of course, the solution of this application is not limited to this; the fresh air volute 8 and the exhaust volute 9 can also be made of metal, etc.

[0185] Optionally, based on the structural and functional requirements designed in this application, such as Figure 10 As shown, the outer diameter D1 of the fresh air fan 6 is larger than the outer diameter D2 of the exhaust fan 7. This allows the area swept by the blades of the fresh air fan 6 to be larger than that swept by the blades of the exhaust fan 7, resulting in a greater fresh air volume than exhaust air volume, which meets the design requirements of the 10000 wall-mounted air conditioner. In other words, 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 expelling it outdoors. Furthermore, the high freshness of the outdoor air makes drawing in fresh air and blowing it indoors more effective in replenishing the indoor space with fresh air, increasing the oxygen content and reducing the carbon dioxide content.

[0186] Furthermore, by setting the outer diameter D2 of the exhaust fan 7 to be smaller than the outer diameter D1 of the fresh air fan 6, it is easy to make the exhaust outlet 902 of the exhaust duct V02 and the fresh air outlet 802 of the fresh air duct V01 staggered on the outer periphery of the bidirectional ventilation component. This facilitates the connection of the exhaust outlet pipe 142 to the exhaust outlet 902 and the fresh air inlet pipe 141 to the fresh air outlet 802. On the other hand, it makes it easy to ensure that the flow paths of fresh air and exhaust air within the bidirectional ventilation component do not intersect.

[0187] In the description of this specification, references to the terms "embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A wall-mounted air conditioner, comprising: a main body, the main body comprising: a casing, an accommodating cavity being formed in an interior of the casing, a heat exchange air inlet and a heat exchange air outlet being formed on the casing; a base, provided in the accommodating cavity, a volute tongue air duct being formed on the base; a heat exchange fan, provided in the volute tongue air duct, the heat exchange fan being configured to draw indoor air into the volute tongue air duct through the heat exchange air inlet and blow air in the volute tongue air duct to the indoor through the heat exchange air outlet when rotating; a first motor, provided in the accommodating cavity and located at one end of the heat exchange fan in a length direction of the heat exchange fan, the first motor being configured to drive the heat exchange fan to rotate; characterized in that the wall-mounted air conditioner further comprises: a second motor, provided in the accommodating cavity and located at the other end of the heat exchange fan in the length direction of the heat exchange fan, the second motor comprising: a rotor portion; a stator portion, provided around an outer side of the rotor portion in a radial direction of the rotor portion; an output shaft, fixedly connected with the rotor portion; a fresh air fan, the fresh air fan being an axial-inlet and radial-outlet centrifugal fan, the fresh air fan being located on a side of the heat exchange fan away from the first motor, the fresh air fan being fixedly connected with the output shaft of the second motor; wherein the fresh air fan is located between the second motor and the heat exchange fan; an exhaust air fan, the exhaust air fan being an axial-inlet and radial-outlet centrifugal fan, the exhaust air fan being located on a side of the fresh air fan toward the second motor in the length direction of the main body, the exhaust air fan being fixedly connected with the output shaft of the second motor; wherein the fresh air fan is located between the exhaust air fan and the heat exchange fan, the second motor being configured to drive the fresh air fan and the exhaust air fan to rotate synchronously in a working state; a fresh air volute, a fresh air duct being formed in the fresh air volute, the fresh air fan being installed in the fresh air volute, a fresh air inlet and a fresh air outlet being formed on the fresh air volute; an exhaust air volute, located on a side of the fresh air volute toward the second motor, an exhaust air duct being formed in the exhaust air volute, the exhaust air fan being installed in the exhaust air volute, an exhaust air inlet and an exhaust air outlet being formed on the exhaust air volute; wherein the stator portion of the second motor is located at least partially on a side of the exhaust air inlet away from the fresh air volute. 2.The wall-mounted air conditioner of claim 1, wherein the base can comprise: a mounting side plate, the mounting side plate being located at an end of the base away from the first motor, the second motor being located on a side of the mounting side plate toward the heat exchange fan and being mounted on the mounting side plate. 3.The wall-mounted air conditioner of claim 2, wherein the mounting side plate can comprise: a center portion, the center portion being provided corresponding to the exhaust air inlet; an outer ring plate, the outer ring plate being provided around the center portion, an annular air inlet being defined between the outer ring plate and the center portion; a radial rib, the radial rib being connected between the center portion and the outer ring plate; the second motor being mounted on at least one of the center portion, the outer ring plate and the radial rib. ​ ​ 4. The wall-mounted air conditioner of claim 3, wherein: the second motor further comprises: a motor base disposed radially outward of the output shaft, the motor base connected to the stator portion; and the mounting side plate further comprises: mounting lugs disposed on a side of the outer ring plate facing the exhaust scroll, the mounting lugs being a plurality of and disposed at intervals around the center portion; wherein the motor base is connected to the plurality of mounting lugs.

5. The wall-mounted air conditioner of claim 1, wherein: the exhaust scroll comprises: an air guide ring, an end of the air guide ring facing the fresh air fan constituting the exhaust air inlet; wherein at least a portion of the stator portion, at least a portion of the rotor portion, and the air guide ring are located within an area surrounded by the air guide ring.

6. The wall-mounted air conditioner of claim 5, wherein: the exhaust fan comprises: an exhaust impeller disc coaxially disposed with the second motor and connected to the output shaft; a plurality of exhaust blades disposed on the exhaust impeller disc, the exhaust blades extending only in a direction away from the fresh air fan, the plurality of exhaust blades being arranged circumferentially on the exhaust impeller disc.

7. The wall-mounted air conditioner of claim 6, wherein: an edge of the exhaust blade away from the exhaust impeller disc is a blade side edge, at least a portion of the blade side edge is a gradual change section, and the gradual change section gradually decreases in distance from the exhaust impeller disc in a direction radially inward of the exhaust fan.

8. The wall-mounted air conditioner of claim 7, wherein: all of the exhaust blades form a side edge recess at the gradual change section, an end of the air guide ring is located within the side edge recess, and a portion of the stator portion, a portion of the rotor portion, and a portion of the output shaft are located within the side edge recess.

9. The wall-mounted air conditioner of claim 1, wherein: the fresh air fan comprises: a fresh air impeller disc; a plurality of fresh air blades located at an outer edge of the fresh air impeller disc and extending in an axial direction of the fresh air impeller disc.

10. The wall-mounted air conditioner of claim 9, wherein: the fresh air blades can comprise: first fresh air blades extending from the fresh air impeller disc in a direction away from the exhaust fan.

11. The wall-mounted air conditioner of claim 10, wherein: the fresh air blades can comprise: second fresh air blades extending from the fresh air impeller disc in a direction toward the exhaust fan; and the fresh air impeller disc has a disc hole formed therein, the distance from the disc hole to the center of the fresh air impeller disc being less than the distance from the fresh air blades to the center of the fresh air impeller disc.

12. The wall-mounted air conditioner of any one of claims 1-11, wherein: the fresh air duct comprises: a scroll cavity in which the fresh air fan is located; a fresh air cavity located on a side of the scroll cavity facing the heat exchange fan. The fresh air volute includes: A fresh air grille partitioned between the volute chamber and the fresh air chamber; The wall-mounted air conditioner can include: A purifying member installed in the fresh air chamber, wherein the fresh air fan rotates to allow outdoor air to enter the fresh air volute from the fresh air inlet, and to allow the outdoor air entering the fresh air volute to be blown through the purifying member and then into the room from the fresh air outlet.

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