Wall-mounted air conditioner

Abstract

The utility model discloses a wall-mounted air conditioner which comprises a main body, the main body comprises a machine shell, an indoor heat exchanger, a base, a heat exchange fan and a first motor, the wall-mounted air conditioner further comprises a second motor, a fresh air fan, an exhaust fan, a fresh air volute and an exhaust volute, and the second motor comprises a stator part, a rotor part, a motor shell and an output shaft. The second motor drives the fresh air fan and the exhaust fan to rotate synchronously in the working state, heat transfer parts are arranged on the wall bodies, separating the fresh air channel from the exhaust channel, in the fresh air volute and the exhaust volute, so that the temperature of air in the exhaust channel is changed through the heat transfer parts. According to the wall-mounted air conditioner provided by the embodiment of the utility model, the heat transfer part is arranged on the wall body for separating the fresh air duct from the exhaust duct in the fresh air volute and the exhaust volute, so that the temperature difference between the fresh air entering a room through the fresh air outlet and the indoor air can be reduced, and discomfort brought to people due to too large temperature difference between the two parts of air is avoided.

Description

Technical Field

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

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

[0003] In the prior art solutions, there have emerged some fresh air air conditioners. The fresh air module inhales fresh air from the outside, and the exhaust module discharges the indoor air. However, if there is a large temperature difference between the outdoor air and the indoor air, the introduced fresh air and the indoor air will cause discomfort to the user due to the temperature difference. Therefore, there is still room for improvement. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a wall-mounted air conditioner, which can reduce the temperature difference between the fresh air entering the room through the fresh air outlet and the indoor air, and avoid discomfort caused by the too large temperature difference between the two parts of air.

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

[0006] The wall-mounted air conditioner further includes: a second motor, arranged in the accommodation cavity, and the second motor is located at the other end in the length direction of the main body.

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

[0008] The wall-mounted air conditioner further includes: an exhaust fan, which is a centrifugal fan with axial air intake and radial air outlet. In the length direction of the main body, the exhaust fan is located on the side of the fresh air fan facing the second motor, and the exhaust fan is sleeved on the radial outer side of the motor housing of the second motor; wherein, in the working state, the second motor drives the fresh air fan and the exhaust fan to rotate synchronously.

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

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

[0011] Wherein, the wall body separating the fresh air duct and the exhaust duct in the fresh air volute and the exhaust volute has a heat transfer part, so that heat transfer is carried out between the exhaust duct and the fresh air duct through the heat transfer part.

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

[0013] By arranging a heat transfer part on the wall body separating the fresh air duct and the exhaust duct in the fresh air volute and the exhaust volute, if there is a large temperature difference between the outdoor air and the indoor air, the indoor air entering the exhaust duct from the exhaust inlet and the outdoor air entering the fresh air duct from the fresh air inlet can carry out heat transfer through the heat transfer part, so as to change the air temperature in the fresh air duct, thereby reducing the temperature difference between the fresh air entering the room through the fresh air outlet and the indoor air, avoiding discomfort caused by too large a temperature difference between the two parts of air to people, and being beneficial to improving the user experience.

[0014] Setting the fresh air fan on the side of the exhaust fan facing the indoor heat exchanger can reduce the loss of cooling or heating in the room and improve the comfort when fresh air is blown into the room. Specifically, the fresh air volute is close to the indoor heat exchanger. The fresh air inhaled from the outside can absorb the cooling or heating released by the indoor heat exchanger before being blown into the room, so that the fresh air is as close as possible to the indoor temperature before being blown into the room. The exhaust volute is far from the indoor heat exchanger, so it absorbs less cooling or heating from the indoor heat exchanger after absorbing air from the room, and the loss of cooling or heating discharged to the outside is small.

[0015] Setting the fresh air fan on the side of the exhaust fan facing the indoor heat exchanger can also reduce the entry of condensed water into the air duct when the indoor heat exchanger is refrigerating. It reduces the risk of water accumulation and bacteria breeding in the exhaust air duct and the fresh air duct. The exhaust fan is located on the side of the fresh air fan away from the indoor heat exchanger. For the exhaust fan that needs to intake air from the room, the intake air energy consumption it needs to consume is also relatively low.

[0016] In some embodiments, the fresh air volute includes: a first volute, the first volute is located on the side of the exhaust volute facing the heat exchange fan, and the first volute is detachably connected to the exhaust volute; a second volute, the second volute is located on the side of the first volute facing the heat exchange fan, and the second volute is detachably connected to the first volute, and the first volute is located between the exhaust volute and the second volute.

[0017] In some embodiments, the first volute includes a first volute end plate and a first volute shroud, and the first volute shroud extends along the edge of the first volute end plate towards the heat exchange fan; wherein, the first volute end plate separates the fresh air duct and the exhaust air duct, the first volute end plate includes a plate body and a heat transfer part, the plate body is provided with a through hole, and the heat transfer part is located at the through hole and is connected to the plate body.

[0018] In some embodiments, the heat transfer part includes a heat transfer plate.

[0019] In some embodiments, a perforation part is provided at the center of the heat transfer plate, and the output shaft of the second motor is connected to the fresh air fan through the perforation part.

[0020] In some embodiments, the heat transfer plate is a metal plate or a graphite plate.

[0021] In some embodiments, the exhaust fan includes an exhaust wheel disc and exhaust blades. The exhaust blades are located at the edge of the exhaust wheel disc and extend axially along the exhaust wheel disc in a direction away from the fresh air fan. The exhaust fan further includes a raised portion provided on the exhaust wheel disc, and the raised portion extends in a direction of the exhaust fan towards the fresh air fan, so that a receiving groove for the second motor is formed on a side of the raised portion close to the second motor.

[0022] In some embodiments, a central partial region of the first volute end plate forms a recess towards the inside of the fresh air fan, and at least a part of the raised portion is located in the recess.

[0023] In some embodiments, the second motor is an outer rotor motor, and the second motor includes: a stator portion with a wound coil thereon; a rotor portion disposed around the outside of the stator portion in the radial direction of the stator portion; a motor housing fixedly connected to the rotor portion; and an output shaft fixedly connected to the motor housing. Wherein, the fresh air fan is located between the heat exchange fan and the motor housing, and the fresh air fan is connected to the output shaft of the second motor, and the exhaust fan is fixedly connected to the motor housing.

[0024] In some embodiments, a receiving groove is formed at the center of the exhaust fan in the radial direction, and at least a part of the stator portion, at least a part of the rotor portion, and at least a part of the motor housing of the second motor are received in the receiving groove.

[0025] In some embodiments, the exhaust volute includes a wind guiding ring. The wind guiding ring is in the shape of a circular tube, and the diameter of the wind guiding ring gradually decreases in the direction towards the heat exchange fan. The region surrounded by the wind guiding ring forms the exhaust air inlet.

[0026] In some embodiments, the exhaust fan includes: an exhaust wheel disc and exhaust blades. The exhaust wheel disc is connected to the motor housing of the second motor. The exhaust blades are connected to a side of the exhaust wheel disc away from the heat exchange fan. The exhaust blades are multiple and arranged circumferentially. An edge of the exhaust blade away from the exhaust wheel disc is a blade side edge, and a distance between a part of the blade side edge close to the second motor and the exhaust wheel disc decreases. All the exhaust blades form a side edge recess at the position where the distance of the blade side edge decreases. An end of the wind guiding ring is located in the side edge recess.

[0027] In some embodiments, the fresh air fan includes a fresh air wheel disc and fresh air blades. The fresh air blades are located at the outer edge of the fresh air wheel disc and extend along the axial direction of the fresh air wheel disc. The total thickness of the fresh air wheel disc and the fresh air blades in the axial direction is h1; the total thickness of the stator part, the rotor part and the motor housing in the axial direction is h3, where h1 > h3.

[0028] In some embodiments, the exhaust fan includes an exhaust wheel disc and exhaust blades. The exhaust blades are located at the edge of the exhaust wheel disc and extend along the axial direction of the exhaust wheel disc away from the fresh air fan. The total thickness of the exhaust wheel disc and the exhaust blades in the axial direction is h2; the total thickness of the stator part, the rotor part and the motor housing in the axial direction is h3; where h3 > h2.

[0029] In some embodiments, the fresh air fan includes a fresh air wheel disc and fresh air blades. The fresh air blades are located at the outer edge of the fresh air wheel disc and extend along the axial direction of the fresh air wheel disc. The total thickness of the fresh air wheel disc and the fresh air blades in the axial direction is h1; the exhaust fan includes an exhaust wheel disc and exhaust blades. The exhaust blades are located at the edge of the exhaust wheel disc and extend along the axial direction of the exhaust wheel disc away from the fresh air fan. The total thickness of the exhaust wheel disc and the exhaust blades in the axial direction is h2; where h1 < h2.

[0030] In some embodiments, the area of the outer circular surface of the fresh air fan is S1, and the area of the outer circular surface of the exhaust fan is S2. S1 = ΠD1 * h1, where D1 is the outer diameter of the fresh air fan and h1 is the total thickness of the fresh air wheel disc and the fresh air blades of the fresh air fan in the axial direction; S2 = ΠD2 * h2, where D2 is the outer diameter of the exhaust fan and h2 is the total thickness of the exhaust wheel disc and the exhaust blades of the exhaust fan in the axial direction; and S1 > S2 is satisfied.

[0031] In some embodiments, the fresh air fan includes: a fresh air wheel disc, which is coaxially arranged with the second motor and connected to the output shaft of the second motor; fresh air blades, including first fresh air blades, which extend from the fresh air wheel disc away from the exhaust fan.

[0032] In some embodiments, the fresh air blades further include second fresh air blades, which extend from the fresh air wheel disc towards the exhaust fan.

[0033] In some embodiments, in the axial direction of the fresh air fan, the length of the second fresh air blades is less than the length of the first fresh air blades.

[0034] In some embodiments, a wheel disc hole is formed in the fresh air wheel disc, and the distance from the wheel disc hole to the center of the fresh air wheel disc is less than the distance from the fresh air blade to the center of the fresh air wheel disc.

[0035] In some embodiments, the second volute includes: a second volute half body, which is located on the side of the first volute facing the heat exchange fan and is detachably connected to the first volute. An axial ventilation opening is provided at the center of the second volute half body in the radial direction. A volute cavity is formed between the second volute half body and the first volute. The fresh air fan is located in the volute cavity, and the axial air inlet end of the fresh air fan faces the axial ventilation opening. The second volute half body and the first volute enclose the fresh air outlet.

[0036] In some embodiments, the second volute includes: a fan cover, which is located on the side of the second volute half body facing the heat exchange fan and is detachably connected to the second volute half body. The cavity enclosed by the fan cover and the second volute half body is the fresh air cavity, and the fresh air inlet is enclosed by the fan cover and the second volute half body.

[0037] In some embodiments, the wall-mounted air conditioner further includes: a purification component, which is installed in the fresh air cavity and is connected to the second volute. When the fresh air fan rotates, outdoor air can enter the fresh air volute from the fresh air inlet, and the outdoor air entering the fresh air volute can blow through the purification component and then enter the room from the fresh air outlet; the purification component includes a filter screen, and the filter screen covers the axial ventilation opening.

[0038] In some embodiments, a part of the fresh air cavity forms an empty cavity, which is located on the side of the purification component away from the fresh air fan, and the fresh air inlet communicates with the cavity.

[0039] In some embodiments, an installation opening is further enclosed between the fan cover and the second volute half body, and the purification component is detachably assembled in the fresh air cavity through the installation opening.

[0040] The wall-mounted air conditioner according to an embodiment of the present utility model includes: a main body, the main body includes: a housing, an accommodation cavity is formed inside the housing, a heat exchange air inlet and a heat exchange air outlet are formed on the housing, and in the height direction of the main body, the heat exchange air inlet is located above the heat exchange air outlet; an indoor heat exchanger, arranged in the accommodation cavity; a base, arranged in the accommodation cavity, on which a volute tongue air duct is formed; a heat exchange fan, arranged in the volute tongue air duct and located on the side of the indoor heat exchanger away from the heat exchange air inlet; a first motor, arranged in the accommodation cavity and located at one end in the length direction of the main body, for driving the heat exchange fan to rotate so that air exchanges heat between the inside of the air conditioner and the indoor space.

[0041] The wall-mounted air conditioner further includes: a second motor, the second motor is arranged in the accommodation cavity and the second motor is located at the other end in the length direction of the main body; the second motor is an outer rotor motor, and the second motor includes: a stator part, on which a wound coil is provided; a rotor part, in the radial direction of the stator part, the rotor part is arranged around the outside of the stator part; a motor housing, the motor housing is fixedly connected to the rotor part; an output shaft, the output shaft is fixedly connected to the motor housing.

[0042] The wall-mounted air conditioner further includes: a fresh air fan, the fresh air fan is a centrifugal fan with axial air inlet and radial air outlet, the fresh air fan is located on the side of the heat exchange fan away from the first motor, the fresh air fan is located between the heat exchange fan and the motor housing, and the fresh air fan is connected to the output shaft of the second motor;

[0043] The wall-mounted air conditioner further includes: an exhaust fan, the exhaust fan is a centrifugal fan with axial air inlet and radial air outlet, in the length direction of the main body, the exhaust fan is located on the side of the fresh air fan facing the second motor, the exhaust fan is sleeved on the radial outside of the motor housing, and the exhaust fan is fixedly connected to the motor housing; wherein, the second motor drives the fresh air fan and the exhaust fan to rotate synchronously in the working state.

[0044] The wall-mounted air conditioner further includes: a fresh air volute, a fresh air duct is formed in the fresh air volute, the fresh air fan is installed in the fresh air volute, and a fresh air inlet and a fresh air outlet are formed on the fresh air volute; the rotation of the fresh air fan can make outdoor air enter the fresh air volute from the fresh air inlet, and can make the outdoor air entering the fresh air volute enter the room from the fresh air outlet;

[0045] The wall-mounted air conditioner further includes: an exhaust air volute located on one side of the fresh air volute facing the second motor. An exhaust air duct is formed inside the exhaust air volute. The exhaust air fan is installed inside the exhaust air volute. An exhaust air inlet and an exhaust air outlet are formed on the exhaust air volute. When the exhaust air fan rotates, indoor air can enter the exhaust air volute from the exhaust air inlet, and the indoor air entering the exhaust air volute can be discharged to the outside from the exhaust air outlet.

[0046] The fresh air volute includes: a first volute located on one side of the exhaust air volute facing the heat exchange fan, and the first volute is detachably connected to the exhaust air volute; a second volute located on one side of the first volute facing the heat exchange fan, and the second volute is detachably connected to the first volute. The first volute is located between the exhaust air volute and the second volute.

[0047] Wherein, the first volute includes a first volute end plate and a first volute shroud. The first volute shroud extends along the edge of the first volute end plate towards the heat exchange fan. The first volute end plate separates the fresh air duct and the exhaust air duct. The first volute end plate includes a plate body and a heat transfer part. The plate body is provided with a through hole. The heat transfer part includes a heat transfer plate located at the through hole and connected to the plate body.

[0048] The wall-mounted air conditioner according to an embodiment of the present invention includes: a main body. The main body includes: a housing. An accommodation cavity is formed inside the housing. A heat exchange air inlet and a heat exchange air outlet are formed on the housing. In the height direction of the main body, the heat exchange air inlet is located above the heat exchange air outlet. An indoor heat exchanger is arranged in the accommodation cavity. A base is arranged in the accommodation cavity and is provided with a tongue duct. A heat exchange fan is arranged in the tongue duct and is located on the side of the indoor heat exchanger away from the heat exchange air inlet. A first motor is arranged in the accommodation cavity and is located at one end in the length direction of the main body for driving the heat exchange fan to rotate so that heat exchange is carried out between the air inside the air conditioner and the indoor space.

[0049] The wall-mounted air conditioner further includes: a second motor arranged in the accommodation cavity and located at the other end in the length direction of the main body. The second motor is an outer rotor motor. The second motor includes: a stator part with a wound coil thereon; a rotor part arranged around the outside of the stator part in the radial direction of the stator part; a motor housing fixedly connected to the rotor part; an output shaft fixedly connected to the motor housing.

[0050] The wall-mounted air conditioner further includes: a fresh air fan, which is a centrifugal fan with axial air intake and radial air outlet. The fresh air fan is located on the side of the heat exchange fan away from the first motor, between the heat exchange fan and the motor housing, and is connected to the output shaft of the second motor.

[0051] The wall-mounted air conditioner further includes: an exhaust fan, which is a centrifugal fan with axial air intake and radial air outlet. In the length direction of the main body, the exhaust fan is located on the side of the fresh air fan facing the second motor, sleeved on the radial outer side of the motor housing, and fixedly connected to the motor housing.

[0052] Wherein, the second motor drives the fresh air fan and the exhaust fan to rotate synchronously in the working state.

[0053] The wall-mounted air conditioner further includes: a fresh air volute. A fresh air duct is formed inside the fresh air volute. The fresh air fan is installed inside the fresh air volute. A fresh air inlet and a fresh air outlet are formed on the fresh air volute. When the fresh air fan rotates, outdoor air can enter the fresh air volute from the fresh air inlet, and the outdoor air entering the fresh air volute can enter the room from the fresh air outlet.

[0054] The wall-mounted air conditioner further includes: an exhaust volute, located on the side of the fresh air volute facing the second motor. An exhaust duct is formed inside the exhaust volute. The exhaust fan is installed inside the exhaust volute. An exhaust inlet and an exhaust outlet are formed on the exhaust volute. When the exhaust fan rotates, indoor air can enter the exhaust volute from the exhaust inlet, and the indoor air entering the exhaust volute can be discharged to the outside from the exhaust outlet.

[0055] The fresh air volute includes: a first volute, which is located on the side of the exhaust volute facing the heat exchange fan and is detachably connected to the exhaust volute; a second volute, which is located on the side of the first volute facing the heat exchange fan and is detachably connected to the first volute. The first volute is located between the exhaust volute and the second volute.

[0056] Wherein, the first volute includes a first volute end plate and a first volute shroud. The first volute shroud extends along the edge of the first volute end plate towards the heat exchange fan. The first volute end plate separates the fresh air duct and the exhaust duct. The first volute end plate has a heat transfer part, and the heat transfer part includes a plurality of heat transfer through holes to communicate the fresh air duct and the exhaust duct.

[0057] In some embodiments, the exhaust fan includes an exhaust wheel disc and exhaust blades. The exhaust blades are located at the edge of the exhaust wheel disc and extend axially along the exhaust wheel disc in a direction away from the fresh air fan. The exhaust fan further includes a raised portion provided on the exhaust wheel disc, and the raised portion extends in a direction of the exhaust fan towards the fresh air fan, so as to form a receiving groove for the second motor on a side of the raised portion close to the second motor.

[0058] In some embodiments, a central partial area of the first volute end plate forms a recess towards the inside of the fresh air fan, and at least a part of the raised portion is located in the recess.

[0059] In some embodiments, a perforation portion is provided at the center of the bottom wall of the recess, and an output shaft of the second motor is connected to the fresh air fan through the perforation portion.

[0060] In some embodiments, a plurality of the heat transfer through holes penetrate the bottom wall of the recess and are arranged around the perforation portion, and a ratio of a total area of the plurality of heat transfer through holes to a surface area of the bottom wall of the recess is 0.15 - 0.85.

[0061] In some embodiments, the fresh air fan includes: a fresh air wheel disc coaxially arranged with the second motor and connected to the output shaft of the second motor; first fresh air blades extending from the fresh air wheel disc in a direction away from the exhaust fan; second fresh air blades extending from the fresh air wheel disc in a direction close to the exhaust fan, and the number of the second fresh air blades is multiple, and the multiple second fresh air blades are arranged around the heat transfer portion.

[0062] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0063] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0064] Figure 1 is a perspective view of the main body of a wall-mounted air conditioner in some embodiments (part of the casing is hidden in the figure);

[0065] Figure 2 is a front view of the main body of a wall-mounted air conditioner in some other embodiments (part of the casing is hidden in the figure);

[0066] Figure 3 is a perspective view of the inside of the main body in one direction in some embodiments;

[0067] Figure 4 Is a perspective view in another direction inside the main body in some embodiments;

[0068] Figure 5 Is a perspective view in one direction of the two-way ventilation component in some embodiments;

[0069] Figure 6 Is a perspective view in another direction of the two-way ventilation component in some embodiments;

[0070] Figure 7 Is a side view of the two-way ventilation component in some embodiments;

[0071] Figure 8 Is Figure 7 A cross-sectional view along the A-A direction in

[0072] Figure 9 Is Figure 8 An enlarged view of part B shown in

[0073] Figure 10 Is a perspective view of the first volute in some embodiments;

[0074] Figure 11 Is Figure 10 A cross-sectional view of the first volute shown in

[0075] Figure 12 Is a perspective view of the first volute in some other embodiments;

[0076] Figure 13 Is an exploded view of the second motor in some embodiments;

[0077] Figure 14 Is a cross-sectional view of the second motor in some embodiments;

[0078] Figure 15 Is a cross-sectional view of the exhaust fan in some embodiments;

[0079] Figure 16 Is a front view of the fresh air fan in some embodiments;

[0080] Figure 17 Is a side view of the fresh air fan in some embodiments;

[0081] Figure 18 Is an exploded view of the two-way ventilation component (hiding some parts) in one direction in some embodiments;

[0082] Figure 19 Is an exploded view of the two-way ventilation component in another direction in some embodiments;

[0083] Figure 20Is a perspective view of the two-way ventilation component in some other embodiments.

[0084] Reference numerals:

[0085] Wall-mounted air conditioner 10000,

[0086] Main body 1000,

[0087] Housing 1, accommodation cavity V1, first chamber V11, second chamber V12,

[0088] Heat exchange air inlet 101, heat exchange air outlet 102, housing air inlet 103, first connecting air duct V04, housing air outlet 105, indoor heat exchanger 2,

[0089] Base 3, volute tongue air duct V03, end plate 31, positioning depression 311,

[0090] Heat exchange fan 41, first motor 42,

[0091] Second motor 5, stator part 51, rotor part 52, motor housing 531, output shaft 532,

[0092] Fresh air fan 6, fresh air wheel disc 61, wheel disc holes 612, fresh air blades 62, first fresh air blade 621, second fresh air blade 622, exhaust fan 7, accommodation groove V07, exhaust wheel disc 71, exhaust blades 72, blade side edge 721, side edge depression 73, convex part 74,

[0093] Fresh air volute 8, fresh air duct V01, volute cavity V011, fresh air cavity V012, cavity V0121, fresh air inlet 801, fresh air outlet 802, installation opening 803, purification air inlet 804,

[0094] First volute 81, first volute end plate 811, first volute enclosing plate 812, depression part 813, perforated part 814, through opening 815, heat transfer part 816, heat transfer plate 8161, heat transfer through holes 8162,

[0095] Second volute 82, second volute half body 821, axial ventilation opening 8211, fan cover 822, positioning convex boss 8221,

[0096] Exhaust volute 9, exhaust duct V02, exhaust air inlet 901, exhaust air outlet 902, indoor exhaust air outlet 903, air guide ring 91, purification component 11, filter net 111, electric control box 13, fresh air introduction pipe 141, exhaust air extraction pipe 142. Detailed implementation manners

[0097] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with 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 utility model and should not be construed as a limitation of the present utility model.

[0098] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the accompanying drawings. These are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "plurality" is two or more.

[0099] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0100] The present application scheme introduces the structure of a wall-mounted air conditioner 10000.

[0101] Before that, the structure of a common air conditioner will be introduced first. A common air conditioner is a split-type air conditioner, which includes an indoor unit and an outdoor unit. The indoor unit and the outdoor unit are connected through pipelines to transmit refrigerant. The indoor unit includes an indoor heat exchanger 2 and a heat exchange fan 41.

[0102] The outdoor unit includes a compressor, an outdoor heat exchanger, an outdoor fan, and a throttling element. The compressor, the outdoor heat exchanger, the throttling element, and the indoor heat exchanger 2 connected in sequence form a refrigerant circuit. The refrigerant circulates in the refrigerant circuit and exchanges heat with air through the outdoor heat exchanger and the indoor heat exchanger 2 respectively to achieve the cooling mode or heating mode of the air conditioner.

[0103] The compressor is configured to compress the refrigerant so that the low-pressure refrigerant is compressed to form a high-pressure refrigerant.

[0104] The outdoor heat exchanger is configured to exchange heat between outdoor air and the refrigerant flowing through the outdoor heat exchanger. For example, the outdoor heat exchanger operates as a condenser in the cooling mode of the air conditioner, causing the refrigerant compressed by the compressor to dissipate heat to the outdoor air through the outdoor heat exchanger and condense. The outdoor heat exchanger operates as an evaporator in the heating mode of the air conditioner, causing the depressurized refrigerant to absorb heat from the outdoor air through the outdoor heat exchanger and evaporate.

[0105] In some embodiments, the outdoor heat exchanger further includes heat exchange fins to increase the contact area between the outdoor air and the refrigerant flowing through the outdoor heat exchanger, thereby improving the heat exchange efficiency between the outdoor air and the refrigerant.

[0106] The outdoor fan is configured to suck external air into the outdoor unit and send the outdoor air that has exchanged heat with the outdoor heat exchanger to the outside. The outdoor fan provides power for the flow of the outdoor air.

[0107] The throttle member is connected between the outdoor heat exchanger and the indoor heat exchanger 2. The throttle member is used to adjust the pressure of the refrigerant flowing through the outdoor heat exchanger and the indoor heat exchanger 2 to regulate the refrigerant flow rate between the outdoor heat exchanger and the indoor heat exchanger 2. The flow rate and pressure of the refrigerant flowing between the outdoor heat exchanger and the indoor heat exchanger 2 will affect the heat exchange performance of the outdoor heat exchanger and the indoor heat exchanger 2. The throttle member can be a throttle tube, an electronic valve, etc. When the throttle member is an electronic valve, the opening degree of the throttle member is adjustable to regulate the flow rate and pressure of the refrigerant flowing through the throttle member.

[0108] In some solutions, the air conditioner further includes a four-way valve. The four-way valve is connected within the refrigerant circuit and is configured to switch the flow direction of the refrigerant in the refrigerant circuit so that the air conditioner can execute the cooling mode or the heating mode.

[0109] The indoor heat exchanger 2 is configured to exchange heat between indoor air and the refrigerant flowing through the indoor heat exchanger 2. In some embodiments, the indoor heat exchanger 2 further includes heat exchange fins to increase the contact area between the indoor air and the refrigerant flowing through the indoor heat exchanger 2, thereby improving the heat exchange efficiency between the indoor air and the refrigerant.

[0110] The heat exchange fan 41 is configured to suck indoor air into the indoor unit and send the indoor air that has exchanged heat with the indoor heat exchanger 2 into the room. The heat exchange fan 41 provides power for the flow of the indoor air.

[0111] The air conditioner further includes a control device. The control device is mainly used to control the operating frequency of the compressor and the opening degree of the throttle member. Some control devices can also control the rotational speed of the outdoor fan and the rotational speed of the heat exchange fan 41, etc. The control device is connected to the compressor, the throttle member, the outdoor fan, and the heat exchange fan 41 through data lines to transmit communication information.

[0112] 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.

[0113] The non-transitory computer-readable storage medium may include a magnetic storage device (e.g., a hard disk, a floppy disk, or a magnetic tape), a smart card, or a flash memory device (e.g., an erasable programmable read-only memory (EPROM), a card, a stick, or a thumb drive).

[0114] A wall-mounted air conditioner 10000 proposed by the present utility model is an indoor unit. The wall-mounted air conditioner 10000 is usually installed on a wall, for example, it can be installed in the upper area of an indoor wall.

[0115] The wall-mounted air conditioner 10000 according to an embodiment of the present utility model will be described below with reference to the accompanying drawings.

[0116] Referring to Figure 1 and Figure 2 , the wall-mounted air conditioner 10000 according to an embodiment of the present utility model includes: a main body 1000.

[0117] The main body 1000 includes: a housing 1. An accommodation cavity V1 is formed inside the housing 1. The housing 1 constitutes the overall external structure of the wall-mounted air conditioner 10000 and can play a protective role.

[0118] Generally, the housing 1 is an elongated shell, and the length direction of the housing 1 is arranged along the horizontal direction, that is, the housing 1 is mounted on the wall horizontally. In actual products, in order to drain condensed water, in some embodiments, the housing 1 is mounted on the wall horizontally and forms a small angle with the horizontal plane.

[0119] Referring to Figure 3 and Figure 4 , the main body 1000 further includes: an indoor heat exchanger 2. The indoor heat exchanger 2 is disposed in the accommodation cavity V1. As described above, the indoor heat exchanger 2 is a part of the refrigerant circuit, and refrigerant flows inside it, and is used to cool or heat the air flowing over the surface of the indoor heat exchanger 2. In the wall-mounted air conditioner 10000, the indoor heat exchanger 2 usually extends along the length direction of the housing 1. For example, the indoor heat exchanger 2 is a two-fold or three-fold heat exchanger, and each fold of the indoor heat exchanger 2 is a plate-like structure extending along the length direction.

[0120] Reference Figure 3 and Figure 4 ,the main body 1000 further includes: a base 3, the base 3 is disposed in the accommodation cavity V1, and the base 3 is an installation and support structure inside the main body 1000. The indoor heat exchanger 2 can be installed on the base 3. Specifically, a volute tongue air duct V03 is formed on the base 3. After the indoor air enters the housing 1, the flow direction is guided through the volute tongue air duct V03, ensuring that the resistance of the indoor air flowing through the indoor heat exchanger 2 is relatively small.

[0121] Reference Figure 4 ,the main body 1000 further includes: a heat exchange fan 41, and the heat exchange fan 41 is disposed in the volute tongue air duct V03. In the solution of the present application, the heat exchange fan 41 can be selected as a cross-flow fan, which has low noise and a large air volume, and the air outlet wind speed of the cross-flow fan is relatively uniform along the axial direction of the cross-flow fan, which is beneficial to increasing the air supply distance and air supply range. Moreover, by using a cross-flow fan and arranging the cross-flow fan along the length direction of the main body 1000, it is beneficial to drive the air flow to flow through the entire indoor heat exchanger 2, ensuring the balance of the heat exchange efficiency at each position of the indoor heat exchanger 2.

[0122] Reference Figure 4 ,the main body 1000 further includes: a first motor 42, the first motor 42 is disposed in the accommodation cavity V1, and the first motor 42 is used to drive the heat exchange fan 41 to rotate, so that the air can perform heat exchange between the inside of the air conditioner and the indoor space.

[0123] Please refer to Figures 2 - 4 again, a heat exchange air inlet 101 and a heat exchange air outlet 102 are formed on the housing 1. When the heat exchange fan 41 operates, the indoor air is sucked into the housing 1 from the heat exchange air inlet 101, and after heat exchange with the indoor heat exchanger 2, the heat-exchanged air is sent to the indoor through the heat exchange air outlet 102.

[0124] Thus, the indoor environmental temperature is adjusted. The indoor heat exchanger 2 can be used as an evaporator to provide a cooling air flow towards the indoor space from the heat exchange air outlet 102, or the indoor heat exchanger 2 can be used as a condenser to provide a heating air flow towards the indoor space from the heat exchange air outlet 102.

[0125] In the solution of the present application, in the height direction of the main body 1000, the heat exchange air inlet 101 is located above the heat exchange air outlet 102, which is convenient for air intake from above and air outlet from below. In the present application, the height direction of the main body 1000 is the up and down direction.

[0126] It can be understood that the main body 1000 is usually installed on the wall. To avoid interfering with people's daily lives, the position where the main body 1000 is hung is usually relatively high. By setting the main body 1000 to blow out the heat exchange air from below, the blown heat exchange air is not easily blocked by the roof and the ground. In this way, the resistance consumed during the blowing process of the heat exchange air is small, and the air supply range is wide, so that the heat exchange air can flow to the entire indoor space as soon as possible, improving the heat exchange efficiency.

[0127] Referring to Figure 1 and Figure 2 , the heat exchange air inlet 101 is located above the heat exchange air outlet 102. The heat exchange air inlet 101 can intake air from above, which can avoid intake air from the heat exchange air outlet 102, preventing the heat exchange air from being directly sucked into the heat exchange air inlet 101 after being blown out from the heat exchange air outlet 102, and reducing the process of the heat exchange air idling without participating in indoor heat exchange.

[0128] In some specific embodiments, the heat exchange air inlet 101 is located at the top of the casing 1, that is, in an area that is not visible to the user, hiding the heat exchange air inlet 101 can improve the aesthetic appearance.

[0129] In some embodiments, the heat exchange air outlet 102 is located directly in front of the casing 1, that is, the heat exchange air outlet 102 blows air towards the front side of the main body 1000. It can be understood that the side where the main body 1000 is connected to the wall is usually referred to as the back or the rear side, and the side opposite to the rear side is referred to as the front side. Therefore, when the heat exchange air outlet 102 is located directly in front of the casing 1, the blown air is away from the wall, and the blowing resistance is small, and the air supply range is wide.

[0130] In some other embodiments, the heat exchange air outlet 102 is located at the front side of the casing 1 and close to the bottom, or it can be said that the heat exchange air outlet 102 is located at the front lower corner of the casing 1. At this time, the heat exchange air blown out by the heat exchange air outlet 102 will flow downward while flowing forward. In this way, after the heat exchange air is sent to a certain distance, it can sink and fall on people or objects on the ground, enabling people or objects on the ground to be in a comfortable indoor environment as soon as possible.

[0131] In the solution of this application, the heat exchange fan 41 is located on the side of the indoor heat exchanger 2 away from the heat exchange air inlet 101. It can be understood that the heat exchange fan 41 is a power driving component that drives the indoor air to exchange heat with the indoor heat exchanger 2 by rotation, and is also a power driving component for air supply.

[0132] Placing the heat exchange fan 41 on the side of the indoor heat exchanger 2 away from the heat exchange air inlet 101 can evenly distribute the air power generated when the heat exchange fan 41 rotates. A part of it is distributed to the air intake side, enabling the inhaled air to overcome the wind resistance generated by the indoor heat exchanger 2 when flowing into the volute tongue air duct V03, and the other part is distributed to the air supply side, enabling the heat-exchanged air to be blown out from the heat exchange air outlet 102 with a longer conveying distance.

[0133] In the solution of this application, as Figure 4 shown, the first motor 42 is located at one end of the main body 1000 in the length direction. This facilitates the installation and maintenance of the first motor 42, and the overall main body 1000 does not need to become too high or too thick due to the setting of the first motor 42. Here, the height direction of the main body 1000 is consistent with the up and down direction, and the thickness direction of the main body 1000 is consistent with the front and back direction.

[0134] Referring to Figure 3 and Figure 4 , in the solution of this application, the wall-mounted air conditioner 10000 further includes: a second motor 5. The second motor 5 is arranged in the accommodating cavity V1 and is located at the other end of the main body 1000 in the length direction.

[0135] In this way, the first motor 42 and the second motor 5 are located at both ends of the main body 1000 in the length direction. On the one hand, the two motors are separated and the distance between them is far, so the electromagnetic interference between them is small. On the other hand, the two motors are arranged at both ends of the main body 1000 in the length direction, rather than in the thickness or height direction of the main body 1000, making the main body 1000 of the wall-mounted air conditioner 10000 in a slender shape, with a slender, light and thin appearance.

[0136] Referring to Figure 8 , the wall-mounted air conditioner 10000 further includes: a fresh air fan 6. The fresh air fan 6 is a centrifugal fan with axial air inlet and radial air outlet. The fresh air fan 6 is located on the side of the heat exchange fan 41 away from the first motor 42, and the fresh air fan 6 is located between the heat exchange fan 41 and the motor housing 531 of the second motor 5.

[0137] Referring to Figures 5 - 8 , the wall-mounted air conditioner 10000 further includes: an exhaust fan 7. The exhaust fan 7 is a centrifugal fan with axial air inlet and radial air outlet. In the length direction of the main body 1000, the exhaust fan 7 is located on the side of the fresh air fan 6 facing the second motor 5, and the exhaust fan 7 is sleeved on the radial outside of the motor housing 531 of the second motor 5.

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

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

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

[0141] Referring to Figures 5 - 8 , the wall-mounted air conditioner 10000 further includes: a fresh air volute 8. A fresh air duct V01 is formed inside the fresh air volute 8. The fresh air fan 6 is installed inside the fresh air volute 8. A fresh air inlet 801 and a fresh air outlet 802 are formed on the fresh air volute 8. When the fresh air fan 6 rotates, outdoor air can enter the fresh air volute 8 from the fresh air inlet 801, and the outdoor air entering the fresh air volute 8 can enter the room from the fresh air outlet 802.

[0142] Referring to Figures 5 - 8 , the wall-mounted air conditioner 10000 further includes: an exhaust air volute 9. The exhaust air volute 9 is located on the side of the fresh air volute 8 facing the second motor 5. An exhaust air duct V02 is formed inside the exhaust air volute 9. The exhaust air fan 7 is installed inside the exhaust air volute 9. An exhaust air inlet 901 and an exhaust air outlet 902 are formed on the exhaust air volute 9. When the exhaust air fan 7 rotates, indoor air can enter the exhaust air volute 9 from the exhaust air inlet 901, and the indoor air entering the exhaust air volute 9 can be discharged to the outside from the exhaust air outlet 902.

[0143] In the solution of this application, the fresh air volute 8 and the fresh air fan 6 construct a fresh air module. The fresh air fan 6 is arranged inside the fresh air duct V01 and is used to drive air flow to be inhaled from the fresh air inlet 801 and discharged to the room through the fresh air outlet 802. The operation of the fresh air fan 6 provides the power for the fresh air to flow.

[0144] Thus, by setting the fresh air duct V01 to cooperate with the fresh air fan 6, when the air in the room is relatively dirty or the air quality is average, the fresh air fan 6 can be used to drive the relatively fresh outdoor air into the indoor environment to improve the indoor air flow environment.

[0145] In the solution of this application, the exhaust air volute 9 and the exhaust air fan 7 construct an exhaust air module. The exhaust air fan 7 is arranged inside the exhaust air duct V02 and is used to drive air flow to be inhaled from the exhaust air inlet 901 and discharged from the exhaust air outlet 902 out of the room. The operation of the exhaust air fan 7 provides the power for the dirty air flow to flow.

[0146] Thus, by setting the exhaust air duct V02 to cooperate with the exhaust fan 7, when the air in the room is relatively dirty or of average air quality, the dirty air flow in the indoor space can be sucked away and discharged by the exhaust fan 7. After the indoor air volume decreases in this way, fresh air will be inhaled from the outside or from other rooms through doors and windows, etc., so as to reduce the degree of dirtiness of the indoor air.

[0147] Referring to Figure 8 , on the wall separating the fresh air duct V01 and the exhaust air duct V02 in the fresh air volute 8 and the exhaust air volute 9, there is a heat transfer part 816, so that heat transfer is carried out between the exhaust air duct V02 and the fresh air duct V01 through the heat transfer part 816, thereby changing the temperature of the air in the fresh air duct V01.

[0148] If there is a large difference in temperature between the outdoor air and the indoor air, heat transfer is carried out between the exhaust air duct V02 and the fresh air duct V01 through the heat transfer part 816, so that the indoor air entering the exhaust air duct V02 from the exhaust air inlet 901 can change the temperature of the outdoor air entering the fresh air duct V01 from the fresh air inlet 801 through the heat transfer part 816, thereby reducing the temperature difference between the fresh air entering the room from the fresh air outlet 802 and the indoor air, and avoiding discomfort caused to people due to too large a temperature difference between the two parts of air.

[0149] For example, if the temperature of the outdoor air is relatively high and the temperature of the indoor air is relatively low, the relatively low-temperature indoor air entering the exhaust air duct V02 from the exhaust air inlet 901 can reduce the temperature of the outdoor air entering the fresh air duct V01 from the fresh air inlet 801 through the heat transfer part 816, and reduce the temperature difference between the fresh air entering the room from the fresh air outlet 802 and the indoor air, and avoid discomfort caused to people due to too high a temperature of the introduced fresh air.

[0150] For another example, if the temperature of the outdoor air is relatively low and the temperature of the indoor air is relatively high, the relatively high-temperature indoor air entering the exhaust air duct V02 from the exhaust air inlet 901 can increase the temperature of the outdoor air entering the fresh air duct V01 from the fresh air inlet 801 through the heat transfer part 816, and reduce the temperature difference between the fresh air entering the room from the fresh air outlet 802 and the indoor air, and avoid discomfort caused to people due to too low a temperature of the introduced fresh air.

[0151] In the solution of the present application, the second motor 5, the fresh air fan 6, the exhaust fan 7, the fresh air volute 8 and the exhaust air volute 9 form a two-way ventilation component, and the two-way ventilation component is arranged in the main body 1000. The two-way ventilation component can provide fresh air for the room and can discharge the indoor air to the outside.

[0152] It should be noted that the operation mode of the two-way ventilation component in the wall-mounted air conditioner 10000 can be set according to actual usage requirements. In some embodiments, the two-way ventilation component can operate in the fresh air mode and the exhaust air mode simultaneously, that is, the fresh air duct V01 and the exhaust air duct V02 can be opened simultaneously. While the indoor polluted air flows to the outdoor space, the fresh air outdoors can also enter the indoor space. Through the combined air flow drive of one in and one out, it is beneficial to increase the improvement efficiency of the air flow in the indoor space, so as to meet the user's needs in time when the user urgently needs to discharge or update the indoor air.

[0153] Moreover, while discharging the indoor air to the outside, fresh outdoor air is supplemented into the indoor, keeping the indoor air volume sufficient and making it easier to suck away the indoor air. For example, when there are irritating gases (such as gases released by home improvement materials), gas leakage of gas or other gases indoors, the two-way ventilation component can be set to operate in the fresh air mode and the exhaust air mode simultaneously to achieve rapid ventilation. And compared with the design of simply introducing fresh air in the conventional fresh air structure, the two-way ventilation component of the present application has a larger purification flow rate per unit time, higher ventilation efficiency and faster purification effect.

[0154] Moreover, during ventilation, it avoids the rapid change of indoor temperature caused by too fast ventilation like directly opening a window, and avoids discomfort of indoor personnel due to sudden rise or fall of temperature. And the position of the main body 1000 is relatively high, and the ventilation position will not cause discomfort due to being too close to people.

[0155] In other embodiments, the two-way ventilation component can operate in the fresh air mode and the exhaust air mode alternatively, that is, when the two-way ventilation component turns on the fresh air mode, the exhaust air mode is shut down. At this time, only the fresh air duct V01 is ventilated, and the exhaust air duct V02 is not ventilated. Or when the two-way ventilation component turns on the exhaust air mode, the fresh air mode is shut down. At this time, the fresh air duct V01 is not ventilated, and the exhaust air duct V02 is ventilated.

[0156] In some embodiments, a two-way ventilation component is provided in the wall-mounted air conditioner 10000, such as Figure 8 shown, the two-way ventilation component includes: a second motor 5, a fresh air fan 6, an exhaust air fan 7, a fresh air volute 8 and an exhaust air volute 9.

[0157] In this embodiment, the fresh air fan 6 is a centrifugal fan with axial air inlet and radial air outlet. The fresh air fan 6 is located on the side of the heat exchange fan 41 away from the first motor 42. The fresh air fan 6 is located between the heat exchange fan 41 and the motor housing 531, and the fresh air fan 6 is connected to the output shaft 532 of the second motor 5.

[0158] In this embodiment, the exhaust fan 7 is a centrifugal fan with axial air intake and radial air outlet. In the length direction of the main body 1000, the exhaust fan 7 is located on the side of the fresh air fan 6 facing the second motor 5. The exhaust fan 7 is sleeved on the radial outer side of the motor housing 531 and is fixedly connected to the motor housing 531. The second motor 5 drives the fresh air fan 6 and the exhaust fan 7 to rotate synchronously in the working state.

[0159] In this embodiment, as Figure 8 shown, a fresh air duct V01 is formed in the fresh air volute 8. The fresh air fan 6 is installed in the fresh air volute 8. As Figure 6 shown, a fresh air inlet 801 and a fresh air outlet 802 are formed on the fresh air volute 8. The rotation of the fresh air fan 6 can allow outdoor air to enter the fresh air volute 8 from the fresh air inlet 801, and can allow the outdoor air entering the fresh air volute 8 to enter the room from the fresh air outlet 802.

[0160] In this embodiment, as Figure 8 shown, the exhaust volute 9 is located on the side of the fresh air volute 8 facing the second motor 5. An exhaust duct V02 is formed in the exhaust volute 9. The exhaust fan 7 is installed in the exhaust volute 9. An exhaust inlet 901 and an exhaust outlet 902 are formed on the exhaust volute 9. The rotation of the exhaust fan 7 can allow indoor air to enter the exhaust volute 9 from the exhaust inlet 901, and can allow the indoor air entering the exhaust volute 9 to be discharged to the outdoor from the exhaust outlet 902.

[0161] In this embodiment, the wall separating the fresh air duct V01 and the exhaust duct V02 in the fresh air volute 8 and the exhaust volute 9 has a heat transfer part 816, so that the air in the exhaust duct V02 can change the temperature of the air in the fresh air duct V01 through the heat transfer part 816.

[0162] In this embodiment, the second motor 5 is located at the end of the main body 1000 in the length direction, and the axis of the second motor 5 is arranged along the length direction of the main body 1000. The second motor 5 is the common power source of the fresh air module and the exhaust air module of the two-way ventilation component. To ensure the operation of the fresh air module and the exhaust air module, the second motor 5 needs to have sufficient operating power to drive sufficient air volume to flow. Based on the power requirement of the second motor 5, the second motor 5 needs to have a sufficiently large size.

[0163] In this embodiment, on the premise that the dimensional parameters of the second motor 5 are generally determined, when arranging the fresh air module and the exhaust air module, what is considered is how to utilize the space where the second motor 5 is located and occupy as little additional space as possible. Among them, in this embodiment, both the fresh air fan 6 and the exhaust air fan 7 adopt centrifugal fans, and the fresh air fan 6 and the exhaust air fan 7 are both connected to the same motor, which not only saves the number of motors, but also keeps the two centrifugal fans arranged in an axial stack along the second motor 5, that is, the two centrifugal fans are arranged in an axial stack along the length direction of the main body 1000.

[0164] In this embodiment, the centrifugal fan itself is relatively flat in the axial direction. The fresh air fan 6 and the exhaust air fan 7 are stacked in this way, which can reduce the overall occupied axial dimension and does not require the main body 1000 to be too long. Since the fresh air fan 6 and the exhaust air fan 7 are connected to the same motor and rotate synchronously, they are in step with each other and do not need to have too much gap between them. The axial distance between the fresh air fan 6 and the exhaust air fan 7 can be arranged relatively close.

[0165] It should be noted that when referring to "axial", "radial", and "circumferential" in describing the internal structure of the two-way ventilation component, they are all based on the axial, radial, and circumferential directions of the motor, that is, the direction parallel to the extension direction of the output shaft 532 of the second motor 5 is the axial direction, the direction perpendicular to the extension direction of the output shaft 532 is the radial direction, and the direction around the output shaft 532 is the circumferential direction.

[0166] In the above solution, by providing a heat transfer part 816 on the wall separating the fresh air duct V01 and the exhaust air duct V02 in the fresh air volute 8 and the exhaust air volute 9, if there is a large temperature difference between the outdoor air and the indoor air, the indoor air entering the exhaust air duct V02 from the exhaust air inlet 901 can change the temperature of the outdoor air entering the fresh air duct V01 from the fresh air inlet 801 through the heat transfer part 816, thereby reducing the temperature difference between the fresh air entering the room through the fresh air outlet 802 and the indoor air, avoiding discomfort caused by too large a temperature difference between the two parts of air, and being beneficial to improving the user experience.

[0167] In this embodiment, the main body part of the second motor 5 is located inside the exhaust air fan 7 rather than the fresh air fan 6, which can give more air flow space to the fresh air duct V01 and is beneficial to the intake of fresh air. It can be understood that when the wall-mounted air conditioner 10000 is in the cooling state, the fresh air module sucks fresh air from the outside to the inside, and the cooling capacity generated by the wall-mounted air conditioner 10000 can still remain in the room with little cooling capacity loss.

[0168] In this embodiment, the indoor air is discharged to the outside through the exhaust module, and the cooling loss can be reduced by setting the exhaust air volume to be smaller than the fresh air volume. Therefore, the second motor 5 occupies the space of the exhaust air duct V02, leaving more fresh air duct V01, which is conducive to ensuring a larger fresh air volume.

[0169] In this embodiment, the fresh air fan 6 is arranged on the side of the exhaust fan 7 facing the indoor heat exchanger 2, which can reduce the indoor cold or heat loss and improve the comfort when the fresh air is blown into the room. Specifically, the fresh air module where the fresh air fan 6 is located is close to the indoor heat exchanger 2, and the fresh air sucked from the outside can absorb the cold or heat released by the indoor heat exchanger 2 before blowing into the room, so that the fresh air is as close to the indoor temperature as possible before blowing into the room.

[0170] In this way, when the wall-mounted air conditioner 10000 is cooling, the fresh air absorbs the coldness of the indoor heat exchanger 2, and the temperature of the fresh air blown in is reduced, so as to avoid blowing the outdoor hot air directly into the room. When the wall-mounted air conditioner 10000 is heating, the fresh air absorbs the heat of the indoor heat exchanger 2, and the temperature of the fresh air blown in is increased, so as to avoid blowing the outdoor cold air directly into the room. The exhaust module where the exhaust fan 7 is located is far from the indoor heat exchanger 2, and the coldness or heat absorbed from the indoor heat exchanger 2 after absorbing air from the room is small, and the coldness or heat loss discharged to the outside is small.

[0171] In this embodiment, the fresh air fan 6 is arranged on the side of the exhaust fan 7 facing the indoor heat exchanger 2, and when the indoor heat exchanger 2 is cooled, the condensed water can also be reduced from entering the air duct. Specifically, the exhaust volute 9 of the exhaust module, its exhaust air inlet 901 takes in air from the room, and the exhaust fan 7 takes in air along the axial direction, so the exhaust air inlet 901 is located on the side of the exhaust volute 9 away from the indoor heat exchanger 2. When there is condensed water on one side of the indoor heat exchanger 2, the condensed water is not easily sucked into the exhaust duct V02 by the exhaust module, reducing the risk of water accumulation and bacterial growth in the exhaust duct V02. When the fresh air module rotates, the fresh air fan 6 takes in air from the outside, and at this time, the condensed water on the indoor heat exchanger 2 will not be sucked into the fresh air duct V01, reducing the risk of water accumulation and bacterial growth in the fresh air duct V01.

[0172] In addition, in this embodiment, the exhaust fan 7 is located on the side of the fresh air fan 6 away from the indoor heat exchanger 2. For the exhaust fan 7 that needs to intake air from the room, the intake air energy consumption it needs is relatively low. Specifically, when the wall-mounted air conditioner 10000 is cooling or heating, the heat exchange fan 41 operates to drive the indoor intake air to flow through the indoor heat exchanger 2. The exhaust fan 7 is located at the end of the main body 1000. The intake end of the exhaust fan 7 is far from the intake end of the heat exchange fan 41. The exhaust fan 7 does not need to suck air from the intake end of the heat exchange fan 41, and the intake air energy consumption of the exhaust fan 7 can be reduced. In this way, sufficient exhaust air volume can be ensured, and it can also ensure that enough indoor air flows through the indoor heat exchanger 2 to obtain sufficient heat exchange air, so that the overall energy consumption of the wall-mounted air conditioner 10000 will not be too high.

[0173] In this embodiment, the fresh air module and the exhaust air module are effectively integrated, enabling the two modules to rationally utilize their respective structural and spatial characteristics to complete the flat design. This not only reduces the overall size and weight of the two-way ventilation component, making the two-way ventilation component overall light and the air ducts not interfering with each other. The two-way ventilation component is arranged at one end in the length direction of the main body 1000. Compared with the main body 1000 without the two-way heat exchange component, only the lateral length is increased, and the height and thickness of the main body 1000 can generally remain unchanged or change little, making the main body 1000 thin and light in appearance. When hung on the wall, it will not affect the indoor space layout due to being too obtrusive, nor will it be difficult to fix the wall-mounted air conditioner 10000 due to being too heavy, reducing the risk of falling off the wall. The wall-mounted air conditioner 10000 as a whole is still a thin and light model. When hung on the wall, it is not only beautiful but also has controllable weight and safe to use.

[0174] Refer to Figure 8 and Figure 9 , in some embodiments, the fresh air volute 8 includes a first volute 81. The first volute 81 is located on the side of the exhaust volute 9 facing the heat exchange fan 41, and the first volute 81 is detachably connected to the exhaust volute 9.

[0175] The fresh air volute 8 further includes a second volute 82. The second volute 82 is located on the side of the first volute 81 facing the heat exchange fan 41, and the second volute 82 is detachably connected to the first volute 81. The first volute 81 is located between the exhaust volute 9 and the second volute 82.

[0176] Furthermore, the first volute 81 includes a first volute end plate 811 and a first volute shroud 812. The first volute shroud 812 extends along the edge of the first volute end plate 811 towards the heat exchange fan 41.

[0177] Among them, refer to Figure 9 , the first volute end plate 811 separates the fresh air duct V01 and the exhaust air duct V02, and the heat transfer part 816 is located on the first volute end plate 811.

[0178] Specifically, the first volute end plate 811 includes an end plate body and a heat transfer portion 816. The end plate body is provided with a through port 815, and the heat transfer portion 816 is located at the through port 815 and is connected to the end plate body. For example, the heat transfer portion 816 can be arranged at the central position of the end plate body or at a position near the outer edge of the end plate body.

[0179] In this application, the fresh air volute 8 is axially divided into at least a first volute 81 and a second volute 82 for separate processing, which can reduce the manufacturing and assembly difficulties. Moreover, for such a complex housing, separate manufacturing facilitates quality control. The first volute 81 is detachably connected to the exhaust volute 9, and the second volute 82 is detachably connected to the first volute 81, which is convenient for assembly and subsequent adjustment and maintenance.

[0180] The first volute 81 is located between the exhaust volute 9 and the second volute 82. The first volute end plate 811 is shared between the exhaust volute 9 and the first volute 81, so that the first volute end plate 811 separates the fresh air duct V01 and the exhaust air duct V02. Such a setting enables no need for an intervening gap between the exhaust volute 9 and the fresh air volute 8, further reducing the axial dimension of the two-way ventilation component and the occupied space in the wall-mounted air conditioner 10000, which is beneficial to the overall thin and light design of the wall-mounted air conditioner 10000.

[0181] The heat transfer portion 816 is arranged on the end plate body of the first volute end plate 811, so that the heat transfer portion 816 is located between the fresh air duct V01 and the exhaust air duct V02. In this way, the indoor air entering the exhaust air duct V02 and the outdoor air entering the fresh air duct V01 can exchange heat under the action of the heat transfer portion 816, enabling the indoor temperature in the exhaust air duct V02 to change the temperature of the outdoor air in the fresh air duct V01, thereby reducing the temperature difference between the fresh air entering the room through the fresh air outlet 802 and the indoor air, and avoiding discomfort caused by too large a temperature difference between the two parts of air.

[0182] In some embodiments, referring to Figure 10 and Figure 11 , the heat transfer portion 816 includes a heat transfer plate 8161.

[0183] When the second motor 5 is in the working state, it drives the fresh air fan 6 and the exhaust air fan 7 to rotate synchronously. The rotation of the fresh air fan 6 can cause outdoor air to enter the fresh air volute 8 from the fresh air inlet 801, and can cause the outdoor air entering the fresh air volute 8 to enter the room from the fresh air outlet 802. The rotation of the exhaust air fan 7 can cause indoor air to enter the exhaust volute 9 from the exhaust air inlet 901, and can cause the indoor air entering the exhaust volute 9 to be discharged to the outside from the exhaust air outlet 902.

[0184] If there is a large temperature difference between the outdoor air and the indoor air, heat transfer is carried out between the exhaust air duct V02 and the fresh air duct V01 through the heat transfer plate 8161, so that the indoor air entering the exhaust air duct V02 from the exhaust air inlet 901 and the outdoor air entering the fresh air duct V01 from the fresh air inlet 801 both exchange heat with the heat transfer plate 8161, thereby changing the air temperature in the fresh air duct V01 to reduce the temperature difference between the fresh air entering the room through the fresh air outlet 802 and the indoor air, and avoiding discomfort caused to people due to too large a temperature difference between the two parts of air.

[0185] Among them, the through-hole 815 can be arranged to penetrate along the thickness direction of the end plate body. The through-hole 815 can be arranged at the central position of the end plate body; it can also be arranged at a position close to the outer edge of the end plate body. The hole wall surface of the through-hole 815 can be a wall surface with a smooth contour to simplify the processing steps of the through-hole 815; the hole wall surface of the through-hole 815 can also have a stepped surface, so that the stepped surface can limit the heat transfer plate 8161. The number of through-holes 815 can be one or multiple, and can be specifically selected according to needs.

[0186] The heat transfer part 816 is set to include the heat transfer plate 8161, and the heat transfer plate 8161 is arranged in the through-hole 815. On the one hand, it can avoid increasing the overall thickness dimension of the first volute end plate 811, and on the other hand, it enables the outdoor air entering the fresh air duct V01 and the indoor air entering the exhaust air duct V02 to directly contact the heat transfer plate 8161, thereby improving the heat exchange efficiency of the outdoor air in the fresh air duct V01 and the indoor air entering the exhaust air duct V02, so as to quickly change the air temperature in the fresh air duct V01.

[0187] Furthermore, a perforation part 814 is provided at the center of the heat transfer plate 8161, and the output shaft 532 of the second motor 5 is connected to the fresh air fan 6 through the perforation part 814. The opening size of the perforation part 814 can be larger than the cross-sectional size of the output shaft 532 of the second motor 5, so that there is a gap between the hole wall of the perforation part 814 and the output shaft 532 of the second motor 5, preventing the output shaft 532 of the second motor 5 from interfering with the heat transfer plate 8161 and enabling the output shaft 532 of the second motor 5 to rotate normally.

[0188] In addition, the indoor air entering the exhaust air duct V02 can also enter the fresh air duct V01 through the gap between the hole wall of the perforation part 814 and the output shaft 532 of the second motor 5, thereby directly changing the air temperature in the fresh air duct V01 and reducing the temperature difference between the fresh air and the indoor air in the fresh air duct V01.

[0189] Optionally, the heat transfer plate 8161 is a metal plate or a graphite plate. For example, the metal plate can be an aluminum alloy.

[0190] Among them, the heat transfer plate 8161 can be bonded to the end plate body of the first volute end plate 811; the heat transfer plate 8161 can also be fixed to the end plate body of the first volute end plate 811 through fixing members; alternatively, the heat transfer plate 8161 can be used as an insert, and the end plate body can be formed by an injection molding process, thereby connecting the heat transfer plate 8161 and the end plate body together.

[0191] The heat transfer plate 8161 is set as a metal plate, so that the indoor air entering the exhaust air duct V02 from the exhaust air inlet 901 and the outdoor air entering the fresh air duct V01 from the fresh air inlet 801 can exchange heat through the metal plate, improving the heat exchange efficiency between the indoor air in the exhaust air duct V02 and the outdoor air in the fresh air duct V01. Thus, the temperature difference between the fresh air entering the room through the fresh air outlet 802 and the indoor air can be reduced in a short time, further avoiding discomfort caused by the too large temperature difference between the two parts of air to people.

[0192] In some embodiments, please refer to Figure 8 and Figure 9 , the exhaust fan 7 includes an exhaust wheel disc 71 and exhaust blades 72. The exhaust blades 72 are located at the edge of the exhaust wheel disc 71, and the exhaust blades 72 extend along the axial direction of the exhaust wheel disc 71 away from the fresh air fan 6.

[0193] The exhaust fan 7 further includes a protrusion 74 provided on the exhaust wheel disc 71. The center of the protrusion 74 can be located on the axis of the exhaust fan 7, and the protrusion 74 extends in the direction of the fresh air fan 6 relative to the exhaust fan 7, so as to form a receiving groove V07 for the second motor 5 on the side of the protrusion 74 close to the second motor 5.

[0194] Among them, a recessed portion 813 facing the fresh air fan 6 is formed in the central partial area of the first volute end plate 811, and at least a part of the protrusion 74 is located in the recessed portion 813.

[0195] Furthermore, a perforated portion 814 is provided at the center of the recessed portion 813, and the output shaft 532 of the second motor 5 is connected to the fresh air fan 6 through the perforated portion 814.

[0196] By providing the protrusion 74 at the center of the exhaust wheel disc 71 and forming the recessed portion 813 at the center of the first volute end plate 811, on the one hand, the hub of the exhaust fan 7 is used to form the protrusion 74 to accommodate the second motor 5, and the protrusion 74 can improve the structural strength of the exhaust fan 7. On the other hand, the main body part of the second motor 5 is assembled in the protrusion 74, occupying more of the exhaust air duct V02 and less of the fresh air duct V01, which matches the design that the fresh air volume is greater than the exhaust air volume. Only the output shaft 532 passes through the first volute end plate 811, which helps with sealing, reduces the chance of mutual flow between the fresh air and the exhaust air, and reduces air flow disturbance.

[0197] In addition, it is also beneficial to reduce the distance between the main body of the second motor 5 and the fresh air fan 6, thereby facilitating the reduction of the axial distance between the fresh air fan 6 and the main body of the second motor 5, reducing the bending moment generated by the fresh air fan 6 on the output shaft 532. When the second motor 5 operates, the coaxiality of the fresh air fan 6 and the exhaust fan 7 is relatively high, and they are not prone to shaking, which can avoid wear and vibration caused by friction with the volute casing.

[0198] In some embodiments, referring to Figures 8 - 9 , the second motor 5 includes a stator part 51 and a rotor part 52, and the stator part 51 and the rotor part 52 are the main body parts of the second motor 5. The stator part 51 is wound with coils, and an alternating magnetic field is generated after alternating current is passed through the coils. The rotor part 52 generates induction and rotates in the alternating magnetic field.

[0199] Optionally, the rotor part 52 can be a magnetic ring or a magnetic tile, and the magnetic ring is preferably used for the rotor part 52. In this way, magnetic leakage loss can be reduced, magnetic flux can be enhanced, and the power output efficiency of the second motor 5 can be improved. Moreover, when a magnetic ring is used, the magnetic field distribution is uniform, the anti-interference ability is good, and the mechanical accuracy is higher.

[0200] The second motor 5 is an outer rotor motor, and the rotor part 52 is arranged around the outside of the stator part 51 in the radial direction of the stator part 51. Selecting an outer rotor motor for the second motor 5 not only has a simple structure, but also because the rotor part 52 is arranged around the outside of the stator part 51 in the radial direction of the stator part 51, the diameter size of the rotor part 52 is large, and a relatively large torque can be obtained, which can be used in scenarios such as low-speed high-torque and direct drive. That is, when the second motor 5 outputs power outward, a speed reducer does not need to be set to reduce speed and increase torque, saving the space occupied by the speed reducer.

[0201] In addition, the rotor part 52 is located radially outside the stator part 51, with a relatively large heat dissipation area and good heat dissipation performance, which is beneficial to the stable operation of the second motor 5. Moreover, after being arranged in this way, the diameter size of the second motor 5 can be controlled to be relatively small, and it will not occupy the space of the air flow channel.

[0202] Referring to Figures 8 - 9 , Figures 13 - 14 , the second motor 5 further includes a motor housing 531, and the motor housing 531 can support and protect the main body part of the second motor 5. The motor housing 531 is fixedly connected to the rotor part 52, so that the motor housing 531 and the rotor part 52 rotate synchronously. In this way, the rotor part 52 can be fixed by the motor housing 531, which is convenient for connecting with external structures.

[0203] The second motor 5 further includes an output shaft 532, and the output shaft 532 is fixedly connected to the motor housing 531, so that the output shaft 532, the motor housing 531 and the rotor part 52 rotate synchronously.

[0204] Among them, the fresh air fan 6 is located between the heat exchange fan 41 and the motor housing 531, and the fresh air fan 6 is connected to the output shaft 532 of the second motor 5. The exhaust fan 7 is fixedly connected to the motor housing 531.

[0205] The second motor 5 is an outer rotor motor. The exhaust fan 7 is sleeved on the radial outer side of the motor housing 531. A part of the second motor 5 in the motor housing 531 is embedded in the exhaust fan 7, and a part of the output shaft 532 is embedded in the fresh air fan 6, so that in the length direction of the main body 1000, the second motor 5 almost overlaps with the exhaust fan 7 and the fresh air fan 6, and the parts of the exhaust fan 7 and the fresh air fan 6 located outside the second motor 5 in the axial direction are less, making the overall axial dimension of the two-way ventilation component close to the axial dimension of the second motor 5, so that the length dimension of the main body 1000 is controllable.

[0206] Moreover, since the second motor 5 is an outer rotor motor that can adapt to scenarios such as low-speed high torque and direct drive, a speed reducer does not need to be provided, and the exhaust fan 7 can be directly sleeved on the radial outer side of the motor housing 531. This not only avoids the increase in the overall axial dimension caused by the speed reducer but also avoids the increase in the difficulty of structural layout. Just fixedly connecting the exhaust fan 7 to the motor housing 531 and connecting the fresh air fan 6 to the output shaft 532 of the second motor 5 can make the exhaust fan 7 and the fresh air fan 6 arranged coaxially and stacked, rotate synchronously, and maintain a small gap without being too large. In this way, it also ensures that the overall axial dimension of the two-way ventilation component is close to the axial dimension of the second motor 5, and the length dimension of the main body 1000 is controllable.

[0207] In some embodiments, referring to Figure 8 and Figure 9 、 Figure 15 In the exhaust fan 7, a receiving groove V07 is formed at the center in the radial direction, and at least a part of the stator part 51, at least a part of the rotor part 52, and at least a part of the motor housing 531 of the second motor 5 are accommodated in the receiving groove V07.

[0208] Specifically, the hub of the exhaust fan 7 forms the receiving groove V07. At this time, the main body part (i.e., the stator part 51 and the rotor part 52) of the second motor 5 and the motor housing 531 can be placed at the center of the exhaust fan 7, which will not hinder the flow of the exhaust air, and can make full use of the hub space of the exhaust fan 7 to reduce the external occupied space of the second motor 5.

[0209] Moreover, after the hub of the exhaust fan 7 is sleeved on the outside of the second motor 5, it has a protective effect, and can also make the center of mass of the exhaust fan 7 as close as possible to the center of the rotor part 52. As a result, the bending moment generated by the exhaust fan 7 on the second motor 5 is small, the exhaust fan 7 shakes less when rotating, the exhaust fan 7 operates stably and has low energy consumption.

[0210] In some embodiments, referring to Figure 8 and Figure 9 , the exhaust volute 9 includes a wind guiding ring 91. The wind guiding ring 91 is in the shape of a circular tube, and the diameter of the wind guiding ring 91 gradually decreases in the direction towards the heat exchange fan 41. The area surrounded by the wind guiding ring 91 forms an exhaust air inlet 901. The setting of the wind guiding ring 91 can effectively collect the dispersed air flow, converge it into a relatively concentrated air flow and send it into the exhaust fan 7, making the air intake smoother and more efficient, and increasing the air intake volume of the exhaust fan 7.

[0211] Moreover, after the shape and angle of the wind guiding ring 91 are reasonably designed, the air flow can enter the exhaust blades 72 of the exhaust fan 7 at the best angle, improving the working efficiency of the exhaust fan 7. When unstable air flow fluctuations are inhaled, the wind guiding ring 91 can play a role in stabilizing the air flow, reducing the turbulence and fluctuations of the air flow, enabling the exhaust fan 7 to operate more smoothly. It can reduce noise and vibration and extend the service life of the exhaust fan 7.

[0212] Furthermore, referring to Figures 8 - 9 and Figure 15 , the exhaust fan 7 includes: an exhaust wheel disc 71 and exhaust blades 72. The exhaust wheel disc 71 is connected to the motor housing 531 of the second motor 5. The exhaust blades 72 are connected to the side of the exhaust wheel disc 71 away from the heat exchange fan 41. There are multiple exhaust blades 72, and the multiple exhaust blades 72 are arranged circumferentially.

[0213] Even further, the edge of the exhaust blade 72 away from the exhaust wheel disc 71 is a blade side edge 721. The distance between the part of the blade side edge 721 close to the second motor 5 and the exhaust wheel disc 71 decreases, and all the exhaust blades 72 form a side edge depression 73 at the place where the distance of the blade side edge 721 decreases. The end of the wind guiding ring 91 is located within the side edge depression 73.

[0214] That is to say, the exhaust blades 72 of the exhaust fan 7 are concave blades, and both the wind guiding ring 91 and the concave blades are recessed towards the fresh air fan 6. The wind guiding ring 91 partially enters the side edge depression 73 formed by the concave blades. With such a setting, the wind guiding ring 91 and the exhaust fan 7 can have partial overlap in the axial direction. On the premise of setting the wind guiding ring 91, it is not necessary to increase the axial dimension of the exhaust volute 9.

[0215] In some embodiments, at least one of the fresh air fan 6 and the exhaust fan 7 includes: a wheel disc and blades connected to the wheel disc, and a transition fillet structure is provided at the connection between the blades and the wheel disc.

[0216] For example, specifically, the exhaust fan 7 includes an exhaust wheel disc 71 and exhaust blades 72. The exhaust blades 72 are connected to one side of the exhaust wheel disc 71 away from the heat exchange fan 41. There are multiple exhaust blades 72, and the multiple exhaust blades 72 are arranged circumferentially. A transition fillet structure is provided at the connection between the exhaust blades 72 and the exhaust wheel disc 71. This can reduce the concentrated stress at the connection between the exhaust blades 72 and the exhaust wheel disc 71 and improve the overall strength. In addition, when the air flow flows axially towards the exhaust wheel disc 71, the air flow can be guided by the transition fillet structure under the drive of the pressure difference. There is less turbulence when the air flow turns, which is beneficial to reducing energy consumption.

[0217] Another example, specifically, the fresh air fan 6 includes a fresh air wheel disc 61 and fresh air blades 62. The fresh air blades 62 are connected to the fresh air wheel disc 61. There are multiple fresh air blades 62, and the multiple fresh air blades 62 are newly arranged circumferentially. A transition fillet structure is provided at the connection between the fresh air blades 62 and the fresh air wheel disc 61. This can reduce the concentrated stress at the connection between the fresh air blades 62 and the fresh air wheel disc 61 and improve the overall strength. In addition, when the air flow flows axially towards the fresh air wheel disc 61, the air flow can be guided by the transition fillet structure under the drive of the pressure difference and flow more smoothly towards the fresh air blades 62, which is beneficial to reducing energy consumption.

[0218] In some embodiments, the accommodation cavity V1 in the main body 1000 is partitioned into a first chamber V11 and a second chamber V12, as Figure 2 shown by the dashed line box in the figure. The indoor heat exchanger 2 is located in the first chamber V11, and at least part of the two-way ventilation component is arranged in the second chamber V12. The heat exchange air inlet 101 and the heat exchange air outlet 102 on the housing 1 are correspondingly arranged for the first chamber V11, and the housing air inlet 103 and the housing air outlet 105 on the housing 1 are correspondingly arranged for the second chamber V12.

[0219] With this setting, the accommodation cavity V1 is partitioned into the first chamber V11 and the second chamber V12. The air flow inside the second chamber V12 will not be affected by the drive of the heat exchange fan 41. The exhaust air inlet 901 can directly intake air from the second chamber V12. There is no need to connect pipes between the housing air inlet 103 and the exhaust air inlet 901, which not only reduces the space occupied by the pipe body, but also the position of the housing air inlet 103 can be flexibly selected.

[0220] In the solution of the present application, a vertically arranged partition plate can be provided in the housing 1 to separate the first chamber V11 and the second chamber V12, or the first chamber V11 and the second chamber V12 can be separated by the fresh air volute 8 or the base 3, or a combination of the two.

[0221] For example, as Figure 4In some of the specific embodiments shown, the indoor heat exchanger 2 and the heat exchange fan 41 are installed on the base 3. End plates 31 are provided at both lateral ends of the base 3. Both ends of the indoor heat exchanger 2 are installed on the two end plates 31, and both ends of the heat exchange fan 41 are installed on the two end plates 31.

[0222] Optionally, the end plate 31 adjacent to the fresh air volute 8 is set as a solid plate. Through the cooperation between this end plate 31 and the inner wall of the casing 1, the accommodation cavity V1 is divided into a first chamber V11 and a second chamber V12. Such a setting can save the setting of the spacer plate. At this time, the two-way ventilation component can be installed on the adjacent end plate 31. Or optionally, as Figure 4 shown, a positioning convex hull 8221 is formed on the side of the blower housing 822 facing the indoor heat exchanger 2. One end of the base 3 adjacent to the blower housing 822 has an end plate 31. The positioning convex hull 8221 and the positioning recess 311 are inserted and matched with each other. Thus, after the blower housing 822 is matched with the adjacent end plate 31, the positioning recess 311 is blocked, and the accommodation cavity V1 is divided into a first chamber V11 and a second chamber V12.

[0223] In some embodiments, referring to Figures 1 - 3 , the air inlet 103 of the casing is located on the top wall of the main body 1000. Since the wall-mounted air conditioner 10000 is hung high on the wall, the air inlet 103 of the casing located on the top wall of the main body 1000 is not easily visible to people's sight, so the appearance of the main body 1000 can be kept beautiful. A first continuous ventilation duct V04 is formed between the air inlet 103 of the casing and the exhaust air inlet 901. The exhaust fan 7 rotates to drive the indoor air to enter the first continuous ventilation duct V04 from the air inlet 103 of the casing, and the indoor air enters the exhaust air volute 9 through the exhaust air inlet 901.

[0224] In some embodiments, the wall-mounted air conditioner 10000 further includes an electric control box 13. The electric control box 13 is located at one lateral end of the heat exchange fan 41, and the two-way ventilation component is located at the other lateral end of the heat exchange fan 41. That is to say, the two-way ventilation component and the electric control box 13 are located at the two lateral ends of the heat exchange fan 41, and the operation of the two-way ventilation component has little interference with the electric control box 13.

[0225] In some other embodiments, the wall-mounted air conditioner 10000 further includes an electric control box 13. The electric control box 13 and the two-way ventilation component are located at the same lateral end of the heat exchange fan 41, and the electric control box 13 is located on the top of the two-way ventilation component. Such a setting further helps to control the length of the wall-mounted air conditioner 10000.

[0226] In the solution of this application, in order to make the wall-mounted air conditioner 10000 more secure and reliable, the external dimensions of the main body 1000 are strictly controlled. In this way, not only are the internal part clearances small and not easily loosened, but also each air duct can be designed shorter, the size of the casing 1 is reduced, thereby reducing the overall weight of the main body 1000, making it safer to hang on the wall and thinner and lighter visually.

[0227] When controlling the size of the main body 1000, how to reduce the structural size of the two-way ventilation component is the key. What needs to be ensured first in the two-way ventilation component is that the second motor 5 can output sufficient power to meet the requirements of the exhaust air volume and the fresh air volume. Therefore, the choice of the thickness dimension of the second motor 5, especially the total thickness h3 of the stator part 51, the rotor part 52 and the motor housing 531 in the axial direction, is crucial.

[0228] In some embodiments, referring to Figure 16 , the fresh air fan 6 includes a fresh air wheel disc 61 and fresh air blades 62. The fresh air blades 62 are located at the outer edge of the fresh air wheel disc 61, and the fresh air blades 62 extend along the axial direction of the fresh air wheel disc 61.

[0229] The exhaust fan 7 includes an exhaust wheel disc 71 and exhaust blades 72. The exhaust blades 72 are located at the edge of the exhaust wheel disc 71, and the exhaust blades 72 extend along the axial direction of the exhaust wheel disc 71 away from the fresh air fan 6.

[0230] Referring to Figure 14 and Figure 16 , the total thickness of the fresh air wheel disc 61 and the fresh air blades 62 in the axial direction is h1; the total thickness of the stator part 51, the rotor part 52 and the motor housing 531 in the axial direction is h3, where h1 > h3. In this way, it also ensures that the fresh air volume is large, and the second motor 5 does not need to occupy too much air duct space.

[0231] In some embodiments, referring to Figure 14 and Figure 15 , the total thickness of the exhaust wheel disc 71 and the exhaust blades 72 in the axial direction is h2; the total thickness of the stator part 51, the rotor part 52 and the motor housing 531 in the axial direction is h3; where h3 > h2.

[0232] It can be understood that the second motor 5 needs to drive the fresh air fan 6 and the exhaust fan 7 at the same time. Although the exhaust air volume is designed to be small, the fresh air volume is designed to be large. Therefore, the total thickness h3 of the stator part 51, the rotor part 52 and the motor housing 531 in the axial direction is set to be greater than the axial thickness h2 of the main body part of the exhaust fan 7 to ensure that the second motor 5 can support the rotation of the two fans and improve the sufficient supporting force of the second motor 5.

[0233] In some embodiments, referring to Figure 16, the fresh air fan 6 includes a fresh air wheel disc 61 and fresh air blades 62. The fresh air blades 62 are located at the outer edge of the fresh air wheel disc 61, and the fresh air blades 62 extend along the axial direction of the fresh air wheel disc 61.

[0234] The exhaust fan 7 includes an exhaust wheel disc 71 and exhaust blades 72. The exhaust blades 72 are located at the edge of the exhaust wheel disc 71, and the exhaust blades 72 extend along the axial direction of the exhaust wheel disc 71 away from the fresh air fan 6.

[0235] Referring to Figure 15 and Figure 16 , the total thickness of the fresh air wheel disc 61 and the fresh air blades 62 in the axial direction is h1; the total thickness of the exhaust wheel disc 71 and the exhaust blades 72 in the axial direction is h2; wherein, h1 < h2.

[0236] With such a setting, while ensuring that the fresh air volume is greater than the exhaust air volume, the axial thickness of the main body part of the fresh air fan 6 is larger, so that the structural strength is greater and it can bear a greater torque. And the exhaust air volume requirement of the exhaust fan 7 is small, and the smaller axial thickness of the main body part can appropriately reduce the exhaust air volume and at the same time reduce the axial dimension of the two-way ventilation component.

[0237] Referring to Figure 15 and Figure 16 , in some embodiments, the area of the outer circular surface of the fresh air fan 6 is S1, and the area of the outer circular surface of the exhaust fan 7 is S2, satisfying S1 > S2.

[0238] Referring to Figure 16 , S1 = ΠD1 * h1, D1 is the outer diameter of the fresh air fan 6, and h1 is the total thickness of the fresh air wheel disc 61 and the fresh air blades 62 of the fresh air fan 6 in the axial direction.

[0239] The outer diameter D1 of the fresh air fan 6 refers to the diameter dimension of the point on the fresh air fan 6 that is farthest from the axis of the fresh air fan 6. The fresh air fan 6 includes: a fresh air wheel disc 61 and fresh air blades 62. The fresh air blades 62 are located at the outer edge of the fresh air wheel disc 61, and the fresh air blades 62 extend along the axial direction of the fresh air wheel disc 61. The total thickness of the fresh air wheel disc 61 and the fresh air blades 62 in the axial direction is h1.

[0240] Here, the fresh air wheel disc 61 on the fresh air fan 6 can be one or at least two axially spaced apart. On each side of the axial direction of each fresh air wheel disc 61, only one circle of fresh air blades 62 can be arranged on one side, or one circle of fresh air blades 62 can be arranged on each side. When all the fresh air wheel discs 61 and the fresh air blades 62 are projected perpendicularly onto the axis of the fresh air fan 6, the distance between the two farthest points in the projection is equal to h1.

[0241] Referring to Figure 15, S2 = ΠD2*h2, where D2 is the outer diameter of the exhaust fan 7, and h2 is the total axial thickness of the exhaust wheel disc 71 and the exhaust blades 72 of the exhaust fan 7.

[0242] The outer diameter D2 of the exhaust fan 7 refers to the diameter dimension at the farthest point from the axis of the exhaust fan 7. The exhaust fan 7 includes an exhaust wheel disc 71 and exhaust blades 72. The exhaust blades 72 are located at the outer edge of the exhaust wheel disc 71 and extend along the axial direction of the exhaust wheel disc 71. The total axial thickness of the exhaust wheel disc 71 and the exhaust blades 72 is h2.

[0243] Here, the exhaust wheel disc 71 on the exhaust fan 7 can be one, or at least two axially spaced apart. On each side of the exhaust wheel disc 71 in the axial direction, only one row of exhaust blades 72 can be provided on one side, or one row of exhaust blades 72 can be provided on each side. When all the exhaust wheel discs 71 and the exhaust blades 72 are projected vertically onto the axis of the exhaust fan 7, the distance between the two farthest points in the projection is equal to h2.

[0244] With such a setting, the outer circular surface area of the fresh air fan 6 is large, and the outer circular surface area of the exhaust fan 7 is small, which is beneficial to achieving a large fresh air volume under the condition of limited overall machine space size.

[0245] Optionally, according to the structural and functional requirements designed in this application, the outer diameter D1 of the fresh air fan 6 is greater than the outer diameter D2 of the exhaust fan 7, which is beneficial to making the area swept by the fan blades of the fresh air fan 6 when rotating greater than the area swept by the fan blades of the exhaust fan 7 when rotating. In this way, the fresh air volume is greater than the exhaust air volume, meeting the design requirements of the wall-mounted air conditioner 10000. That is, air is inhaled from the infinite outdoor space and sent indoors, which consumes less energy compared to sucking air from the relatively enclosed indoor space and exhausting it outdoors. Moreover, the air freshness in the outdoor environment is high, and inhaling air from the outdoor and blowing it into the indoor is more conducive to supplementing fresh air in the indoor space, supplementing the oxygen content and reducing the carbon dioxide content in the indoor air.

[0246] Moreover, by setting the outer diameter D2 of the exhaust fan 7 to be smaller than the outer diameter D1 of the fresh air fan 6, it is easy to make the exhaust air outlet 902 of the exhaust air duct V02 and the fresh air outlet 802 of the fresh air duct V01 be misaligned on the outer periphery of the two-way ventilation component. On the one hand, it is convenient to connect the exhaust air lead-out pipe 142 to the exhaust air outlet 902 and the fresh air inlet pipe 141 to the fresh air outlet 802. On the other hand, it is easy to ensure that the flow paths of the fresh air and the exhaust air in the two-way ventilation component do not cross.

[0247] Correspondingly, the outer diameter of the exhaust air volute 9 is smaller than that of the fresh air volute 8. In this way, it is easy to arrange the exhaust air outlet 902 of the exhaust air duct V02 and the fresh air outlet 802 of the fresh air duct V01 in a staggered manner on the outer periphery of the two-way ventilation component, which is convenient for connecting the exhaust air leading pipe 142 to the exhaust air outlet 902 and the fresh air introducing pipe 141 to the fresh air outlet 802, avoiding interference caused by the too-close distance between the two pipe joints, and being convenient for both assembly and sealing.

[0248] In addition, by setting the outer diameter of the exhaust air volute 9 to be relatively small, more space can be vacated on the outer side in the radial direction of the exhaust air volute 9, enabling air to flow in the space on the outer side of the exhaust air volute 9 in the radial direction inside the casing 1. In this way, when the exhaust air volute 9 sucks in air from the exhaust air inlet 901, more air can enter, which is beneficial to increasing the exhaust air intake volume.

[0249] In some embodiments, as Figure 20 shown, an indoor exhaust air outlet 903 for communicating with the interior is formed on the exhaust air volute 9. When the exhaust air fan 7 rotates, the indoor air entering the exhaust air volute 9 can be discharged from the indoor exhaust air outlet 903 to the interior. That is to say, the exhaust air module can also be set for the internal circulation of indoor air, promoting the circulating flow of indoor air without sending the indoor air to the outside.

[0250] In some embodiments, referring to Figures 8 - 9 、 Figure 16 , the fresh air fan 6 includes: a fresh air wheel disc 61 and fresh air blades 62. The fresh air wheel disc 61 is coaxially arranged with the second motor 5, and the fresh air wheel disc 61 is connected to the output shaft 532 of the second motor 5. The fresh air blades 62 include first fresh air blades 621, and the first fresh air blades 621 extend from the fresh air wheel disc 61 in a direction away from the exhaust air fan 7. The blade cylinder formed after the first fresh air blades 621 are arranged circumferentially is open towards the axial air inlet end, facilitating air intake, reducing the air suction resistance, and ensuring the fresh air intake volume.

[0251] Specifically, referring to Figure 9 and Figure 16 , the fresh air blades 62 further include second fresh air blades 622, and the second fresh air blades 622 extend from the fresh air wheel disc 61 in a direction close to the exhaust air fan 7. In this way, the fresh air fan 6 includes double-layer centrifugal blades. Thus, in the case of meeting the large air volume requirement, the double-layer centrifugal blade structure design helps to increase the overall structural strength of the centrifugal fan.

[0252] Further, in the axial direction of the fresh air fan 6, the length h12 of the second fresh air blade 622 is less than the length h11 of the first fresh air blade 621. Here, the first fresh air blade 621 faces the axial air inlet end. Therefore, the axial length of the first fresh air blade 621 is larger, which is beneficial to obtaining a larger fresh air intake volume by using the first fresh air blade 621. And the shorter second fresh air blade 622 is adopted to supplement the fresh air intake. Moreover, the first fresh air blade 621 on the windward side is longer, which is beneficial to reducing noise while ensuring the fresh air volume.

[0253] Furthermore, referring to Figure 17 , a wheel disc hole 612 is formed on the fresh air wheel disc 61. The wheel disc hole 612 is used for one side of the second fresh air blade 622 to suck air through the wheel disc hole 612. The distance from the wheel disc hole 612 to the center of the fresh air wheel disc 61 is less than the distance from the fresh air blade 62 to the center of the fresh air wheel disc 61.

[0254] That is to say, the wheel disc hole 612 is closer to the center of the fresh air wheel disc 61 relative to the fresh air blade 62. This is beneficial to guiding the air flow to be axially sucked into the space where the second fresh air blade 622 is located when the second fresh air blade 622 sucks air from the wheel disc hole 612, and reducing the turbulent flow generated by competing for air with the first fresh air blade 621.

[0255] In some embodiments, referring to Figures 8 - 9 , Figures 18 - 20 , the second volute 82 includes: a second volute half body 821. The second volute half body 821 is located on the side of the first volute 81 facing the heat exchange fan 41, and the second volute half body 821 is detachably connected to the first volute 81. An axial ventilation port 8211 is provided at the center of the second volute half body 821 in the radial direction. A volute cavity V011 is formed between the second volute half body 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 faces the axial ventilation port 8211. The second volute half body 821 and the first volute 81 enclose a fresh air outlet 802.

[0256] The second volute 82 further includes: a fan cover 822. The fan cover 822 is located on the side of the second volute half body 821 facing the heat exchange fan 41, and the fan cover 822 is detachably connected to the second volute half body 821. The cavity enclosed by the fan cover 822 and the second volute half body 821 is a fresh air cavity V012, and the fan cover 822 and the second volute half body 821 enclose a fresh air inlet 801.

[0257] After such a setting, a fresh air cavity V012 is formed at the air inlet end of the fresh air fan 6. The formed fresh air cavity V012 can cover the axial air inlet end of the fresh air fan 6, and the fresh air cavity V012 can be used to accommodate air, so that the air can enter the fresh air fan 6 vertically along the axis from the fresh air cavity V012, thereby improving the air suction efficiency of the fresh air fan 6 and reducing the air suction loss.

[0258] Among them, the fan cover 822 is located on the side of the second volute half 821 facing the indoor heat exchanger 2, so that the volute cavity V011 can be separated from the indoor heat exchanger 2. When the indoor heat exchanger 2 cools, the indoor heat exchanger 2 can absorb the heat in the fresh air cavity V012, gradually reducing the fresh air temperature. With the separation of the fan cover 822, the indoor heat exchanger 2 is far from the volute cavity V011, and the cooling capacity of the indoor heat exchanger 2 to the air in the volute cavity V011 decreases, and the air in the volute cavity V011 is not likely to be supercooled to generate condensed water.

[0259] In this way, the inhaled fresh air can be cooled without being supercooled to generate condensed water. Moreover, even if condensed water is generated in the fresh air cavity V012, the condensed water is likely to remain in the fresh air cavity V012 and is not likely to enter the volute cavity V011 and then be blown into the room, avoiding the situation of water blowing in the fresh air module. When the indoor heat exchanger 2 heats, the indoor heat exchanger 2 can absorb the cold in the fresh air cavity V012, gradually increasing the fresh air temperature. Subsequently, the heated air enters the volute cavity V011 and is fully mixed, making the hot air blown out from the fresh air module milder.

[0260] In some embodiments, referring to Figure 18 and Figure 19 , the wall-mounted air conditioner further includes: a purification member 11, and the purification member 11 is installed in the fresh air cavity V012, so that the fresh air blown into the room is purified, improving the cleanliness of the indoor air.

[0261] Specifically, the purification member 11 is installed in the fresh air cavity V012, that is to say, the purification member 11 is located at the axial air inlet end of the fresh air fan 6. When the fresh air fan 6 rotates, outdoor air can enter the fresh air volute 8 from the fresh air inlet 801, and the outdoor air entering the fresh air volute 8 can be blown through the purification member 11 and then enter the room from the fresh air outlet 802.

[0262] In this way, the fresh air flow can almost vertically pass through the purification member 11, and the fresh air inlet consumption can be further reduced, thereby increasing the fresh air volume. Moreover, when the indoor heat exchanger 2 is in the cooling state and condensed water is generated in the fresh air, the condensed water can remain on the purification member 11 when the air flows through the purification member 11, further avoiding the situation of water blowing when the fresh air module blows out air.

[0263] Furthermore, the purification member 11 is connected to the second volute 82, which is convenient for the assembly of the purification member 11 and does not interfere with the fresh air fan 6.

[0264] Optionally, the purification member 11 includes a filter net 111, and the filter net 111 covers the axial ventilation opening 8211. The filter net 111 covers the entire air inlet end of the fresh air fan 6. The filter net 111 has a large covering area and a large filtering area, and thus has a good filtering effect. The setting of the filter net 111 helps to ensure sufficient contact area with the flowing air, and has a light weight and low air passing noise. Optionally, the filter net 111 is a Hepa net, and thus has a strong adsorption force and a strong filtering effect on dust in the air.

[0265] Optionally, the filter net 111 is plate-shaped, so that the overall thickness of the filter net 111 is relatively thin, and it will not occupy too large a size when placed in the two-way ventilation assembly.

[0266] Optionally, the filter net 111 is square, which facilitates the positioning and installation of the filter net 111.

[0267] Furthermore, the filter net 111 is a square net, and the side length of the filter net 111 is greater than the diameter of the axial ventilation opening 8211. The square net is convenient for positioning during fixation, is not easy to shake after fixation, and is easy to process with less processing waste. Making the side length of the filter net 111 greater than the diameter of the axial ventilation opening 8211 enables all the fresh air flowing into the axial ventilation opening 8211 to flow through the filter net 111, resulting in a high filtering cleanliness.

[0268] In some embodiments, a part of the fresh air cavity V012 forms an empty cavity V0121. The cavity V0121 is located on the side of the purification member 11 away from the fresh air fan 6, and the fresh air inlet 801 communicates with the cavity V0121.

[0269] That is to say, the purification member 11 is arranged at a position in the fresh air cavity V012 close to 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 wind of the purification member 11 and the inner surface of the fan cover 822. In this way, the cavity V0121 is in a negative pressure state when the fresh air fan 6 operates, enabling the air flow to automatically flow from the fresh air inlet 801 into the cavity V0121 and reducing the air flow resistance.

[0270] The cavity V0121 is equivalent to the air inlet negative pressure cavity of the fresh air fan 6, and the setting of the air inlet negative pressure cavity has many advantages:

[0271] 1. Improve the air intake efficiency. Specifically, by setting up a negative pressure chamber, the buffer space on the air suction side of the fresh air fan 6 is increased, making it easier for the fresh air fan 6 to suck in air, thereby increasing the air intake volume of the fresh air fan 6. Moreover, due to the existence of the negative pressure chamber, the fresh air is buffered and adjusted in the negative pressure chamber before entering the fresh air fan 6, reducing the fluctuations and turbulences of the fresh air flow, which is beneficial to improving the air intake stability of the fresh air fan 6. If there is no cavity V0121 and no buffer space, the flow resistance increases, and the operating power consumption of the fresh air fan 6 will rise.

[0272] 2. Optimize the air flow distribution. Specifically, through the buffering and guiding of the negative pressure chamber, it is beneficial to guide the air flow to axially suck into the fresh air fan 6.

[0273] 3. Reduce the air flow impact and absorb noise.

[0274] In this way, while increasing the air intake volume of the fresh air module, it is beneficial to improve the overall air intake reliability and stability.

[0275] In some embodiments, a positioning boss 8221 is formed on the side of the fan cover 822 facing the indoor heat exchanger 2. The base 3 has an end plate 31 at one end adjacent to the fan cover 822. The end plate 31 is used to install the indoor heat exchanger 2 and the heat exchange fan 41; a positioning recess 311 is formed on the end plate 31. The positioning boss 8221 and the positioning recess 311 are inserted and matched with each other, so that the fan cover 822 and the base 3 at least partially overlap in the lateral direction.

[0276] On the one hand, the positioning boss 8221 and the positioning recess 311 are inserted and matched with each other to form the positioning of the two-way ventilation component. On the other hand, the overall lateral dimension can be reduced, so that the wall-mounted air conditioner 10000 will not be too long.

[0277] In some embodiments, an installation opening 803 is also defined between the fan cover 822 and the second volute half 821. The purification member 11 is detachably assembled in the fresh air chamber V012 through the installation opening 803. This facilitates the disassembly of the purification member 11 when the purification member 11 is damaged or saturated, facilitating maintenance or replacement.

[0278] Specifically, as Figure 19 shown, the installation opening 803 is formed between the fan cover 822 and the second volute half 821. The purification member 11 is detachably assembled in the fresh air chamber V012 through the installation opening 803. In this way, the size of the installation opening 803 can be set relatively large, facilitating the installation of a relatively large-sized purification member 11. When the size of the installation opening 803 is relatively large, the installation opening 803 is formed by the enclosure between the fan cover 822 and the second volute half 821. The fan cover 822 and the second volute half 821 respectively form open half-ports, which is convenient for processing or demolding, and the forming rejection rate is low.

[0279] In some embodiments, asFigure 19 As shown, a fresh air volute 8 is formed with a purified air inlet 804 for communicating with the interior of the room. When the fresh air fan 6 rotates, indoor air can enter the fresh air volute 8 from the purified air inlet 804 to be purified by the purification member 11, and the indoor air entering the fresh air volute 8 can enter the room from the fresh air outlet 802. In this way, indoor air can enter the fresh air duct V01 from the purified air inlet 804, be purified, and then enter the room from the fresh air outlet 802.

[0280] The wall-mounted air conditioner 10000 according to some embodiments of the present invention will be described below with reference to the accompanying drawings.

[0281] Referring to Figure 1 and Figure 2 , the wall-mounted air conditioner 10000 according to an embodiment of the present invention includes: a main body 1000.

[0282] The main body 1000 includes: a housing 1. An accommodation cavity V1 is formed inside the housing 1. A heat exchange air inlet 101 and a heat exchange air outlet 102 are formed on the housing 1. In the height direction of the main body 1000, the heat exchange air inlet 101 is located above the heat exchange air outlet 102.

[0283] Referring to Figure 3 and Figure 4 , the main body 1000 further includes: an indoor heat exchanger 2. The indoor heat exchanger 2 is disposed in the accommodation cavity V1.

[0284] Referring to Figure 3 and Figure 4 , the main body 1000 further includes: a base 3. The base 3 is disposed in the accommodation cavity V1, and a scroll tongue air duct V03 is formed thereon.

[0285] Referring to Figure 4 , the main body 1000 further includes: a heat exchange fan 41. The heat exchange fan 41 is disposed in the scroll tongue air duct V03 and is located on the side of the indoor heat exchanger 2 away from the heat exchange air inlet 101.

[0286] Referring to Figure 4 , the main body 1000 further includes: a first motor 42. The first motor 42 is disposed in the accommodation cavity V1 and is located at one end in the length direction of the main body 1000, and is used to drive the heat exchange fan 41 to rotate so that air can perform heat exchange between the interior of the air conditioner and the indoor space.

[0287] Referring to Figure 3 and Figure 4 , in the solution of the present application, the wall-mounted air conditioner further includes: a second motor 5. The second motor 5 is disposed in the accommodation cavity V1, and the second motor 5 is located at the other end in the length direction of the main body 1000.

[0288] The second motor 5 is an outer rotor motor, and the second motor 5 includes: a stator part 51 and a rotor part 52. The stator part 51 has coils wound thereon, and in the radial direction of the stator part 51, the rotor part 52 is arranged around the outside of the stator part 51.

[0289] The second motor 5 further includes a motor housing 531 and an output shaft 532. The motor housing 531 is fixedly connected to the rotor part 52, and the output shaft 532 is fixedly connected to the motor housing 531.

[0290] Referring to Figure 8 , the wall-mounted air conditioner further includes: a fresh air fan 6. The fresh air fan 6 is a centrifugal fan with axial air intake and radial air outlet. The fresh air fan 6 is located on the side of the heat exchange fan 41 away from the first motor 42. The fresh air fan 6 is located between the heat exchange fan 41 and the motor housing 531, and the fresh air fan 6 is connected to the output shaft 532 of the second motor 5.

[0291] Referring to Figures 5 - 8 , the wall-mounted air conditioner further includes: an exhaust fan 7. The exhaust fan 7 is a centrifugal fan with axial air intake and radial air outlet. In the length direction of the main body 1000, the exhaust fan 7 is located on the side of the fresh air fan 6 facing the second motor 5. The exhaust fan 7 is sleeved on the radial outside of the motor housing 531, and the exhaust fan 7 is fixedly connected to the motor housing 531. Wherein, the second motor 5 drives the fresh air fan 6 and the exhaust fan 7 to rotate synchronously in the working state.

[0292] Referring to Figures 5 - 8 , the wall-mounted air conditioner further includes: a fresh air volute 8. A fresh air duct V01 is formed inside the fresh air volute 8. The fresh air fan 6 is installed inside the fresh air volute 8. A fresh air inlet 801 and a fresh air outlet 802 are formed on the fresh air volute 8.

[0293] When the fresh air fan 6 rotates, it can make outdoor air enter the fresh air volute 8 from the fresh air inlet 801, and can make the outdoor air entering the fresh air volute 8 enter the room from the fresh air outlet 802.

[0294] Referring to Figures 5 - 8 , the wall-mounted air conditioner further includes: an exhaust volute 9. It is located on the side of the fresh air volute 8 facing the second motor 5. An exhaust duct V02 is formed inside the exhaust volute 9. The exhaust fan 7 is installed inside the exhaust volute 9. An exhaust inlet 901 and an exhaust outlet 902 are formed on the exhaust volute 9.

[0295] When the exhaust fan 7 rotates, it can make indoor air enter the exhaust volute 9 from the exhaust inlet 901, and can make the indoor air entering the exhaust volute 9 be discharged to the outside from the exhaust outlet 902.

[0296] 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.

[0297] Among them, referring to Figure 8 and Figure 9 , the first volute 81 includes a first volute end plate 811 and a first volute shroud 812. The first volute shroud 812 is formed by extending along the edge of the first volute end plate 811 towards the heat exchange fan 41. The first volute end plate 811 separates the fresh air duct V01 and the exhaust air duct V02.

[0298] Referring to Figure 10 and Figure 11 , the first volute end plate 811 includes an end plate body and a heat transfer part 816. The end plate body is provided with a through-hole 815. The heat transfer part 816 includes a heat transfer plate 8161. The heat transfer plate 8161 is located at the through-hole 815, and the heat transfer plate 8161 is connected to the end plate body. The heat transfer plate 8161 can be a metal plate or a graphite plate.

[0299] The second motor 5 drives the fresh air fan 6 and the exhaust air fan 7 to rotate synchronously in the working state. The rotation of the fresh air fan 6 can make outdoor air enter the fresh air volute 8 from the fresh air inlet 801, and can make the outdoor air entering the fresh air volute 8 enter the room from the fresh air outlet 802. The rotation of the exhaust air fan 7 can make indoor air enter the exhaust air volute 9 from the exhaust air inlet 901, and can make the indoor air entering the exhaust air volute 9 be discharged to the outdoor from the exhaust air outlet 902.

[0300] If there is a large temperature difference between the outdoor air and the indoor air, heat transfer is carried out between the exhaust air duct V02 and the fresh air duct V01 through the heat transfer plate 8161, so that the indoor air entering the exhaust air duct V02 from the exhaust air inlet 901 and the outdoor air entering the fresh air duct V01 from the fresh air inlet 801 both exchange heat with the heat transfer plate 8161, thereby changing the air temperature in the fresh air duct V01, so as to reduce the temperature difference between the fresh air entering the room through the fresh air outlet 802 and the indoor air, and avoid discomfort caused to people due to too large a temperature difference between the two parts of air.

[0301] In the above solution, by providing a heat transfer plate 8161 at the through-port 815 of the end plate body, on the one hand, it is possible to avoid increasing the overall thickness dimension of the first volute end plate 811. On the other hand, if there is a large temperature difference between the outdoor air and the indoor air, the outdoor air entering the fresh air duct V01 and the indoor air entering the exhaust air duct V02 can both come into direct contact with the heat transfer plate 8161, thereby improving the heat exchange efficiency between the outdoor air in the fresh air duct V01 and the indoor air entering the exhaust air duct V02, quickly changing the air temperature in the fresh air duct V01, reducing the temperature difference between the fresh air entering the room through the fresh air outlet 802 and the indoor air, avoiding discomfort caused to people by the too large temperature difference between the two parts of air, and being beneficial to enhancing the user experience.

[0302] Next, the wall-mounted air conditioner 10000 according to some other embodiments of the present invention will be described with reference to the accompanying drawings.

[0303] Referring to Figure 1 and Figure 2 , the wall-mounted air conditioner 10000 according to an embodiment of the present invention includes: a main body 1000.

[0304] The main body 1000 includes: a housing 1. An accommodation cavity V1 is formed inside the housing 1. A heat exchange air inlet 101 and a heat exchange air outlet 102 are formed on the housing 1. In the height direction of the main body 1000, the heat exchange air inlet 101 is located above the heat exchange air outlet 102.

[0305] Referring to Figure 3 and Figure 4 , the main body 1000 further includes: an indoor heat exchanger 2. The indoor heat exchanger 2 is disposed in the accommodation cavity V1.

[0306] Referring to Figure 3 and Figure 4 , the main body 1000 further includes: a base 3. The base 3 is disposed in the accommodation cavity V1, and a volute tongue air duct V03 is formed thereon.

[0307] Referring to Figure 4 , the main body 1000 further includes: a heat exchange fan 41. The heat exchange fan 41 is disposed in the volute tongue air duct V03 and is located on the side of the indoor heat exchanger 2 away from the heat exchange air inlet 101.

[0308] Referring to Figure 4 , the main body 1000 further includes: a first motor 42. The first motor 42 is disposed in the accommodation cavity V1 and is located at one end in the length direction of the main body 1000, and is used to drive the heat exchange fan 41 to rotate so that air can perform heat exchange between the interior of the air conditioner and the indoor space.

[0309] Referring to Figure 3 and Figure 4, the wall-mounted air conditioner 10000 further includes: a second motor 5, which is disposed in the accommodation cavity V1 and is located at the other end of the main body 1000 in the length direction.

[0310] The second motor 5 is an outer rotor motor, and the second motor 5 includes: a stator portion 51 and a rotor portion 52. The stator portion 51 has a wound coil, and in the radial direction of the stator portion 51, the rotor portion 52 is disposed around the outside of the stator portion 51.

[0311] The second motor 5 further includes a motor housing 531 and an output shaft 532. The motor housing 531 is fixedly connected to the rotor portion 52, and the output shaft 532 is fixedly connected to the motor housing 531.

[0312] Refer to Figure 8 , the wall-mounted air conditioner 10000 further includes: a fresh air fan 6. The fresh air fan 6 is a centrifugal fan with axial air inlet and radial air outlet. The fresh air fan 6 is located on the side of the heat exchange fan 41 away from the first motor 42. The fresh air fan 6 is located between the heat exchange fan 41 and the motor housing 531, and the fresh air fan 6 is connected to the output shaft 532 of the second motor 5.

[0313] Refer to Figures 5 - 8 , the wall-mounted air conditioner 10000 further includes: an exhaust fan 7. The exhaust fan 7 is a centrifugal fan with axial air inlet and radial air outlet. In the length direction of the main body 1000, the exhaust fan 7 is located on the side of the fresh air fan 6 facing the second motor 5. The exhaust fan 7 is sleeved on the radial outside of the motor housing 531, and the exhaust fan 7 is fixedly connected to the motor housing 531.

[0314] Wherein, in the working state, the second motor 5 drives the fresh air fan 6 and the exhaust fan 7 to rotate synchronously.

[0315] Refer to Figures 5 - 8 , the wall-mounted air conditioner 10000 further includes: a fresh air volute 8. A fresh air duct V01 is formed in the fresh air volute 8. The fresh air fan 6 is installed in the fresh air volute 8. A fresh air inlet 801 and a fresh air outlet 802 are formed on the fresh air volute 8.

[0316] When the fresh air fan 6 rotates, outdoor air can enter the fresh air volute 8 from the fresh air inlet 801, and the outdoor air entering the fresh air volute 8 can enter the room from the fresh air outlet 802.

[0317] Refer to Figures 5 - 8 , the wall-mounted air conditioner 10000 further includes: an exhaust volute 9. The exhaust volute 9 is located on the side of the fresh air volute 8 facing the second motor 5. An exhaust duct V02 is formed in the exhaust volute 9. The exhaust fan 7 is installed in the exhaust volute 9. An exhaust inlet 901 and an exhaust outlet 902 are formed on the exhaust volute 9.

[0318] 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 discharged to the outside through the exhaust air outlet 902.

[0319] 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.

[0320] Among them, referring to Figure 8 and Figure 9 、 Figure 12 The first volute 81 includes a first volute end plate 811 and a first volute shroud 812. The first volute shroud 812 extends along the edge of the first volute end plate 811 towards the heat exchange fan 41. The first volute end plate 811 separates the fresh air duct V01 and the exhaust air duct V02.

[0321] Referring to Figure 12 The first volute end plate 811 has a heat transfer portion 816. The heat transfer portion 816 includes a plurality of heat transfer through holes 8162. The plurality of heat transfer through holes 8162 communicate the fresh air duct V01 and the exhaust air duct V02.

[0322] When the second motor 5 is in the working state, it drives the fresh air fan 6 and the exhaust fan 7 to rotate synchronously. 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 enter the room through the fresh air outlet 802. 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 discharged to the outside through the exhaust air outlet 902.

[0323] If there is a large temperature difference between the outdoor air and the indoor air, the indoor air entering the exhaust air duct V02 from the exhaust air inlet 901 can enter the fresh air duct V01 through the plurality of heat transfer through holes 8162, and convect with the air in the fresh air duct V01, so that heat transfer is carried out between the exhaust air duct V02 and the fresh air duct V01 through the plurality of heat transfer through holes 8162, thereby changing the temperature of the air in the fresh air duct V01 to reduce the temperature difference between the fresh air entering the room through the fresh air outlet 802 and the indoor air, and avoiding discomfort caused by too large a temperature difference between the two parts of air to people.

[0324] In the above solution, by providing a plurality of heat transfer through holes 8162 in the first volute end plate 811, the fresh air duct V01 and the exhaust air duct V02 are directly communicated, so that the indoor air in the exhaust air duct V02 enters the fresh air duct V01 and convects with the air in the fresh air duct V01, thereby directly changing the air temperature in the fresh air duct V01, quickly changing the air temperature in the fresh air duct V01, reducing the temperature difference between the fresh air entering the room through the fresh air outlet 802 and the indoor air, avoiding discomfort caused by the too large temperature difference between the two parts of air to people, and being beneficial to improving the user experience.

[0325] In addition, setting the heat transfer through holes 8162 can, on the one hand, reduce the number of components of the first volute 81 and eliminate the installation and connection processes of each component of the first volute 81. On the other hand, the heat transfer through holes 8162 can be directly formed by drilling holes in the first volute end plate 811, which is convenient to operate and beneficial to improving production efficiency.

[0326] Please refer to again Figure 8 and Figure 9 , in some embodiments, the exhaust fan 7 includes an exhaust wheel disc 71 and exhaust blades 72. The exhaust blades 72 are located at the edge of the exhaust wheel disc 71, and the exhaust blades 72 extend along the axial direction of the exhaust wheel disc 71 in a direction away from the fresh air fan 6.

[0327] The exhaust fan 7 further includes a protrusion 74. The protrusion 74 is provided on the exhaust wheel disc 71. The center of the protrusion 74 can be located on the axis of the exhaust fan 7, and the protrusion 74 extends in a direction towards the fresh air fan 6 relative to the exhaust fan 7, so as to form a receiving groove V07 for the second motor 5 on the side of the protrusion 74 close to the second motor 5.

[0328] Among them, a recessed portion 813 is formed in the central partial area of the first volute end plate 811 and faces towards the inside of the fresh air fan 6. At least a part of the protrusion 74 is located in the recessed portion 813. Further, a perforated portion 814 is provided at the center of the bottom wall of the recessed portion 813. The output shaft 532 of the second motor 5 is connected to the fresh air fan 6 through the perforated portion 814.

[0329] A plurality of heat transfer through holes 8162 penetrate through the bottom wall of the recessed portion 813, and the plurality of heat transfer through holes 8162 are arranged around the perforated portion 814. If the ratio of the total area of the plurality of heat transfer through holes 8162 to the surface area of the bottom wall of the recessed portion 813 is too large, on the one hand, it will affect the structural strength of the first volute end plate 811, and on the other hand, it is easy for more air in the exhaust air duct V02 to enter the fresh air duct V01, resulting in a reduction in the exhaust air volume and a deterioration of the ventilation effect.

[0330] If the ratio of the total area of multiple heat transfer through-holes 8162 to the bottom wall surface area of the recess 813 is too small, it may cause the air in the exhaust air duct V02 to not flow smoothly enough during the process of entering the fresh air duct V01, resulting in the amount of air entering the fresh air duct V01 through the multiple heat transfer through-holes 8162 being insufficient to change the air temperature in the fresh air duct V01 and unable to meet the temperature adjustment requirement, thus causing discomfort.

[0331] Therefore, in the solution of the present application, the ratio of the total area of multiple heat transfer through-holes 8162 to the bottom wall surface area of the recess 813 is 0.15 - 0.85. For example, the ratio of the total area of multiple heat transfer through-holes 8162 to the bottom wall surface area of the recess 813 can be 0.15, 0.3, 0.6, 0.85, etc. On the basis of ensuring the structural strength of the first volute end plate 811, it can not only ensure the exhaust air volume of the exhaust air duct V02, but also ensure that the air volume introduced from the exhaust air duct V02 into the fresh air duct V01 can meet the temperature adjustment requirement, so as to improve the user experience.

[0332] Furthermore, the ratio of the total area of multiple heat transfer through-holes 8162 to the bottom wall surface area of the recess 813 is 0.35 - 0.65.

[0333] If the ratio of the total area of multiple heat transfer through-holes 8162 to the bottom wall surface area of the recess 813 is 0.35, it is sufficient to ensure the structural strength of the first volute end plate 811, and it can also make the exhaust air volume of the exhaust air duct V02 meet the ventilation volume requirement of the user.

[0334] If the ratio of the total area of multiple heat transfer through-holes 8162 to the bottom wall surface area of the recess 813 is 0.65, the amount of air entering the fresh air duct V01 through the multiple heat transfer through-holes 8162 is sufficient to significantly change the air temperature in the fresh air duct V01.

[0335] Therefore, by restricting the ratio of the total area of multiple heat transfer through-holes 8162 to the bottom wall surface area of the recess 813 to meet the above range, it can not only meet the ventilation requirement, but also significantly reduce the temperature difference between the air introduced from the fresh air duct V01 into the room and the original indoor air, thus avoiding causing discomfort to the user.

[0336] In some embodiments, please refer to again Figure 8 and Figure 9 , the fresh air fan 6 includes a fresh air wheel disc 61, the fresh air wheel disc 61 is coaxially arranged with the second motor 5 and is connected to the output shaft 532 of the second motor 5.

[0337] The fresh air fan 6 further includes a first fresh air blade 621, and the first fresh air blade 621 extends from the fresh air wheel disc 61 in a direction away from the exhaust air fan 7.

[0338] The fresh air fan 6 further includes second fresh air blades 622 which extend from the fresh air wheel disc 61 towards the direction close to the exhaust fan 7. The number of the second fresh air blades 622 is multiple, and the multiple second fresh air blades 622 are arranged around the heat transfer part 816. That is to say, the second fresh air blades 622 are arranged at the position of the fresh air wheel disc 61 axially facing the concave part 813, so that the second fresh air blades 622 and the multiple heat transfer holes are arranged axially opposite to each other.

[0339] Since the fresh air fan 6 has axial air intake and radial air outlet, when the fresh air fan 6 rotates, driven by the second fresh air blades 622, the air in the exhaust air duct V02 can enter the fresh air duct V01 axially through the multiple heat transfer holes, and convect and mix with the air in the fresh air duct V01, so as to change the temperature of the air in the fresh air duct V01, reduce the temperature difference between the air discharged from the fresh air outlet 802 and the indoor air, and improve the user experience.

[0340] In the description of this specification, the descriptions with reference to the terms "embodiment", "example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0341] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A wall-mounted air conditioner, comprising: A subject, the subject comprising: A casing, wherein a receiving cavity is formed inside the casing, a heat exchange air inlet and a heat exchange air outlet are formed on the casing, and in the height direction of the main body, the heat exchange air inlet is located above the heat exchange air outlet; An indoor heat exchanger is arranged in the accommodating cavity; A base, disposed in the accommodating cavity, and having a snail-tongue air duct formed thereon; A heat exchange fan is arranged in the volute-tongue air duct and is located on a side of the indoor heat exchanger away from the heat exchange air inlet; A first motor is disposed in the accommodating cavity and located at one end of the main body in the length direction, and is used to drive the heat exchange fan to rotate so that the air inside the air conditioner performs heat exchange with the indoor space; It is characterized by further comprising: A second motor is disposed in the accommodating cavity, and the second motor is located at the other end of the main body in the length direction; A fresh air fan, which is a centrifugal fan with axial air intake and radial air discharge, and is located on a side of the heat exchange fan away from the first motor, and is located between the heat exchange fan and a motor housing of the second motor; An exhaust fan, wherein the exhaust fan is a centrifugal fan with axial air intake and radial air discharge, and in the length direction of the main body, the exhaust fan is located on a side of the fresh air fan facing the second motor, and the exhaust fan is sleeved on the radial outer side of the motor housing of the second motor; Wherein, the second motor drives the fresh air fan and the exhaust fan to rotate synchronously in a working state; A fresh air volute, a fresh air duct is formed in the fresh air volute, the fresh air fan is installed in the fresh air volute, and a fresh air inlet and a fresh air outlet are formed on the fresh air volute; The rotation of the fresh air fan can allow outdoor air to enter the fresh air volute from the fresh air inlet, and can allow outdoor air entering the fresh air volute to enter the room from the fresh air outlet; An exhaust volute is located on a side of the fresh air volute facing the second motor, an exhaust air duct is formed in the exhaust volute, the exhaust fan is installed in the exhaust volute, and an exhaust air inlet and an exhaust air outlet are formed on the exhaust volute; The exhaust fan rotates to allow indoor air to enter the exhaust volute from the exhaust air inlet, and to allow indoor air entering the exhaust volute to be discharged to the outdoors from the exhaust air outlet; Wherein, a heat transfer portion is provided on the wall separating the fresh air duct and the exhaust air duct in the fresh air volute and the exhaust air volute, so that heat is transferred between the exhaust air duct and the fresh air duct through the heat transfer portion.

2. The wall-mounted air conditioner according to claim 1, characterized in that: The fresh air volute comprises: a first volute, the first volute being located on a side of the exhaust volute facing the heat exchange fan, and the first volute being detachably connected to the exhaust volute; The second volute is located on a side of the first volute facing the heat exchange fan, and the second volute is detachably connected to the first volute, and the first volute is located between the exhaust volute and the second volute.

3. The wall-mounted air conditioner according to claim 2, characterized in that: The first volute comprises a first volute end plate and a first volute enclosure plate, wherein the first volute enclosure plate is formed by extending along the edge of the first volute end plate toward the direction of the heat exchange fan; Wherein, the first volute end plate separates the fresh air duct from the exhaust air duct, and the first volute end plate includes an end plate body and the heat transfer part, the end plate body is provided with a through opening, the heat transfer part is located at the through opening and connected to the end plate body.

4. The wall-mounted air conditioner according to claim 3, characterized in that: The heat transfer part is a heat transfer plate.

5. The wall-mounted air conditioner according to claim 4, characterized in that: A through hole is provided at the center of the heat transfer plate, and the output shaft of the second motor is connected to the fresh air fan through the through hole.

6. The wall-mounted air conditioner according to claim 4, characterized in that: The heat transfer plate is a metal plate or a graphite plate.

7. The wall-mounted air conditioner according to claim 2, characterized in that: The exhaust fan comprises an exhaust wheel disc and exhaust blades, wherein the exhaust blades are located at the edge of the exhaust wheel disc and extend along the axial direction of the exhaust wheel disc in a direction away from the fresh air fan; The exhaust fan also includes a protrusion, which is arranged on the exhaust wheel disc and extends in a direction relative to the exhaust fan toward the fresh air fan, so that a side of the protrusion close to the second motor forms a receiving groove for the second motor.

8. The wall-mounted air conditioner according to claim 7, characterized in that: A central portion of the first volute end plate forms a recessed portion facing the fresh air fan, and at least a portion of the raised portion is located in the recessed portion.

9. The wall-mounted air conditioner according to any one of claims 1 to 8, characterized in that: The second motor is an outer rotor motor, and the second motor includes: A stator part, wherein a coil is wound on the stator part; a rotor portion, which is arranged around the outer side of the stator portion in the radial direction of the stator portion; A motor housing, wherein the motor housing is fixedly connected to the rotor portion; An output shaft, the output shaft is fixedly connected to the motor housing; Wherein, the fresh air fan is located between the heat exchange fan and the motor housing, and the fresh air fan is connected to the output shaft of the second motor, and the exhaust fan is fixedly connected to the motor housing.

10. The wall-mounted air conditioner according to claim 9, characterized in that: The exhaust fan forms a receiving groove at the center in the radial direction, and at least a portion of the stator part of the second motor, at least a portion of the rotor part, and at least a portion of the motor housing are accommodated in the receiving groove.

11. The wall-mounted air conditioner according to claim 9, characterized in that: The exhaust volute includes an air guide ring, which is in a circular tube shape and has a diameter that gradually decreases in a direction toward the heat exchange fan. The area surrounded by the air guide ring forms the exhaust air inlet.

12. The wall-mounted air conditioner according to claim 11, characterized in that: The exhaust fan comprises: an exhaust wheel disc and exhaust blades, the exhaust wheel disc is connected to the motor housing of the second motor, the exhaust blades are connected to a side of the exhaust wheel disc away from the heat exchange fan, and the exhaust blades are multiple and arranged in a circumferential direction; The edge of the exhaust blade away from the exhaust wheel disc is a blade side edge, the distance between the portion of the blade side edge close to the second motor and the exhaust wheel disc is reduced, and all the exhaust blades form side edge depressions at the portion where the distance between the blade side edges is reduced; The end of the air guide ring is located in the side edge recess.

13. The wall-mounted air conditioner according to claim 9, characterized in that: The fresh air fan comprises a fresh air disc and fresh air blades, wherein the fresh air blades are located at the outer edge of the fresh air disc and extend along the axial direction of the fresh air disc, and the total thickness of the fresh air disc and the fresh air blades in the axial direction is h1; The total thickness of the stator part, the rotor part and the motor housing in the axial direction is h3. Among them, h1>h3.

14. The wall-mounted air conditioner according to claim 9, characterized in that: The exhaust fan comprises an exhaust wheel disc and exhaust blades, wherein the exhaust blades are located at the edge of the exhaust wheel disc and extend along the axial direction of the exhaust wheel disc in a direction away from the fresh air fan, and the total thickness of the exhaust wheel disc and the exhaust blades in the axial direction is h2; The total thickness of the stator part, the rotor part and the motor housing in the axial direction is h3; Among them, h3>h2.

15. The wall-mounted air conditioner according to any one of claims 1 to 8, characterized in that: The fresh air fan comprises a fresh air disc and fresh air blades, wherein the fresh air blades are located at the outer edge of the fresh air disc and extend along the axial direction of the fresh air disc, and the total thickness of the fresh air disc and the fresh air blades in the axial direction is h1; The exhaust fan comprises an exhaust wheel disc and exhaust blades, wherein the exhaust blades are located at the edge of the exhaust wheel disc and extend along the axial direction of the exhaust wheel disc in a direction away from the fresh air fan, and the total thickness of the exhaust wheel disc and the exhaust blades in the axial direction is h2; Among them, h1 <h2。 16. The wall-mounted air conditioner according to any one of claims 1 to 8, characterized in that: The area of ​​the outer circular curved surface of the fresh air fan is S1, and the area of ​​the outer circular curved surface of the exhaust fan is S2. S1=ΠD1*h1, D1 is the outer diameter of the fresh air fan, and h1 is the total thickness of the fresh air impeller and fresh air blades of the fresh air fan in the axial direction; S2=ΠD2*h2, D2 is the outer diameter of the exhaust fan, h2 is the total thickness of the exhaust wheel and exhaust blades of the exhaust fan in the axial direction; Satisfies, S1>S2.

17. The wall-mounted air conditioner according to claim 9, characterized in that: The fresh air fan comprises: A fresh air wheel, the fresh air wheel is coaxially arranged with the second motor and connected to the output shaft of the second motor; The fresh air blades include a first fresh air blade, and the first fresh air blade is extended from the fresh air wheel toward a direction away from the exhaust fan.

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

19. The wall-mounted air conditioner according to claim 18, characterized in that: In the axial direction of the fresh air fan, the length of the second fresh air blade is smaller than the length of the first fresh air blade.

20. The wall-mounted air conditioner according to claim 18, characterized in that: A wheel hole is formed on the fresh air wheel, and a distance from the wheel hole to the center of the fresh air wheel is smaller than a distance from the fresh air blade to the center of the fresh air wheel.

21. The wall-mounted air conditioner according to any one of claims 2 to 8, characterized in that: The second volute comprises: A second volute half, the second volute half is located on the side of the first volute facing the heat exchange fan, and is detachably connected to the first volute, an axial vent is provided at the center of the radial direction of the second volute half, a volute cavity is formed between the second volute half and the first volute, the fresh air fan is located in the volute cavity, the axial air inlet end of the fresh air fan is arranged toward the axial vent, and the second volute half and the first volute surround the fresh air outlet.

22. The wall-mounted air conditioner according to claim 21, characterized in that: The second volute comprises: A fan cover is located on the side of the second volute half facing the heat exchange fan and is detachably connected to the second volute half. The cavity enclosed by the fan cover and the second volute half is a fresh air cavity. The fan cover and the second volute half enclose the fresh air inlet.

23. The wall-mounted air conditioner according to claim 22, characterized in that: Also includes: A purification component, the purification component is installed in the fresh air cavity, the purification component is connected to the second volute, the fresh air fan rotates to allow outdoor air to enter the fresh air volute from the fresh air inlet, and the outdoor air entering the fresh air volute is blown through the purification component and then enters the room from the fresh air outlet; The purification component comprises a filter screen, and the filter screen is covered on the axial ventilation opening.

24. The wall-mounted air conditioner according to claim 23, characterized in that: A portion of the fresh air cavity constitutes an empty cavity, the cavity is located on a side of the purification component away from the fresh air fan, and the fresh air inlet is connected to the cavity.

25. The wall-mounted air conditioner according to claim 23, characterized in that: An installation opening is also formed between the fan cover and the second volute half, and the purification component can be detachably assembled in the fresh air cavity through the installation opening.

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

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

28. The wall-mounted air conditioner according to claim 27, characterized in that: The exhaust fan comprises an exhaust wheel disc and exhaust blades, wherein the exhaust blades are located at the edge of the exhaust wheel disc and extend along the axial direction of the exhaust wheel disc in a direction away from the fresh air fan; The exhaust fan also includes a protrusion, which is arranged on the exhaust wheel disc and extends in a direction relative to the exhaust fan toward the fresh air fan, so that a side of the protrusion close to the second motor forms a receiving groove for the second motor.

29. The wall-mounted air conditioner according to claim 28, characterized in that: A central portion of the first volute end plate forms a recessed portion facing the fresh air fan, and at least a portion of the raised portion is located in the recessed portion.

30. The wall-mounted air conditioner according to claim 29, characterized in that: A perforated portion is provided at the center of the bottom wall of the recessed portion, and the output shaft of the second motor is connected to the fresh air fan through the perforated portion.

31. The wall-mounted air conditioner according to claim 30, characterized in that: The plurality of heat transfer through holes penetrate the bottom wall of the recessed portion and are arranged around the perforated portion, and the ratio of the total area of ​​the plurality of heat transfer through holes to the surface area of ​​the bottom wall of the recessed portion is 0.15-0.

85.

32. The wall-mounted air conditioner according to claim 27, characterized in that: The fresh air fan comprises: A fresh air wheel, the fresh air wheel is coaxially arranged with the second motor and connected to the output shaft of the second motor; a first fresh air blade, the first fresh air blade extending from the fresh air wheel toward a direction away from the exhaust fan; The second fresh air blades extend from the fresh air wheel toward the exhaust fan. There are multiple second fresh air blades, and the multiple second fresh air blades are arranged around the heat transfer part.

Images