WO2025043972A1 - Air conditioner - Google Patents

Abstract

An air conditioner. A housing (100) of the air conditioner comprises a first inner cavity (104), a second inner cavity (106), a first air inlet (101), a first air outlet (102), and a second air outlet (103). A fresh air volute (700) is provided in the second inner cavity (106) and comprises a second air inlet (710) and a third air outlet (720). A drive motor (500) is provided in the housing (100), the drive motor (500) comprises a first motor shaft (501) and a second motor shaft (502), and the first motor shaft (501) is connected to a heat exchange fan (400). The heat exchange fan (400) comprises a support shaft (140), and the support shaft (140) is arranged on the body of the heat exchange fan (400). A shaft hole (210) is provided on the side wall of the fresh air volute (700) facing the drive motor (500), and the shaft hole (210) is communicated with the interior of the fresh air volute (700). An electric control box (600) is provided on the side of the fresh air volute (700) distant from the drive motor (500) along the length direction of the housing (100).

Description

Air Conditioner

This application claims the priority of application number CN202311277798.X, filed on September 28, 2023; and the priority of application number CN202322662272.5, filed on September 28, 2023; and the priority of application number CN202322369024.1, filed on August 31, 2023; and the priority of application number CN202322368690.3, filed on August 31, 2023; and the priority of application number CN202322359656.X, filed on August 31, 2023; and the priority of Chinese patent application with application number 202323308928.X, filed on December 5, 2023, the entire contents of which are incorporated by reference into this application.

Technical Field

The present disclosure relates to the technical field of air conditioning, and in particular to an air conditioner.

Background Art

In some indoor units of wall-mounted air conditioners, the fresh air fan and the heat exchange fan are designed to be driven by the same drive motor. The drive motor can be a single-axis motor, the motor shaft of the drive motor is connected to the heat exchange fan, and the heat exchange fan is connected to the fresh air fan through a connecting shaft. The drive motor drives the fresh air fan to rotate through the heat exchange fan, so that the fresh air fan and the heat exchange fan rotate synchronously. The drive motor can also be a dual-axis motor, one motor shaft of the drive motor is connected to the heat exchange fan, and the other motor shaft of the drive motor is connected to the fresh air fan, so that the drive motor drives the fresh air fan and the heat exchange fan to rotate. The connection harness between the drive motor and the circuit board is long, and the wiring path is cumbersome. In the production and assembly process, there are uncontrollable factors such as extrusion and stress harness, which increases the risk of wiring failure, reduces the reliability of the drive motor, and reduces product quality.

Summary of the invention

An air conditioner is provided, comprising a housing, an indoor heat exchanger, a fresh air volute, a fresh air fan, a driving motor, a heat exchange fan, an axial hole, an electric control box and a circuit board. The housing comprises a first inner cavity, a second inner cavity, a first air inlet, a first air outlet and a second air outlet. The first inner cavity and the second inner cavity are arranged along the length direction of the housing. The first air inlet is arranged at the top of the housing. The first air outlet is arranged at the front bottom of the housing. The second air outlet is arranged at the top of the housing. The indoor heat exchanger is arranged in the first inner cavity, and the indoor heat exchanger is configured to heat the air passing through the indoor heat exchanger to form a heat exchange airflow. The heat exchange fan is arranged in the first inner cavity, and the heat exchange fan is arranged below the indoor heat exchanger; the indoor airflow enters the housing through the first air inlet under the action of the heat exchange fan, and is output to the room through the first air outlet after being heat exchanged by the indoor heat exchanger; the fresh air volute is arranged in the second inner cavity, and the fresh air volute comprises a second air inlet and a third air outlet. The fresh air fan is arranged in the fresh air volute; through the operation of the fresh air fan, the outdoor fresh air flows from the first air inlet through the inside of the fresh air volute and then flows into the room from the third air outlet. The drive motor is arranged in the shell and between the fresh air volute and the heat exchange fan; the drive motor drives the heat exchange fan and the fresh air fan to operate synchronously; the drive motor includes a first motor shaft and a second motor shaft, the first motor shaft and the second motor shaft are arranged coaxially; the first motor shaft is connected to the heat exchange fan. The heat exchange fan includes a support shaft, the support shaft is arranged in the body of the heat exchange fan, and the support shaft is connected with a bearing component to support the rotation of the heat exchange fan. The shaft hole is arranged on the side wall of the fresh air volute facing the drive motor, and the shaft hole is connected to the inside of the fresh air volute; the second motor shaft passes through the shaft hole and is connected to the heat exchange fan. The electric control box is arranged on the side of the fresh air volute away from the drive motor along the length direction of the shell. The circuit board is arranged in the electric control box, and the circuit board is coupled to the drive motor through a line.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an embodiment of a wall-mounted air conditioner disclosed herein;

FIG2 is a schematic diagram of a structure in which a fresh air module, an indoor heat exchanger, a heat exchange fan and a drive motor are assembled inside a housing in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG3 is a schematic diagram of a structure in which a fresh air module, a heat exchange fan, a drive motor and an electric control box are assembled inside a housing in one embodiment of a wall-mounted air conditioner disclosed herein;

FIG4 is a schematic diagram of a structure in which a fresh air module, a heat exchange fan and a drive motor are assembled inside a housing in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG5 is an enlarged view of circle A in FIG4 ;

FIG6 is a schematic diagram of the structure in which a fresh air module and an electric control box are assembled inside a housing in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG7 is a schematic diagram of the structure of the protective cover and the housing assembly in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG8 is a schematic structural diagram of the assembly of a drive motor and a housing in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG9 is an enlarged view of circle B in FIG8 ;

FIG10 is an enlarged view of circle C in FIG8 ;

FIG11 is a schematic diagram of a structure in which a fresh air fan and a heat exchange fan are connected in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG12 is another structural schematic diagram of a fresh air fan and a heat exchange fan connected in one embodiment of the wall-mounted air conditioner disclosed herein;

Fig. 13 is a cross-sectional view taken along the line A-A in Fig. 12;

FIG14 is an enlarged view of circle D in FIG13 ;

FIG15 is an enlarged view of circle E in FIG13 ;

FIG16 is a schematic diagram of the structure of a driving motor in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG17 is a structural diagram of the arrangement positions of the fresh air module and the electric control box in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG18 is a schematic structural diagram of a fresh air volute in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG19 is an exploded view of a fresh air module in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG20 is a schematic structural diagram of the assembly of the fresh air volute and the fresh air duct in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG21 is a schematic diagram of the structure of an electric control box in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG22 is another structural schematic diagram of an embodiment of the wall-mounted air conditioner disclosed herein;

FIG23 is a schematic diagram of a structure in which a fresh air module, an indoor heat exchanger, a heat exchange fan and a drive motor are assembled inside a housing in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG24 is another structural schematic diagram of a fresh air module, a heat exchange fan and a drive motor assembled inside a housing in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG25 is another structural schematic diagram of a fresh air fan and a heat exchange fan connected in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG26 is an enlarged view of circle F in FIG25 ;

FIG27 is a schematic diagram of a structure of a housing in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG28 is a cross-sectional view of an embodiment of the wall-mounted air conditioner disclosed herein;

FIG29 is a schematic diagram of the structure of a first air guide plate and a second air guide plate assembled on a housing in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG30 is a schematic diagram of another structure of a fresh air volute in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG31 is another exploded view of a fresh air module in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG32 is a schematic diagram of another structure of a fresh air volute in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG33 is a schematic diagram of the structure of a second switch assembly in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG34 is a flowchart of a process of starting fresh air separately in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG35 is a flowchart of a process of turning off the fresh air after the fresh air function is turned on separately in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG36 is a flowchart of a process of starting fresh air separately after assembling a temperature sensor in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG37 is a timing diagram of the operation of the first air guide plate, the second air guide plate, the first switch assembly, the second switch assembly, the drive motor and the temperature sensor in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG38 is another structural schematic diagram of an embodiment of the wall-mounted air conditioner disclosed herein;

FIG39 is a schematic diagram of a structure in which a fresh air module, an indoor heat exchanger, a heat exchange fan and a drive motor are assembled inside a housing in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG40 is another structural schematic diagram of a fresh air module, a heat exchange fan and a drive motor assembled inside a housing in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG41 is a schematic structural diagram of another housing in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG42 is another structural schematic diagram of a fresh air fan and a heat exchange fan connected in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG43 is an enlarged view of circle G in FIG42;

FIG44 is a schematic diagram of another structure of a fresh air volute in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG45 is a schematic diagram of another structure of a fresh air volute in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG46 is another exploded view of a fresh air module in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG47 is a schematic diagram of the structure of an embodiment of a wall-mounted air conditioner disclosed herein when an online pipe, a fresh air pipe and a drain pipe pass through a reserved space;

FIG48 is a schematic diagram of a structure in which a fresh air volute is assembled to a housing in one embodiment of a wall-mounted air conditioner of the present disclosure;

FIG49 is another structural schematic diagram of a fresh air volute when assembled to a housing in one embodiment of the wall-mounted air conditioner of the present disclosure;

FIG50 is another structural schematic diagram of a fresh air volute when being assembled to a housing in one embodiment of a wall-mounted air conditioner of the present disclosure;

FIG51 is a schematic structural diagram of the assembly of a bearing component and a bearing seat in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG52 is another structural schematic diagram of an embodiment of the wall-mounted air conditioner disclosed herein;

FIG53 is a schematic diagram of a structure in which a fresh air module, an indoor heat exchanger, a heat exchange fan and a drive motor are assembled inside a housing in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG54 is another structural schematic diagram of a fresh air module, a heat exchange fan and a drive motor assembled inside a housing in one embodiment of the wall-mounted air conditioner disclosed herein;

Fig. 55 is an enlarged view of circle H in Fig. 54;

FIG56 is a schematic diagram of another structure of a housing in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG57 is a schematic diagram of another structure of a fresh air volute in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG58 is a schematic diagram of another structure of a fresh air volute in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG59 is another exploded view of a fresh air module in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG60 is a schematic diagram of the structure of a fresh air fan in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG61 is another structural schematic diagram of a fresh air fan and a heat exchange fan connected in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG62 is an enlarged view of circle I in FIG61;

Fig. 63 is a cross-sectional view taken along the Q-Q direction in Fig. 61;

FIG64 is a schematic diagram of the structure of a heat exchange fan in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG65 is a schematic diagram of the structure of a connecting member in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG66 is a schematic diagram of the structure inside the fresh air module in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG67 is a schematic structural diagram of the second half shell and the first support portion when assembled in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG68 is a cross-sectional view of the second half shell and the first support portion when assembled in one embodiment of the wall-mounted air conditioner of the present disclosure;

FIG69 is an enlarged view of a portion of circle J in FIG68 ;

FIG70 is a schematic diagram of the structure of the second half shell in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG71 is a schematic structural diagram of a first supporting portion in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG. 72 is another structural schematic diagram of an embodiment of the wall-mounted air conditioner disclosed herein;

FIG73 is a schematic diagram of a structure in which a fresh air module, an indoor heat exchanger, a heat exchange fan and a drive motor are assembled inside a housing in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG74 is a schematic diagram of the structure in which a fresh air module, a heat exchange fan and a bearing component are assembled inside a housing in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG75 is a schematic diagram of the structure in which a fresh air module and a heat exchange fan are assembled inside a housing in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG. 76 is a schematic diagram of another structure of a housing in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG. 77 is another structural schematic diagram of a fresh air fan and a heat exchange fan connected in one embodiment of the wall-mounted air conditioner disclosed herein;

Fig. 78 is an enlarged view of circle K in Fig. 77;

FIG79 is a schematic structural diagram of a fresh air volute, a fresh air fan and a heat exchange fan when assembled in one embodiment of a wall-mounted air conditioner disclosed herein;

Fig. 80 is an enlarged view of circle L in Fig. 79;

FIG81 is a schematic diagram of another structure of a fresh air volute in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG82 is a schematic diagram of another structure of a fresh air volute in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG83 is another exploded view of a fresh air module in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG84 is a schematic diagram of the structure of the first split shell in one embodiment of the wall-mounted air conditioner disclosed herein;

FIG85 is a cross-sectional view of a fresh air volute, a fresh air fan and a heat exchange fan when assembled in one embodiment of a wall-mounted air conditioner disclosed herein;

Figure 86 is a schematic diagram of the structure of the bearing component in one embodiment of the wall-mounted air conditioner disclosed herein.

DETAILED DESCRIPTION

Some embodiments of the present disclosure will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments provided by the present disclosure are within the scope of protection of the present disclosure.

Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and other forms such as the third person singular form "comprises" and the present participle form "comprising" are to be interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms is not necessarily In addition, the specific features, structures, materials or characteristics described may be included in any one or more embodiments or examples in any appropriate manner.

In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

When describing some embodiments, the expressions "coupled" and "connected" and their derivatives may be used. The term "connected" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. The term "coupled" indicates, for example, that two or more components are in direct physical or electrical contact. The term "coupled" or "communicatively coupled" may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents of this document.

“A and/or B” includes the following three combinations: A only, B only, and a combination of A and B.

The use of "adapted to" or "configured to" herein is meant to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

Additionally, the use of “based on” is meant to be open and inclusive, as a process, step, calculation, or other action “based on” one or more stated conditions or values may, in practice, be based on additional conditions or values beyond those stated.

In the present disclosure, the wall-mounted air conditioner performs a refrigeration cycle of the wall-mounted air conditioner by using a compressor, a condenser, an expansion valve and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, throttling and evaporation, and supplies cold or heat to the air that has been conditioned and heat exchanged. The compressor compresses the refrigerant gas in a low-temperature and low-pressure state and discharges the refrigerant gas in a high-temperature and high-pressure state. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process. The expansion valve throttles the liquid phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure gas-liquid two-phase refrigerant.

In the evaporator, the refrigerant expanded in the expansion valve absorbs heat and evaporates, and is in a low temperature and low pressure state. Then the refrigerant gas returns to the compressor. The evaporator can achieve a refrigeration effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled.

The air conditioner includes an indoor unit and an outdoor unit, and the indoor unit includes a housing. In the whole cycle, the indoor unit of the air conditioner can adjust the temperature of the indoor space. The outdoor unit of the wall-mounted air conditioner refers to the part of the refrigeration cycle including the compressor and the outdoor heat exchanger, and the indoor unit of the wall-mounted air conditioner includes an indoor heat exchanger, and the expansion valve can be provided in the indoor unit or the outdoor unit. The indoor heat exchanger and the outdoor heat exchanger can be used as a condenser or an evaporator, respectively. When the indoor heat exchanger is used as a condenser, the indoor unit of the air conditioner is used as a heater in the heating mode, and when the indoor heat exchanger is used as an evaporator, the indoor unit of the air conditioner is used as a cooler in the cooling mode.

The wall-mounted air conditioner provided in the embodiments of the present disclosure may have various implementation forms.

Figures 1 to 21 are an implementation of a wall-mounted air conditioner disclosed herein. The wall-mounted air conditioner in some embodiments of the present disclosure includes a housing 100, an indoor heat exchanger 200, a fresh air module, a heat exchange fan 400, a drive motor 500 and an electric control box 600.

As shown in Figure 1, the shell 100 is configured to form the overall appearance of the air-conditioning indoor unit. The shell 100 includes a top and a bottom. The top of the shell 100 and the bottom of the shell 100 are opposite ends, and the height direction of the shell 100 is from the top of the shell 100 to the bottom of the shell 100; the left side of the shell 100 and the right side of the shell 100 are opposite sides, and the length direction of the shell 100 is from the left side of the shell 100 to the right side of the shell 100; the front side of the shell 100 and the back side of the shell 100 are opposite sides, and the direction from the front side of the shell 100 to the back side of the shell 100 is the thickness direction of the shell 100; wherein, the shell 100 is set on the top of the room or the upper space of the room, the front side of the shell 100 is set toward the user, and the back side of the shell 100 is set toward the wall.

A heat exchange air duct is defined inside the housing 100. The housing 100 is formed with a first air inlet 101 and a first air outlet 102. The first air inlet 101 and the first air outlet 102 are respectively connected to the heat exchange air duct. The first air inlet 101 is located at the top of the housing 100, and the first air outlet 102 is opened at the front side of the housing 100 and arranged near the bottom of the housing 100, that is, the first air outlet 102 is located at the front lower side of the housing 100. A first grille is provided at the first air inlet 101 to prevent debris from entering the interior of the housing 100; the first air outlet 102 is located at the front lower side of the housing 100, and a wind guide plate 220 is provided at the first air outlet 102. The wind guide plate 220 is connected to the housing 100 in an openable and closable manner to open or close the first air outlet 102.

As shown in FIG2 , the indoor heat exchanger 200 is installed in the housing 100 and is located in the heat exchange air duct, and is configured to heat the indoor air in the heat exchange air duct to form air-conditioning air to meet the cooling or heating needs of the user; it should be noted that the indoor heat exchanger 200 is arranged close to the first air inlet 101. It should also be noted that the air-conditioning air can be cold air, hot air, or even normal temperature air.

As shown in Fig. 3 and Fig. 4, the heat exchange fan 400 is installed in the housing 100 and is located in the heat exchange air duct, and the heat exchange fan 400 is located below the indoor heat exchanger 200. The heat exchange fan 400 is configured to blow the indoor air flow into the housing 100 through the first air inlet 101. The axial direction of the heat exchange fan 400 extends along the length direction of the housing 100. The heat exchange fan 400 is operated to introduce indoor air into the heat exchange air duct, passing through the indoor After the heat exchanger 200 exchanges heat to form conditioned air, the conditioned air is directed indoors through the first air outlet 102. It should be noted that the heat exchange fan 400 is a cross-flow fan, and the rotation axis of the heat exchange fan 400 is arranged along the length direction of the housing 100.

As shown in Fig. 7, the housing 100 includes a first partition portion 108 and a second partition portion 109, which are disposed inside the housing 100 and are correspondingly disposed along the length direction of the housing 100, and the first partition portion 108 and the second partition portion 109 jointly define a first inner cavity 104. The first partition portion 108 and the second partition portion 109 can also be used to axially limit the heat exchange fan 400 to prevent the heat exchange fan 400 from moving along the length direction of the housing 100, thereby increasing the reliability of the installation of the heat exchange fan 400.

As shown in Figures 3 and 17-20, the fresh air module is configured to introduce outdoor fresh air into the room; the fresh air module includes a fresh air volute 700 and a fresh air fan 300, the fresh air volute 700 and the heat exchange fan 400 are distributed along the length direction of the shell 100, and a fresh air duct is defined in the fresh air volute 700, and the fresh air fan 300 is installed in the fresh air duct.

It should be noted that the housing 100 further includes a second air outlet 103, which is disposed at the top of the housing 100. The fresh air duct is provided with a second air inlet 710 and a third air outlet 720, the second air inlet 710 is connected to the outside, and the second air outlet 103 is connected to the third air outlet 720, so that the outdoor fresh air flows into the room from the second air outlet 103. Through the operation of the fresh air fan 300, the outdoor fresh air is introduced into the fresh air duct from the second air inlet 710, passes through the third air outlet 720, and flows into the room from the second air outlet 103.

In some embodiments, as shown in FIG. 20 , the fresh air volute 700 is also connected to a fresh air duct 900 , which is disposed at the second air inlet 710 , and is connected to the fresh air duct to introduce outdoor fresh air into the fresh air duct from the second air inlet 710 through the fresh air duct 900 .

A filter assembly 800 is provided in the fresh air duct to purify the outdoor fresh air flowing into the room. The filter assembly 800 includes a purification frame and a filter, the filter is arranged on the purification frame, and the filter is configured to filter and purify the outdoor fresh air to prevent impurities and flocs mixed in the outdoor fresh air from entering the room.

In some embodiments, the fresh air volute 700 is installed on the shell 100, and the fresh air volute 700 is connected to the shell 100 by fasteners such as screws or screws. In order to prevent the vibration generated by the rotation of the fresh air fan 300 from being transmitted to the shell 100 and other components, shock-absorbing rubber is provided between the fasteners and the shell 100 to buffer and absorb vibration.

As shown in FIG. 19 , the fresh air volute 700 includes a first split shell 730 and a second split shell 740, the first split shell 730 and the second split shell 740 are distributed along the length direction of the housing 100, the first split shell 730 and the second split shell 740 are connected to each other, the first split shell 730 and the second split shell 740 jointly define a first fresh air cavity 750, and the second split shell 740 defines a second fresh air cavity 760 inside; the second fresh air cavity 760 and the first fresh air cavity 750 jointly form a fresh air duct. Among them, the fresh air fan 300 is installed in the second fresh air cavity 760; the filter assembly 800 is arranged in the first fresh air cavity 750.

The second split shell 740 is usually designed as a split structure to facilitate the placement of the fresh air fan 300 in the second fresh air cavity 760; the second split shell 740 includes a first half shell 741 and a second half shell 742; the first half shell 741 and the second half shell 742 are arranged opposite to each other and jointly form the second fresh air cavity 760; the first split shell 730 and the second half shell 742 are arranged opposite to each other on the side away from the first half shell 741 to jointly form the first fresh air cavity 750.

In some embodiments, the second half shell 742 is provided with a second grille 7421, and the second grille 7421 is located at the connection point between the first fresh air chamber 750 and the second fresh air chamber 760, so that the first fresh air chamber 750 and the second fresh air chamber 760 are connected to each other. The second air inlet 710 is opened in the first fresh air chamber 750, the third air outlet 720 is opened in the second fresh air chamber 760, and the filter assembly 800 is arranged in the first fresh air chamber 750, so that the filter assembly 800 purifies the outdoor fresh air entering the first fresh air chamber 750 through the second air inlet 710, and the air in the first fresh air chamber 750 that has been purified by the filter assembly 800 enters the second fresh air chamber 760 through the second grille 7421, and flows into the room from the second air outlet 103 through the third air outlet 720.

It should be noted that the first fresh air chamber 750 is provided with a socket so that the filter assembly 800 can be extended into the first fresh air chamber 750 through the socket, thereby realizing the installation of the filter assembly 800. When the filter assembly 800 needs to be removed, the filter assembly 800 can be pulled out from the socket. By detachably installing the filter assembly 800 in the first fresh air chamber 750, it is convenient for users to disassemble, clean and replace the filter by themselves. The disassembly and installation method of the filter assembly 800 is simple and easy to operate.

As shown in FIG. 19 , the rotation axis of the fresh air fan 300 is arranged along the length direction of the housing 100; the fresh air fan 300 is configured to introduce indoor fresh air into the room; the fresh air fan 300 is installed in the second fresh air chamber 760, and the outdoor fresh air is introduced into the second fresh air chamber 760 from the second air inlet 710 through the operation of the fresh air fan 300, enters the second fresh air chamber 760 after being purified by the filter assembly 800, and flows into the room from the third air outlet 720 and the second air outlet 103. It should be noted that the fresh air fan 300 is a centrifugal fan.

In the related art, the fresh air fan 300 and the heat exchange fan 400 are each connected to a motor, and the fresh air fan 300 and the heat exchange fan 400 are driven independently by the motors connected to them. In some embodiments of the present disclosure, as shown in Figures 11 and 12, the heat exchange fan 400 and the fresh air fan 300 are driven by the same drive motor 500 to save one motor, reduce production costs, and improve efficiency. High assembly efficiency. The heat exchange fan 400 and the fresh air fan 300 operate synchronously, and the heat exchange fan 400 and the fresh air fan 300 are arranged with a common rotation axis; wherein the drive motor 500 can be a single-axis motor or a double-axis motor.

When the driving motor 500 is a single-axis motor, the driving motor 500 includes a motor shaft, the motor shaft of the driving motor 500 is connected to the heat exchange fan 400, and the end of the heat exchange fan 400 away from the driving motor 500 is connected to the fresh air fan 300, so that the driving motor 500 can drive the heat exchange fan 400 and the fresh air fan 300 to rotate synchronously.

When the driving motor 500 is a dual-axis motor, as shown in Figures 11 and 12, the driving motor 500 includes a first motor shaft 501 and a second motor shaft 502. The first motor shaft 501 and the second motor shaft 502 are coaxially arranged, the first motor shaft 501 is connected to the heat exchange fan 400, and the second motor shaft 502 is connected to the fresh air fan 300, so that the driving motor 500 can simultaneously drive the heat exchange fan 400 and the fresh air fan 300 to rotate synchronously.

It should be noted that the first half shell 741 is provided with an axial hole 210, the opening of the axial hole 210 extends along the length direction of the shell 100, and the axial hole 210 is configured to connect the second fresh air chamber 760 with the outside of the fresh air volute 700, so that the second motor shaft 502 of the driving motor 500 or the connecting shaft configured to connect the fresh air fan 300 and the heat exchange fan 400 can pass through the axial hole 210 and be connected to the fresh air fan 300.

The driving motor 500 is provided with protective covers 504 on both sides along the length direction of the shell 100, and the first partition part 108 is provided with a limiting part. The protective cover 504 located on the side of the driving motor 500 facing the heat exchange fan 400 cooperates with the limiting part to limit the position of the driving motor 500 in the length direction of the shell 100.

As shown in FIG. 10 and FIG. 16 , a protective cover 503 is connected to the side of the driving motor 500 facing the fresh air volute 700 . The protective cover 503 is installed on the housing 100 and is configured to limit the installation position of the driving motor 500 on the housing 100 .

In some embodiments, the protective cover 503 and the first partition portion 108 are arranged correspondingly along the length direction of the shell 100, and the protective cover 503 is located on the side of the first partition portion 108 away from the second partition portion 109; the protective cover 503 and the first partition portion 108 jointly define a third inner cavity 105 for installing the drive motor 500.

In other embodiments, the protective cover 503 is provided with a first connecting portion, and the shell 100 is provided with a second connecting portion, and the first connecting portion and the second connecting portion are connected with the same fastener such as a bolt or a screw to fix the protective cover 503 to the shell 100.

As shown in Fig. 17 and Fig. 20, the electric control box 600 is installed in the housing 100, and a circuit board 610 is arranged in the electric control box 600, and the circuit board 610 is coupled to the driving motor 500 through a line. The electric control box 600 includes a box body 601 and a cover plate 602, the box body 601 includes an opening, and the cover plate 602 is detachably arranged at the opening of the box body 601 to close the opening of the box body 601; the circuit board 610 is arranged in the box body 601. By designing the electric control box 600 as a split and closable structure, the circuit board 610 arranged inside the box body 601 is protected; by setting the cover plate 602 to be detachably connected to the box body 601, the box body 601 is convenient to open or close.

In the related art, the electric control box 600 and the fresh air volute 700 are usually arranged at the two ends of the length direction of the shell 100. When the drive motor 500 is a single-axis motor, the drive motor 500 drives the fresh air fan 300 to rotate through the heat exchange fan 400. When the electric control box 600 and the fresh air volute 700 are arranged at the two ends of the length direction of the shell 100, the distance between the drive motor 500 and the electric control box 600 is relatively close, and the length of the connecting line between the drive motor 500 and the circuit board 610 is relatively short. Moreover, the routing of the connecting line is simple and easy to operate. This arrangement is more suitable when the drive motor 500 is a single-axis motor.

However, when the drive motor 500 is a dual-axis motor, since the drive motor 500 is located between the heat exchange fan 400 and the fresh air fan 300 and is respectively connected to the heat exchange fan 400 and the fresh air fan 300, at this time, if the electrical control box 600 and the fresh air volute 700 are also correspondingly arranged at the two ends in the length direction of the shell 100, the distance between the drive motor 500 and the electrical control box 600 is relatively far, and the connection line of the circuit board 610 needs to at least cross the entire heat exchange fan 400 to be connected to the drive motor 500. The length of the connection line between the drive motor 500 and the circuit board 610 is relatively long, and when the connection line crosses the heat exchange fan 400, it is also necessary to prevent the heat exchange fan 400 from being entangled with the connection line when rotating. Not only is the required length of the connection line relatively long, but the routing of the connection line is also cumbersome. Therefore, this arrangement is not suitable for the case where the drive motor 500 is a dual-axis motor.

In some embodiments of the present disclosure, the electric control box 600 and the fresh air volute 700 are arranged on the same side of the drive motor 500 to shorten the length of the connection line between the circuit board 610 and the drive motor 500 as much as possible.

Since the drive motor 500 needs to be connected to the fresh air fan 300, in order to prevent the electric control box 600 from interfering with the connection between the drive motor 500 and the fresh air fan 300, the electric control box 600 is arranged on the side of the fresh air volute 700 away from the drive motor 500. Although this arrangement requires the connection line of the circuit board 610 to cross the fresh air volute 700 before it can be connected to the drive motor 500, the size of the fresh air volute 700 along the length direction of the shell 100 is smaller than the size of the heat exchange fan 400 along the length direction of the shell 100. Moreover, the fresh air fan 300 is arranged in the fresh air volute 700, and the fresh air volute 700 has little effect on the safety of the connecting line. Therefore, in this arrangement, the electric control box 600 will not affect the connection between the drive motor 500 and the fresh air fan 300, and the distance between the drive motor 500 and the electric control box 600 is relatively close. Not only can the length of the connecting line between the drive motor 500 and the circuit board 610 be shortened, which can save costs, but also the safety and reliability of the connecting line connecting the circuit board 610 and the drive motor 500 are increased.

By locating the electric control box 600 on the side of the first half shell 741 away from the second half shell 742, the distance between the electric control box 600 and the drive motor 500 is minimized, thereby reducing the wiring length of the connection line and facilitating the connection between the circuit board 610 and the drive motor 500 through the line.

In some embodiments, there is a gap between the electric control box 600 and the fresh air volute 700 to prevent direct contact between the electric control box 600 and the fresh air volute 700. Since vibration is inevitably generated when the fresh air fan 300 is in operation, if the electric control box 600 is in direct contact with the fresh air volute 700, the vibration generated when the fresh air fan 300 is in operation will be transmitted to the electric control box 600, affecting the service life of the circuit board 610. By setting the electric control box 600 and the fresh air volute 700 at a gap to prevent the vibration of the fresh air volute 700 from being transmitted to the electric control box 600, the possibility of vibration of the electric control box 600 and the circuit board 610 is reduced, thereby improving the service life of the circuit board 610 in the electric control box 600.

Since the circuit board 610 is roughly a plate-shaped structure, when the plane where the circuit board 610 is located is set in the horizontal direction, the circuit board 610 occupies a larger space in the length direction of the shell 100, which will increase the size of the shell 100 in the length direction, thereby increasing the occupied space of the wall-mounted air-conditioning indoor unit. In some embodiments of the present disclosure, the plane where the circuit board 610 is located is set in the vertical direction or tilted in the vertical direction to reduce the occupied space of the electric control box 600 in the length direction of the shell 100.

It should be noted that since the rotation axis of the fresh air fan 300 extends along the length direction of the shell 100, when the plane where the circuit board 610 is located is set in the vertical direction or tilted in the vertical direction, the rotation axis of the fresh air fan 300 intersects with the plane where the circuit board 610 is located.

In order to facilitate installation of the electric control box 600 , as shown in FIG. 3 and FIG. 7 , the housing 100 is provided with a mounting seat 107 . The mounting seat 107 is disposed close to the rear side of the housing 100 , and the electric control box 600 is mounted on the mounting seat 107 .

In some embodiments, the opening of the box body 601 is arranged toward the front side of the housing 100 , and one end of the box body 601 away from the cover plate 602 is connected to the mounting seat 107 .

In some embodiments, as shown in FIG. 7 , the protective cover 503 and the mounting seat 107 together define a second inner cavity 106 , and the fresh air volute 700 and the electric control box 600 are disposed in the second inner cavity 106 . The fresh air volute 700 is also mounted on the mounting seat 107 .

In some embodiments of the present disclosure, the drive motor 500 is a dual-axis motor, and the drive motor 500 is located between the fresh air fan 300 and the heat exchange fan 400; it should be noted that the first inner cavity 104, the third inner cavity 105 and the second inner cavity 106 are distributed along the length direction of the shell 100.

In some embodiments, the fresh air fan 300 is disposed near the left side of the housing 100 , and the electric control box 600 is located on the left side of the fresh air fan 300 .

In other embodiments, the fresh air fan 300 is disposed near the right side of the housing 100 , and the electric control box 600 is located on the right side of the fresh air fan 300 .

As shown in Figure 13, the heat exchange fan 400 extends along the length direction of the shell 100. A shaft sleeve 401 is provided at one end of the heat exchange fan 400 connected to the drive motor 500. The shaft sleeve 401 is provided with a connecting hole. The first motor shaft 501 extends into the connecting hole to connect the drive motor 500 to the heat exchange fan 400.

In some embodiments, as shown in FIG. 15 and FIG. 16 , the first motor shaft 501 is provided with a fourth positioning portion 5011 , and the fourth positioning portion 5011 is configured to limit the distance by which the first motor shaft 501 extends into the communicating hole.

As shown in Figure 14, the heat exchange fan 400 includes a support shaft 140, which is arranged at one end of the body of the heat exchange fan 400 away from the driving motor 500. The support shaft 140 is connected to a bearing component 120 to support the rotation of the heat exchange fan 400 and increase the stability of the operation of the heat exchange fan 400. It should be noted that the heat exchange fan 400 is a cross-flow fan.

As shown in FIG14 , the bearing component 120 includes a bearing sleeve 121 and a bearing ball 122. The bearing ball 122 is installed in the bearing sleeve 121, and the support shaft 140 is arranged through the bearing ball 122. The bearing sleeve 121 abuts against the inner wall of the bearing seat 130 so that the bearing component 120 is installed in the bearing seat 130. It should be noted that the bearing sleeve 121 is made of a soft material such as rubber or silicone.

As shown in FIGS. 9 and 14 , the housing 100 is further provided with a bearing seat 130 configured to mount the bearing component 120 , and the bearing seat 130 is mounted on the second partition portion 109 .

In some embodiments, the bearing seat 130 is provided with a clamping portion 131, and the second partition portion 109 is provided with a connecting port, and the clamping portion 131 is arranged in the connecting port to fix the bearing seat 130 with the second partition portion 109, thereby realizing the installation and fixation of the bearing seat 130.

Since the driving motor 500 drives the heat exchange fan 400 and the fresh air fan 300 to operate simultaneously, the fresh air fan 300 cannot stop working alone, resulting in that the fresh air function cannot be turned off when the air-conditioning indoor unit is working. Therefore, the above-mentioned air-conditioning indoor unit is provided with a first switch component 770 at the second air inlet 710, and the second air inlet 710 is opened or closed by the first switch component 770 to control whether outdoor fresh air is introduced into the first fresh air chamber 750, thereby controlling the opening and closing of the fresh air function.

When the air conditioner indoor unit is working, when it is necessary to turn off the fresh air function, closing the second air inlet 710 can prevent the outdoor fresh air from being introduced into the first fresh air chamber 750, thereby preventing the outdoor fresh air from flowing into the room from the third air outlet 720; when it is necessary to turn on the fresh air function, opening the second air inlet 710 can allow the outdoor fresh air to be introduced into the first fresh air chamber 750 from the second air inlet 710, thereby allowing the outdoor fresh air to flow into the room from the third air outlet 720.

It should be noted that closing the second air inlet 710 by the first switch assembly 770 can also prevent fresh air from flowing back into the room when the air-conditioning indoor unit is turned off, thereby reducing indoor air noise and wind feeling when the fresh air function is not turned on, and improving the user experience.

In some embodiments, a second switch assembly 780 is provided at the third air outlet 720 to open or close the third air outlet 720 .

The second switch assembly 780 and the first switch assembly 770 operate independently of each other, and the manner and working principle of the first switch assembly 770 for opening or closing the second air inlet 710 and the manner and working principle of the second switch assembly 780 for opening or closing the third air outlet 720 belong to the relevant technologies in the field and will not be repeated here.

The above-mentioned wall-mounted air conditioner arranges the electric control box 600 on the side of the fresh air volute 700 away from the heat exchange fan 400 along the length direction of the shell 100, so that the distance between the electric control box 600 and the drive motor 500 is as small as possible, thereby reducing the length of the line used to connect the circuit board 610 and the drive motor 500, simplifying the wiring path of the connecting line, and increasing the reliability of the operation of the air conditioner indoor unit; by intersecting the rotation axis of the fresh air fan 300 with the plane where the circuit board 610 is located, so that the plane where the circuit board 610 is located is arranged in the vertical direction or inclined in the vertical direction, thereby reducing the space occupied by the electric control box 600 in the length direction of the shell 100, thereby reducing the size of the shell 100 in the length direction.

Another implementation of the wall-mounted air conditioner disclosed herein is shown in Figures 22 to 37. In some embodiments of the present disclosure, the wall-mounted air conditioner includes an indoor unit and an outdoor unit. The outdoor unit is arranged outdoors. The outdoor unit includes a compressor and an outdoor heat exchanger. The indoor unit includes a shell 100, an indoor heat exchanger 200, a heat exchange fan 400, a fresh air module and a drive motor 500.

As shown in Figure 22, the shell 100 is configured to form the overall appearance of the indoor unit of the wall-mounted air conditioner, and the shell 100 has a top and a bottom, the top of the shell 100 and the bottom of the shell 100 are opposite ends, and the height direction of the shell 100 is from the top of the shell 100 to the bottom of the shell 100; the left side of the shell 100 and the right side of the shell 100 are opposite sides, and the length direction of the shell 100 is from the left side of the shell 100 to the right side of the shell 100; the front side of the shell 100 and the back side of the shell 100 are opposite sides, and the direction from the front side of the shell 100 to the back side of the shell 100 is the thickness direction of the shell 100; wherein, the shell 100 is set on the top of the room or the upper space of the room, the front side of the shell 100 is set toward the user, and the back side of the shell 100 is set toward the wall.

A heat exchange air duct is defined inside the housing 100. The housing 100 is formed with a first air inlet 101 and a first air outlet 102. The first air inlet 101 and the first air outlet 102 are respectively connected to the heat exchange air duct. The first air inlet 101 is located at the top of the housing 100, and the first air outlet 102 is opened at the front side of the housing 100 and is arranged near the bottom of the housing 100, that is, the first air outlet 102 is located at the front lower side of the housing 100. A first grille is provided at the first air inlet 101 to prevent debris from entering the interior of the housing 100.

As shown in Fig. 28 and Fig. 29, the first air outlet 102 is located at the lower front side of the housing 100, and a first air guide plate 230 is provided at the first air outlet 102. The first air guide plate 230 is connected to the housing 100 in an openable and closable manner to open or close the first air outlet 102. Since the airflow from the first air outlet 102 to the room is easy to directly blow the human body, causing discomfort to the user, by adjusting the rotation angle of the first air guide plate 230, the airflow from the first air outlet 102 to the room can be prevented from directly blowing the human body.

In some embodiments, the first air guide plate 230 has a first setting position, and when the first air guide plate 230 moves to the first setting position, the airflow can be prevented from blowing directly onto the human body. It should be noted that the first setting position is artificially set, and the first air outlet 102 is usually opened at an angle below the front side of the housing 100. When the user is located at an angle below the first air outlet 102, it is easy to be blown directly onto the human body by the airflow. By setting the first air guide plate 230 to rotate at the first air outlet 102 to change the direction of the airflow flowing out of the first air outlet 102, the airflow can be prevented from blowing directly onto the human body. This is common knowledge in the art and will not be described in detail.

In other embodiments, when the first air guide plate 230 moves to the first set position, the airflow flowing out of the first air outlet 102 usually blows obliquely upward.

In other embodiments, the first air guide plate 230 is disposed along the length direction of the first air outlet 102, so that the first air guide plate 230 opens or closes the first air outlet 102. The first air guide plate 230 opens or closes the first air outlet 102 by rotating around a horizontal axis.

In other embodiments, a second air guide plate 240 is provided between the first air guide plate 230 and the first air outlet 102, and the second air guide plate 240 is arranged close to the indoor heat exchanger 200. The second air guide plate 240 is configured to guide the direction of the airflow. Through the operation of the heat exchange fan 400, the air-conditioned air after heat exchange with the indoor heat exchanger 200 is guided to the second air guide plate 240, and the second air guide plate 240 guides part of the air-conditioned air to the first air outlet 102, and the second air guide plate 240 guides another part of the air-conditioned air to the first air guide plate 230, and the air-conditioned air is guided to the first air outlet 102 by the first air guide plate 230.

It should be noted that the second air guide plate 240 guides the air-conditioning wind to blow toward the first air guide plate 230, and uses the first air guide plate 230 to guide the air outlet direction of the air-conditioning wind to prevent the air-conditioning wind from directly blowing on the human body.

It should also be noted that the second air guide plate 240 can also increase the air outlet resistance of the conditioned air to reduce the air outlet volume, so that when the wall-mounted air conditioner only turns on the fresh air function, the air volume blown out by the first air outlet 102 can be reduced, reducing the air outlet noise of the conditioned air.

The second air guide plate 240 has a second setting position. When the second air guide plate 240 moves to the second setting position, the second air guide plate 240 can guide the airflow passing through the heat exchange fan 400 to the first air guide plate 230. It should be noted that the second setting position is also artificially set. When the second air guide plate 240 moves to the second setting position, the second air guide plate 240 has a good guiding effect on the airflow.

The second air guide plate 240 is arranged along the length direction of the first air outlet 102 so that the second air guide plate 240 can guide the wind horizontally. 240 moves to the second set position or returns to the initial position from the second set position in a rotating manner around a horizontal axis; wherein, when the second air guide plate 240 is in its initial position, the first air guide plate 230 closes the first air outlet 102, and the first air guide plate 230 and the second air guide plate 240 do not interfere with each other.

It should be noted that the first air guide plate 230 and the second air guide plate 240 move independently of each other. The first air guide plate 230 is connected to a first motor, and the second air guide plate 240 is connected to a second motor. The first motor and the second motor work independently of each other. The first motor is configured to drive the first air guide plate 230 to move, and the second motor is configured to drive the second air guide plate 240 to move.

It should also be noted that, in some embodiments, the second air guide plate 240 moves to the second set position, and the first air guide plate 230 is in the position to close the first air outlet 102, then the second air guide plate 240 and the first air guide plate 230 will interfere with each other. Therefore, when opening and closing the first air outlet 102, the first air guide plate 230 is first moved to the first set position, and then the second air guide plate 240 is moved to the second set position. The purpose is that since the second air guide plate 240 is configured to guide the airflow passing through the heat exchange fan 400 to the first air guide plate 230, if the second air guide plate 240 moves to the second set position first, more airflow will flow to the first air guide plate 230. If the first air guide plate 230 has not moved to the first set position at this time, the airflow and the first air guide plate 230 will easily generate noise, and the first air guide plate 230 will easily block the airflow, affecting the air supply effect. Correspondingly, when the first air outlet 102 is closed, the second air guide plate 240 is first moved to its initial position, and then the first air guide plate 230 is moved to its initial position.

In other embodiments, when the first air outlet 102 is closed, the movement of the second air guide plate 240 may interfere with the first air guide plate 230 .

As shown in FIG. 24 , the indoor heat exchanger 200 is installed in the housing 100 and is located in the heat exchange air duct, and is configured to heat the indoor air in the heat exchange air duct to form air-conditioning air to meet the cooling or heating needs of the user; it should be noted that the indoor heat exchanger 200 is arranged close to the first air inlet 101. It should also be noted that the air-conditioning air can be cold air, hot air, or even normal temperature air.

The indoor heat exchanger 200 is connected to the outdoor heat exchanger through a pipeline, and refrigerant flows in the pipeline. The compressor is configured to drive the refrigerant to flow. The refrigerant in the pipeline flows between the indoor heat exchanger 200 and the outdoor heat exchanger to heat the indoor air in the heat exchange duct to form air-conditioned air.

As shown in FIG. 25 , the heat exchange fan 400 is installed in the housing 100 and is located in the heat exchange air duct, and the heat exchange fan 400 is located below the indoor heat exchanger 200. The axial direction of the heat exchange fan 400 extends along the length direction of the housing 100. The heat exchange fan 400 is operated to introduce indoor air into the heat exchange air duct, and after heat exchange in the indoor heat exchanger 200 to form conditioned air, the conditioned air flows into the room from the first air outlet 102. It should be noted that the heat exchange fan 400 is a cross-flow fan.

As shown in Fig. 31-Fig. 32, the fresh air module is configured to introduce outdoor fresh air into the room; the fresh air module includes a fresh air volute 700 and a fresh air fan 300, the fresh air volute 700 and the heat exchange fan 400 are distributed along the length direction of the housing 100, a fresh air duct is defined in the fresh air volute 700, the fresh air fan 300 is installed in the fresh air duct, the fresh air duct is provided with a second air inlet 710 and a third air outlet 720, the second air inlet 710 is connected to the outside, and the third air outlet 720 is connected to the second air outlet 103. It should be noted that the housing 100 is also provided with a second air outlet 103, and the second air outlet 103 is connected to the third air outlet 720, so that the outdoor fresh air flows from the second air outlet 103 to the room.

Through the operation of the fresh air fan 300, outdoor fresh air is introduced into the fresh air duct from the second air inlet 710, passes through the third air outlet 720, and flows into the room from the second air outlet 103.

A filter assembly 800 is provided in the fresh air duct to purify the outdoor fresh air flowing into the room. The filter assembly 800 includes a purification frame and a filter, the filter is arranged on the purification frame, and the filter is configured to filter and purify the outdoor fresh air to prevent impurities and flocs mixed in the outdoor fresh air from entering the room.

In some embodiments, the fresh air volute 700 is installed on the shell 100, and the fresh air volute 700 is connected to the shell 100 by fasteners such as screws or screws. In order to prevent the vibration generated by the rotation of the fresh air fan 300 from being transmitted to the shell 100 and other components, shock-absorbing rubber is provided between the fasteners and the shell 100 to buffer and absorb vibration.

As shown in Figures 25 and 32, the fresh air fan 300 is a centrifugal fan, and the fresh air fan 300 is configured to introduce indoor fresh air into the room; through the operation of the fresh air fan 300, the outdoor fresh air is introduced into the fresh air duct from the second air inlet 710, and after purification through the filter assembly 800, it passes through the third air outlet 720 and flows into the room from the second air outlet 103.

In some embodiments, the opening direction of the third air outlet 720 is set upward, and the second air outlet 103 is opened at the top of the housing 100 and is arranged close to the first air outlet 102. Since the second air outlet 103 is opened at the top of the housing 100, when the outdoor fresh air flows into the room from the second air outlet 103, the outdoor fresh air flowing into the room from the second air outlet 103 can be introduced into the interior of the housing 100 from the first air inlet 101 through the operation of the heat exchange fan 400, and then flows into the room from the first air outlet 102.

It should be noted that when the first air guide plate 230 is in the first setting position and the second air guide plate 240 is in the second setting position, the airflow passing through the heat exchange fan 400 can be directed to the first air guide plate 230, and the first air guide plate 230 can direct the airflow passing through the heat exchange fan 400 to the housing. 100 and mixed with the fresh air at the second air outlet 103.

The above-mentioned wall-mounted air conditioner includes at least a fresh air function and a temperature control function. The fresh air function is to introduce outdoor fresh air into the room through the fresh air fan 300, and the temperature control function is to introduce indoor air into the first inner cavity 104 through the heat exchange fan 400. After the indoor heat exchanger 200 exchanges heat to form conditioned air, the conditioned air flows into the room and exchanges heat with the indoor air to adjust the indoor ambient temperature.

In the related art, the fresh air fan 300 and the heat exchange fan 400 are each connected to a motor, and the fresh air fan 300 and the heat exchange fan 400 operate independently under the driving action of the motors connected to them. In some embodiments of the present disclosure, as shown in Figures 24 and 25, the heat exchange fan 400 and the fresh air fan 300 are driven by the same drive motor 500 to save a motor, reduce production costs, and improve assembly efficiency. The heat exchange fan 400 and the fresh air fan 300 operate synchronously, and the heat exchange fan 400 and the fresh air fan 300 are arranged on the same rotating axis 786; wherein the drive motor 500 can be a single-axis motor or a double-axis motor.

When the driving motor 500 is a single-axis motor, the driving motor 500 includes a motor shaft, the motor shaft of the driving motor 500 is connected to the heat exchange fan 400, and the end of the heat exchange fan 400 away from the driving motor 500 is connected to the first connecting shaft 402, and the first connecting shaft 402 is connected to the fresh air fan 300 to connect the heat exchange fan 400 with the fresh air fan 300, so that the driving motor 500 can drive the heat exchange fan 400 and the fresh air fan 300 to rotate synchronously.

In some embodiments, a shaft sleeve 401 is provided at the other end of the heat exchange fan 400 along the length direction of the shell 100. The shaft sleeve 401 is provided with a mounting hole, and the motor shaft of the drive motor 500 extends into the mounting hole to connect the drive motor 500 and the heat exchange fan 400 to each other.

In other embodiments, the first connecting shaft 402 is connected to a bearing component 120 , and the bearing component 120 is configured to support the first connecting shaft 402 to rotate; the housing 100 is provided with a bearing seat 130 , and the bearing component 120 is installed in the bearing seat 130 .

When the driving motor 500 is a dual-axis motor, the driving motor 500 includes a first motor shaft 501 and a second motor shaft 502. The first motor shaft 501 and the second motor shaft 502 are coaxially arranged. The first motor shaft 501 is connected to the heat exchange fan 400, and the second motor shaft 502 is connected to the fresh air fan 300, so that the driving motor 500 can simultaneously drive the heat exchange fan 400 and the fresh air fan 300 to rotate synchronously.

It should be noted that an axial hole 210 is opened on the side of the fresh air volute 700 facing the heat exchange fan 400, and the opening of the axial hole 210 extends along the length direction of the shell 100. The axial hole 210 is configured to connect the fresh air duct with the outside of the fresh air volute 700, so that the first connecting shaft 402 or the second motor shaft 502 can pass through the axial hole 210 and connect with the heat exchange fan 400.

In some embodiments, as shown in FIG. 31-FIG. 32, the fresh air volute 700 includes a first split shell 730 and a second split shell 740, the first split shell 730 and the second split shell 740 are distributed along the length direction of the housing 100, and the first split shell 730 and the second split shell 740 are connected to each other, the first split shell 730 and the second split shell 740 jointly define a first fresh air cavity 750, and the second split shell 740 defines a second fresh air cavity 760 inside; the second fresh air cavity 760 and the first fresh air cavity 750 jointly form a fresh air duct. The fresh air fan 300 is installed in the second fresh air cavity 760; the filter assembly 800 is arranged in the first fresh air cavity 750.

The second split shell 740 is usually designed as a split structure to facilitate the installation of the fresh air fan 300; the second split shell 740 includes a first half shell 741 and a second half shell 742; the first half shell 741 and the second half shell 742 are arranged opposite to each other and jointly form a second fresh air cavity 760; the first split shell 730 and the second half shell 742 are arranged opposite to each other on the side away from the first half shell 741 to jointly form a first fresh air cavity 750.

The second half shell 742 is provided with a second grille 7421, which is located at the connection point between the first fresh air chamber 750 and the second fresh air chamber 760, so that the first fresh air chamber 750 and the second fresh air chamber 760 are connected to each other. The second air inlet 710 is provided in the first fresh air chamber 750, the third air outlet 720 is provided in the second fresh air chamber 760, and the filter assembly 800 is provided in the first fresh air chamber 750, so that the filter assembly 800 purifies the outdoor fresh air entering the first fresh air chamber 750 through the second air inlet 710, and the air in the first fresh air chamber 750 that has been purified by the filter assembly 800 enters the second fresh air chamber 760 through the second grille 7421, and flows into the room through the second air outlet 103 through the third air outlet 720.

In order to install the fresh air volute 700, the fresh air fan 300 and the driving motor 500, as shown in Figure 6, the shell 100 is provided with a first inner cavity 104, a third inner cavity 105 and a second inner cavity 106, and the third inner cavity 105, the first inner cavity 104 and the second inner cavity 106 are distributed along the length direction of the shell 100; the first inner cavity 104 is configured to install the heat exchange fan 400; the third inner cavity 105 is configured to install the driving motor 500; the second inner cavity 106 is configured to install the fresh air module.

In some embodiments, the second inner cavity 106 is separated from the first inner cavity 104 by a first partition, and the first inner cavity 104 is separated from the third inner cavity 105 by a second partition. The first partition and the second partition can also be used to axially limit the heat exchange fan 400, thereby increasing the reliability of the installation of the heat exchange fan 400.

Since the driving motor 500 drives the heat exchange fan 400 and the fresh air fan 300 to operate simultaneously, the fresh air fan 300 cannot stop working alone, resulting in that the fresh air function cannot be turned off when the air conditioner indoor unit is working. Therefore, the above-mentioned wall-mounted air conditioner is provided with a first switch component 770 at the second air inlet 710 and a second switch component 780 at the third air outlet 720. The first switch component 770 is used to open or close the second air inlet 710, and the second switch component 780 is used to open or close the third air outlet 720 to control whether outdoor fresh air is introduced into the fresh air duct. Thereby controlling the opening and closing of the fresh air function.

As shown in Figure 30, the first switch assembly 770 includes a baffle 772, a first driving member 771, a first gear and a first rack 773. The baffle 772 is arranged at the second air inlet 710 in an openable and closable manner. The first driving member 771 is installed on the fresh air volute 700. The rotating shaft 786 of the first driving member 771 is connected to the first gear. The baffle 772 is provided with a first rack 773, and the first gear is meshed with the first rack 773.

When the fresh air function is turned on, the first driving member 771 drives the first gear to drive the first rack 773 to move, and then drives the baffle 772 to move linearly to open the second air inlet 710, so that outdoor fresh air can enter the room; when the fresh air function is turned off, the first driving member 771 drives the first gear to drive the first rack 773 to move, and the baffle 772 moves linearly to close the second air inlet 710, thereby preventing outdoor fresh air from entering the room.

It should be noted that the baffle 772 closing the second air inlet 710 can also prevent fresh air from flowing back into the room when the indoor unit of the wall-mounted fresh air air conditioner is turned off, reducing the indoor air noise and wind feeling when the fresh air function is not turned on, and improving the user experience.

As shown in FIG. 32 and FIG. 33 , the second switch assembly 780 includes a plurality of guide pieces 781, the length direction of which is parallel and perpendicular to the length direction of the third air outlet 720. The guide pieces 781 are rotatably connected to the third air outlet 720 via a rotating shaft 786. The second driving member 784 is close to one side of the guide piece 781, and the transmission gear 782 is coaxially fixed to one end of the rotating shaft 786 on the corresponding guide piece 781 close to the second driving member 784. The length direction of the second rack 783 is the same as the direction in which the guide pieces 781 are spaced apart. The second gear 785 meshes with the second rack 783 and drives the second rack 783 to move along the length direction of the second rack 783. When the second rack 783 moves, it drives the transmission gears 782 to rotate to control the flipping of the guide pieces 781. When the width directions of the guide pieces 781 are in the same plane, the guide pieces 781 close the third air outlet 720.

In some embodiments, the wind direction of the air output through the third air outlet 720 can be adjusted according to the flipping direction of the guide vane 781 .

In some embodiments, tooth grooves are provided on both sides of the second rack 783; each transmission gear 782 is disposed on one side of the second rack 783 and meshes with the second rack 783. The second gear 785 meshes with the second rack 783 on the side away from the transmission gear 782.

In some embodiments, a mounting frame is provided at the third air outlet 720; the two ends of each guide piece 781 rotate on the opposite side walls in the mounting frame; a transmission cavity is provided on the mounting frame; the second rack 783, the second gear 785 and the transmission gear 782 are all provided in the transmission cavity. The transmission cavity is provided to prevent the second rack 783, the second gear 785 and the transmission gear 782 from being separated from each other. The transmission cavity is also used to limit the moving direction of the second rack 783, thereby improving the stability of the structure.

When the fresh air function is turned on, the second driving member 784 drives the second gear 785 to rotate, the second rack 783 moves horizontally in the horizontal plane under the action of the second gear 785, and the transmission gear 782 rotates under the action of the second rack 783 and drives the guide vane 781 to rotate, so that the guide vane 781 opens the third air outlet 720. When the fresh air function is turned off, the second driving member 784 drives the second gear 785 to rotate, the second rack 783 moves horizontally in the horizontal plane under the action of the second gear 785, and the transmission gear 782 rotates under the action of the second rack 783 and drives the guide vane 781 to rotate, so that the guide vane 781 closes the third air outlet 720.

It should be noted that when the fresh air function is turned off, the baffle 772 closes the second air inlet 710 to prevent outdoor fresh air from entering the room. However, since the fresh air fan 300 rotates synchronously with the heat exchange fan 400, if the third air outlet 720 is not closed, the air in the fresh air volute 700 flows into the room from the third air outlet 720 under the action of the heat exchange fan 400, and negative pressure is formed in the fresh air volute 700, which will generate loud noise and affect the user experience. Closing the third air outlet 720 by the guide vane 781 can prevent negative pressure from forming in the fresh air volute 700, thereby avoiding a lot of noise when the fresh air function is turned off.

When the wall-mounted air conditioner needs to turn on the fresh air function separately, the wall-mounted air conditioner can be prevented from exchanging heat for the indoor air by stopping the compressor from working. However, since the heat exchange fan 400 and the fresh air fan 300 rotate synchronously, the indoor air will be introduced into the interior of the shell 100 from the first air inlet 101 under the action of the heat exchange fan 400. If the first air guide plate 230 closes the first air outlet 102, the indoor air will not circulate smoothly inside the shell 100, generating noise. By opening the first air outlet 102 through the first air guide plate 230, the indoor air inside the shell 100 will flow from the first air outlet 102 to the room, thereby preventing the indoor air from generating noise due to poor circulation inside the shell 100.

The above-mentioned wall-mounted air conditioner further includes a controller, which is coupled to the driving motor 500, the indoor heat exchanger 200, the first motor, the second motor, the first driving member 771 and the second driving member 784. The controller controls the movement of the first motor, the second motor, the first driving member 771 and the second driving member 784 to reduce the noise generated when the wall-mounted air conditioner turns on the fresh air function alone, thereby improving the fresh air outlet performance.

The user can input the fresh air start command to the controller through a remote control or a mobile phone APP. The way in which the user inputs the fresh air start command to the controller belongs to the conventional technology in the field and will not be repeated here. After receiving the fresh air start command, the controller controls the first motor, the second motor, the first drive member 771 and the second drive member 784 to move. As shown in Figure 13, when the controller receives the fresh air start command, it controls the first motor to drive the first air guide plate 230 to move to the first set position so that the first air guide plate 230 opens the first air outlet 102; controls the first drive member 771 to drive the baffle 772 to open the second air inlet 710, and controls the second drive member 784 to drive the guide vane 781 to open the third air outlet 720; after the first air guide plate 230 moves to the first set position, controls the second motor to drive the second air guide plate 240 to move to the second set position. Location.

By opening the first air outlet 102, the second air inlet 710, and the third air outlet 720 synchronously, the response speed of the wall-mounted air conditioner is increased and the air intake rate is improved. The design principle of controlling the second motor to drive the second air guide plate 240 to move to the second set position after the first air guide plate 230 moves to the first set position is: the second air guide plate 240 is configured to cooperate with the first air guide plate 230. After the first air guide plate 230 moves to the first set position, the second air guide plate 240 guides the airflow to the first air outlet 102. When the second air guide plate 240 moves to the second set position, it has a good guiding effect on the airflow. If the first air guide plate 230 does not move to the first set position and the second air guide plate 240 moves to the second set position, the airflow guided by the second air guide plate 240 may directly blow the first air guide plate 230, resulting in a large noise. The airflow guided by the second air guide plate 240 may also flow from the first air outlet 102 to the room. Since the first air guide plate 230 does not move to the first set position at this time, the airflow flowing from the first air outlet 102 to the room is easy to directly blow the human body. In many cases, when the wall-mounted air conditioner just introduces outdoor fresh air, users pay more attention to whether the fresh air blows directly on the human body than the amount of fresh air. As shown in FIG14 , after the controller receives the command to turn off the fresh air, it controls the speed of the drive motor 500 to decrease within a preset range; when the speed of the drive motor 500 decreases within the preset range, it controls the first drive member 771 to drive the baffle 772 to close the second air inlet 710, controls the second drive member 784 to drive the guide vane 781 to close the third air outlet 720, and controls the second motor to drive the second air guide plate 240 to return to the initial position; after the second air guide plate 240 returns to the initial position, it controls the first motor to drive the first air guide plate 230 to close the first air outlet 102.

Since the wall-mounted air conditioner turns on the fresh air function separately, when the user inputs a fresh air turn-off command to the controller through the remote control or the mobile phone APP, the heat exchange fan 400 and the fresh air fan 300 do not need to work, so the speed of the drive motor 500 is reduced. When the speed of the drive motor 500 is reduced to a preset range, the speed of the fresh air fan 300 is reduced, and the stall noise caused by the operation of the fresh air fan 300 in the fresh air volute 700 caused by closing the second air inlet 710 is small.

It should be noted that the actions of reducing the speed of the driving motor 500 to a preset range, closing the second air inlet 710 with the baffle 772, closing the third air outlet 720 with the driving guide 781, and returning the second air guide plate 240 to the initial position are all performed gradually and require a certain amount of time to complete. When the speed of the driving motor 500 is reduced to a preset range, the ability of the fresh air fan 300 to introduce outdoor fresh air gradually decreases, and the amount of outdoor fresh air introduced gradually decreases. At this time, the second air inlet 710 is also gradually closed, so it will not affect the fresh air fan 300 to introduce outdoor fresh air. Although the second air guide plate 240 returns to the initial position to weaken the guiding effect of the outdoor fresh air, since the amount of outdoor fresh air introduced at this time is small, even if the outdoor fresh air contacts the first air guide plate 230, the force of the outdoor fresh air on the first air guide plate 230 is also reduced, and the noise generated is also reduced. Even if the outdoor fresh air flows directly to the human body from the first air outlet 102 to the room, the direct blowing effect of the outdoor fresh air on the human body is also weakened, causing the human body to feel less uncomfortable. Therefore, by designing the baffle 772 to close the second air inlet 710, the driving guide vane 781 to close the third air outlet 720, and the second air guide plate 240 to return to the initial position simultaneously, the response time when closing the fresh air function can be reduced and the work efficiency can be improved.

In some embodiments, when the controller receives the instruction to turn off the fresh air, it controls the drive motor 500 to stop rotating.

It should be noted that after the wall-mounted air conditioner turns on the fresh air alone, the controller receives an instruction to turn off the fresh air, and then the controller controls the drive motor 500 to stop rotating. If the wall-mounted air conditioner turns on the fresh air and temperature control functions at the same time, and the controller receives an instruction to turn off the fresh air, the controller cannot mechanically control the drive motor 500 to stop rotating. At this time, other conditions need to be judged. This is because stopping the drive motor 500 will turn off both the fresh air and temperature control functions. If the user only wants to turn off the fresh air function and the temperature control function is turned on normally, the controller controlling the drive motor 500 to stop rotating will not meet the user's needs, which will not be repeated here.

In some embodiments, after the first air guide plate 230 moves to the first set position, the baffle plate 772 opens the second air inlet 710, the guide vane 781 opens the third air outlet 720, and the second air guide plate 240 moves to the second set position, the controller controls the drive motor 500 to start. By moving the first air guide plate 230, the second air guide plate 240, the baffle plate 772, and the guide vane 781 to the right position and then starting the drive motor 500, the noise generated when the fresh air is turned on can be reduced, and the indoor air can be prevented from blowing directly on the human body.

In some embodiments, after receiving the command to start fresh air, the controller controls the drive motor 500 to enter the startup phase, and the speed of the drive motor 500 continues to increase; when the speed of the drive motor 500 reaches the set value, the drive motor 500 is controlled to enter the stable output phase, and the drive motor 500 rotates at the set speed.

In other embodiments, as shown in FIG. 16 , after the first air guide plate 230 moves to the first set position and the drive motor 500 is in the startup phase, the controller controls the second motor to drive the second air guide plate 240 to move to the second set position. By moving the second air guide plate 240 to the second set position during the process of increasing the speed of the drive motor 500, the air induction capacity of the fresh air fan and the heat exchange fan is relatively weak before the drive motor 500 reaches the set speed. Therefore, the airflow rate when flowing out of the first air outlet 102 is relatively low, and the effect of blowing directly on the human body is relatively weak. This method can shorten the response time of the wall-mounted air conditioner.

In some embodiments, the controller is integrated on the circuit board 610 , and the above-mentioned wall-mounted air conditioner also includes an electric control box 600 , which is disposed in the housing 100 ; the circuit board 610 is disposed in the electric control box 600 .

When the outdoor temperature is low, turning on the fresh air function of a wall-mounted air conditioner alone will lower the indoor temperature and cause discomfort to the human body. To solve this problem, in some embodiments of the present disclosure, a temperature sensor is provided to detect the outdoor ambient temperature. When the outdoor temperature difference is low, the wall-mounted air conditioner is prevented from turning on the fresh air function alone.

As shown in FIG36 , the temperature sensor is arranged outdoors and is configured to detect the outdoor ambient temperature; the temperature sensor is coupled to the controller. When the controller receives the instruction to start the fresh air, the controller receives the outdoor ambient temperature information transmitted by the temperature sensor and determines the received temperature information; if the outdoor ambient temperature is less than or equal to the first reference temperature, the controller controls the drive motor 500 to prohibit starting; if the outdoor ambient temperature is greater than the first reference temperature, the controller controls the drive motor 500 to start.

It should be noted that the outdoor ambient temperature will not affect the movement of the first air guide plate 230, the second air guide plate 240, the baffle 772 and the guide vane 781. When the outdoor ambient temperature is less than or equal to the first reference temperature and the controller controls the drive motor 500 to prohibit starting, if the first air guide plate 230, the second air guide plate 240, the baffle 772 and the guide vane 781 do not move, it is easy for the user to mistakenly believe that the air conditioner has a malfunction.

It should also be noted that although the temperature sensor detects the outdoor ambient temperature in real time, the controller determines the outdoor ambient temperature at certain intervals. Therefore, when the outdoor ambient temperature is less than or equal to the first reference temperature, the controller updates the received outdoor ambient temperature information at certain intervals and determines the received temperature information.

In some embodiments, when the controller receives a separate fresh air start instruction, when the outdoor ambient temperature is greater than the second reference temperature and less than or equal to the third reference temperature, the compressor is controlled not to work so that the refrigerant cannot flow between the indoor heat exchanger 200 and the outdoor heat exchanger. Since the outdoor ambient temperature here is usually within the range of the human body's suitable ambient temperature, there is no need to adjust the temperature of the outdoor fresh air.

It should be noted that the first reference temperature, the second reference temperature and the third reference temperature are affected by factors such as user preferences and the area where the user lives. It should also be noted that the second reference temperature is lower than the third reference temperature.

In other embodiments, when the outdoor ambient temperature is less than or equal to the second reference temperature, or when the outdoor ambient temperature is greater than the third reference temperature, the outdoor ambient temperature usually exceeds the suitable ambient temperature for the human body. The controller can prompt the user to choose to start the compressor so that the indoor heat exchanger 200 can perform heat exchange and temperature adjustment on the outdoor fresh air, thereby reducing the temperature difference between the outdoor fresh air and the indoor air, thereby reducing the discomfort caused to the human body when the outdoor fresh air is introduced into the room.

When the driving motor 500 stops running, the controller stops judging the outdoor environment temperature information transmitted by the receiving temperature sensor.

It should be noted that although the controller is in a state of receiving the outdoor ambient temperature information transmitted by the temperature sensor, the controller only processes the received outdoor ambient temperature information when it receives the command to turn on the fresh air to determine the relationship between the outdoor ambient temperature and the first reference temperature, the second reference temperature, and the third reference temperature. When the controller receives the command to turn off the fresh air, the controller stops processing the received outdoor ambient temperature information.

The following takes the first reference temperature of -15°C, the second reference temperature of 18°C, and the third reference temperature of 26°C as an example to describe in detail the working principle of the above-mentioned wall-mounted air conditioner.

When the controller receives the instruction to start fresh air separately, the controller controls the first motor to drive the first air guide plate 230 to move to the first set position, controls the first driving member 771 to drive the baffle 772 to open the second air inlet 710, and controls the second driving member 784 to drive the guide vane 781 to open the third air outlet 720. After the first air guide plate 230 moves to the first set position, the controller controls the second air guide plate 240 to move to the second set position. At the same time, the controller receives the outdoor ambient temperature information transmitted by the temperature sensor and determines the received temperature information. If the outdoor ambient temperature is less than or equal to -15°C, the controller controls the driving motor 500 to be prohibited from starting. If the outdoor ambient temperature is greater than -15°C, the controller controls the driving motor 500 to start.

If the outdoor ambient temperature is greater than or equal to 18°C and the outdoor ambient temperature is less than 26°C, the controller controls the compressor not to start. If the outdoor ambient temperature is less than 18°C or the outdoor ambient temperature is greater than or equal to 26°C, the controller can prompt the user whether to turn on the temperature adjustment function simultaneously.

When the wall-mounted air conditioner has been running with the fresh air function turned on for a period of time, the controller controls the drive motor 500 to stop rotating after receiving the command to turn off the fresh air; when the drive motor 500 stops rotating, the controller controls the first switch component 770 to close the second air inlet 710, controls the second switch component 780 to close the third air outlet 720, controls the second air guide plate 240 to return to its initial position, and stops receiving the outdoor ambient temperature information transmitted by the temperature sensor; after the second air guide plate 240 returns to its initial position, the controller controls the first air guide plate 230 to close the first air outlet 102.

The above-mentioned wall-mounted air conditioner is provided with a driving motor 500 to drive the fresh air fan 300 and the heat exchange fan 400 to operate at the same time, so as to save the driving motor 500 and simplify the overall structure; by providing a first switch component 770, the first switch component 770 is used to open or close the second air inlet 710 to control whether the outdoor fresh air is introduced into the fresh air volute 700; by providing a second switch component 780, the second switch component 780 is used to open or close the third air outlet 720 to control whether the outdoor fresh air in the fresh air volute 700 flows into the room; by providing a first air guide plate 230, the first air guide plate 230 is used to open or close the first air outlet 102 to control whether the airflow inside the housing 100 flows into the room; By setting the rotation angle of the first air guide plate 230, the airflow flowing from the first air outlet 102 to the room can be prevented from directly blowing on the human body; by setting the second air guide plate 240, on the one hand, the blocking effect on the airflow can be increased, the air output of the first air outlet 102 can be reduced, and the airflow noise can be reduced; on the other hand, the airflow inside the shell 100 can be guided to guide the airflow to the first air guide plate 230, so that after the airflow passes through the first air guide plate 230, it can avoid directly blowing on the human body when it flows from the first air outlet 102 to the room; by setting a controller, the controller is used to control the movement of the first air guide plate 230, the second air guide plate 240, the first switch assembly 770 and the second switch assembly 780 to avoid the operation of the heat exchange fan 400 when the fresh air function is turned on alone, causing direct blowing of air conditioning wind and loud noise.

Another implementation of the wall-mounted air conditioner disclosed herein is shown in Figures 38 to 51. In some embodiments of the present disclosure, the wall-mounted air conditioner includes an indoor unit and an outdoor unit, wherein the indoor unit is arranged indoors, and the outdoor unit is arranged outdoors, and the indoor unit includes a shell 100, an indoor heat exchanger 200, a heat exchange fan 400, a fresh air module and a drive motor 500.

As shown in Figure 38, the shell 100 is configured to form the overall appearance of the air-conditioning indoor unit, and the shell 100 has a top and a bottom, the top of the shell 100 and the bottom of the shell 100 are opposite ends, and the height direction of the shell 100 is from the top of the shell 100 to the bottom of the shell 100; the left side of the shell 100 and the right side of the shell 100 are opposite sides, and the length direction of the shell 100 is from the left side of the shell 100 to the right side of the shell 100; the front side of the shell 100 and the back side of the shell 100 are opposite sides, and the direction from the front side of the shell 100 to the back side of the shell 100 is the thickness direction of the shell 100; wherein, the shell 100 is set at the top of the room or the upper space of the room, the front side of the shell 100 is set toward the user, and the back side of the shell 100 is set toward the wall.

A heat exchange air duct is defined inside the housing 100. The housing 100 is formed with a first air inlet 101 and a first air outlet 102. The first air inlet 101 and the first air outlet 102 are respectively connected to the heat exchange air duct. The first air inlet 101 is located at the top of the housing 100, and the first air outlet 102 is opened at the front side of the housing 100 and arranged near the bottom of the housing 100, that is, the first air outlet 102 is located at the front lower side of the housing 100. A first grille is provided at the first air inlet 101 to prevent debris from entering the interior of the housing 100; the first air outlet 102 is located at the front lower side of the housing 100, and a wind guide plate 220 is provided at the first air outlet 102. The wind guide plate 220 is connected to the housing 100 in an openable and closable manner to open or close the first air outlet 102.

As shown in FIG39 , the indoor heat exchanger 200 is installed in the housing 100 and is located in the heat exchange air duct, and is configured to heat the indoor air in the heat exchange air duct to form air-conditioning air to meet the cooling or heating needs of the user; it should be noted that the indoor heat exchanger 200 is arranged close to the first air inlet 101. It should also be noted that the air-conditioning air can be cold air, hot air, or even normal temperature air.

When air passes through the indoor heat exchanger 200 for heat exchange, condensed water is generated. A water collecting pan is usually provided under the indoor heat exchanger, and the condensed water drips into the water collecting pan under the action of gravity. The water collecting pan is connected to a drain pipe 280 to discharge the condensed water into the shell 100 in time to prevent the condensed water from accumulating in the water collecting pan and causing damage to the components installed inside the shell 100.

The indoor heat exchanger 200 performs heat exchange through the gas-liquid phase change of the refrigerant. The indoor heat exchanger 200 is connected to an online pipe 270. The indoor heat exchanger 200 is connected to the outdoor heat exchanger of the outdoor unit through the online pipe 270. The refrigerant flows in the online pipe 270 and changes from gas to liquid phase, thereby achieving heat exchange for the air.

As shown in Figures 40 and 44-46, the fresh air module is configured to introduce outdoor fresh air into the room; the fresh air module includes a fresh air volute 700 and a fresh air fan 300, the fresh air volute 700 and the heat exchange fan 400 are distributed along the length direction of the shell 100, a fresh air duct is defined in the fresh air volute 700, the fresh air fan 300 is installed in the fresh air duct, the fresh air duct is provided with a second air inlet 710 and a third air outlet 720, the second air inlet 710 is connected to the outdoors, the shell 100 is provided with a second air outlet 103, the second air outlet 103 is connected to the third air outlet 720, so that the outdoor fresh air flows from the second air outlet 103 to the indoor.

Through the operation of the fresh air fan 300, outdoor fresh air is introduced into the fresh air duct from the second air inlet 710, passes through the third air outlet 720, and flows into the room from the second air outlet 103.

A filter assembly 800 is provided in the fresh air duct to purify the outdoor fresh air flowing into the room.

In some embodiments, the filter assembly 800 includes a purification frame and a filter. The filter is disposed on the purification frame. The filter is configured to filter and purify outdoor fresh air to prevent impurities and flocs mixed in the outdoor fresh air from entering the room.

In some embodiments, the fresh air volute 700 is installed on the shell 100, and the fresh air volute 700 is connected to the shell 100 by fasteners such as screws or screws. In order to prevent the vibration generated by the rotation of the fresh air fan 300 from being transmitted to the shell 100 and other components, shock-absorbing rubber is provided between the fasteners and the shell 100 to buffer and absorb vibration.

As shown in Fig. 44 to Fig. 46, the fresh air volute 700 includes a first split shell 730 and a second split shell 740, the first split shell 730 and the second split shell 740 are distributed along the length direction of the housing 100, and the first split shell 730 and the second split shell 740 are connected to each other, the first split shell 730 and the second split shell 740 jointly define a first fresh air cavity 750, and the second split shell 740 defines a second fresh air cavity 760 inside; the second fresh air cavity 760 and the first fresh air cavity 750 jointly form a fresh air duct. Among them, the fresh air fan 300 is installed in the second fresh air cavity 760; the filter assembly 800 is arranged in the first fresh air cavity 750.

Through the operation of the fresh air fan 300, the outdoor fresh air is introduced into the first fresh air chamber 750 from the second air inlet 710, enters the second fresh air chamber 760 after being filtered by the filter assembly 800, and then passes through the third air outlet 720 and flows into the room from the second air outlet 103. After being filtered, the outdoor fresh air enters the second fresh air chamber 760 and contacts the fresh air fan 300, which can prevent impurities, dust, etc. in the outdoor fresh air from accumulating on the surface of the fresh air fan 300 and affecting the operation of the fresh air fan 300.

Since the fresh air fan 300 is disposed in the second fresh air cavity 760 , and the second fresh air cavity 760 is formed in the second split shell 740 , the second split shell 740 is usually designed as a split structure to facilitate the installation of the fresh air fan 300 .

The second split shell 740 includes a first half shell 741 and a second half shell 742; the first half shell 741 and the second half shell 742 are arranged opposite to each other and jointly form a second fresh air cavity 760; the first split shell 730 and the second half shell 742 are arranged opposite to each other on a side away from the first half shell 741 to jointly form a first fresh air cavity 750.

In some embodiments, the first half shell 741 and the second half shell 742 are spliced with each other. The connection between the first half shell 741 and the second half shell 742 also includes but is not limited to: snap connection, screw connection, bonding, welding, riveting, etc.

The second half shell 742 is provided with a second grille 7421, which is located at the connection point between the first fresh air chamber 750 and the second fresh air chamber 760, so that the first fresh air chamber 750 and the second fresh air chamber 760 are connected to each other. The second air inlet 710 is provided in the first fresh air chamber 750, the third air outlet 720 is provided in the second fresh air chamber 760, and the filter assembly 800 is provided in the first fresh air chamber 750, so that the filter assembly 800 purifies the outdoor fresh air entering the first fresh air chamber 750 through the second air inlet 710, and the air in the first fresh air chamber 750 that has been purified by the filter assembly 800 enters the second fresh air chamber 760 through the second grille 7421, and flows into the room through the second air outlet 103 through the third air outlet 720.

It should be noted that the first fresh air chamber 750 is provided with a socket so that the filter assembly 800 can be extended into the first fresh air chamber 750 through the socket, thereby realizing the installation of the filter assembly 800. When the filter assembly 800 needs to be removed, the filter assembly 800 can be pulled out from the socket. By detachably installing the filter assembly 800 in the first fresh air chamber 750, it is convenient for users to disassemble, clean and replace the filter by themselves. The disassembly and installation method of the filter assembly 800 is simple and easy to operate.

It should also be noted that in order to install the fresh air volute 700, the fresh air fan 300 and the drive motor 500, as shown in Figure 7, the shell 100 is provided with a first inner cavity 104, a third inner cavity 105 and a second inner cavity 106, and the third inner cavity 105, the first inner cavity 104 and the second inner cavity 106 are distributed along the length direction of the shell 100; the first inner cavity 104 is configured to install the heat exchange fan 400; the third inner cavity 105 is configured to install the drive motor 500; the second inner cavity 106 is configured to install the fresh air module.

As shown in Figures 5 and 9, the fresh air fan 300 is a centrifugal fan, and the fresh air fan 300 is configured to introduce indoor fresh air into the room; the fresh air fan 300 is installed in the second fresh air chamber 760, and through the operation of the fresh air fan 300, the outdoor fresh air is introduced into the second fresh air chamber 760 from the second air inlet 710, enters the second fresh air chamber 760 after purification by the filter assembly 800, and flows into the room from the third air outlet 720 and the second air outlet 103.

In the related art, in some wall-mounted air conditioners, the fresh air fan 300 and the heat exchange fan 400 are each connected to a motor, and the fresh air fan 300 and the heat exchange fan 400 operate independently under the driving action of the motors connected to them. In some embodiments of the present disclosure, as shown in Figures 12 and 13, the heat exchange fan 400 and the fresh air fan 300 are driven by the same drive motor 500, so that the heat exchange fan 400 and the fresh air fan 300 operate synchronously, and the heat exchange fan 400 and the fresh air fan 300 are arranged with a common rotation axis, thereby saving a motor, reducing production costs, and improving assembly efficiency. Among them, the drive motor 500 can be a single-axis motor or a double-axis motor.

When the driving motor 500 is a single-axis motor, the driving motor 500 includes a motor shaft, the motor shaft of the driving motor 500 is connected to the heat exchange fan 400, and the heat exchange fan 400 is connected to the fresh air fan 300, so that the driving motor 500 can drive the heat exchange fan 400 and the fresh air fan 300 to rotate synchronously.

When the driving motor 500 is a dual-axis motor, the driving motor 500 includes a first motor shaft 501 and a second motor shaft 502. The first motor shaft 501 and the second motor shaft 502 are coaxially arranged. The first motor shaft 501 is connected to the heat exchange fan 400, and the second motor shaft 502 is connected to the fresh air fan 300, so that the driving motor 500 can simultaneously drive the heat exchange fan 400 and the fresh air fan 300 to rotate synchronously.

It should be noted that the first half shell 741 is provided with an axial hole 210, the opening of the axial hole 210 extends along the length direction of the shell 100, and the axial hole 210 is configured to connect the second fresh air chamber 760 with the outside of the fresh air volute 700, so as to facilitate the connection between the second motor shaft 502 and the fresh air fan 300 or the connection between the heat exchange fan 400 and the fresh air fan 300.

In some embodiments of the present disclosure, the driving motor 500 is taken as a single-axis motor as an example to describe in detail the connection method between the driving motor 500 and the heat exchange fan 400 and the fresh air fan 300.

As shown in FIG42 , a sleeve 401 is provided at one end of the heat exchange fan 400 connected to the drive motor 500. The sleeve 401 is provided with a connecting hole. The first motor shaft 501 extends into the connecting hole to connect the drive motor 500 to the heat exchange fan 400. The motor shaft of the drive motor 500 is extended into the connecting hole to facilitate the connection between the heat exchange fan 400 and the drive motor 500. It should be noted that the rotation axis of the heat exchange fan 400 is aligned with the rotation axis of the drive motor 500. The motor shafts of the driving motor 500 are coaxially arranged. It should also be noted that the heat exchange fan 400 is a cross-flow fan.

In some embodiments, the motor shaft of the driving motor 500 is provided with a fourth positioning portion, and the fourth positioning portion is configured to limit the distance that the motor shaft of the driving motor 500 extends into the connecting hole. When the fourth positioning portion contacts the side wall of the heat exchange fan 400 facing the driving motor 500, the motor shaft of the driving motor 500 and the heat exchange fan 400 are installed in place.

As shown in Figure 43, a first connecting shaft 402 is provided in the end of the heat exchange fan 400 away from the driving motor 500. The first connecting shaft 402 passes through the shaft hole 210 and extends into the second fresh air chamber 760 to connect with the fresh air fan 300, so that the fresh air fan 300 and the heat exchange fan 400 are connected to each other.

Since the motor shaft of the driving motor 500 is connected to the heat exchange fan 400, the driving motor 500 drives the heat exchange fan 400 to rotate through the motor shaft, and the first connecting shaft 402 of the heat exchange fan 400 rotates synchronously with the heat exchange fan 400; and the first connecting shaft 402 is connected to the fresh air fan 300, so that the fresh air fan 300 and the heat exchange fan 400 rotate synchronously.

In order to support the rotation of the first connecting shaft 402 , the first connecting shaft 402 is connected to a bearing component 120 , and the bearing component 120 is configured to support the rotation of the heat exchange fan 400 , thereby increasing the stability of the heat exchange fan 400 and the fresh air fan 300 during operation.

In some embodiments, the second inner cavity 106 is separated from the first inner cavity 104 by a first partition, and the first inner cavity 104 is separated from the third inner cavity 105 by a second partition. The first partition and the second partition can also be used to axially limit the heat exchange fan 400, thereby increasing the reliability of the installation of the heat exchange fan 400.

As shown in FIG. 43 and FIG. 51 , the housing 100 is further provided with a bearing seat 130 configured to install the bearing component 120 . The bearing seat 130 is provided with a through cavity extending along the length direction of the housing 100 , and the bearing component 120 is disposed in the through cavity.

In some embodiments, the bearing seat 130 is mounted on the second partition portion.

In some embodiments, the bearing seat 130 is provided with a clamping portion, the second partition portion is provided with a connecting port, and the clamping portion is arranged in the connecting port so that the bearing seat 130 is fixedly connected to the second partition portion, thereby achieving the installation and fixation of the bearing seat 130.

In some embodiments, as shown in FIG51 , the bearing component 120 includes a bearing sleeve 121 and a bearing ball 122, the bearing ball 122 is installed in the bearing sleeve 121, and the first connecting shaft 402 is arranged through the bearing ball 122. The bearing sleeve 121 abuts against the inner wall of the bearing seat 130 so that the bearing component 120 is installed in the bearing seat 130. It should be noted that the bearing sleeve 121 is made of a soft material such as rubber or silicone.

In other embodiments, the bearing sleeve 121 is further provided with a reinforcement portion 123, and a connecting cavity is provided inside the reinforcement portion 123 for the first connecting shaft 402 to pass through. The reinforcement portion 123 is configured to increase the contact area between the bearing sleeve 121 and the first connecting shaft 402, thereby increasing the supporting effect of the bearing component 120 on the first connecting shaft 402.

Since the driving motor 500 drives the heat exchange fan 400 and the fresh air fan 300 to operate simultaneously, the fresh air fan 300 cannot stop working alone, resulting in the fresh air function cannot be turned off when the air conditioner indoor unit is working. Therefore, the above-mentioned wall-mounted air conditioner is provided with a first switch component 770 at the second air inlet 710, and the second air inlet 710 is opened or closed by the first switch component 770 to control whether outdoor fresh air is introduced into the first fresh air chamber 750, thereby controlling the opening and closing of the fresh air function.

When the wall-mounted air conditioner is working, when it is necessary to turn off the fresh air function, closing the second air inlet 710 can prevent the outdoor fresh air from being introduced into the first fresh air chamber 750, thereby preventing the outdoor fresh air from flowing into the room from the third air outlet 720; when it is necessary to turn on the fresh air function, opening the second air inlet 710 can allow the outdoor fresh air to be introduced into the first fresh air chamber 750 from the second air inlet 710, thereby allowing the outdoor fresh air to flow into the room from the third air outlet 720.

It should be noted that closing the second air inlet 710 by the first switch assembly 770 can also prevent fresh air from flowing back into the room when the air-conditioning indoor unit is turned off, thereby reducing indoor air noise and wind feeling when the fresh air function is not turned on, and improving the user experience.

Since the fresh air fan 300 and the heat exchange fan 400 are driven by the same driving motor 500, the running speed of the fresh air fan 300 is the same as that of the heat exchange fan 400, and the fresh air fan 300 and the heat exchange fan 400 are arranged on the same rotation axis. In a conventional wall-mounted air conditioner, since the fresh air fan 300 and the heat exchange fan 400 are respectively connected to motors, the fresh air fan 300 and the heat exchange fan 400 are operated separately, and the running speed of the fresh air fan 300 is faster than that of the heat exchange fan 400. Therefore, when the running speed of the fresh air fan 300 is the same as that of the heat exchange fan 400, the ability of the fresh air fan 300 to introduce fresh air is reduced.

When outdoor fresh air enters the first fresh air cavity 750 from the second air inlet 710, the contact between the outdoor fresh air and the inner wall of the first fresh air cavity 750 will generate a large fluid resistance, thereby hindering the outdoor fresh air from entering the first fresh air cavity 750; in some embodiments of the present disclosure, the air inlet direction of the outdoor fresh air entering the first fresh air cavity 750 is changed to reduce the fluid resistance generated when the outdoor fresh air enters the first fresh air cavity 750, thereby increasing the amount of fresh air entering the first fresh air cavity 750.

As shown in FIG. 49 , the opening direction of the second air inlet 710 is set toward the bottom of the shell 100, and the center line 711 of the second air inlet 710 forms a first angle α with the height direction of the shell 100. By forming the first angle α between the center line 711 of the second air inlet 710 and the height direction of the shell 100, the center line 711 of the second air inlet 710 is tilted along the height direction of the shell 100, thereby reducing the fluid resistance after the outdoor fresh air enters the first fresh air chamber 750, so that the outdoor fresh air can be quickly sucked into the fresh air fan 300, thereby increasing The air extraction efficiency of the fresh air fan 300.

In some embodiments, the first angle α satisfies the relationship: 0°＜α≤30°. When the first angle α is 0°, when the outdoor fresh air enters the first fresh air cavity 750 from the second air inlet 710, the fluid resistance generated is relatively large; when the first angle α is 30°, when the outdoor fresh air enters the first fresh air cavity 750 from the second air inlet 710, the fluid resistance generated is relatively small, and the amount of fresh air entering the first fresh air cavity 750 increases.

In some embodiments, the fresh air volute 700 is connected to a fresh air duct 900 , which is disposed at the second air inlet 710 . The fresh air duct 900 is communicated with the outside to introduce outdoor fresh air into the first fresh air cavity 750 .

As shown in FIG50 , a plane perpendicular to the center line 711 of the second air inlet 710 is defined as the first plane 290; the first plane 290 and the horizontal plane 250 define a second angle β, and the second angle β satisfies the relationship: 0°＜β≤30°. It should be noted that the second angle β is the same as the first angle α.

Further, as shown in Figure 47, a reserved space 260 is defined between the bottom of the fresh air volute 700 and the bottom inner wall of the shell 100. Pipes such as the fresh air duct 900, the online pipe 270 and the drain pipe 280 are usually routed through the reserved space 260 so that the fresh air duct 900, the online pipe 270 and the drain pipe 280 can pass through the interior of the shell 100. In a conventional wall-mounted air conditioner, the height of the rotation axis of the fresh air fan 300 is usually higher than the height of the rotation axis of the heat exchange fan 400. When the fresh air fan 300 and the heat exchange fan 400 are set with the same rotation axis, the position of the fresh air fan 300 moves downward, causing the fresh air volute 700 to move downward as well. The reserved space 260 below the fresh air volute 700 becomes smaller, and the pipe routing space for pipelines such as the fresh air duct 900, the online pipe 270 and the drainage pipe 280 is narrow, which is not conducive to the pipe routing of pipelines such as the fresh air duct 900, the online pipe 270 and the drainage pipe 280.

Since the reserved space 260 is defined by the outer wall of the fresh air volute 700 with the second air inlet 710 and the inner wall of the bottom of the shell 100, and the reserved space 260 is arranged close to the rear side of the shell 100, in some embodiments of the present disclosure, the outer wall of the fresh air volute 700 with the second air inlet 710 is inclined along the thickness direction of the shell 100 from the front side of the shell 100 to the rear side of the shell 100 toward the top of the shell 100 to increase the volume of the reserved space 260, so that the fresh air duct 900, drain pipe 280, online pipe 270 and other pipelines inside the shell 100 can pass through the reserved space 260 and pass through the interior of the shell 100.

By making the outer wall of the fresh air volute 700 with the second air inlet 710 tilted along the thickness direction of the shell 100 from the front side of the shell 100 to the rear side of the shell 100 toward the top of the shell 100, the distance between the outer wall of the fresh air volute 700 toward the bottom of the shell 100 and the inner wall of the bottom of the shell 100 can be gradually increased along the thickness direction of the shell 100 from the front side of the shell 100 to the rear side of the shell 100, thereby increasing the volume of the reserved space 260, and further facilitating the arrangement of pipelines such as the fresh air duct 900, the drainage pipe 280 and the online pipe 270.

It should be noted that the outer wall of the fresh air volute 700 with the second air inlet 710 is inclined along the thickness direction of the shell 100 from the front side of the shell 100 to the rear side of the shell 100 toward the top of the shell 100. On the one hand, this can be achieved by adjusting the angle at which the fresh air volute 700 is installed to the shell 100. On the other hand, the outer wall of the fresh air volute 700 with the second air inlet 710 can be designed as an inclined structure without changing the angle at which the fresh air volute 700 is installed to the shell 100.

It should also be noted that the center line 711 of the second air inlet 710 can be set perpendicular to the plane where the outer wall of the fresh air volute 700 opens the second air inlet 710 is located, or it can be set at an angle to the plane where the outer wall of the fresh air volute 700 opens the second air inlet 710 is located.

In some embodiments, the fresh air volute 700 needs to be rotated at a certain angle for installation, and the center line 711 of the second air inlet 710 is perpendicular to the outer wall of the fresh air volute 700 that opens the second air inlet 710. At this time, after the fresh air volute 700 is rotated in the vertical direction until the outer wall of the fresh air volute 700 that opens the second air inlet 710 is tilted from the front side of the shell 100 to the rear side of the shell 100 in the thickness direction of the shell 100 toward the top of the shell 100, the opening direction of the second air inlet 710 will also be tilted accordingly, and the center line 711 of the second air inlet 710 will form a first angle α with the height direction of the shell 100.

It can be considered that the first angle α is generated by rotating the fresh air volute 700 in a vertical plane. When the fresh air volute 700 rotates along the vertical plane inside the housing 100, one of the corners at the top of the fresh air volute 700 may interfere with the inner wall of the housing 100, causing the fresh air volute 700 to be unable to rotate. When one of the corners at the top of the fresh air volute 700 interferes with the inner wall of the housing 100, the first angle α is the maximum value of its value range.

When the first angle α is 0°, the opening direction of the second air inlet 710 is set vertically downward, and the outer wall of the fresh air volute 700 that opens the second air inlet 710 is set in the horizontal direction. At the same time, the center line 711 of the second air inlet 710 is set perpendicular to the outer wall of the fresh air volute 700 that opens the second air inlet 710. At this time, when the outdoor fresh air enters the first fresh air cavity 750 from the second air inlet 710, the contact between the outdoor fresh air and the inner wall of the first fresh air cavity 750 will produce a large fluid resistance, which hinders the outdoor fresh air from entering the first fresh air cavity 750.

When one of the corners at the top of the fresh air volute 700 interferes with the inner wall of the shell 100, the first angle α is the maximum value of its value range. It should be noted that at this time, the degree of the first angle α may be 30°, or may be greater than 30°, or may be less than 30°. When the first angle α satisfies the relationship: 0°＜α≤30°, the fluid resistance generated when the outdoor fresh air enters the first fresh air cavity 750 from the second air inlet 710 is small. When the degree of the first angle α is 30°, it does not mean that one of the corners at the top of the fresh air volute 700 interferes with the inner wall of the shell 100.

In other embodiments, the fresh air volute 700 does not need to change the installation angle, and the center line 711 of the second air inlet 710 is set at an angle to the outer wall of the fresh air volute 700 that opens the second air inlet 710. At this time, if the outer wall of the fresh air volute 700 that opens the second air inlet 710 is set in the horizontal direction, the center line 711 of the second air inlet 710 will also form a first angle α with the height direction of the shell 100.

At this time, although the air intake efficiency of the fresh air fan 300 can be increased, due to the reduction of the reserved space 260, it is not convenient for the fresh air duct 900, the online pipe 270, the drainage pipe 280 and other pipelines to pass through. Therefore, it is necessary to open the outer wall of the second air inlet 710 of the fresh air volute 700 along the thickness direction of the shell 100 from the front side of the shell 100 to the rear side of the shell 100 toward the top of the shell 100.

It should be noted that the value range of the first angle α will change with the inclination angle of the outer wall of the fresh air volute 700 with the second air inlet 710 opening along the thickness direction of the shell 100 from the front side of the shell 100 to the rear side of the shell 100 towards the top of the shell 100.

The above-mentioned wall-mounted air conditioner also includes an electric control box 600, which is arranged in the shell 100; a circuit board 610 is arranged in the electric control box 600, and the circuit board 610 is coupled to the drive motor 500 through a line; the electric control board is connected to the indoor heat exchanger 200 through a first line, and the end of the first line close to the circuit board 610 is higher than the end of the first line close to the indoor heat exchanger 200.

The above-mentioned wall-mounted air conditioner forms a first angle α between the center line 711 of the second air inlet 710 and the height direction of the housing 100, and the first angle α satisfies the relationship: 0°＜α≤30°, so that the center line 711 of the second air inlet 710 is inclined along the height direction of the housing 100, thereby reducing the fluid resistance after the outdoor fresh air enters the first fresh air cavity 750, so that the outdoor fresh air can be quickly sucked into the fresh air fan 300, thereby increasing the air intake efficiency of the fresh air fan 300; by making the fresh air volute 70 The outer wall where the second air inlet 710 is provided is inclined along the thickness direction of the shell 100 from the front side of the shell 100 to the rear side of the shell 100 toward the top of the shell 100, so that the distance between the outer wall of the fresh air volute 700 facing the bottom of the shell 100 and the inner wall of the bottom of the shell 100 gradually increases along the thickness direction of the shell 100 from the front side of the shell 100 to the rear side of the shell 100, thereby increasing the volume of the reserved space 260, and further facilitating the arrangement of pipelines such as the fresh air duct 900, the drainage pipe 280 and the online pipe 270.

Another implementation of the wall-mounted air conditioner disclosed herein is shown in FIGS. 52 to 71 . In some embodiments of the present disclosure, the wall-mounted air conditioner includes a housing 100 , an indoor heat exchanger 200 , a heat exchange fan 400 , a fresh air module and a drive motor 500 .

As shown in Figure 52, the shell 100 is configured to form the overall appearance of the air-conditioning indoor unit, and the shell 100 has a top and a bottom, the top of the shell 100 and the bottom of the shell 100 are opposite ends, and the height direction of the shell 100 is from the top of the shell 100 to the bottom of the shell 100; the left side of the shell 100 and the right side of the shell 100 are opposite sides, and the length direction of the shell 100 is from the left side of the shell 100 to the right side of the shell 100; the front side of the shell 100 and the back side of the shell 100 are opposite sides, and the direction from the front side of the shell 100 to the back side of the shell 100 is the thickness direction of the shell 100; wherein, the shell 100 is set at the top of the room or the upper space of the room, the front side of the shell 100 is set toward the user, and the back side of the shell 100 is set toward the wall.

A heat exchange air duct is defined inside the housing 100. The housing 100 is formed with a first air inlet 101 and a first air outlet 102. The first air inlet 101 and the first air outlet 102 are respectively connected to the heat exchange air duct. The first air inlet 101 is located at the top of the housing 100, and the first air outlet 102 is opened at the front side of the housing 100 and arranged near the bottom of the housing 100, that is, the first air outlet 102 is located at the front lower side of the housing 100. A first grille is provided at the first air inlet 101 to prevent debris from entering the interior of the housing 100; the first air outlet 102 is located at the front lower side of the housing 100, and a wind guide plate 220 is provided at the first air outlet 102. The wind guide plate 220 is connected to the housing 100 in an openable and closable manner to open or close the first air outlet 102.

As shown in FIG53 , the indoor heat exchanger 200 is installed in the housing 100 and is located in the heat exchange air duct, and is configured to heat the indoor air in the heat exchange air duct to form air-conditioning air to meet the cooling or heating needs of the user; it should be noted that the indoor heat exchanger 200 is arranged close to the first air inlet 101. It should also be noted that the air-conditioning air can be cold air, hot air, or even normal temperature air.

As shown in FIG. 54 , the heat exchange fan 400 is installed in the housing 100 and is located in the heat exchange air duct, and the heat exchange fan 400 is located below the indoor heat exchanger 200. The axial direction of the heat exchange fan 400 extends along the length direction of the housing 100. The heat exchange fan 400 is operated to introduce indoor air into the heat exchange air duct, and after heat exchange in the indoor heat exchanger 200 to form conditioned air, the conditioned air is flowed into the room from the first air outlet 102. It should be noted that the heat exchange fan 400 is a cross-flow fan.

As shown in Figures 53, 57-59, the fresh air module is configured to introduce outdoor fresh air into the room; the fresh air module includes a fresh air volute 700 and a fresh air fan 300, the fresh air volute 700 and the heat exchange fan 400 are distributed along the length direction of the housing 100, a fresh air duct is defined in the fresh air volute 700, the fresh air fan 300 is installed in the fresh air duct, the fresh air duct is provided with a second air inlet 710 and a third air outlet 720, the second air inlet 710 is connected to the outside, and the third air outlet 720 is connected to the second air outlet 103. It should be noted that the housing 100 is also provided with a second air outlet 103, and the second air outlet 103 is connected to the third air outlet 720, so that the outdoor fresh air flows from the second air outlet 103 to the room.

Through the operation of the fresh air fan 300, outdoor fresh air is introduced into the fresh air duct from the second air inlet 710, passes through the third air outlet 720, and flows into the room from the second air outlet 103.

A filter assembly 800 is provided in the fresh air duct to purify the outdoor fresh air flowing into the room. The purification frame and the filter net are arranged on the purification frame, and the filter net is configured to filter and purify the outdoor fresh air to prevent the impurities and flocs mixed in the outdoor fresh air from entering the room.

In some embodiments, the fresh air volute 700 is installed on the shell 100, and the fresh air volute 700 is connected to the shell 100 by fasteners such as screws or screws. In order to prevent the vibration generated by the rotation of the fresh air fan 300 from being transmitted to the shell 100 and other components, shock-absorbing rubber is provided between the fasteners and the shell 100 to buffer and absorb vibration.

As shown in Figures 57 to 59, the fresh air volute 700 includes a first split shell 730 and a second split shell 740, which are distributed along the length direction of the housing 100, and the first split shell 730 and the second split shell 740 are connected to each other, and the first split shell 730 and the second split shell 740 jointly define a first fresh air cavity 750, and the second split shell 740 defines a second fresh air cavity 760 inside; the second fresh air cavity 760 and the first fresh air cavity 750 jointly form a fresh air duct. The fresh air fan 300 is installed in the second fresh air cavity 760; the filter assembly 800 is arranged in the first fresh air cavity 750.

The second split shell 740 is usually designed as a split structure to facilitate the installation of the fresh air fan 300; the second split shell 740 includes a first half shell 741 and a second half shell 742; the first half shell 741 and the second half shell 742 are arranged opposite to each other and jointly form a second fresh air cavity 760; the first split shell 730 and the second half shell 742 are arranged opposite to each other on the side away from the first half shell 741 to jointly form a first fresh air cavity 750.

The second half shell 742 is provided with a second grille 7421, which is located at the connection point between the first fresh air chamber 750 and the second fresh air chamber 760, so that the first fresh air chamber 750 and the second fresh air chamber 760 are connected to each other. The second air inlet 710 is provided in the first fresh air chamber 750, the third air outlet 720 is provided in the second fresh air chamber 760, and the filter assembly 800 is provided in the first fresh air chamber 750, so that the filter assembly 800 purifies the outdoor fresh air entering the first fresh air chamber 750 through the second air inlet 710, and the air in the first fresh air chamber 750 that has been purified by the filter assembly 800 enters the second fresh air chamber 760 through the second grille 7421, and flows into the room through the second air outlet 103 through the third air outlet 720.

It should be noted that the first fresh air chamber 750 is provided with a socket so that the filter assembly 800 can be extended into the first fresh air chamber 750 through the socket, thereby realizing the installation of the filter assembly 800. When the filter assembly 800 needs to be removed, the filter assembly 800 can be pulled out from the socket. By detachably installing the filter assembly 800 in the first fresh air chamber 750, it is convenient for users to disassemble, clean and replace the filter by themselves. The disassembly and installation method of the filter assembly 800 is simple and easy to operate.

As shown in Figure 60, the fresh air fan 300 is a centrifugal fan, and the fresh air fan 300 is configured to introduce indoor fresh air into the room; the fresh air fan 300 is installed in the second fresh air chamber 760, and through the operation of the fresh air fan 300, the outdoor fresh air is introduced into the second fresh air chamber 760 from the second air inlet 710, enters the second fresh air chamber 760 after purification by the filter assembly 800, and flows into the room from the third air outlet 720 and the second air outlet 103.

In the related art, the fresh air fan 300 and the heat exchange fan 400 are each connected to a motor, and the fresh air fan 300 and the heat exchange fan 400 operate independently under the driving action of the motors connected to them. In some embodiments of the present disclosure, as shown in Figures 10 and 12, the heat exchange fan 400 and the fresh air fan 300 are driven by the same drive motor 500 to save a motor, reduce production costs, and improve assembly efficiency. The heat exchange fan 400 and the fresh air fan 300 operate synchronously, and the heat exchange fan 400 and the fresh air fan 300 are arranged with a common rotation axis; wherein the drive motor 500 can be a single-axis motor or a double-axis motor.

When the driving motor 500 is a single-axis motor, the driving motor 500 includes a motor shaft, the motor shaft of the driving motor 500 is connected to the heat exchange fan 400, and the heat exchange fan 400 is connected to the fresh air fan 300, so that the driving motor 500 can drive the heat exchange fan 400 and the fresh air fan 300 to rotate synchronously.

The driving motor 500 is located at one end of the heat exchange fan 400 along the length direction of the housing 100. The heat exchange fan 400 is provided with a first connecting shaft 402, which is located at one end of the heat exchange fan 400 along the length direction of the housing 100 close to the fresh air fan 300. The heat exchange fan 400 is provided with a shaft sleeve at the other end along the length direction of the housing 100. The shaft sleeve is provided with a mounting hole, and the motor shaft of the driving motor 500 extends into the mounting hole so that the driving motor 500 and the heat exchange fan 400 are connected to each other. The fresh air fan 300 is provided with a second connecting shaft 301, which runs through the fresh air fan 300 along the length direction of the housing 100; the second connecting shaft 301 is connected to the first connecting shaft 402, so that the fresh air fan 300 and the heat exchange fan 400 are connected to each other, so that the driving motor 500 can drive the fresh air fan 300 to operate through the heat exchange fan 400.

In some embodiments, as shown in FIG60 , a buffer 302 is provided in the middle portion of the fresh air fan 300, and the second connecting shaft 301 is arranged through the buffer 302. The buffer 302 is provided to absorb the vibration noise generated after the fresh air fan 300 is connected to the heat exchange fan 400. It should be noted that the buffer 302 is usually made of a soft material such as rubber or silicone.

In another embodiment, the second connecting shaft 301 is a metal shaft, and the second connecting shaft 301 and the fresh air fan 300 are integrally injection molded.

When the driving motor 500 is a dual-axis motor, the driving motor 500 includes a first motor shaft 501 and a second motor shaft 502. The first motor shaft 501 and the second motor shaft 502 are coaxially arranged. The first motor shaft 501 is connected to the heat exchange fan 400, and the second motor shaft 502 is connected to the fresh air fan 300, so that the driving motor 500 can simultaneously drive the heat exchange fan 400 and the fresh air fan 300 to rotate synchronously.

The driving motor 500 is located between the heat exchange fan 400 and the fresh air fan 300 along the length direction of the shell 100, the first motor shaft 501 is connected to the heat exchange fan 400, and the second motor shaft 502 is connected to the second connecting shaft 301, so that the driving motor 500 drives the heat exchange fan 400 and the fresh air fan 300 to rotate at the same time.

It should be noted that the first half shell 741 is provided with an axial hole 210, the opening of the axial hole 210 extends along the length direction of the shell 100, and the axial hole 210 is configured to connect the second fresh air chamber 760 with the outside of the fresh air volute 700, so that the second connecting shaft 301 can pass through the axial hole 210 and be connected to the first connecting shaft 402 of the heat exchange fan 400 or the second motor shaft 502 of the drive motor 500.

It should also be noted that in order to install the fresh air volute 700, the fresh air fan 300 and the drive motor 500, as shown in Figure 5, the shell 100 is provided with a first inner cavity 104, a third inner cavity 105 and a second inner cavity 106, and the third inner cavity 105, the first inner cavity 104 and the second inner cavity 106 are distributed along the length direction of the shell 100; the first inner cavity 104 is configured to install the heat exchange fan 400; the third inner cavity 105 is configured to install the drive motor 500; the second inner cavity 106 is configured to install the fresh air module.

In some embodiments, the second inner cavity 106 is separated from the first inner cavity 104 by a first partition, and the first inner cavity 104 is separated from the third inner cavity 105 by a second partition. The first partition and the second partition can also be used to axially limit the heat exchange fan 400, thereby increasing the reliability of the installation of the heat exchange fan 400.

In order to ensure the coaxiality when the second connecting shaft 301 is connected to the first connecting shaft 402 or the coaxiality when the second connecting shaft 301 is connected to the second motor shaft 502, the second connecting shaft 301 is connected to a connecting member 110, and the connecting member 110 is configured to connect the first connecting shaft 402 and the second connecting shaft 301 or the second connecting shaft 301 and the second motor shaft 502.

In some embodiments, as shown in FIG. 65 , a limiting cavity 1101 is provided inside the connector 110, and the limiting cavity 1101 extends along the length direction of the housing 100; the first connecting shaft 402 and the second connecting shaft 301 are respectively provided in the limiting cavity 1101. By providing the first connecting shaft 402 and the second connecting shaft 301 in the limiting cavity 1101, the contact area between the connector 110 and the first connecting shaft 402 and the second connecting shaft 301 can be increased, the connection strength and connection reliability of the connector 110 and the first connecting shaft 402 and the second connecting shaft 301 can be increased, and the first connecting shaft 402 and the second connecting shaft 301 can be ensured.

In some embodiments, a first positioning portion 3011 is provided at one end of the first connecting shaft 402 connected to the connecting member 110, a second positioning portion 4011 is provided at one end of the second connecting shaft 301 connected to the connecting member 110, and the connecting member 110 is provided with a third positioning portion 1102. The first positioning portion 3011 and the third positioning portion 1102 cooperate with each other to locate the circumferential connection position of the first connecting shaft 402 and the connecting member 110; the second positioning portion 4011 and the third positioning portion 1102 cooperate with each other to locate the circumferential connection position of the second connecting shaft 301 and the connecting member 110.

In other embodiments, the first positioning portion 3011 is a plane disposed on the outer peripheral wall of the first connecting shaft 402, the second positioning portion 4011 is a plane disposed on the outer peripheral wall of the second connecting shaft 301, and the third positioning portion 1102 is a plane disposed on the inner wall of the position-limiting through cavity 1101. The first connecting shaft 402 is a cylindrical structure when the first positioning portion 3011 is not disposed, the second connecting shaft 301 is also a cylindrical structure when the second positioning portion 4011 is not disposed, and the inner wall of the position-limiting through cavity 1101 is a cylindrical structure when the third positioning portion 1102 is not disposed; when the first positioning portion 3011 and the third positioning portion 1102 are attached to each other, the first connecting shaft 402 cannot rotate relative to the connecting member 110, thereby positioning the first connecting shaft 402 in the position-limiting through cavity 1101. Similarly, when the second positioning portion 4011 and the third positioning portion 1102 are fitted together, the second connecting shaft 301 cannot rotate relative to the connecting member 110 , thereby positioning the second connecting shaft 301 in the limiting through cavity 1101 .

In some embodiments, as shown in Figure 65, the connecting member 110 is provided with a first connecting portion 1103 and a second connecting portion 1104, and the first connecting portion 1103 and the second connecting portion 1104 are distributed along the length direction of the shell 100, and the first connecting portion 1103 is connected to the first connecting shaft 402 so that the first connecting shaft 402 is connected to the connecting member 110; the second connecting portion 1104 is connected to the second connecting shaft 301 so that the second connecting shaft 301 is connected to the connecting member 110.

In other embodiments, the first connecting portion 1103 is a first connecting hole connected to the limiting through cavity 1101, and the second connecting portion 1104 is a second connecting hole connected to the limiting through cavity 1101, and the first connecting hole and the second connecting hole are respectively arranged in a direction perpendicular to the circumference of the connecting member 110; the first connecting shaft 402 is sleeved in the limiting through cavity 1101, and fasteners such as screws or bolts extend into the limiting through cavity 1101 from the first connecting hole and abut against the first connecting shaft 402 to fix the first connecting shaft 402; the second connecting shaft 301 is sleeved in the limiting through cavity 1101, and fasteners such as screws or bolts extend into the limiting through cavity 1101 from the second connecting hole and abut against the second connecting shaft 301 to fix the second connecting shaft 301.

The above-mentioned wall-mounted air conditioner also includes an electric control box 600, which is arranged in the shell 100; a circuit board 610 is arranged in the electric control box 600, and the circuit board 610 is coupled to the drive motor 500 through a line; the electric control board is connected to the indoor heat exchanger 200 through a first line, and the end of the first line close to the circuit board 610 is higher than the end of the first line close to the indoor heat exchanger 200.

In order to increase the stability of the fresh air fan 300 during operation, the end of the second connecting shaft 301 away from the connecting member 110 is connected to the first support part 124, and the first support part 124 is installed on the second half shell 742. The first support part 124 is used to support the rotation of the second connecting shaft 301, thereby increasing the stability of the operation process of the fresh air fan 300 and reducing the noise and vibration of the fresh air fan 300.

It should be noted that, in some embodiments, the first support portion 124 is a bearing component 120. Since the first support portion 124 is installed on the second half shell 742, there is no need to additionally set a bearing seat to install the first support portion 124, which not only reduces the number of overall components but also facilitates assembly.

As shown in Figures 66 to 69, the first support part 124 is located at the center of the second grille 7421. By installing the first support part 124 at the second grille 7421 of the second half shell 742, the bearing seat used to install the first support part 124 can be omitted, which effectively ensures the smooth operation of the fresh air fan 300, while minimizing the number of structural parts, achieving high efficiency and low cost.

It should be noted that although the first support part 124 is installed at the second grille 7421 and has a certain blocking effect on the outdoor fresh air entering the second fresh air cavity 760 from the first fresh air cavity 750, the blocking effect is relatively weak, and the blocking effect of the first support part 124 on the outdoor fresh air can be compensated by adjusting the opening size of the second grille 7421.

In some embodiments, the first support portion 124 is disposed through the second grille 7421, and the two ends of the first support portion 124 along the axial direction of the heat exchange fan 400 extend into the second fresh air cavity 760 and the first fresh air cavity 750 respectively, so as to increase the firmness of the installation of the first support portion 124. Since the thickness and strength of the side wall of the second half shell 742 where the second grille 7421 is opened are limited, the first support portion 124 is disposed through the second grille 7421, so that the first support portion 124 and the second half shell 742 are subjected to balanced forces, and the reliability of the connection between the first support portion 124 and the second half shell 742 is increased.

In some embodiments, the second half shell 742 is provided with a mounting portion 7422 , and the first support portion 124 is located inside the fresh air volute 700 and mounted on the mounting portion 7422 .

In other embodiments, the mounting portion 7422 is a mounting opening provided on the second grille 7421 , and the first support portion 124 is snap-fitted into the mounting opening so that the first support portion 124 is mounted on the second half shell 742 .

In some other embodiments, the first support portion 124 is provided with a mounting groove 125, and a positioning platform 7423 is provided on the outer edge of the mounting opening, and the positioning platform 7423 is provided in the mounting groove 125, so that the first support portion 124 is installed at the mounting opening. It should be noted that the mounting groove 125 extends circumferentially along the first support portion 124 and is arranged in an annular shape.

In some other embodiments, the first support portion 124 includes a bearing sleeve 121 and a bearing ball 122, the bearing ball 122 is connected to the second connecting shaft 301, the bearing ball 122 is disposed inside the bearing sleeve 121, and the bearing sleeve 121 is made of a soft material such as rubber or silicone. The mounting groove 125 is disposed on the outer peripheral wall of the bearing sleeve 121.

In order to further support the rotation of the second connecting shaft 301 and increase the stability of the operation of the fresh air fan 300, the second connecting shaft 301 is connected to a second support portion 126 at one end close to the connecting piece 110 along the length direction of the shell 100. The second support portion 126 is installed on the fresh air volute 700 and is located at the shaft hole 210. The second support portion 126 can also prevent the fresh air fan 300 from shaking in the axial direction during operation.

A third connecting portion 7411 is provided on the side of the first half shell 741 facing the heat exchange fan 400, and the third connecting portion 7411 is located at the shaft hole 210; the third connecting portion 7411 defines a mounting cavity, the mounting cavity is connected to the shaft hole 210, and the mounting cavity is connected to the second fresh air cavity 760, and the openings at both ends of the mounting cavity are correspondingly arranged toward the fresh air fan 300 and the heat exchange fan 400, the second support portion 126 is arranged in the mounting cavity, and the outer peripheral wall of the second support portion 126 is in contact with the inner wall of the mounting cavity.

It should be noted that, in some embodiments, the second support portion 126 is a bearing component 120, and the second support portion 126 is installed using the third connecting portion 7411, eliminating the mounting base for installing the second support portion 126, reducing the number of components of the air conditioner indoor unit, and facilitating assembly.

When the second connecting shaft 301 passes through the shaft hole 210, a gap needs to be left between the second connecting shaft 301 and the inner edge of the shaft hole 210 to prevent the two from being too tight and causing the second connecting shaft 301 to be unable to rotate. However, the gap between the inner edge of the shaft hole 210 and the second connecting shaft 301 will cause the outdoor fresh air in the second fresh air chamber 760 to leak from the gap, resulting in condensation around the shaft hole 210 and on the second connecting shaft 301, affecting product quality. Moreover, the second connecting shaft 301 needs to be provided with a positioning component to locate the installation position of the fresh air fan 300. Since the size of the positioning component is usually larger than the size of the second connecting shaft 301, a larger gap is formed between the second motor shaft 502 or the connecting shaft and the shaft hole 210. Therefore, the fresh air in the second fresh air chamber 760 is easily leaked from the gap.

By disposing the second support portion 126 in the installation cavity, the installation cavity can be sealed by the second support portion 126 to prevent condensation from being generated around the shaft hole 210 and on the second connecting shaft 301 .

Since the driving motor 500 drives the heat exchange fan 400 and the fresh air fan 300 to operate simultaneously, the fresh air fan 300 cannot stop working alone, resulting in that the fresh air function cannot be turned off when the air-conditioning indoor unit is working. Therefore, the above-mentioned air-conditioning indoor unit is provided with a first switch component 770 at the second air inlet 710, and the second air inlet 710 is opened or closed by the first switch component 770 to control whether outdoor fresh air is introduced into the first fresh air chamber 750, thereby controlling the opening and closing of the fresh air function.

When the air conditioner indoor unit is working, when it is necessary to turn off the fresh air function, closing the second air inlet 710 can prevent the outdoor fresh air from being introduced into the first fresh air chamber 750, thereby preventing the outdoor fresh air from flowing into the room from the third air outlet 720; when it is necessary to turn on the fresh air function, opening the second air inlet 710 can allow the outdoor fresh air to be introduced into the first fresh air chamber 750 from the second air inlet 710, thereby allowing the outdoor fresh air to flow into the room from the third air outlet 720.

It should be noted that closing the second air inlet 710 by the first switch assembly 770 can also prevent fresh air from flowing back into the room when the air-conditioning indoor unit is turned off, thereby reducing indoor air noise and wind feeling when the fresh air function is not turned on, and improving the user experience.

The following takes the driving motor 500 as a single-axis motor as an example to describe in detail the working principle of the above-mentioned wall-mounted air conditioner.

The motor shaft of the driving motor 500 is connected to the heat exchange fan 400, and the driving motor 500 drives the heat exchange fan 400 to rotate through the motor shaft. The first connecting shaft 402 is connected to the second connecting shaft 301 through the connecting piece 110, so that the fresh air fan 300 and the heat exchange fan 400 are connected to each other, and the first connecting shaft 402 rotates synchronously with the heat exchange fan 400, and the first connecting shaft 402 is connected to the second connecting shaft 301 through the connecting piece 110. Therefore, the connecting piece 110, the second connecting shaft 301 and the fresh air fan 300 connected to the second connecting shaft 301 rotate synchronously with the heat exchange fan 400 respectively. The support portion 124 supports the rotation of one end of the second connecting shaft 301 away from the connecting member 110, and the second support portion 126 supports the rotation of one end of the second connecting shaft 301 close to the connecting member 110, so as to increase the stability of the rotation of the second connecting shaft 301, thereby increasing the smoothness of the operation of the fresh air fan 300. Through the operation of the fresh air fan 300, outdoor fresh air is introduced into the first fresh air cavity 750 from the second air inlet 710, and enters the second fresh air cavity 760 through the second grille 7421 after purification treatment by the filter assembly 800. The outdoor fresh air in the second fresh air cavity 760 passes through the third air outlet 720 and flows from the fresh air outlet to the room.

When assembling the above-mentioned wall-mounted air conditioner, the fresh air module is pre-installed first to ensure the convenience of assembly and improve assembly efficiency. When installing, first install the first support part 124 on the second half shell 742, then assemble the second half shell 742 with the first split shell 730, assemble one end of the second connecting shaft 301 of the fresh air fan 300 with the first support part 124, and set the other end of the second connecting shaft 301 through the second support part 126, and assemble the first half shell 741 with the second half shell 742 to complete the assembly of the fresh air module. Since the two ends of the second connecting shaft 301 are correspondingly connected to the first support part 124 and the second support part 126, the first support part 124 and the second support part 126 provide support for the second connecting shaft 301 to prevent the fresh air fan 300 from shaking along the axial direction of the second connecting shaft 301 during operation. The second support part 126 also plays a sealing role to prevent condensation problems caused by air leakage.

After assembling the heat exchange fan 400 and the drive motor 500, install them in the housing 100, respectively sleeve the first connecting shaft 402 and the second connecting shaft 301 in the limiting cavity 1101, and respectively fix the first connecting shaft 402 and the connecting member 110 and the second connecting shaft 301 and the connecting member 110 by fasteners. Then fix the fresh air module, and the installation of the remaining components is the same as the installation method of the conventional air conditioner, which will not be repeated here.

The above-mentioned wall-mounted air conditioner connects the first connecting shaft 402 and the second connecting shaft 301 by arranging a connecting piece 110 to ensure the coaxiality of the first connecting shaft 402 and the second connecting shaft 301 when they are connected and the reliability of the two when they rotate synchronously, thereby increasing the smoothness of the operation of the fresh air fan 300; by installing the first support part 124 on the second grille 7421 of the second half shell 742 and using the second half shell 742 to install the first support part 124, the bearing seat used to install the first support part 124 can be omitted, the number of parts of the air-conditioning indoor unit can be reduced, the assembly efficiency of the air-conditioning indoor unit can be improved, and the cost can be reduced; by installing the second support part 126 on the third connecting part 7411 of the first shell and using the first shell to install the second support part 126, the bearing seat used to install the second support part 126 can be omitted, the number of parts of the air-conditioning indoor unit can be reduced, the assembly efficiency of the air-conditioning indoor unit can be improved, and the cost can be reduced.

Another implementation of the wall-mounted air conditioner disclosed herein is shown in Figures 72 to 86. In some embodiments of the present disclosure, the wall-mounted air conditioner includes an air-conditioning indoor unit, and the air-conditioning indoor unit further includes a shell 100, an indoor heat exchanger 200, a heat exchange fan 400, a fresh air module and a drive motor 500.

As shown in Figure 72, the shell 100 is configured to form the overall appearance of the air-conditioning indoor unit, and the shell 100 has a top and a bottom, the top of the shell 100 and the bottom of the shell 100 are opposite ends, and the height direction of the shell 100 is from the top of the shell 100 to the bottom of the shell 100; the left side of the shell 100 and the right side of the shell 100 are opposite sides, and the length direction of the shell 100 is from the left side of the shell 100 to the right side of the shell 100; the front side of the shell 100 and the back side of the shell 100 are opposite sides, and the direction from the front side of the shell 100 to the back side of the shell 100 is the thickness direction of the shell 100; wherein, the shell 100 is set at the top of the room or the upper space of the room, the front side of the shell 100 is set toward the user, and the back side of the shell 100 is set toward the wall.

A heat exchange air duct is defined inside the housing 100. The housing 100 is formed with a first air inlet 101 and a first air outlet 102. The first air inlet 101 and the first air outlet 102 are respectively connected to the heat exchange air duct. The first air inlet 101 is located at the top of the housing 100, and the first air outlet 102 is opened at the front side of the housing 100 and arranged near the bottom of the housing 100, that is, the first air outlet 102 is located at the front lower side of the housing 100. A first grille is provided at the first air inlet 101 to prevent debris from entering the interior of the housing 100; the first air outlet 102 is located at the front lower side of the housing 100, and a wind guide plate 220 is provided at the first air outlet 102. The wind guide plate 220 is connected to the housing 100 in an openable and closable manner to open or close the first air outlet 102.

As shown in FIG. 73 , the indoor heat exchanger 200 is installed in the housing 100 and is located in the heat exchange air duct, and is configured to heat the indoor air in the heat exchange air duct to form air-conditioning air to meet the cooling or heating needs of the user; it should be noted that the indoor heat exchanger 200 is arranged close to the first air inlet 101. It should also be noted that the air-conditioning air can be cold air, hot air, or even normal temperature air.

As shown in FIG. 74 , the heat exchange fan 400 is installed in the housing 100 and is located in the heat exchange air duct. The heat exchange fan 400 is axially extended along the length direction of the housing 100 below the heat exchanger 200. The heat exchange fan 400 is operated to introduce indoor air into the heat exchange air duct. After the indoor heat exchanger 200 heats up to form air-conditioned air, the air-conditioned air flows into the room from the first air outlet 102. It should be noted that the heat exchange fan 400 is a cross-flow fan, and the rotation axis of the heat exchange fan 400 is arranged along the length direction of the housing 100.

As shown in Figures 73-73 and Figures 81-83, the fresh air module is configured to introduce outdoor fresh air into the room; the fresh air module includes a fresh air volute 700 and a fresh air fan 300, the fresh air volute 700 and the heat exchange fan 400 are distributed along the length direction of the housing 100, a fresh air duct is defined in the fresh air volute 700, the fresh air fan 300 is installed in the fresh air duct, and the fresh air duct is provided with a second air inlet 710 and a third air outlet 720, the second air inlet 710 is connected to the outside, and the third air outlet 720 is connected to the second air outlet 103. Through the operation of the fresh air fan 300, the outdoor fresh air is introduced into the fresh air duct from the second air inlet 710, passes through the third air outlet 720, and flows into the room from the third air outlet 720.

It should be noted that the housing 100 is further provided with a second air outlet 103 , and the second air outlet 103 is connected to the third air outlet 720 , so that outdoor fresh air flows from the second air outlet 103 to the indoor through the third air outlet 720 .

A filter assembly 800 is provided in the fresh air duct to purify the outdoor fresh air flowing into the room. The filter assembly 800 includes a purification frame and a filter, the filter is arranged on the purification frame, and the filter is configured to filter and purify the outdoor fresh air to prevent impurities and flocs mixed in the outdoor fresh air from entering the room.

In some embodiments, the fresh air volute 700 is installed on the shell 100, and the fresh air volute 700 is connected to the shell 100 by fasteners such as screws or screws. In order to prevent the vibration generated by the rotation of the fresh air fan 300 from being transmitted to the shell 100 and other components, shock-absorbing rubber is provided between the fasteners and the shell 100 to buffer and absorb vibration.

As shown in Figure 83, the fresh air fan 300 is a centrifugal fan, and the fresh air fan 300 is configured to introduce indoor fresh air into the room; through the operation of the fresh air fan 300, the outdoor fresh air is introduced into the fresh air duct from the second air inlet 710, and the outdoor fresh air is purified by the filter assembly 800 and flows into the room through the third air outlet 720 and the second air outlet 103.

In the related art, the fresh air fan 300 and the heat exchange fan 400 are each connected to a motor, and the fresh air fan 300 and the heat exchange fan 400 operate independently under the driving action of the motors connected to them. In some embodiments of the present disclosure, as shown in Figures 6, 8 and 14, the heat exchange fan 400 and the fresh air fan 300 are driven by the same drive motor 500 to save a motor, reduce production costs, and improve assembly efficiency. The heat exchange fan 400 and the fresh air fan 300 operate synchronously, and the heat exchange fan 400 and the fresh air fan 300 are arranged with a common rotation axis; wherein the drive motor 500 can be a single-axis motor or a double-axis motor.

When the driving motor 500 is a single-axis motor, the driving motor 500 includes a motor shaft, the motor shaft of the driving motor 500 is connected to the heat exchange fan 400, and the heat exchange fan 400 is connected to the fresh air fan 300, so that the driving motor 500 can drive the heat exchange fan 400 and the fresh air fan 300 to rotate synchronously.

The driving motor 500 is located at one end of the heat exchange fan 400 along the length direction of the shell 100. The heat exchange fan 400 is provided with a first connecting shaft 402. The first connecting shaft 402 is located at one end of the heat exchange fan 400 along the length direction of the shell 100 close to the fresh air fan 300. The heat exchange fan 400 and the fresh air fan 300 are interconnected through the first connecting shaft 402; the other end of the heat exchange fan 400 along the length direction of the shell 100 is provided with a shaft sleeve 401, and the shaft sleeve 401 is provided with a mounting hole. The motor shaft of the driving motor 500 extends into the mounting hole to connect the driving motor 500 and the heat exchange fan 400 to each other.

When the driving motor 500 is a dual-axis motor, the driving motor 500 includes a first motor shaft 501 and a second motor shaft 502, the first motor shaft 501 and the second motor shaft 502 are coaxially arranged, the first motor shaft 501 is connected to the fresh air fan 300, and the second motor shaft 502 is connected to the heat exchange fan 400. It should be noted that in actual applications, the length of the first motor shaft 501 or the second motor shaft 502 is limited, and the first motor shaft 501 may need to be connected to a transmission shaft to form a second connection shaft, so that the first motor shaft 501 can be connected to the fresh air fan 300, and the second motor shaft 502 may need to be connected to a transmission shaft to form a third connection shaft, so that the second motor shaft 502 can be connected to the heat exchange fan 400. This is common knowledge in the art and will not be repeated.

It should be noted that the fresh air volute 700 is provided with an axial hole 210, the opening of the axial hole 210 extends along the length direction of the shell 100, and the axial hole 210 is configured to connect the inside of the fresh air volute 700 with the outside of the fresh air volute 700, so that the first connecting shaft 402 or the second connecting shaft can pass through the axial hole 210 and connect to the heat exchange fan 400.

As shown in Fig. 81 to Fig. 83, the fresh air volute 700 includes a first split shell 730 and a second split shell 740, the first split shell 730 and the second split shell 740 are distributed along the length direction of the housing 100, and the first split shell 730 and the second split shell 740 are connected to each other, the first split shell 730 and the second split shell 740 jointly define a first fresh air cavity 750, and the second split shell 740 defines a second fresh air cavity 760 inside; the second fresh air cavity 760 and the first fresh air cavity 750 jointly form a fresh air duct. Among them, the fresh air fan 300 is installed in the second fresh air cavity 760; the filter assembly 800 is arranged in the first fresh air cavity 750.

The second split shell 740 is usually designed as a split structure to facilitate the installation of the fresh air fan 300; the second split shell 740 includes a first half shell 741, a second half shell 742 and a third half shell 743; the first half shell 741 and the second half shell 742 are arranged opposite to each other along the length direction of the shell 100; the third half shell 743 is provided in a spaced-apart manner; The third half shell 743 is also arranged opposite to the second half shell 742 along the length direction of the shell 100; the first half shell 741 is located above the third half shell 743, and the first half shell 741 and the third half shell 743 are spliced with each other, and the first split shell 730 and the second half shell 742 are arranged opposite to each other on the side away from the first half shell 741 to jointly form a first fresh air chamber 750.

The assembly steps of the fresh air volute 700 are as follows: first connect the first split shell 730 and the second half shell 742 to each other, then connect the third half shell 743 and the side of the second half shell 742 facing away from the first split shell 730 to each other, then install the fresh air fan 300 in the second fresh air cavity 760, and finally connect the first half shell 741 and the side of the second half shell 742 facing away from the first split shell 730 to each other, and connect the first half shell 741 and the third half shell 743 to each other.

In some embodiments, a first notch 7412 is disposed at the bottom of the first half shell 741 , and a second notch 7431 is disposed at the top of the third half shell 743 . The second notch 7431 and the first notch 7412 are disposed correspondingly and are jointly spliced to form the shaft hole 210 .

Since the first connecting shaft 402 usually needs to be provided with a positioning component, the positioning component is configured to locate the connection position between the fresh air fan 300 and the first connecting shaft 402, and the dimension from the outer peripheral wall of the positioning component to the axis of the first connecting shaft 402 usually needs to be larger than the dimension D1 from the outer peripheral wall of the first connecting shaft 402 to the axis of the first connecting shaft 402. By splicing the first half shell 741 and the third half shell 743 to form the shaft hole 210, the positioning component can be prevented from interfering with the shaft hole 210, thereby avoiding the problem that the positioning component cannot be arranged inside the fresh air volute 700 due to the size of the positioning component being larger than the inner diameter of the shaft hole 210.

In some embodiments, the second half shell 742 is provided with a second grille 7421 , and the second grille 7421 is located at the connection point between the first fresh air cavity 750 and the second fresh air cavity 760 , so that the first fresh air cavity 750 and the second fresh air cavity 760 are connected to each other.

The second air inlet 710 is opened in the first fresh air cavity 750, the third air outlet 720 is opened in the second fresh air cavity 760, and the filter assembly 800 is arranged in the first fresh air cavity 750, so that the filter assembly 800 purifies the outdoor fresh air entering the first fresh air cavity 750 from the second air inlet 710, and allows the air in the first fresh air cavity 750 that has been purified by the filter assembly 800 to pass through the second grille 7421 and enter the second fresh air cavity 760, and then flow from the second air outlet 103 to the indoor through the third air outlet 720.

It should be noted that the first fresh air chamber 750 is provided with a socket so that the filter assembly 800 can be extended into the first fresh air chamber 750 through the socket, thereby realizing the installation of the filter assembly 800. When the filter assembly 800 needs to be removed, the filter assembly 800 can be pulled out from the socket. By detachably installing the filter assembly 800 in the first fresh air chamber 750, it is convenient for users to disassemble, clean and replace the filter by themselves. The disassembly and installation method of the filter assembly 800 is simple and easy to operate.

It should also be noted that in order to install the fresh air volute 700, the fresh air fan 300 and the drive motor 500, as shown in Figure 5, the shell 100 is provided with a first inner cavity 104, a third inner cavity 105 and a second inner cavity 106, and the third inner cavity 105, the first inner cavity 104 and the second inner cavity 106 are distributed along the length direction of the shell 100; the first inner cavity 104 is configured to install the heat exchange fan 400; the third inner cavity 105 is configured to install the drive motor 500; the second inner cavity 106 is configured to install the fresh air module.

In some embodiments, the second inner cavity 106 is separated from the first inner cavity 104 by a first partition, and the first inner cavity 104 is separated from the third inner cavity 105 by a second partition. The first partition and the second partition can also be used to axially limit the heat exchange fan 400, thereby increasing the reliability of the installation of the heat exchange fan 400.

Since the driving motor 500 drives the heat exchange fan 400 and the fresh air fan 300 to operate simultaneously, the fresh air fan 300 cannot stop operating alone, resulting in that the fresh air function cannot be turned off alone when the wall-mounted air conditioner is working. Therefore, the above-mentioned wall-mounted air conditioner is provided with a first switch component 770 at the second air inlet 710, and the second air inlet 710 is opened or closed by the first switch component 770 to control whether outdoor fresh air is introduced into the first fresh air chamber 750, thereby controlling the opening and closing of the fresh air function.

When the air conditioner indoor unit is working, when it is necessary to turn off the fresh air function, closing the second air inlet 710 can prevent the outdoor fresh air from being introduced into the first fresh air chamber 750, thereby preventing the outdoor fresh air from flowing into the room from the third air outlet 720; when it is necessary to turn on the fresh air function, opening the second air inlet 710 can allow the outdoor fresh air to be introduced into the first fresh air chamber 750 from the second air inlet 710, thereby allowing the outdoor fresh air to flow into the room from the third air outlet 720.

It should be noted that the first switch assembly 770 closing the second air inlet 710 can also prevent outdoor fresh air from flowing back into the room when the wall-mounted air conditioner stops working, reducing indoor air noise and wind feeling when the fresh air function is not turned on, and improving the user experience. It should also be noted that the structure of the first switch assembly 770 and the principle of closing the second air inlet 710 belong to conventional technical means in the field, and will not be repeated here.

Although the first switch assembly 770 closes the second air inlet 710 to prevent outdoor fresh air from being introduced into the room through the second air inlet 710, when the wall-mounted air conditioner works normally but the second air inlet 710 is closed, since the fresh air fan 300 rotates synchronously with the heat exchange fan 400, the fresh air fan 300 runs but no excess air enters the fresh air volute 700. Therefore, negative pressure is easily generated in the fresh air volute 700, and blocking noise is easily generated in the fresh air volute 700.

Since the first connecting shaft 402 or the second connecting shaft is disposed through the shaft hole 210, the first connecting shaft 402 or the second connecting shaft is connected to the heat exchange air The fan 400 and the fresh air fan 300 rotate synchronously, so a gap is usually left between the first connecting shaft 402 and the inner edge of the shaft hole 210 or the second connecting shaft and the inner edge of the shaft hole 210 to ensure that the first connecting shaft 402 can drive the fresh air fan 300 to rotate reliably. When the fresh air fan 300 is running, indoor air will enter the fresh air volute 700 through the gap. Therefore, by reasonably determining the size of the gap, a proper amount of indoor air can enter the fresh air volute 700 through the gap to compensate for the air flowing out of the fresh air volute 700 from the third air outlet 720, so that the internal pressure of the fresh air volute 700 remains stable, thereby reducing the stall noise generated by the operation of the fresh air fan 300 when the second air inlet 710 is closed.

When the drive motor 500 is a single-axis motor, the distance from any point on the outer wall of the first connecting shaft 402 to the axis of the heat exchange fan 400 is D1, and the distance from any point on the inner edge of the shaft hole 210 to the axis of the heat exchange fan 400 is D2. D1 and D2 satisfy the relationship: D1/D2≤0.5.

In some embodiments, the axis of the first connecting shaft 402 is colinear with the center line of the shaft hole 210 .

When the drive motor 500 is a dual-axis motor, the distance from any point on the outer wall of the second connecting shaft to the axis of the heat exchange fan 400 is D3, and the distance from any point on the inner edge of the shaft hole 210 to the axis of the heat exchange fan 400 is D2. D3 and D2 satisfy the relationship: D3/D2≤0.5.

The above-mentioned wall-mounted air conditioner, as shown in Figure 73, also includes an electric control box 600, which is arranged in the shell 100; a circuit board 610 is arranged in the electric control box 600, and the circuit board 610 is coupled to the drive motor 500 through a line; the electric control board is connected to the indoor heat exchanger 200 through a first line, and the end of the first line close to the circuit board 610 is higher than the end of the first line close to the indoor heat exchanger 200.

In order to support the rotation of the first connecting shaft 402, as shown in Figures 77 and 78, the first connecting shaft 402 is connected to a bearing component 120, and the bearing component 120 is configured to support the rotation of the first connecting shaft 402, thereby increasing the stability of the heat exchange fan 400 and the fresh air fan 300 during operation.

In some embodiments, the second inner cavity 106 is separated from the first inner cavity 104 by a first partition, and the first inner cavity 104 is separated from the third inner cavity 105 by a second partition. The first partition and the second partition can also be used to axially limit the heat exchange fan 400, thereby increasing the reliability of the installation of the heat exchange fan 400.

As shown in FIG. 78 , the housing 100 is also equipped with a bearing seat 130 configured to install the bearing component 120 . The bearing seat 130 is provided with a through cavity extending along the length direction of the housing 100 , and the bearing component 120 is disposed in the through cavity.

In some embodiments, the bearing seat 130 is mounted on the second partition portion.

In some embodiments, the bearing seat 130 is provided with a clamping portion, the second partition portion is provided with a connecting port, and the clamping portion is arranged in the connecting port so that the bearing seat 130 is fixedly connected to the second partition portion, thereby achieving the installation and fixation of the bearing seat 130.

In some embodiments, as shown in FIGS. 78 and 86 , the bearing component 120 includes a bearing sleeve 121 and a bearing ball 122, the bearing ball 122 is installed in the bearing sleeve 121, and the first connecting shaft 402 is arranged through the bearing ball 122. The bearing sleeve 121 abuts against the inner wall of the bearing seat 130 so that the bearing component 120 is installed in the bearing seat 130. It should be noted that the bearing sleeve 121 is made of a soft material such as rubber or silicone.

The structure of the above-mentioned wall-mounted air conditioner is described in detail below by taking the driving motor 500 as a single-axis motor as an example.

The housing 100 defines a second inner cavity 106, a first inner cavity 104 and a third inner cavity 105 in sequence along its length direction. The fresh air volute 700 is arranged in the second inner cavity 106, the heat exchange fan 400 is arranged in the first inner cavity 104, and the drive motor 500 is arranged in the third inner cavity 105; the drive motor 500 includes a motor shaft, the motor shaft of the drive motor 500 is connected to the heat exchange fan 400, and the motor shaft of the drive motor 500 is arranged in a colinear manner with the rotation axis of the heat exchange fan 400; the fresh air volute 700 is provided with an axial hole 210 on the side facing the heat exchange fan 400, and the axial hole 210 is provided on the side facing the heat exchange fan 400. The diameter of the first connecting shaft 402 is 20 mm, one end of the first connecting shaft 402 passes through the shaft hole 210 and is connected to the fresh air fan 300 disposed in the second fresh air chamber 760, and the other end of the first connecting shaft 402 is connected to the end of the heat exchange fan 400 away from the driving motor 500, the axis of the first connecting shaft 402 is collinearly arranged with the rotation axis of the heat exchange fan 400, and the axis of the first connecting shaft 402 is collinearly arranged with the center line of the shaft hole 210, the outer diameter of the first connecting shaft 402 is 8 mm, and there is a 6 mm gap between the outer peripheral wall of the first connecting shaft 402 and the inner edge of the shaft hole 210. The driving motor 500 drives the heat exchange fan 400 to rotate, and the heat exchange fan 400 drives the fresh air fan 300 to rotate through the first connecting shaft 402.

When there is no need to introduce outdoor fresh air, the first switch assembly 770 closes the second air inlet 710, and the fresh air fan 300 is operated to introduce indoor air into the fresh air volute 700 through the gap, and flows into the room through the third air outlet 720, thereby reducing the stall noise generated when the fresh air fan 300 is in operation. When outdoor fresh air is introduced, the first switch assembly 770 opens the second air inlet 710, and the fresh air fan 300 is operated to introduce the outdoor fresh air into the fresh air volute 700 from the second air inlet 710. Although there is a gap between the first connecting shaft 402 and the inner edge of the shaft hole 210, the outdoor fresh air may leak into the room through the gap, but since the size of the gap is usually smaller than the third air outlet 720, the leakage of outdoor fresh air is small, and the amount of condensation generated by the leakage of outdoor fresh air at the first connecting shaft 402 and the shaft hole 210 is also small, which has little impact on the wall-mounted air conditioner. Compared with the impact of the stalling noise caused by the operation of the fresh air fan 300 when the second air inlet 710 is closed, the leakage of outdoor fresh air and the amount of condensation generated by the leakage of outdoor fresh air at the first connecting shaft 402 and the shaft hole 210 can be ignored.

The above-mentioned wall-mounted air conditioner is provided with a driving motor 500 to drive the fresh air fan 300 and the heat exchange fan 400 to rotate at the same time, so as to save a driving motor 500 and simplify the overall structure of the wall-mounted air conditioner; the second air inlet 710 is opened or closed by providing a first switch component 770 to meet the user's requirements of introducing outdoor fresh air or not introducing outdoor fresh air; when the first connecting shaft 402 rotates, vibration and noise will inevitably be generated, and a gap is provided between the shaft hole 210 and the first connecting shaft 402 to prevent the first connecting shaft 402 from being in contact with the fresh air volute 700. Although the fresh air fan 300 is arranged inside the fresh air volute 700, there is no direct contact between the fresh air fan 300 and the fresh air volute 700. Therefore, the vibration and noise generated when the first connecting shaft 402 rotates can be avoided from being transmitted to the fresh air volute 700; by reasonably determining the size of the gap between the shaft hole 210 and the first connecting shaft 402, indoor air can enter the fresh air volute 700 through the gap to maintain the internal pressure of the fresh air volute 700 stable, thereby avoiding the generation of stalling noise in the fresh air volute 700 due to the synchronous rotation of the fresh air fan 300 and the heat exchange fan 400 when the second air inlet 710 is closed.

The above-mentioned wall-mounted air conditioner not only has a simple and compact structure and saves a driving motor 500, but also has low stall noise generated in the fresh air volute 700 when the fresh air function is turned off.

Some embodiments of the present disclosure provide an air-conditioning system, including an outdoor unit and an indoor unit, wherein the indoor unit is the indoor unit of any one of the above-mentioned wall-mounted air conditioners, and details are referred to the above.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Those skilled in the art will understand that the disclosure scope of the present application is not limited to the above embodiments, and certain elements of the embodiments may be modified and replaced without departing from the spirit of the present application. The scope of the present application is limited by the appended claims.

Claims (16)

An air conditioner, comprising: The housing comprises: a first inner cavity and a second inner cavity, wherein the first inner cavity and the second inner cavity are arranged along the length direction of the shell; A first air inlet is arranged at the top of the housing; A first air outlet is arranged at the front bottom of the housing; A second air outlet is arranged at the top of the housing; an indoor heat exchanger, disposed in the first inner cavity, the indoor heat exchanger being configured to perform heat exchange on the air passing through the indoor heat exchanger to form a heat exchange airflow; A heat exchange fan is arranged in the first inner cavity, and the heat exchange fan is arranged below the indoor heat exchanger; indoor air flow enters the shell through the first air inlet under the action of the heat exchange fan, and is output to the room through the first air outlet after being heat exchanged by the indoor heat exchanger; A fresh air volute is disposed in the second inner cavity, and the fresh air volute includes a second air inlet and a third air outlet; A fresh air fan is arranged in the fresh air volute; when the fresh air fan is operated, outdoor fresh air flows from the first air inlet through the inside of the fresh air volute and then flows into the room from the third air outlet; A drive motor is arranged in the housing and between the fresh air volute and the heat exchange fan; the drive motor drives the heat exchange fan and the fresh air fan to operate synchronously; the drive motor includes a first motor shaft and a second motor shaft, the first motor shaft and the second motor shaft are arranged coaxially; the first motor shaft is connected to the heat exchange fan; The heat exchange fan comprises a support shaft, the support shaft is arranged at one end of the heat exchange fan body away from the drive motor, and the support shaft is connected with a bearing component to support the heat exchange fan to rotate; An axial hole is provided on the side wall of the fresh air volute facing the driving motor, the axial hole is communicated with the interior of the fresh air volute; the second motor shaft passes through the axial hole and is connected to the heat exchange fan; An electric control box, the electric control box being arranged on a side of the fresh air volute away from the drive motor along the length direction of the shell; A circuit board is arranged in the electric control box, and the circuit board is coupled to the driving motor through a line. The air conditioner according to claim 1, wherein the electric control box comprises a box body and a cover plate, the box body comprises an opening arranged toward the front side of the housing, and the cover plate is arranged at the opening of the box body to close the opening of the box body; The circuit board is arranged in the box body. The air conditioner according to claim 1 or 2, wherein the shell includes a mounting seat, the mounting seat is arranged close to the rear side of the shell, and the electric control box is arranged on the mounting seat. The air conditioner according to any one of claims 1 to 3, wherein the fresh air volute comprises a first split shell and a second split shell, and the first split shell and the second split shell are distributed along the length direction of the housing; The first split shell and the second split shell together define a first fresh air cavity, and the second split shell defines a second fresh air cavity inside; The fresh air fan is arranged in the second fresh air cavity; The shaft hole is arranged on a side of the second split shell facing the heat exchange fan. The air conditioner according to any one of claims 1 to 4, wherein the drive motor comprises a protective cover, the protective cover is disposed on the housing and is configured to limit an installation position of the drive motor on the housing. The air conditioner according to claim 5, wherein the shell further comprises a first partition portion and a second partition portion, the first partition portion and the second partition portion are arranged inside the shell and are arranged correspondingly along the length direction of the shell, and the first partition portion and the second partition portion jointly define the first inner cavity. The air conditioner according to claim 6, wherein the protective cover and the first partition portion are arranged correspondingly along the length direction of the shell, and the protective cover is located on the side of the first partition portion away from the second partition portion; the protective cover and the first partition portion jointly define a third inner cavity. The air conditioner according to any one of claims 1 to 7, wherein a center line of the second air inlet forms a first angle α with a height direction of the housing, and the first angle α satisfies: 0°＜α≤30°. The air conditioner according to any one of claims 1 to 8, wherein the fresh air volute is provided with an outer wall of the second air inlet which is inclined along the thickness direction of the shell, from the front side of the shell to the rear side of the shell, toward a direction close to the top of the shell. An air conditioner, comprising: The housing comprises: a first inner cavity and a second inner cavity, wherein the first inner cavity and the second inner cavity are arranged along the length direction of the shell; A first air inlet is arranged at the top of the housing; A first air outlet is arranged at the front bottom of the housing; A second air outlet is arranged at the top of the housing; an indoor heat exchanger, disposed in the first inner cavity, the indoor heat exchanger being configured to perform heat exchange on the air passing through the indoor heat exchanger to form a heat exchange airflow; A heat exchange fan is arranged in the first inner cavity, and the heat exchange fan is arranged below the indoor heat exchanger; indoor air flow enters the shell through the first air inlet under the action of the heat exchange fan, and is output to the room through the first air outlet after being heat exchanged by the indoor heat exchanger; A fresh air volute is disposed in the second inner cavity, and the fresh air volute includes a second air inlet and a third air outlet; A fresh air fan is arranged in the fresh air volute; A driving motor is arranged in the housing and at one end of the heat exchange fan along the length direction of the housing and away from the fresh air volute; the driving motor drives the heat exchange fan and the fresh air fan to operate synchronously; A first connecting shaft is arranged at one end of the heat exchange fan facing the fresh air fan; the axis of the first connecting shaft extends along the length direction of the shell; A second connecting shaft passes through the fresh air fan along the length direction of the housing, and the second connecting shaft is coaxially arranged with the first connecting shaft; an axial hole, arranged on a side wall of the fresh air volute facing the heat exchange fan, the axial hole being in communication with the interior of the fresh air volute; the second connecting shaft passing through the axial hole; A connecting member configured to connect the first connecting shaft and the second connecting shaft; one end of the connecting member along the length direction of the shell is connected to the first connecting shaft, and the other end of the connecting member along the length direction of the shell is connected to one end of the second connecting shaft facing the heat exchange fan; The distance from any point on the outer peripheral wall of the first connecting shaft to the axis of the heat exchange fan is D1, and the distance from any point along the inner edge of the shaft hole to the axis of the heat exchange fan is D2. D1 and D2 satisfy the relationship: D1/D2≤0.5. The air conditioner according to claim 10, wherein the fresh air volute comprises a first split shell and a second split shell, and the first split shell and the second split shell are distributed along the length direction of the housing; The first split shell and the second split shell together define a first fresh air cavity, and the second split shell defines a second fresh air cavity inside; The fresh air fan is arranged in the second fresh air cavity; The shaft hole is arranged on a side of the second split shell facing the heat exchange fan. The air conditioner according to claim 10, wherein the driving motor comprises a protective cover, the protective cover is disposed on the housing and is configured to limit the installation position of the driving motor on the housing. The air conditioner according to claim 12, wherein the shell further comprises a first partition portion and a second partition portion, the first partition portion and the second partition portion are arranged inside the shell and are correspondingly arranged along the length direction of the shell, and the first partition portion and the second partition portion jointly define the first inner cavity. The air conditioner according to claim 13, wherein the protective cover and the first partition portion are connected along the length of the housing. The protective cover is arranged correspondingly, and the protective cover is located on a side of the first partition part away from the second partition part; the protective cover and the first partition part jointly define a third inner cavity. The air conditioner according to any one of claims 10 to 14, wherein a center line of the second air inlet forms a first angle α with a height direction of the housing, and the first angle α satisfies: 0°＜α≤30°. An air conditioner according to any one of claims 10 to 15, wherein the fresh air volute is provided with an outer wall of the second air inlet which is inclined along the thickness direction of the shell, from the front side of the shell to the rear side of the shell, toward a direction close to the top of the shell.