CN107655076B - Indoor unit of wall-mounted air conditioner - Google Patents

Abstract

The invention provides a wall-mounted air conditioner indoor unit, which comprises: the shell comprises a housing and a front panel arranged in front of the housing, and the shell is arranged obliquely downwards relative to a supporting wall body so that the air supply outlet faces obliquely downwards; an air inlet is formed in the top wall of the housing; a heat exchanger; the air injection assembly is arranged in the air supply opening and comprises a first air injection part and a second air injection part which are transversely arranged, wherein the first air injection port and the second air injection port are respectively formed on the inner peripheral wall of the first air injection part and the second air injection part and are respectively used for jetting the air flow in the air injection part forwards and driving the ambient air in an air suction hole defined by the inner peripheral wall of the air injection part to be sent out obliquely downwards; the first air supply assembly and the second air supply assembly are respectively used for generating second heat exchange air flow which enters from the air inlet and is supplied into the corresponding air injection part after heat exchange with the heat exchanger. The scheme increases the air supply quantity and leads the indoor temperature to be wholly and uniformly reduced.

Description

Indoor unit of wall-mounted air conditioner

Technical Field

The invention relates to an air conditioner, in particular to an indoor unit of a wall-mounted air conditioner.

Background

The air conditioner is one of the necessary household appliances, and along with the increasing requirements of users on comfort and health, the air supply mode of the traditional air conditioner is to send cold air indoors, then the cold air is slowly convected with ambient air, the heat exchange speed is slower, people cannot feel cool rapidly, the air supply port of the indoor unit directly blows the people, adverse effects can be brought to the health of the users, and air conditioning diseases are easy to occur.

To this problem, the indoor unit of the spraying air outlet of soft air supply appears in the prior art, and it utilizes less air outlet to drive the surrounding air and blows out for the air after the heat transfer is mixed with the surrounding air and is sent out, however the requirement of spraying air outlet to the structure is higher, makes the spraying air outlet be applied to in the comparatively abundant cabinet indoor unit in space mostly. The hanging type indoor unit using the jet outlet often needs to set the casing to be round or in other irregular shapes in order to meet the structural requirement of the jet outlet, so that on one hand, the hanging type indoor unit has a gap with the use habit of a user and the existing cognition of the hanging type indoor unit, and is not easy to accept by the user; on the other hand, the installation of the hanging type indoor unit is troublesome, so that the hanging type indoor unit using the jet air outlet cannot meet the use requirement of a user.

Disclosure of Invention

The invention aims to provide a wall-mounted air conditioner indoor unit with soft air supply and high heat exchange speed.

A further object of the present invention is to provide a wall-mounted air conditioner indoor unit that is compact and compatible with the use habits of users.

Another further object of the present invention is to make the air supply mode of the indoor unit of the wall-mounted air conditioner flexible, and to meet the adjustment requirements of different requirements.

In particular, the present invention provides a wall-mounted air conditioner indoor unit, comprising:

the shell comprises a shell and a front panel arranged in front of the shell, an air inlet is formed in the top wall of the shell, an oblong air supply opening is formed in the lower portion of the front panel, and the shell is arranged obliquely downwards relative to a supporting wall for fixing the indoor unit of the wall-mounted air conditioner so that the air supply opening faces obliquely downwards;

the heat exchanger is arranged in the shell;

the air injection assembly is arranged in the air supply opening and comprises a first air injection part and a second air injection part which are transversely arranged, a first air injection port and a second air injection port are respectively formed on the inner peripheral walls of the first air injection part, the first air injection port is used for injecting air flow in the first air injection part forwards and driving ambient air in a first air suction hole defined by the inner peripheral wall of the first air injection part to be sent out obliquely downwards, the second air injection port is used for injecting air flow in the second air injection part forwards and driving ambient air in a second air suction hole defined by the inner peripheral wall of the second air injection part to be sent out obliquely downwards, and the first air suction hole and the second air suction hole are respectively communicated with the surrounding environment at the upstream of the air supply direction;

The first air supply assembly and the second air supply assembly are transversely arranged in the shell at intervals, the first air supply assembly is used for generating first heat exchange airflow which enters from the air inlet on the top wall of the shell and is supplied to the first air injection part after exchanging heat with the heat exchanger, and the second air supply assembly is used for generating second heat exchange airflow which enters from the air inlet on the top wall of the shell and is supplied to the second air injection part after exchanging heat with the heat exchanger.

Optionally, the wall-mounted air conditioner indoor unit further comprises a fixing frame, wherein one end of the fixing frame is fixedly connected with the back of the housing, and the other end of the fixing frame is used for being fixed on a supporting wall; and at least a part of the lower edge of the back of the housing forms a chamfer so as to be attached to the supporting wall body by the chamfer after the fixing frame is fixed with the supporting wall body, thereby supporting the indoor unit.

Optionally, the housing is arranged with an inclination angle in the range of 5 to 30 degrees relative to the wall.

Optionally, the wall-mounted air conditioner indoor unit further comprises a partition plate, wherein the partition plate comprises a longitudinal plate part arranged parallel to the front panel, and the middle part of the longitudinal plate part is recessed backwards to define a heat exchanger accommodating cavity for arranging a heat exchanger with the front panel; and is also provided with

The air inlet is formed by an air inlet grille arranged at the top of the housing, the partition plate further comprises a transverse plate part connected with the top of the longitudinal plate part and arranged at intervals with the top of the housing, and the transverse plate part defines an air inlet channel from the air inlet to the heat exchanger accommodating cavity.

Optionally, the middle part of the longitudinal plate part is also provided with a first through hole and a second through hole which are transversely arranged at intervals,

the first air supply assembly includes: the impeller and the volute of the first centrifugal fan are arranged in the space defined by the longitudinal plate part and the housing, and the air collecting port of the first centrifugal fan penetrates out of the first through hole to suck air from the heat exchanger accommodating cavity so as to form a first heat exchange airflow;

the second air supply assembly includes: and the impeller and the volute of the first centrifugal fan are also arranged in the space defined by the longitudinal plate part and the housing, and the air collecting port of the second centrifugal fan penetrates out from the second through hole so as to suck air from the heat exchanger accommodating cavity to form second heat exchange airflow.

Optionally, the first air-jetting portion and the second air-jetting portion are respectively composed of an annular inner wall and an annular outer wall, and

the annular outer wall and the annular inner wall of the first air injection part jointly define a first air supply cavity, the edge of the annular outer wall and the annular inner wall of the first air injection part, which are connected, form a first air injection port, and the end part of one side of the second air injection part, which is far away from the first air injection part, is provided with a first air inlet communicated with the first air supply assembly, so that a first heat exchange air flow is introduced into the first air supply cavity;

The annular outer wall and the annular inner wall of the second air injection part jointly define a second air supply cavity, the edge of the annular outer wall and the annular inner wall of the second air injection part are connected to form a second air injection port, and the end part of one side of the first air injection part far away from the second air injection part is provided with a second air inlet communicated with the second air supply assembly, so that second heat exchange air flow is introduced into the second air supply cavity.

Optionally, the rear side edge of the annular inner wall of the first air injection part is recessed toward the inside of the first air supply cavity, and the position of the annular outer wall of the first air injection part opposite to the rear side edge of the annular inner wall is provided with an outward flanging, so that a gap between the annular outer wall of the first air injection part and the rear side edge of the annular inner wall forms a first air injection port;

the rear side edge of the annular inner wall of the second air injection part is recessed towards the inside of the second air supply cavity, and the position, opposite to the rear side edge of the annular inner wall, of the annular outer wall of the second air injection part is provided with an outward flanging, so that a gap between the annular outer wall of the second air injection part and the rear side edge of the annular inner wall forms a second air injection port.

Optionally, the annular inner wall of the first jet section extends forwardly from its rear side edge to form a continuously outwardly expanding first coanda surface; the section of the part of the annular outer wall of the first air injection part, which is positioned at the rear side of the air injection assembly, is spiral, so that the air flow of the first air supply cavity is ejected from the first air injection port along the annular outer wall of the first air injection part, is sent out forwards along the first coanda surface, and drives the ambient air in the first air pumping hole to be pumped out; and is also provided with

The annular inner wall of the second jet section extending forwardly from its rear edge to form a continuously outwardly diverging second coanda surface; and the section of the part of the annular outer wall of the second air injection part, which is positioned at the rear side of the air injection assembly, is spiral, so that the air flow of the second air supply cavity is ejected out of the second air injection port along the annular outer wall of the second air injection part, is sent out forwards along the second coanda surface, and drives the ambient air in the second air pumping hole to be pumped out.

Optionally, an exhaust port of the volute of the first centrifugal fan faces a sidewall of the housing on the first air inlet side, and the first air supply assembly further includes: the first air guide component is connected between the air outlet and the first air inlet of the first centrifugal fan so as to guide the air flow discharged by the first centrifugal fan into the first air supply cavity;

the exhaust port of the spiral case of second centrifugal fan is towards the lateral wall of casing of second air inlet one side, and second air supply subassembly includes: the second air guide component is connected between the exhaust port and the second air inlet of the second centrifugal fan so as to guide the air flow exhausted by the second centrifugal fan into the second air supply cavity.

Optionally, the first wind guiding component includes: the first drainage section is provided with an air inlet of the first air guide component, is connected with an air outlet of the volute of the first centrifugal fan, and at least part of the first drainage section is in a spiral shape to guide the air flow direction discharged by the first centrifugal fan downwards; the first air supply section is connected with the first drainage section, a first air collection cavity is defined in the first air supply section and used for receiving air flow discharged by the first centrifugal fan, and a first air outlet connected with the first air inlet is formed in the first air supply section so that the air flow of the first air collection cavity is supplied to the first air supply cavity; and is also provided with

The second air guiding member includes: the second drainage section is provided with an air inlet of the second air guide component, is connected with an air outlet of the volute of the second centrifugal fan, and at least a part of the second drainage section is in a spiral shape to guide the air flow direction discharged by the second centrifugal fan downwards; the second air supply section is connected with the second drainage section, and a second air collection cavity is defined in the second air supply section and used for receiving air flow discharged by the second centrifugal fan, and a second air outlet connected with the second air inlet is formed in the second air supply section so that the air flow of the second air collection cavity is supplied to the second air supply cavity.

Optionally, the first drainage section is gradually reduced from the air inlet of the first air guide component along the air flow direction, the first air supply section forms a volute shape along the air outlet direction of the first drainage section, and the wind resistance of the first heat exchange air flow in the first air collection cavity is reduced;

the second drainage section gradually tapers from the air inlet of the second air guide component along the air flow direction, the second air supply section forms a volute shape along the air outlet direction of the second drainage section, and the wind resistance of the second heat exchange air flow in the second air collection cavity is reduced.

The invention relates to a wall-mounted air conditioner indoor unit, which is characterized in that an oblong air supply opening is arranged below a shell and is used for arranging an annular air injection assembly, the air injection assembly comprises a first air injection part and a second air injection part which are independently arranged, and the first air injection assembly and the second air injection assembly are used for supplying air flows which pass through heat exchange of a heat exchanger, so that the air flows after heat exchange are sprayed out from the air injection openings of the first air injection part and the second air injection part, ambient air around the air supply opening is sucked and mixed with heat exchange air with severe ambient temperature difference, the sent air flows are soft, the feeling of blowing to a human body is more comfortable, on one hand, the air supply amount is increased, the flow of indoor air is accelerated, the indoor temperature can be uniformly reduced as a whole, and the air outlet of the wall-mounted air conditioner indoor unit is in an oblong runway shape and is arranged below the shell, has an integral structure which is relatively similar to that of the prior traditional wall-mounted indoor unit, is easy to accept by users, and can easily replace the prior traditional wall-mounted indoor unit, and the installation position is flexible.

Furthermore, the shell of the wall-mounted air conditioner indoor unit is obliquely arranged relative to the supporting wall body, so that the air supply opening faces obliquely downwards, and the air supply opening is large in air output due to the adoption of an injection type air outlet mode.

Further, the air inlet of the wall-mounted air conditioner indoor unit is arranged on the top wall of the housing and is out of the visual range of a user, so that the integrity of the appearance can be ensured, and the air inlet channel from the air inlet to the accommodating cavity of the heat exchanger is formed by the partition plate, so that the smoothness of heat exchange air flow is ensured.

Further, the wall-mounted indoor unit provided by the invention has the advantages that the two air supply assemblies respectively provide the air flow after heat exchange to the two air injection parts of the air injection assembly and are finally sprayed out from the air injection port, the two air supply assemblies are mutually matched to supply air together, and the two air supply assemblies can be respectively and independently controlled according to working conditions, for example, the two air supply assemblies can supply air according to the same air quantity at the same time; respectively supplying air according to different air volumes; the air supply is started alternatively, so that the air outlet of the indoor unit meets the requirements of different working conditions, the control is more flexible, and the different requirements of users are met.

Furthermore, the wall-mounted air conditioner indoor unit has compact internal component structure, fully utilizes the space in the shell and can make the wall-mounted air conditioner indoor unit thinner.

Furthermore, the indoor unit of the wall-mounted air conditioner improves the positions and the structures of the heat exchanger, the centrifugal fan, the air guide component and the like, so that the occupied space is reduced, and the air supply wind resistance is reduced.

The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

fig. 1 is a schematic exterior view of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;

fig. 2 is an installation schematic diagram of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;

Fig. 3 is a schematic exploded view of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;

fig. 4 is a schematic view of an air injection assembly in an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;

FIG. 5 is a front view of a first jet section of the jet assembly shown in FIG. 4;

FIG. 6 is a schematic cross-sectional airflow diagram taken along section line A-A in FIG. 5;

fig. 7 is a schematic view of internal components of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention; and

fig. 8 is a schematic view illustrating a structure in which a first air blowing unit and a second air blowing unit blow air to an air blowing unit in an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention.

Detailed Description

In order to facilitate description, the directions of "up", "down", "front", "back", "top", "bottom", etc. mentioned in the description are defined according to the spatial positional relationship of the wall-mounted air conditioner indoor unit 100 in the normal working state, for example, the side of the wall-mounted air conditioner indoor unit 100 facing the user is the front, and the side that is attached to the mounting position is the rear.

Fig. 1 is a schematic exterior view of a wall-mounted air conditioner indoor unit 100 according to an embodiment of the present invention, fig. 2 is an installation schematic view of the wall-mounted air conditioner indoor unit 100 according to an embodiment of the present invention, and fig. 3 is a schematic exploded view of the wall-mounted air conditioner indoor unit 100 according to an embodiment of the present invention. The wall-mounted air conditioner indoor unit 100 may generally include: the air-jet device comprises a shell 110, an air-jet assembly 120, a heat exchanger 140, a first air supply assembly and a second air supply assembly. Wherein the housing 110 may include: a housing 112, and a front panel 114 disposed in front of the housing 112. The housing 112 is formed of a top wall, side walls, and a back, which together define a space for accommodating the internal components, and a front panel 114 is disposed in front of the housing 112, thereby closing the internal space of the housing 112. The housing 110 is provided with an air inlet 116 and an air outlet 117. The air outlet 117 is formed in an oblong shape and is disposed at a lower portion of the housing 110 and communicates with the surrounding environment upstream in the air-supplying direction. The air inlet 116 is disposed on a top wall of the housing 112, and the air inlet 116 may be formed of a grill, mesh, or the like. The user generally cannot see the position of the air inlet 116, so that the integrity of the appearance can be ensured.

In some preferred embodiments, the air injection assembly 120 may also be disposed at a front position of the lower portion of the housing 110, and the bottom wall of the casing 112 is provided with a hollowed-out area 119 at the rear portion of the air injection assembly 120, that is, upstream in the air supply direction, for the heat exchange air ejected from the air injection assembly 120 to suck and mix the ambient air.

Alternatively, the air supply opening 117 may be disposed at the lower portion of the housing 110 in a front-rear penetrating manner (the corresponding positions of the cover 112 and the front panel 114 are respectively provided with an oblong through hole so as to form the air supply opening 117 extending therethrough, and the position of the air supply opening 117 formed at the rear side of the cover 112 is recessed forward so as to form an air circulation area behind the air supply opening 117, thereby enabling the interior of the air supply opening 117 to be communicated with the air circulation area, and the heat exchange gas sprayed by the air spraying assembly 120 can suck ambient air from the air circulation area to mix, so that the temperature difference between the mixed air flow and the surrounding environment is small, the air supply amount is softer, and the flow of indoor air is faster.

The jet assembly 120 uses jet air to supply air at a long distance to form an air flow circulation. The wall-mounted air conditioner indoor unit may be disposed obliquely, and the housing 110 is disposed obliquely downward with respect to the support wall 200 for fixing the wall-mounted air conditioner indoor unit such that the air supply opening 117 is oriented obliquely downward.

An installation mode of the wall-mounted air conditioner indoor unit is as follows: a fixing frame 160 for mounting the housing 110 is provided. One end of the fixing frame 160 is fixedly connected with the back of the housing 112, the other end is used for being fixed on the supporting wall 200, and the lower edge of the back of the housing 112 is also abutted against the supporting wall 200, so that a supporting structure of the housing 110 is formed. The fixing frame 160 may be an integral fixing plate or one or more hanging rods. One end of the fixing frame 160 fixedly supporting the wall 200 can be reliably fixedly connected by bolts and screws.

At least a portion of the lower edge of the back of the casing 112 is chamfered to fit the support wall using the chamfer 118 after the fixing frame 160 is fixed to the support wall 200, thereby supporting the indoor unit 100. For example, the lower edge of the back of the casing 112 is formed with chamfers 118 on both sides so that the rear of the supply port 117 forms an air circulation area. The lower edge of the back of the casing 112, which is not chamfered, may be recessed forward with an air circulation area behind the supply opening 117. In other embodiments, the lower edge of the back of the housing 112 may also be integrally formed with a chamfer 118 to provide ambient air using a hollowed-out area 119 of the bottom wall of the housing 112 that communicates with the ambient environment.

The housing 110 is disposed at an inclination angle range of 5 to 30 degrees with respect to the wall 200. The inclination angle is determined by measuring and calculating according to the hanging height of the indoor unit 100 and the indoor environment, thereby better meeting the requirement of air flow circulation.

The heat exchanger 140 is disposed inside the housing 110. The heat exchanger 140 exchanges heat with air flowing therethrough to change the temperature of the air flowing therethrough. The heat exchanger 140 is part of a refrigeration system that may be implemented using a compression refrigeration cycle that uses a refrigerant to transfer heat through a compression phase change cycle of a compressor, condenser, evaporator, and throttling device. The refrigeration system may also be provided with a four-way valve to change the flow direction of the refrigerant, so that the indoor heat exchanger 140 alternately serves as an evaporator or a condenser to realize a refrigeration or heating function. Since the compression refrigeration cycle in an air conditioner is well known to those skilled in the art, the operation principle and construction thereof will not be described herein. The heat exchanger 140 may be disposed against the front panel 114 of the housing 110.

The air injection assembly 120 is disposed in the air supply opening 117, the air injection assembly 120 has two first air injection portions 128 and second air injection portions 129 which are transversely arranged, the first air injection portions 128 and the second air injection portions 129 are integrally in a long circular ring shape (or racetrack shape), and can be symmetrically disposed relative to the center of the air injection assembly 120, a first air suction hole 1282 is formed in the center of the first air injection portion 128, and a second air suction hole 1292 is formed in the center of the second air injection portion 129. The first air suction hole 1282 and the second air suction hole 1292 are respectively communicated with the surrounding environment at the upstream of the air supply direction, that is, can be communicated with the surrounding environment through the hollow area 119 or the air supply opening 117.

The inner peripheral walls of the first air injection part 128 and the second air injection part 129 are respectively formed with a first air injection port 124 and a second air injection port (not labeled in the figure), the first air injection port 124 is used for injecting the air flow in the first air injection part 128 forward and driving the ambient air in a first air suction hole 1282 defined by the inner peripheral wall of the first air injection part 128 to be sent forward, and the second air injection port is used for injecting the air flow in the second air injection part 129 forward and driving the ambient air in a second air suction hole 1292 defined by the inner peripheral wall of the second air injection part 129 to be sent forward.

Since the housing 110 is disposed obliquely, the direction of the air flow emitted from the first air-jet part 128 and the second air-jet part 129 is obliquely downward. That is, the first air jet 124 is used for jetting the air flow in the first air jet 128 forward and driving the ambient air in the first air suction hole defined by the inner peripheral wall of the first air jet 128 to be sent out obliquely downward, and the second air jet is used for jetting the air flow in the second air jet 129 forward and driving the ambient air in the second air suction hole 1292 defined by the inner peripheral wall of the second air jet 129 to be sent out obliquely downward.

The first air injection part 128 and the second air injection part 129 may be respectively formed by respective annular inner walls and annular outer walls, and the annular outer walls of the first air injection part 128 and the annular inner walls together define a first air supply cavity 125, edges of the annular outer walls of the first air injection part 128 connected with the annular inner walls form a first air injection port 124, and a first air inlet 1281 communicated with the first air supply assembly is opened at the end of the first air injection part 128 on one side of the second air injection part 129, so that the first heat exchange air flow is introduced into the first air supply cavity 125.

The second air injection part 129 is identical to the first air injection part 128 in structure and symmetrically arranged, so that the annular outer wall and the annular inner wall of the second air injection part 129 jointly define a second air supply cavity (not marked in the figure), the edge of the annular outer wall and the annular inner wall of the second air injection part 129, which is connected, forms a second air injection port (not marked in the figure), and a second air inlet 1291 communicated with the second air supply assembly is formed at the end part of the second air injection part 129, which is far away from the first air injection part 128, so that the second heat exchange air flow is introduced into the second air supply cavity.

Since the second air injecting section 129 is identical to the first air injecting section 128 in structure, the structure of the first air injecting section 128 will be described with reference to the drawings. The size and specification of the first air injection part 128 and its internal components may be set according to the air supply capability of the first air supply assembly. Fig. 4 is a schematic view of the air injection assembly 120 of the wall-mounted air conditioner indoor unit 100 according to an embodiment of the present invention, fig. 5 is a front view of the first air injection part 128 of the air injection assembly 120 shown in fig. 4, and fig. 6 is a schematic cross-sectional airflow direction view taken along a section line A-A in fig. 5. The first air injection part 128 includes an annular inner wall 121 and an annular outer wall 122, the annular inner wall 121 and the annular outer wall 122 together form the above-mentioned oblong shape, and the inner side of the annular inner wall 121 is a first air suction hole 1282. The edge of the annular outer wall 122, which is connected with the annular inner wall 121, forms a first air jet 124, and the first air jet 124 is used for jetting out the air flow of the first air supply cavity 125 forwards, and making the air at the rear part of the air supply opening 117 sucked through the air supply opening 117 and sent out obliquely downwards.

The rear side edge 126 of the annular inner wall 121 is recessed inwardly of the first air supply chamber 125, and the annular outer wall 122 has an outwardly turned edge 127 at a position opposite to the rear side edge 126 of the annular inner wall 121, so that a gap between the annular outer wall 122 and the rear side edge 126 of the annular inner wall 121 forms the first air jet 124. The rear edge 126 of the annular inner wall 121 recessed toward the inside of the first air supply chamber 125 may also have an air flow direction guiding effect, so that the air flow in the first air supply chamber 125 is smoothly sent out from the first air jet 124.

The annular inner wall 121 extends forwardly from its rear side edge 126 to form a continuous outwardly expanding coanda surface; and the section of the part of the annular outer wall 122 located at the rear side of the air injection assembly 120 is spiral, so that after the air flow of the first air supply cavity 125 is ejected from the first air injection port 124 along the annular outer wall 122, the air flow is sent forward along the first coanda surface formed by the annular inner wall 121, and the air flow drives the ambient air behind the air supply port 117 to be pumped out. The expansion inclination angle of the annular inner wall 121 extending forward and continuously expanding outwards may be 5 to 15 degrees, the larger the inclination angle is, the faster the expansion speed of the air flow ejected from the air jet 124 is, through a great amount of tests, the expansion inclination angle of the annular inner wall 121 may be set between 6 and 10 degrees, so that the mixing with the ambient air in the first air suction hole 1282 is more facilitated.

The annular inner wall 121 and the annular outer wall 122 together define an annular first air supply chamber 125 inside the first air injection portion 128, and a lateral end (an end far away from the second air injection portion 129) of the annular outer wall 122 is provided with a first air inlet 1281 for providing air flow to the first air supply chamber 125 after heat exchange by the heat exchanger 140.

In some alternative embodiments, the first air injection portion 128 may be integrally formed into an oblong shape, and the annular inner wall 121 and the annular outer wall 122 respectively have two spaced horizontal sections and two arc sections connected to the two horizontal sections, wherein the annular outer wall 122 of one of the two arc sections, which is far from the second air injection portion 129, is provided with a first air inlet 1281 of the first air injection portion 128 for receiving the air flow provided by the first air supply assembly after heat exchange.

The above-described sections of the annular inner wall 121 and the annular outer wall 122 may be formed by a splice of a plurality of connected components, and in some preferred embodiments, the annular inner wall 121 and the annular outer wall 122 may also be formed by a unitary molding.

The first gas jets 124 may be a continuous annular groove, and in some alternative embodiments, the first gas jets 124 may be formed on a portion of the sections of the annular inner wall 121 and the annular outer wall 122, or in spaced apart segments. For example, the first air jets 124 may be provided only on the horizontal section so that the air jets are more uniform and may effectively entrain ambient air within the first air extraction holes 1282. In order to increase the jet velocity of the first air jet 124, the width of the first air jet 124 may be set to 1 to 3mm, and through a great number of tests, the width of the first air jet 124 may be preferably set to about 2mm, and the first air jet 124 with the size width not only ensures the jet velocity of the heat exchange air flow, but also can reduce the windage loss of the heat exchange air flow as much as possible and reduce noise. In fig. 6, the solid arrows indicate the air flow direction of the ambient air, and the broken arrows indicate the air flow direction of the heat exchange air flow ejected from the air ejection ports 124.

The second air injecting part 129 has the same structure as the first air injecting part 128, a rear side edge of an annular inner wall of the second air injecting part 129 is recessed toward the inside of the second air supply chamber, and a position of an annular outer wall of the second air injecting part 129 opposite to the rear side edge of the annular inner wall has an outward burring so that a gap between the annular outer wall of the second air injecting part 129 and the rear side edge of the annular inner wall forms a second air injecting port. The annular inner wall of the second jet portion 129 extends forwardly from its rear side edge to form a continuous outwardly expanding second coanda surface; and the section of the part of the annular outer wall of the second air injection part 129 located at the rear side of the air injection assembly 120 is spiral, so that the air flow of the second air supply cavity is sent out forwards along the second coanda surface after being ejected from the second air injection port along the annular outer wall of the second air injection part 129, and drives the ambient air in the second air suction hole 1292 to be pumped out obliquely downwards. A lateral end of the annular outer wall of the second air injection portion 129 (the end remote from the first air injection portion 128) is provided with a second air inlet 1291 for providing air flow to the second air supply chamber after heat exchange by the heat exchanger 140.

Additional structural details of the second air jet portion 129 may be derived from the description of the first air jet portion 128, and are not repeated herein.

The first air supply assembly and the second air supply assembly are transversely arranged in the shell 110 at intervals, wherein the first air supply assembly is used for generating a first heat exchange air flow which enters from the air inlet 116 on the top wall of the housing 112, exchanges heat with the heat exchanger 140 and then is supplied into the first air supply cavity 125 of the first air injection part 128 through the first air inlet 1281; the second air supply assembly is configured to generate a second heat exchange air flow entering from the air inlet 116 on the top wall of the housing 112, exchanging heat with the heat exchanger 140, and then being supplied to the second air supply chamber of the second air jet portion 129 through the second air inlet 1291.

The first air supply assembly and the second air supply assembly are symmetrically arranged with the center of the heat exchanger 140, and the first air supply assembly and the second air supply assembly supply air to the first air inlet 1281 and the second air inlet 1291 at two sides of the air injection assembly 120 respectively.

The first air supply assembly may include: the first centrifugal fan 131 and the first air guide 136. The first centrifugal fan 131 is used as a power source for the flow of the first heat exchange airflow, and may be configured such that ambient air enters from the air inlet 116 and exchanges heat with the heat exchanger 140, passes through the first centrifugal fan 131, is discharged downstream, and finally is sent out of the indoor unit 100 through the air injection assembly 120. The first air guiding component 136 is connected between the air outlet of the first centrifugal fan 131 and the first air inlet 1281, and is used for guiding the air flow discharged by the first centrifugal fan 131 into the first air supply cavity 125.

The second air supply assembly may include: the second centrifugal fan 151 and the second air guide 156. The second centrifugal fan 151, which is a power source for the second heat exchange airflow, may be configured such that ambient air enters from the air inlet 116 and exchanges heat with the heat exchanger 140, passes through the second centrifugal fan 151, is discharged downstream, and finally is sent out of the indoor unit 100 through the second air injection unit 129. The second air guiding member 156 is connected between the air outlet of the second centrifugal fan 151 and the second air inlet 1291, and is used for guiding the air flow discharged from the second centrifugal fan 151 into the second air supply cavity.

Fig. 7 is a schematic diagram of internal components of a wall-mounted air conditioner indoor unit 100 according to one embodiment of the present invention. The wall-mounted air conditioner indoor unit 100 includes a partition 143 inside, and the partition 143 is used to isolate the air flow before and after heat exchange. The partition 143 includes a longitudinal plate portion 1431 disposed parallel to the front panel 114, and a middle portion of the longitudinal plate portion 1431 is recessed rearward to define the heat exchanger accommodating chamber 144 for disposing the heat exchanger 140 with the front panel 114. The heat exchanger 140 is disposed within the heat exchanger receiving chamber 144.

The partition 143 further includes a transverse plate portion 1432 that interfaces with the top of the longitudinal plate portion 1431 and is spaced from the top of the housing 112, the transverse plate portion 1432 defining an air intake passage from the air intake 116 to the heat exchanger receiving cavity 144. After entering from the air inlet 116, the outside air enters the heat exchanger accommodating chamber 144 forward along the lateral plate portion 1432 to exchange heat with the heat exchanger 140.

The longitudinal plate portion 1431 is provided at its center with a first through hole 145 through which the first air collecting port 132 of the first centrifugal fan 131 passes and a second through hole 146 through which the second air collecting port 152 of the second centrifugal fan 151 passes. The impeller 133 and the volute 134 of the first centrifugal fan 131 are disposed in the space defined by the longitudinal plate portion 1431 and the casing 112, and the air collecting port 132 of the first centrifugal fan 131 penetrates out from the first through hole 145 to suck air from the heat exchanger accommodating chamber 144 to form a first heat exchange air flow; the impeller 153 and the scroll 154 of the second centrifugal fan 151 are disposed in a space defined by the longitudinal plate portion 1431 and the casing 112, and the air collecting port 152 of the second centrifugal fan 151 penetrates from the second through hole 146 to suck air from the heat exchanger accommodating chamber 144 to form a first heat exchange air flow.

The first and second centrifugal fans 131 and 151 suck air in the heat exchanger accommodating chamber 144, which exchanges heat with the heat exchanger 140, thereby forming first and second heat exchange airflows, respectively. The exhaust port of the first volute 134 of the first centrifugal fan 131 faces the side wall of the housing 110; the inlet of the first air guide 136 is connected to the outlet of the first volute 134. Similarly, the exhaust port of the second volute 154 of the second centrifugal fan 151 is directed toward the other side wall of the housing 110; the inlet of the second air directing member 156 is connected to the outlet of the second volute 154.

Fig. 8 is a schematic diagram illustrating a structure in which a first air blowing unit and a second air blowing unit blow air to an air blowing unit 120 in a wall-mounted air conditioner indoor unit 100 according to an embodiment of the present invention. The first air supply assembly includes: first centrifugal fan 131 and first wind-guiding part 136, the second air supply subassembly includes: the second centrifugal fan 151 and the second air guide 156. In order to ensure the air jet speed, the first air supply assembly and the second air supply assembly of the embodiment both adopt a centrifugal fan as a power source of heat exchange airflow. The first air guiding component 136 is connected between the air outlet of the first centrifugal fan 131 and the first air inlet 1281, so as to guide the air flow discharged by the first centrifugal fan 131 into the first air supply cavity 125. The second air guiding member 136 is connected between the air outlet of the second centrifugal fan 151 and the second air inlet 1291 to guide the air flow discharged from the second centrifugal fan 151 into the second air supply chamber.

The first centrifugal fan 131 accelerates the gas according to the principle that kinetic energy is converted into potential energy by using the first impeller 133 rotating at a high speed, and then decelerates and changes the flow direction, so that the kinetic energy is converted into potential energy. The first centrifugal fan 131 generally includes a first air collection port 132, a first impeller 133, and a first volute 134. The first air collecting port 132 of the first centrifugal fan 131 is used to ensure that the air flow can uniformly fill the inlet interface of the first impeller 133, so as to reduce the flow loss, in this embodiment, the first air collecting port 132 of the first centrifugal fan 131 tapers towards the first impeller 133, forming a flare, and the air exchanging heat with the heat exchanger 140 in the heat exchanger accommodating cavity 144 can be sucked into the first impeller 133 as much as possible. When the first impellers 133 of the first centrifugal fan 131 are driven by the first high-speed motor 135 to rotate along with the shaft, gas between the first impellers 133 rotates along with the first impellers 133 to obtain centrifugal force, the gas is thrown out of the first impellers 133 and enters the first volute 134, and the gas pressure increase in the first volute 134 is guided to be discharged. After the air between the blades is exhausted, negative pressure is formed; the air of the heat exchanger 140 in the heat exchanger accommodating chamber 144 outside the first air collecting port 132 is continuously sucked, thereby forming a continuous air flow.

The first impeller 133 and the first volute 134 of the first centrifugal fan 131 are disposed in a space defined by the longitudinal plate portion 1431 and the casing 112, and an exhaust port of the first volute 134 faces a side wall of the housing 110; the inlet of the first air guide 136 is connected to the outlet of the first volute 134. The first scroll 134 is spirally shaped, and sucks up air thrown out from the first impeller 133, and converts the dynamic pressure of the air flow into static pressure by the gradually widening sectional area.

The first air guiding component 136 is connected between the air outlet of the first centrifugal fan 131 and the first air inlet 1281, and is used for guiding the air flow discharged by the first centrifugal fan 131 into the first air supply cavity 125. The first wind guide component 136 may include a first drainage section 137 and a first wind supply section 138.

The first drainage segment 137 has an air inlet of the first air guiding component 136, and at least part of the segment body of the first drainage segment 137 is spiral to guide the air flow direction discharged by the first centrifugal fan 131 downward, and the first drainage segment 137 tapers from the air inlet of the first air guiding component 136 along the air flow direction, so that the air speed of the air flow entering the first air collecting cavity 139 of the first air supplying segment 138 is increased.

The first air supply section 138 is connected to the first drainage section 137, and defines a first air collecting cavity 139 therein to receive the air flow discharged from the first centrifugal fan 131, and the first air supply section 138 is provided with a first air inlet 1281 facing the first air supply cavity 125 so that the air flow in the first air collecting cavity 139 is supplied to the first air supply cavity 125. The first air supply section 138 forms a volute shape along the air outlet direction of the first drainage section 137, reduces the wind resistance of the air flow in the first air collection cavity 139, enables the air flow to form vortex in the first air collection cavity 139, and can smoothly lead to the first air supply cavity 125 from the first air collection cavity 139.

The first flow guiding section 137 may be disposed on one side of the first centrifugal fan 131, and due to the space limitation of the longitudinal plate portion 1431, the front-rear distance of the first flow guiding section 137 is smaller, and the first air supplying section 138 is located below the heat exchanger accommodating chamber 144 (i.e. below the longitudinal plate portion 1431 and the heat exchanger 140), so that the front-rear distance is greater than the first flow guiding section 137, and the air outlet of the first air supplying section 138 is disposed at the front portion (corresponding to the position of the first air inlet 1281) of the first air collecting chamber 139 on one side of the first air injecting section 128.

The second air supply member has the same structure as the first air supply member. Specifically, the second centrifugal fan 151 generally includes a second gas collection port 152, a second impeller 153, and a second volute 154. The second air collecting port 152 of the second centrifugal fan 151 serves to ensure that the air flow uniformly fills the inlet interface of the second impeller 153, reducing flow losses. The second air collecting port 152 of the second centrifugal fan 151 tapers towards the second impeller 153 to form a bell mouth, so that air exchanging heat with the heat exchanger 140 in the heat exchanger accommodating cavity 144 can be sucked into the second impeller 153 as much as possible. When the second impeller 153 of the second centrifugal fan 151 is driven by the second high-speed motor 155 to rotate along with the shaft, gas between the second impellers 153 rotates along with the second impeller 153 to obtain centrifugal force, the gas is thrown out of the second impeller 153 and enters the second volute 154, and the gas pressure increase in the second volute 154 is guided and discharged. After the air between the blades is exhausted, negative pressure is formed; the air of the heat exchanger 140 in the heat exchanger accommodating chamber 144 outside the second air collecting port 152 is continuously sucked, thereby forming a continuous air flow.

The second impeller 153 and the second scroll 154 of the second centrifugal fan 151 are disposed in a space defined by the longitudinal plate portion 1431 and the casing 112, and an exhaust port of the second scroll 154 faces a side wall of the housing 110; the inlet of the second air directing member 156 is connected to the outlet of the second volute 154. The second scroll 154 is formed in a spiral shape, and sucks up air thrown from the second impeller 153 and converts a dynamic pressure of the air flow into a static pressure by a widened sectional area.

The second air guiding member 156 is connected between the air outlet of the second centrifugal fan 151 and the second air inlet 1291, and is used for guiding the air flow discharged from the second centrifugal fan 151 into the second air supply cavity. The second air guide member 156 may include a second drainage section 157 and a second air supply section 158.

The second drainage section 157 has an air inlet of the second air guiding member 156, and at least a part of the second drainage section 157 is spirally formed to guide the air flow direction discharged from the second centrifugal fan 151 downward, and the second drainage section 157 is tapered from the air inlet of the second air guiding member 156 in the air flow direction, thereby accelerating the air speed of the air flow entering the second air collecting chamber 159 of the second air supplying section 158.

The second air supply section 158 is connected with the second drainage section 157, and defines a second air collection cavity 159 therein to receive the air flow discharged from the second centrifugal fan 151, and the second air supply section 158 is provided with a second air inlet 1291 for supplying the air flow of the second air collection cavity 159 to the second air supply cavity. The second air supply section 158 forms a volute shape along the air outlet direction of the second drainage section 157, reduces the wind resistance of the air flow in the second air collection cavity 159, enables the air flow to form vortex in the second air collection cavity 159, and can smoothly lead from the second air collection cavity 159 to the second air supply cavity.

The second flow guiding section 157 may be disposed on one side of the second centrifugal fan 151, and the front-rear distance of the second flow guiding section 157 is smaller due to the space limitation of the longitudinal plate portion 1431, and the second air supplying section 158 is located below the heat exchanger accommodating chamber 144 (i.e. below the longitudinal plate portion 1431 and the heat exchanger 140), so that the distance in the front-rear direction is greater than that of the second flow guiding section 157, and the air outlet of the second air supplying section 158 is disposed at the front portion (corresponding to the position of the second air inlet 1291) of the second air collecting chamber 159 adjacent to the side of the second air injecting section 129.

The first air supply part and the second air supply part can mutually cooperate to realize the air supply, and both can start simultaneously, can start alone, and the mode of operation of first air supply part and second air supply part can include: the two air supply components operate at the same air speed, the two air supply components operate at different air speeds, the first air supply component operates independently, the second air supply component operates independently, and the first air supply component and the second air supply component operate alternately.

The above operation modes can be used in combination with various sensors of the indoor unit 100, and by detecting the operation environment of the indoor unit 100, the operation states of the first air supply component, the second air supply component and the heat exchanger 140 are adjusted according to the preset control mode, for example, when the temperature of the whole indoor unit 100 needs to be adjusted, the first air supply component and the second air supply component can be started at the same time and continuously operate at the same wind speed (which can be determined according to the difference between the set temperature and the actual temperature); in addition, the wind speeds of the first air supply component and the second air supply component are set to be different, so that the direction of the air supply flow is correspondingly adjusted to adapt to the indoor space; under some special working conditions (for example, when a certain side needs to be blown independently), the first air supply component and the second air supply component can be started alternatively, and in addition, the first air supply component and the second air supply component can be started alternately, so that an effect similar to that of swinging air is achieved, and balanced operation of internal components of the indoor unit 100 is ensured.

Because the first air supply component and the second air supply component supply air to the first air injection part 128 and the second air injection part 129 respectively and independently, the control mode is more flexible and convenient, the air supply requirements of different working conditions can be met, and the use experience of a user is greatly improved.

The air supply opening 117 below the casing 110 is used for arranging the annular air injection assembly 120, so that the air flow passing through the heat exchanger 140 exchanges heat is sprayed out from the air injection assembly 120, ambient air around the air supply opening 117 is sucked and mixed with heat exchange air flow with severe ambient temperature difference, and is sent out obliquely downwards, so that the sent air flow is ensured to be soft, the feeling of blowing to a human body is more comfortable, on one hand, the air supply amount of the indoor unit 100 is increased, the flow of indoor air is accelerated, the indoor temperature can be uniformly reduced in whole, and the air outlet of the wall-mounted air conditioner indoor unit 100 is oblong (also can be called as a runway shape), is arranged below the casing 110, the air inlet 116 is arranged on the top wall of the housing 112, the overall structure is relatively similar to that of the traditional wall-mounted indoor unit, the traditional wall-mounted air conditioner indoor unit is easy to accept by a user, the installation position is flexible, the internal part structure is compact, the space in the casing 110 is fully utilized, and the wall-mounted air conditioner indoor unit 100 can be thinner.

The heat exchange airflow of the wall-mounted air conditioner indoor unit 100 of the present embodiment has the following flow directions: after the first centrifugal fan 131 and the second centrifugal fan 151 are started, air around the indoor unit 100 is sucked into the heat exchanger accommodating chamber 144 from the top air inlet 116, and exchanges heat with the heat exchanger 140. A part of the air flow after heat exchange enters the first centrifugal fan 131, is accelerated by the first impeller 133, enters the first air guide component 136 through the first volute 134, is guided by the first drainage segment 137 of the first air guide component 136, and enters the first air collection cavity 139 of the first air supply segment 138. The air flow enters the annular first air supply cavity 125 from the first air inlet 1281 through the air outlet of the first air supply section 138 at the first air collection cavity 139 in a vortex-type manner, thereby forming a first heat exchange air flow.

The other part of the air flow after heat exchange enters the second centrifugal fan 151, is accelerated by the second impeller 153, enters the second air guide component 156 through the second volute 154, is guided by the second drainage section 157 of the second air guide component 156, and enters the second air collection cavity 159 of the second air supply section 158. The air flow enters the annular second air supply chamber from the second air inlet 1291 at the second air collection chamber 159 in a swirling flow pattern eventually passing through the air outlet of the second air supply section 158, thereby forming a second heat exchange air flow.

After the first heat exchange air flow enters the first air supply cavity 125, the first air jet 124 is ejected forward at a high speed under the guidance of the rear side edge 126 of the annular inner wall 121, so that the air in the air circulation area at the rear part of the air supply opening 117 is driven to be sucked and pass through the first air suction hole 1282, the air is mixed at the front and lower parts of the indoor unit 100 and then is sent into a room, the air outlet volume is greatly increased, and meanwhile, the air flow after heat exchange is mixed with ambient air and becomes cool and uncooled soft air flow, so that the flow of indoor air is accelerated. After entering the second air supply cavity, the second heat exchange air flow is guided by the rear side edge of the annular inner wall of the second air injection part 129, is ejected forward from the second air injection port at a high speed, and drives the air in the air circulation area at the rear part of the air supply port 117 to be sucked through the second air suction hole 1292 and sent out obliquely downwards.

By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (8)

1. An indoor unit of a wall-mounted air conditioner, comprising:

the shell comprises a housing and a front panel arranged in front of the housing, an air inlet is formed in the top wall of the housing, an oblong air supply opening is formed in the lower portion of the front panel, and the shell is arranged obliquely downwards relative to a supporting wall body for fixing the wall-mounted air conditioner indoor unit so that the air supply opening faces obliquely downwards;

the heat exchanger is arranged inside the shell;

the air injection assembly is arranged in the air supply opening and comprises a first air injection part and a second air injection part which are transversely arranged, a first air injection port and a second air injection port are respectively formed in the inner peripheral walls of the first air injection part, the first air injection port is used for injecting air flow in the first air injection part forwards and driving ambient air in a first air suction hole defined by the inner peripheral wall of the first air injection part to be sent downwards obliquely, the second air injection port is used for injecting air flow in the second air injection part forwards and driving ambient air in a second air suction hole defined by the inner peripheral wall of the second air injection part to be sent downwards obliquely, and the first air suction hole and the second air suction hole are respectively communicated with the surrounding environment at the upstream of the air supply direction;

The first air supply assembly and the second air supply assembly are transversely arranged in the shell at intervals, the first air supply assembly is used for generating first heat exchange air flow entering from the air inlet on the top wall of the shell and exchanging heat with the heat exchanger and then supplying the first heat exchange air flow to the first air injection part, and the second air supply assembly is used for generating second heat exchange air flow entering from the air inlet on the top wall of the shell and exchanging heat with the heat exchanger and then supplying the second heat exchange air flow to the second air injection part;

the first air injection part and the second air injection part are respectively formed by an annular inner wall and an annular outer wall, and

the annular outer wall and the annular inner wall of the first air injection part jointly define a first air supply cavity, the edge of the annular outer wall and the annular inner wall of the first air injection part connected with each other forms the first air injection port, and a first air inlet communicated with the first air supply assembly is formed at the end part of one side of the first air injection part far away from the second air injection part, so that the first heat exchange air flow is introduced into the first air supply cavity;

the annular outer wall and the annular inner wall of the second air injection part jointly define a second air supply cavity, the edge of the annular outer wall and the annular inner wall of the second air injection part connected with each other forms the second air injection port, and a second air inlet communicated with the second air supply assembly is formed at the end part of one side of the second air injection part far away from the first air injection part, so that the second heat exchange air flow is introduced into the second air supply cavity;

The wall-mounted air conditioner indoor unit further comprises a partition plate, wherein the partition plate comprises a longitudinal plate part which is arranged parallel to the front panel, and the middle part of the longitudinal plate part is recessed backwards to define a heat exchanger accommodating cavity for arranging the heat exchanger with the front panel; and is also provided with

The air inlet is formed by an air inlet grille arranged at the top of the housing, the partition plate further comprises a transverse plate part connected with the top of the longitudinal plate part and arranged at intervals with the top of the housing, and the transverse plate part defines an air inlet channel from the air inlet to the heat exchanger accommodating cavity;

the wall-mounted air conditioner indoor unit also comprises a fixing frame, one end of the fixing frame is fixedly connected with the back of the housing, and the other end of the fixing frame is used for being fixed on the supporting wall body.

2. The wall-mounted air conditioner indoor unit of claim 1, wherein

At least a part of the lower edge of the back of the housing forms a chamfer so as to be attached to the support wall by the chamfer after the fixing frame is fixed with the support wall, thereby supporting the indoor unit.

3. The wall-mounted air conditioner indoor unit of claim 2, wherein

The housing is disposed at an inclination angle range of 5 to 30 degrees with respect to the wall.

4. The wall-mounted air conditioner indoor unit of claim 1, wherein

The middle part of the longitudinal plate part is also provided with a first through hole and a second through hole which are transversely arranged at intervals,

the first air supply assembly includes: the impeller and the volute of the first centrifugal fan are arranged in the space defined by the longitudinal plate part and the housing, and the gas collecting port of the first centrifugal fan penetrates out of the first through hole so as to suck air from the heat exchanger accommodating cavity to form the first heat exchange airflow;

the second air supply assembly includes: the impeller and the volute of the first centrifugal fan are also arranged in the space defined by the longitudinal plate part and the housing, and the gas collecting port of the second centrifugal fan penetrates out of the second through hole so as to suck air from the heat exchanger accommodating cavity to form the second heat exchange airflow.

5. The indoor unit of wall-mounted air conditioner as recited in claim 4, wherein

The rear side edge of the annular inner wall of the first air injection part is recessed towards the interior of the first air supply cavity, and the position, opposite to the rear side edge of the annular inner wall, of the annular outer wall of the first air injection part is provided with an outward flanging, so that a gap between the annular outer wall of the first air injection part and the rear side edge of the annular inner wall forms the first air injection port;

The rear side edge of the annular inner wall of the second air injection part is recessed towards the interior of the second air supply cavity, and the position, opposite to the rear side edge of the annular inner wall, of the annular outer wall of the second air injection part is provided with an outward flanging, so that a gap between the annular outer wall of the second air injection part and the rear side edge of the annular inner wall forms the second air injection port.

6. The indoor unit of wall-mounted air conditioner as recited in claim 5, wherein

The annular inner wall of the first jet section extending forwardly from its rear edge to form a continuously outwardly expanding first coanda surface; the section of the part of the annular outer wall of the first air injection part, which is positioned at the rear side of the air injection assembly, is spiral, so that the air flow of the first air supply cavity is sent out forwards along the first coanda surface after being sprayed out from the first air injection port along the annular outer wall of the first air injection part, and the air flow drives the ambient air in the first air exhaust hole to be exhausted; and is also provided with

The annular inner wall of the second jet section extending forwardly from its rear edge to form a continuously outwardly expanding second coanda surface; and the section of the part of the annular outer wall of the second air injection part, which is positioned at the rear side of the air injection assembly, is spiral, so that the air flow of the second air supply cavity is sent out forwards along the second coanda surface after being sprayed out from the second air injection port along the annular outer wall of the second air injection part, and the air flow drives the ambient air in the second air exhaust hole to be exhausted.

7. The indoor unit of wall-mounted air conditioner as recited in claim 4, wherein

The exhaust port of the volute of the first centrifugal fan is directed toward the side wall of the housing on the first air inlet side, and the first air supply assembly further includes: the first air guide component is connected between the exhaust port of the first centrifugal fan and the first air inlet so as to guide the air flow exhausted by the first centrifugal fan into the first air supply cavity;

the exhaust port of the spiral case of the second centrifugal fan faces the side wall of the shell at one side of the second air inlet, and the second air supply assembly comprises: the second air guide component is connected between the exhaust port of the second centrifugal fan and the second air inlet so as to guide the air flow exhausted by the second centrifugal fan into the second air supply cavity.

8. The wall-mounted air conditioner indoor unit of claim 7, wherein

The first wind-guiding part includes: the first drainage section is provided with an air inlet of the first air guide component, is connected with an air outlet of the volute of the first centrifugal fan, and at least a part of the first drainage section is in a spiral shape to guide the air flow direction discharged by the first centrifugal fan downwards; the first air supply section is connected with the first drainage section, a first air collection cavity is defined in the first air supply section to receive air flow discharged by the first centrifugal fan, a first air outlet connected with the first air inlet is formed in the first air supply section, so that the air flow of the first air collection cavity is supplied to the first air supply cavity, the first drainage section gradually tapers from the air inlet of the first air guide component along the air flow direction, and the first air supply section forms a volute shape along the air outlet direction of the first drainage section to reduce wind resistance of the first heat exchange air flow in the first air collection cavity; and is also provided with

The second air guiding member includes: the second drainage section is provided with an air inlet of the second air guide component, is connected with an air outlet of the volute of the second centrifugal fan, and at least a part of the second drainage section is in a spiral shape to guide the air flow direction discharged by the second centrifugal fan downwards; the second air supply section is connected with the second drainage section, a second air collection cavity is defined in the second air supply section to receive air flow exhausted by the second centrifugal fan, a second air outlet connected with the second air inlet is formed in the second air supply section, so that air flow of the second air collection cavity is supplied to the second air supply cavity, the second drainage section gradually tapers from the air inlet of the second air guide component along the air flow direction, and the second air supply section forms a volute shape along the air outlet direction of the second drainage section, so that wind resistance of the second heat exchange air flow in the second air collection cavity is reduced.