CN113639317A - Indoor unit of air conditioner - Google Patents

Abstract

The invention provides an air conditioner indoor unit, which is used for connecting an outdoor unit of an air conditioner and comprises: the air conditioner comprises a shell, wherein an air inlet and an air outlet are formed in the shell, the air outlet comprises a first sub air outlet and a second sub air outlet, the shell comprises an upper shell and a lower shell, the lower shell is arranged on the upper shell, the first sub air outlet and the air inlet are arranged on the bottom surface of the lower shell, and the second sub air outlet is arranged on the side wall of the lower shell; an indoor heat exchanger disposed in the housing; an indoor fan disposed in the housing. The air outlets are respectively formed in the bottom face and the side wall of the shell, so that the air supply range is enlarged, and the user experience is improved.

Description

Indoor unit of air conditioner

Technical Field

The invention relates to the technical field of air conditioners, in particular to an air conditioner indoor unit.

Background

An air conditioner, which is a household appliance commonly used in daily life, generally includes an indoor unit installed at an indoor side and an outdoor unit installed at an outdoor side.

Indoor units in the prior art are installed in different ways, and are classified into vertical indoor units, wall-mounted indoor units and ceiling-mounted indoor units. Wherein, suspension type indoor set is less because of its occupation indoor effective space, by extensive using widely. A conventional ceiling-mounted indoor unit (generally referred to as a ducted air conditioner) generally includes a casing, a fan and a heat exchanger disposed in the casing, the casing is disposed on a top wall of a room, and air supply is achieved through an air outlet on a bottom surface of the casing.

However, in actual use, the air outlet disposed at the bottom of the housing has a small air supply range, which results in poor user experience. In view of this, how to design an air conditioning technology with a wide air supply range to improve user experience is a technical problem to be solved by the present invention.

Disclosure of Invention

The invention provides an air conditioner indoor unit, which is characterized in that air outlets are respectively arranged on the bottom surface and the side wall of a shell, so that the air supply range is enlarged, and the user experience is improved.

In some embodiments of the present application, an indoor unit of an air conditioner for connecting an outdoor unit of an air conditioner includes:

the air conditioner comprises a shell, wherein an air inlet and an air outlet are formed in the shell, the air outlet comprises a first sub air outlet and a second sub air outlet, the shell comprises an upper shell and a lower shell, the lower shell is arranged on the upper shell, the first sub air outlet and the air inlet are arranged on the bottom surface of the lower shell, and the second sub air outlet is arranged on the side wall of the lower shell;

an indoor heat exchanger disposed in the housing;

an indoor fan disposed in the housing.

The application provides an air-conditioning indoor unit, through adopting split type casing from top to bottom to dispose first sub-air outlet and second sub-air outlet on casing down, wherein, first sub-air outlet can be followed the bottom surface of shell and is blown downwards, and the second sub-air outlet then lateral wall output is in order to satisfy the requirement that the room covered comprehensively, through setting up the air outlet respectively at the bottom surface and the lateral wall of shell, with increase air supply scope, improvement user experience nature.

In some embodiments of the present application, the indoor heat exchanger is a U-shaped structure, the indoor heat exchanger is partially surrounded on the outside of the indoor fan, the first sub air outlet and the second sub air outlet are disposed in the outside area of the indoor heat exchanger, and the air inlet is disposed in the inside area of the indoor heat exchanger.

In some embodiments of the present application, the indoor fan further comprises a water pump disposed at a position of the casing near the front side wall, the water pump being located between the indoor heat exchanger and the indoor fan.

In some embodiments of the present application, the lower surface of the lower housing is further provided with an access opening, and the access opening is provided with a detachable access cover; the upper shell is provided with a controller, and the controller is arranged opposite to the access hole.

In some embodiments of the present application, the front side wall of the upper housing is provided with an air outlet notch, the front side wall of the lower housing is provided with the second sub-air outlet, and the second sub-air outlet is arranged opposite to the air outlet notch.

In some embodiments of the present application, the first sub air outlets are respectively disposed at two end portions of the bottom surface of the lower housing.

In some embodiments of the present application, the housing further includes an air inlet grille disposed on the bottom surface of the lower housing and covering the air inlet.

In some embodiments of the present application, the sidewall of the lower housing is enclosed outside the sidewall of the upper housing.

In some embodiments of the present application, a guide protrusion and a buckle are disposed on a side wall of the lower housing, a guide groove and a limit hole are disposed on a side wall of the upper housing, the guide protrusion is inserted into the guide groove, and the buckle is clamped in the limit hole.

In some embodiments of the present application, a channel for routing a pipeline is provided on the upper housing, the channel being proximate a rear sidewall of the upper housing.

In some embodiments of the present application, the casing further comprises a sheet metal top plate, a hanging rod is arranged on the sheet metal top plate, the sheet metal top plate is arranged on the top of the upper shell, the indoor heat exchanger and the indoor fan are arranged on the sheet metal top plate,

the air-conditioning indoor unit further comprises a hoisting support, and a plurality of hooks are respectively arranged on two sides of the hoisting support; wherein the hanging rods are used for being inserted into the corresponding hooks.

In some embodiments of this application, hoisting support's both sides are provided with the board that hangs that extends down respectively, a side that hangs the board is provided with the breach structure, the breach structure forms the couple.

In some embodiments of the present application, an inlet of the notch structure is provided with a limiting portion protruding upward.

In some embodiments of the present application, the inlet of the gap structure is a flare.

In some embodiments of the present application, the free end of the cloth rail is provided with a threaded portion on which a nut is threadedly connected.

In some embodiments of the present application, the hanging rod further comprises a decorative plate, and the decorative plate is arranged on the shell and covers the hanging rod at the corresponding position.

In some embodiments of the present application, the trim panel is snap-fit to the housing.

In some embodiments of the present application, a clamping groove is provided on the housing, and a claw is provided on the decorative plate, and the claw is clamped in the clamping groove.

In some embodiments of the present application, the housing is further provided with a positioning hole, and the decorative plate is further provided with a positioning column, wherein the positioning column is inserted into the positioning hole.

In some embodiments of this application, the shell includes panel beating roof and casing, be provided with on the panel beating roof the peg, be provided with on the casing the air intake with the air outlet, indoor heat exchanger with indoor fan sets up the panel beating roof, the casing sets up on the panel beating roof and cover indoor heat exchanger with indoor fan.

Drawings

FIG. 1 is a reference diagram of an embodiment of an indoor unit of an air conditioner;

FIG. 2 is a schematic assembly view of an embodiment of an indoor unit of an air conditioner;

FIG. 3 is an exploded view of an embodiment of an indoor unit of an air conditioner;

FIG. 4 is a schematic view of a partial structure of an indoor unit of an air conditioner according to an embodiment;

FIG. 5 is an enlarged partial schematic view of area A of FIG. 4;

FIG. 6 is an assembled view of an upper casing and a lower casing of an embodiment of an indoor unit of an air conditioner;

fig. 7 is a schematic structural view of a decorative plate in an embodiment of an air conditioning indoor unit.

Reference numerals:

a housing 1;

the device comprises a hanging rod 10, a sheet metal top plate 11, an upper shell 12, a lower shell 13 and an air inlet grille 14;

the air conditioner comprises a nut 100, an air inlet 101, an air outlet 102, an access hole 103, an access cover 104, an air outlet notch 121, a positioning hole 122, a clamping groove 123, a guide groove 124, a limiting hole 125, a channel 126, a guide protrusion 131 and a buckle 132;

a first sub-outlet 1021 and a second sub-outlet 1022;

an indoor heat exchanger 2;

an indoor fan 3;

hoisting the bracket 4;

a hook 41, an expansion bolt 42, a suspension plate 43, and a limit part 44;

a decorative panel 5;

a claw 51 and a positioning column 52;

a water pump 6;

and a controller 7.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "upper," "lower," "front," "back," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.

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

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The present embodiment provides an air conditioner that performs a cooling and heating cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The cooling and heating cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies a refrigerant medium to the air that has been conditioned and heat-exchanged.

The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. 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 expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigerating effect by heat exchange with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor, an outdoor heat exchanger, and an outdoor fan, the indoor unit of the air conditioner includes a portion of an indoor heat exchanger and an indoor fan, and a throttling device (e.g., a capillary tube or an electronic expansion valve) may be provided in the indoor unit or the outdoor unit.

The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. The air conditioner performs a heating mode when the indoor heat exchanger serves as a condenser, and performs a cooling mode when the indoor heat exchanger serves as an evaporator.

The indoor heat exchanger and the outdoor heat exchanger are switched to be used as a condenser or an evaporator, a four-way valve is generally adopted, and specific reference is made to the arrangement of a conventional air conditioner, which is not described herein again.

The refrigeration working principle of the air conditioner is as follows: the compressor works to enable the interior of the indoor heat exchanger (in the indoor unit, the evaporator at the moment) to be in an ultralow pressure state, liquid refrigerant in the indoor heat exchanger is rapidly evaporated to absorb heat, air blown out by the indoor fan is cooled by the coil pipe of the indoor heat exchanger to become cold air which is blown into a room, the evaporated and vaporized refrigerant is compressed by the compressor, is condensed into liquid in a high-pressure environment in the outdoor heat exchanger (in the outdoor unit, the condenser at the moment) to release heat, and the heat is dissipated into the atmosphere through the outdoor fan, so that the refrigeration effect is achieved by circulation.

The heating working principle of the air conditioner is as follows: the gaseous refrigerant is pressurized by the compressor to become high-temperature and high-pressure gas, and the high-temperature and high-pressure gas enters the indoor heat exchanger (the condenser at the moment), is condensed, liquefied and released heat to become liquid, and simultaneously heats indoor air, so that the aim of increasing the indoor temperature is fulfilled. The liquid refrigerant is decompressed by the throttling device, enters the outdoor heat exchanger (an evaporator at the moment), is evaporated, gasified and absorbs heat to form gas, absorbs the heat of outdoor air (the outdoor air becomes cooler) to form gaseous refrigerant, and enters the compressor again to start the next cycle.

Referring to fig. 1 to 7, according to some embodiments of the present application, an air conditioning indoor unit includes:

the air conditioner comprises a shell 1, wherein an air inlet 101 and an air outlet 102 are formed in the shell 1; the air outlet 102 includes a first sub air outlet 1021 and a second sub air outlet 1022, the housing 1 includes an upper case 12 and a lower case 13, the lower case 13 is disposed on the upper case 12, the first sub air outlet 1021 and the air inlet 101 are disposed on a bottom surface of the lower case 13, and the second sub air outlet 1022 is disposed on a side wall of the lower case 13;

an indoor heat exchanger 2, the indoor heat exchanger 2 being disposed in the housing 1;

the indoor fan 3, the indoor fan 3 is set in the outer cover 1;

specifically, the housing 1 is assembled by the upper housing 12 and the lower housing 13, the indoor heat exchanger 2 and the indoor fan 3 are disposed in the housing 1, and in order to increase the air supply range, the first sub air outlet 1021 is disposed on the bottom surface of the lower housing 13, and the first sub air outlet 1021 can directly convey air flow downward, so that hot air is blown to the lower part of the room in winter, and the temperature of the lower space of the room caused by the rising of hot air is reduced.

The side wall of the lower housing 13 is provided with a second sub-air outlet 1022, the second sub-air outlet 1022 can transversely output air flow, so that cold air can be conveyed indoors in summer to blow cold air to the bottom of a transverse room, and the cold air sinks by utilizing the cold air, so that the room can be refrigerated in an all-around manner.

In some embodiments of the present application, in order to facilitate sufficient heat exchange between the air drawn into the casing 1 and the indoor heat exchanger 2, the indoor heat exchanger 2 adopts a U-shaped structure, the indoor heat exchanger 2 is half-enclosed outside the indoor fan 3, the first sub air outlet 1021 and the second sub air outlet 1022 are disposed in an outside area of the indoor heat exchanger 2, and the air inlet 101 is disposed in an inside area of the indoor heat exchanger 2.

Specifically, the indoor heat exchanger 2 with the U-shaped structure can fully utilize the space in the shell 1 to arrange a large enough heat exchange surface, and further improves the heat exchange efficiency of air. Meanwhile, the indoor fan 3 can adopt a centrifugal fan and is surrounded by the indoor heat exchanger 2 in a half-surrounding mode, air sucked by the indoor fan 3 along the axis is directly vertical to the indoor heat exchanger 2 on the outer side, and the improvement of the air outlet speed of the air outlet 102 is facilitated.

The first sub air outlet 1021 and the second sub air outlet 1022 are both distributed at the outer side of the indoor heat exchanger 2, for the first sub air outlet 1021, the ground where the first sub air outlet 1021 is located is arranged opposite to the indoor heat exchanger 2, and air after heat exchange from the indoor heat exchanger 2 can be directly output from the second sub air outlet 1022; for the second sub air outlet 1022, a side wall where the second sub air outlet 1022 is located is arranged opposite to the indoor heat exchanger 2, and the air after heat exchange from the indoor heat exchanger 2 can be directly output from the second sub air outlet 1022.

In a preferred embodiment, the second sub-outlet 1022 may be disposed on a front sidewall of the lower housing 13, and the first sub-outlets 1021 may be disposed on bottom surfaces of two end portions of the lower housing 13. Since the rear portion of the air conditioning indoor unit is generally installed near the wall when installed, the cross air flow outputted from the second sub outlet 1022 of the front side wall of the lower housing 13 can maximally cover the entire room; the two first sub air outlets 1021 on the bottom surface of the lower casing 13 can supply air from both ends to the room, and further cover the bottom area of the housing 1.

In an embodiment of the present application, in order to conveniently discharge the condensed water to the outside when in use, the indoor unit of an air conditioner further includes a water pump 6 disposed at a position of the casing near the front side wall, the water pump being located between the indoor heat exchanger and the indoor fan.

Specifically, the water pump may be mounted on the upper casing 12 or the lower casing 13 as required, and the mounting on the upper casing 12 is taken as an example for description. During the use process, especially during refrigeration in summer, the condensed water generated by the indoor heat exchanger is collected in a water receiving tray arranged on the indoor heat exchanger, and then the condensed water is discharged through the water pump.

And by arranging the water pump at a position close to the front side wall of the casing, the wind blown by the indoor fan is output from the indoor heat exchanger over the water pump. The indoor heat exchanger shields the water pump, so that the noise generated by water absorption of the water pump is reduced. Preferably, the water pump is arranged at a corner position of the indoor heat exchanger, so that air flow blown to the water pump by the indoor fan is buffered by the corner area of the indoor heat exchanger, thereby reducing wind noise and improving user experience.

In another embodiment of the present application, the lower surface of the lower housing is further provided with an access opening 103, and the access opening is provided with a detachable access cover 104; the upper shell is provided with a controller 7, and the controller is arranged opposite to the access hole.

Specifically, the controller is connected with electrical components of the indoor unit of the air conditioner to control the operation of the relevant electrical components, for example, the controller 7 controls the operation of the electrical components such as the indoor fan 3, the water pump 6 and the like. In order to facilitate later maintenance, an access hole 103 is further formed in the lower surface of the lower housing, and the controller 7 can be maintained by opening the access cover 104, so that maintenance convenience is improved.

In another embodiment, in order to facilitate hanging installation, a plurality of hanging rods 10 are respectively arranged on two sides of the housing 1. The air-conditioning indoor unit further comprises a hoisting support 4, and a plurality of hooks 41 are respectively arranged on two sides of the hoisting support 4; wherein the hanging rod 10 is used for being inserted in the corresponding hook 41.

Specifically, in the process of installing the indoor unit of the air conditioner in a room, the hoisting support 4 is fixedly installed on the top surface 1000 of the room through the expansion bolt 42; then, the housing 1 is lifted and the hanging rods 10 are inserted into the corresponding hooks 41, so that the housing 1 is hung on the roof by the hooks 41 and the hanging rods 10 being engaged.

Through fixing hoisting support at the top in room to satisfy the requirement of external installation, the last couple that disposes of hoisting support, simultaneously, disposes the peg on the shell, and when the installation, the peg then disect insertion is in the couple, with the realization hang the shell at the top in room, like this, make the indoor set of air conditioner not occupy indoor effective space on the one hand, on the other hand makes the indoor set of air conditioner satisfy the operation requirement in the room that has decorated, has increased the application range of indoor set of air conditioner.

In some embodiments of the present application, in order to ensure that the housing 1 can be securely and reliably fixed to the lifting bracket 4 after the hanging rod 10 is hung on the hook 41, the free end of the hanging rod 10 is provided with a threaded portion (not labeled) on which the nut 100 is threadedly connected.

Specifically, in the installation process, after the hanging rod 10 is inserted into the corresponding hook 41, the free end of the hanging rod 10 extends out of the hook 41, and then the nut 100 is screwed to the free end of the hanging rod 10, so that the hanging rod 10 is locked by screwing the nut 100, and the installation reliability is improved.

In some embodiments of the present application, there may be a plurality of ways for the specific structural form of the hook 41, and preferably, the hook 41 may be formed on the hoisting support 4 as an integral structure, specifically, two sides of the hoisting support 4 are respectively provided with a hanging plate 43 extending downwards, and one side of the hanging plate 43 is provided with a notch structure, and the notch structure forms the hook 41.

In the process of processing the hoisting bracket 4, the edge is bent to form the suspension plate 43, and then, a notch structure is formed on the suspension plate 43 by adopting a machining method such as punching to form the hook 41. The hook 41 is integrally formed on the lifting support 4, so that the connection strength between the hook 41 and the lifting support 4 is higher.

For the hoisting support 4, in some embodiments, in order to reduce the height space occupied by the hoisting support 4, the hoisting support 4 is integrally of a plate-shaped structure, and is configured with a concave-convex structure or a reinforcing rib structure to enhance the structural strength of the hoisting support 4.

In some embodiments of the present application, an upwardly protruding stop portion 44 is provided at the entrance of the notch structure.

Specifically, during the process of inserting the hanging rod 10 into the hook 41, the hanging rod 10 slides in from the entrance of the notch structure and goes over the stopper 44 to complete the installation. Under the action of the limiting part 44, the hanging rod 10 is prevented from being separated from the hook 41, and the mounting reliability is improved.

In a preferred embodiment, the inlet of the notch structure is a bell mouth for the convenience of installation for an operator. Specifically, the inlet of the notch structure adopts a horn mouth form, so that the hanging rod 10 can conveniently slide into the notch structure from a larger opening, and the hanging rod 10 can be accurately and conveniently hung on the hook 41.

In some embodiments of the present application, a decorative plate 5 is further included, and the decorative plate 5 is disposed on the housing 1 and covers the hanging rod 10 at the corresponding position.

Specifically, after the hanging rod 10 is hung on the hook 41, the free end of the hanging rod 10 is exposed outside the hook 41, and the nut 100 is also exposed outside the hook 41. And the whole appearance effect is optimized by arranging the decorative plate 5 on the shell 1 and shielding the hanging rod 10 and the nut 100 by the decorative plate 5.

In some embodiments, the trim panel 5 is snap-fitted to the housing 1 to facilitate quick and easy installation of the trim panel 5.

Specifically, in the actual installation process, after the hanging rod 10 is installed on the hook 41 and is screwed with the upper nut 100, the decorative plate 5 can be quickly assembled on the shell 1 in a clamping manner.

Wherein, a clamping groove 123 can be arranged on the shell 1, a claw 51 is arranged on the decorative plate 5, and the claw 51 is clamped in the clamping groove 123.

In addition, in order to facilitate accurate positioning, a positioning hole 122 is further formed in the housing 1, a positioning column 52 is further formed in the decorative plate 5, and the positioning column 52 is inserted into the positioning hole 122.

Specifically, the housing 1 is provided with a plurality of slots 123, and similarly, the decorative plate 5 is provided with a corresponding number of claws 51. When assembling the decorative plate 5, the positioning column 52 is inserted into the positioning hole 122, then the decorative plate 5 is pushed towards the housing 1, and the clamping claw 51 is accurately clamped in the clamping groove 123 under the guiding action of the positioning column 52

In some embodiments of the present application, the shell 1 includes the panel beating roof 11 and the casing, is provided with the peg 10 on the panel beating roof 11, be provided with air intake 101 and air outlet 102 on the casing, indoor heat exchanger 2 and indoor fan 3 set up at the panel beating roof 11, the casing sets up on the panel beating roof 11 and covers indoor heat exchanger 2 and indoor fan 3.

Specifically, in order to improve the overall stability of the air-conditioning indoor unit, for the indoor heat exchanger 2 and the indoor fan 3, the indoor heat exchanger and the indoor fan are fixedly mounted on the sheet metal top plate 11, the sheet metal top plate 11 has enough structural strength to meet the requirements of bearing the parts such as the indoor heat exchanger 2 and the indoor fan 3, and the shell is mainly used for decoration and air inlet and outlet.

In some embodiments of the present application, in order to increase the air output of the second sub-air outlet 1022, the front side wall of the upper housing 12 is provided with an air outlet gap 121, the front side wall of the lower housing 13 is provided with a second sub-air outlet 1022, and the second sub-air outlet 1022 is arranged opposite to the air outlet gap 121.

Specifically, because indoor heat exchanger 2 and fan all install on the panel beating roof 11 of shell 1, the air current of following the output of indoor heat exchanger 2 can directly be followed the output of second sub-air outlet 1022 via air-out breach 121 to reduce the windage and improve the air supply volume.

In some embodiments of the present application, the casing 1 further includes an air inlet grille 14, and the air inlet grille 14 is disposed on a bottom surface of the lower housing 13 and covers the air inlet 101.

Specifically, the air inlet grille 14 is arranged on the bottom surface of the lower shell 13 to shield the air inlet 101, so that the appearance effect is improved, and the structure of the air inlet grille 14 can meet the requirement of smooth air inlet of the air inlet 101.

In other embodiments of the present application, the side walls of the lower housing 13 surround the outside of the side walls of the upper housing 12.

Specifically, for the upper casing 12 and the lower casing 13, during the assembling process, the lower casing 13 will surround the outside of the upper casing 12 from the lower part of the upper casing 12, so that the user can see the whole appearance of the whole machine from the room to the upper side.

The assembly between the upper housing 12 and the lower housing 13 may be a clamping, a screw connection, and the like, which is not limited and described herein.

In some embodiments of the present application, in order to reduce the externally exposed screws, a clamping manner is preferably adopted, specifically, a side wall of the lower housing 13 is provided with a guide protrusion 131 and a catch 132, a side wall of the upper housing 12 is provided with a guide groove 124 and a limiting hole 125, the guide protrusion 131 is inserted into the guide groove 124, and the catch 132 is clamped in the limiting hole 125.

Specifically, in the assembling process, the upper shell 12 is disposed on the sheet metal top plate 11, and the fixing manner of the upper shell and the sheet metal top plate can adopt conventional connection manners such as screws. And the lower housing 13 is guided and installed by the cooperation of the guide protrusion 131 and the guide groove 124, and finally, the latch 132 is clamped in the limiting hole 125.

Under the effect of buckle 132 and spacing hole 125, can ensure firm connection between upper casing 12 and lower casing 13, simultaneously, because the parcel of lower casing 13 is in the outside of upper casing 12 for whole outward appearance need not the screw and shows.

In some embodiments of the present application, since the indoor heat exchanger 2 needs to be connected to the refrigerant pipeline, and the indoor fan 3 needs to be connected to the cable, in order to facilitate the outward leading and implement the requirement of hiding the wiring, a channel 126 for laying the pipeline may be provided on the upper housing 12, and the channel 126 is close to the rear sidewall of the upper housing 12.

Specifically, in the installation process, the refrigerant pipeline and the cable are led out from the upper shell 12 and are wired through the channel 126, the refrigerant pipeline and the cable are located in the channel 126, exposure of the pipeline is reduced, on one hand, the overall appearance effect is optimized, on the other hand, safe and reliable wiring of the pipeline can be guaranteed, and the later-stage use safety is improved.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims (10)

1. An indoor unit of an air conditioner for connecting an outdoor unit of an air conditioner, comprising:

the air conditioner comprises a shell, wherein an air inlet and an air outlet are formed in the shell, the air outlet comprises a first sub air outlet and a second sub air outlet, the shell comprises an upper shell and a lower shell, the lower shell is arranged on the upper shell, the first sub air outlet and the air inlet are arranged on the bottom surface of the lower shell, and the second sub air outlet is arranged on the side wall of the lower shell;

an indoor heat exchanger disposed in the housing;

an indoor fan disposed in the housing.

2. An indoor unit of an air conditioner according to claim 1, wherein the indoor heat exchanger is of a U-shaped structure, the indoor heat exchanger is half-enclosed outside the indoor fan, the first sub-outlet and the second sub-outlet are arranged in an outside area of the indoor heat exchanger, and the air inlet is arranged in an inside area of the indoor heat exchanger.

3. An indoor unit of an air conditioner according to claim 2, further comprising a water pump disposed at a position of the casing near the front side wall, the water pump being located between the indoor heat exchanger and the indoor fan.

4. An indoor unit of an air conditioner as claimed in claim 2, wherein the lower surface of the lower casing is further provided with an access opening on which a detachable access cover is provided; the upper shell is provided with a controller, and the controller is arranged opposite to the access hole.

5. The indoor unit of claim 1, wherein the casing further comprises an air inlet grille disposed on a bottom surface of the lower casing and covering the air inlet.

6. An indoor unit of an air conditioner according to claim 1, wherein the side wall of the lower casing is enclosed outside the side wall of the upper casing.

7. An indoor unit of an air conditioner according to claim 6, wherein a guide protrusion and a catch are provided on a side wall of the lower casing, a guide groove and a limit hole are provided on a side wall of the upper casing, the guide protrusion is inserted into the guide groove, and the catch is caught in the limit hole.

8. An indoor unit of an air conditioner according to claim 6, wherein a passage for piping is provided in the upper casing, the passage being adjacent to a rear side wall of the upper casing.

9. The indoor unit of an air conditioner as claimed in claim 1, wherein the casing further comprises a sheet metal top plate, a hanging rod is arranged on the sheet metal top plate, the sheet metal top plate is arranged on the top of the upper casing, the indoor heat exchanger and the indoor fan are arranged on the sheet metal top plate,

the air-conditioning indoor unit further comprises a hoisting support, and a plurality of hooks are respectively arranged on two sides of the hoisting support; wherein the hanging rods are used for being inserted into the corresponding hooks.

10. An indoor unit of an air conditioner according to claim 9, wherein hanging plates extending downward are respectively provided on both sides of the lifting bracket, and a notch structure is provided on one side of each hanging plate, and the notch structure forms the hook.

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