CN215490034U - Air conditioner indoor unit and air conditioning system - Google Patents

Abstract

The utility model discloses an air conditioner indoor unit and an air conditioning system. The air conditioner indoor unit comprises a fresh air power component, a shell component and a filtering component; the fresh air power assembly is arranged in the shell assembly and used for introducing outdoor air into a room, and the fresh air power assembly is provided with a first fresh air outlet; a second fresh air outlet communicated with the first fresh air outlet is arranged on the shell assembly, and an installation part is arranged on the edge of the second fresh air outlet on the shell assembly; the filtering component can cover the second fresh air outlet and is detachably connected with the installation part. This machine and air conditioning system in air conditioning can protect the new trend part, and with low costs.

Description

Air conditioner indoor unit and air conditioning system

Technical Field

The present disclosure relates to the field of electronic devices, and in particular, to an air conditioner indoor unit and an air conditioning system.

Background

At present, along with the improvement of production level, people have stronger and stronger requirements on healthy air in relatively closed spaces such as rooms. Therefore, people often replace the indoor air by using the fresh air power assembly so as to improve the indoor air quality.

In the correlation technique, the air-conditioning indoor unit provided with the fresh air power assembly can be provided with a second fresh air outlet usually, and the second fresh air outlet is opened or closed through a sliding door, so that the second fresh air outlet can be closed when fresh air is not used, and the effect of protecting a fresh air component is achieved. However, the arrangement of the sliding door results in a complex structure and high cost of the indoor unit of the air conditioner.

SUMMERY OF THE UTILITY MODEL

The utility model provides an air conditioning indoor unit and air conditioning system can protect new trend part, and with low costs.

The technical scheme is as follows:

according to a first aspect of the embodiments of the present disclosure, an indoor unit of an air conditioner is provided, which includes a fresh air power assembly, a casing assembly, and a filtering assembly; the fresh air power assembly is arranged in the shell assembly and used for introducing outdoor air into a room, and the fresh air power assembly is provided with a first fresh air outlet; a second fresh air outlet communicated with the first fresh air outlet is arranged on the shell assembly, and an installation part is arranged on the edge of the second fresh air outlet on the shell assembly; the filtering component can cover the second fresh air outlet and is detachably connected with the installation part.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

when this machine uses in the air conditioning, can dismantle the setting on casing assembly's lateral wall with filtering component through the installation department to can cover the export of second new trend, and then utilize filtering component can effectively block debris, insect etc. and export through the second new trend, and export the entering new trend power component through first new trend, avoid new trend power component inside to be polluted. And the filter assembly can be detachably arranged on the outer side wall of the shell assembly, so that the cost is low, and the filter assembly is convenient to disassemble and assemble.

The technical solution of the present disclosure is further explained below:

in one embodiment, the filter assembly comprises an installation part and a filter screen, the installation part is detachably connected with the installation part, the installation part is provided with a hollow hole, and the filter screen is fixedly connected with the installation part and used for covering the hollow hole.

In one embodiment, the filter screen is provided with at least one of a mosquito repelling layer, an ant repelling layer and a cockroach repelling layer.

In one embodiment, the mounting portion is slidably coupled to the mounting member.

In one embodiment, the mounting portion includes a slide rail protruding from an outer sidewall of the housing assembly and forming a sliding groove slidably connected to the mounting member.

In one embodiment, the number of the slide rails is two, and the slide rails are oppositely arranged at the outer edge of the second fresh air outlet, so that the slide grooves of the two slide rails are oppositely arranged; the installed part can be arranged between the sliding grooves of the two sliding rails in a sliding mode.

In one embodiment, the mounting member includes a guide portion for guiding into the chute, the guide portion having a rounded or reverse-tapered configuration.

In one embodiment, the mounting part is provided with at least two first bulges which are arranged at intervals along the length direction of the mounting part, and the first bulges are abutted against the inner wall of the sliding groove; and/or, the inner wall of spout is equipped with along its length direction interval set up two at least second protruding, and the second is protruding to offset with the installed part.

In one embodiment, the outer side wall of the shell assembly is further provided with a return air inlet, and the second fresh air outlet and the return air inlet are arranged on the same side.

In one embodiment, the housing assembly includes a middle frame, and the second fresh air outlet and the return air inlet are disposed on the return air side wall and on the middle frame.

According to a second aspect of the embodiments of the present disclosure, there is also provided an air conditioning system, including an outdoor unit of an air conditioner and the indoor unit of an air conditioner as described above, where the outdoor unit of the air conditioner is matched with the indoor unit of the air conditioner, so that the indoor unit of the air conditioner can provide temperature-regulated gas.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

when the air conditioning system is used, the requirement of indoor fresh air ventilation of people is met, and then the air conditioning system is matched with an air conditioner outdoor unit to provide temperature adjusting gas and fresh air gas for indoor and other closed spaces so as to improve the indoor life quality of people.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

Brief description of the drawingsthe accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not intended to limit the disclosure.

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic diagram illustrating a separation of a casing assembly and a filter assembly of an indoor unit of an air conditioner according to an embodiment.

Fig. 2 is a partially enlarged schematic view of a shown in fig. 1.

Fig. 3 is a schematic view of the filter assembly shown in fig. 1.

Fig. 4 is an assembly view of a casing assembly and a filter assembly of the indoor unit of the air conditioner shown in fig. 1.

Fig. 5 is a partially enlarged schematic view of B shown in fig. 4.

Fig. 6 is a schematic structural diagram of a middle frame shown in an embodiment.

FIG. 7 is a schematic diagram of an air conditioning system in one embodiment.

Description of reference numerals:

10. an air-conditioning indoor unit; 100. a housing assembly; 110. a second fresh air outlet; 120. an installation part; 121. a slide rail; 101. a chute; 130. an air return inlet; 140. a middle frame; 150. a panel; 200. a filter assembly; 210. a mounting member; 211. hollowing out holes; 212. a guide portion; 213. a first protrusion; 214. a force application part; 220. a filter screen; 300. a fresh air power component; 310. a first fresh air inlet; 20. an air conditioner outdoor unit; 30. a wall body; 40. and a control device.

Detailed Description

For the purpose of making the purpose, technical solutions and advantages of the present disclosure more apparent, the present disclosure will be described in further detail below with reference to the accompanying drawings and detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the disclosure, are intended for purposes of illustration only and are not intended to limit the scope of the disclosure.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein in the description of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

The air conditioning system is used as indoor temperature adjusting equipment, occupies an increasingly important position in the life of people, and brings healthy air for the life of people. The air conditioning systems are various in types and brands at present, so that consumers can select a large number of air conditioning systems, how to obtain the favor of the consumers is achieved, the product competitiveness is improved, and the problem that air conditioning system manufacturers attach more and more importance is solved.

At present, an air conditioning system comprises an air conditioning indoor unit, and a fresh air power assembly is arranged in part of the air conditioning indoor unit to replace indoor air so as to improve indoor air quality.

However, in the related art, the second fresh air outlet is opened or closed through the sliding door, so that when the fresh air is not used, the second fresh air outlet can be closed, and the effect of protecting the fresh air part is achieved. However, the arrangement of the sliding door results in a complex structure and high cost of the indoor unit of the air conditioner.

Based on this, this disclosure provides an air conditioning indoor set, can protect new trend part, and with low costs.

For better understanding of the air conditioning indoor unit of the present disclosure, the following structural drawings are set forth. As shown in fig. 1 to 6, some embodiments of the indoor unit of an air conditioner are shown in a structural view. Fig. 1 is a schematic diagram illustrating a separation between a casing assembly and a filter assembly of an indoor unit of an air conditioner according to an embodiment. Fig. 2 is a partially enlarged schematic view of a shown in fig. 1. Fig. 3 is a schematic view of the filter assembly shown in fig. 1. Fig. 4 is an assembly view of a casing assembly and a filter assembly of the indoor unit of the air conditioner shown in fig. 1. Fig. 5 is a partially enlarged schematic view of B shown in fig. 4. Fig. 6 is a schematic structural diagram of a middle frame shown in an embodiment.

As shown in fig. 1 to 5, in an embodiment of the present disclosure, an air conditioning indoor unit 10 is provided, which includes a casing assembly 100, a filter assembly 200, and a fresh air power assembly 300. The fresh air power assembly 300 is disposed in the housing assembly 100, the fresh air power assembly 300 is used for introducing outdoor air into a room, and the fresh air power assembly 300 has a first fresh air outlet. The casing assembly 100 is provided with a second fresh air outlet 110 communicated with the first fresh air outlet, and the casing assembly 100 is provided with a mounting part 120 at the edge of the second fresh air outlet 110. The filter assembly 200 can cover the second fresh air outlet 110 and is detachably connected to the mounting portion 120.

When the air-conditioning indoor unit 10 is used, the filter assembly 200 is detachably arranged on the outer side wall of the shell assembly 100 through the mounting portion 120 and can cover the second fresh air outlet 110, so that sundries, insects and the like can be effectively prevented from passing through the second fresh air outlet 110 by the filter assembly 200 and enter the fresh air power assembly 300 through the first fresh air outlet, the inside of the fresh air power assembly 300 is prevented from being polluted, and the implementation cost is low. Moreover, the filter assembly 200 is detachably disposed on the outer sidewall of the housing assembly 100, so that the filter assembly 200 can be conveniently detached and cleaned, and can be conveniently mounted after being cleaned.

In addition, the filter assembly 200 is disposed on the outer side wall of the housing assembly 100, so that the installation of the devices inside the housing assembly 100 is not disturbed, which is beneficial to further reducing the cost. Moreover, the installation mode of the filter assembly 200 is simple and reliable, and the occupied space is small.

As shown in fig. 3, in some embodiments, the filter assembly 200 includes a mounting member 210 and a filter 220, the mounting member 210 is detachably connected to the mounting portion 120, the mounting member 210 has a hollow hole 211, and the filter 220 is fixedly connected to the mounting member 210 for covering the hollow hole 211. So, be fixed in installed part 210 with filter screen 220, be convenient for stereotype to utilize installed part 210 and installation department 120 to dismantle and be connected, and then can cover second new trend export 110 reliably.

Optionally, in some embodiments, the filter screen 220 is provided with at least one of a mosquito repellent layer, an ant repellent layer, and a cockroach repellent layer. So, can further prevent that the insect from getting into new trend power component 300 through second new trend export 110 in, further improve the safeguard effect.

In some embodiments, the filter screen 220 is provided with a mosquito repellent layer, an ant repellent layer, and a cockroach repellent layer. Therefore, mosquitoes, ants, cockroaches and the like can be prevented from entering the fresh air power assembly 300 through the second fresh air outlet 110.

It should be noted that, the implementation manner of the "mounting member 210 is detachably connected to the mounting portion 120" may be various, including but not limited to, a snap connection, a screw connection, a hook and loop fastener, and the like.

In addition to any of the embodiments of mount 210 described above, in some embodiments, mount 120 is slidably coupled to mount 210. Therefore, the installation part 120 and the installation part 210 can be separated or installed in a sliding mode, the two parts are matched more tightly, the second fresh air outlet 110 can be better covered, and sundries or insects are prevented from entering the second fresh air outlet 110 from a matching gap between the two parts.

Further, as shown in fig. 2 to 5, in some embodiments, the mounting portion 120 includes a sliding rail 121, the sliding rail 121 is disposed to protrude from an outer sidewall of the housing assembly 100, and is formed with a sliding groove 101 slidably connected to the mounting portion 210. So, set up slide rail 121 protrusion in the lateral wall to form spout 101, the quick assembly disassembly of the installed part 210 of being convenient for.

The "sliding groove 101" may be formed directly on the sliding rail 121, or may be formed by matching the sliding rail 121 with an outer side wall, which is not limited herein.

Optionally, as shown in fig. 2 to 5, in some embodiments, two sliding rails 121 are included, and are oppositely disposed on the outer edge of the second fresh air outlet 110, so that the sliding grooves 101 of the two sliding rails 121 are oppositely disposed; the mounting member 210 is slidably disposed between the sliding grooves 101 of the two sliding rails 121. Thus, the two slide rails 121 are used for being matched with the mounting part 210, so that the mounting part 210 is fixed firmly and is convenient to disassemble and assemble.

As shown in fig. 3, in some embodiments, the mounting member 210 includes a guide portion 212 for guiding the chute 101, and the guide portion 212 has a rounded or inverted-cone structure. Thus, the guide portion 212 facilitates the introduction of the mounting member 210 into the chute 101, facilitating the installation.

As shown in fig. 3, in some embodiments, the mounting member 210 is provided with a force application portion 214, so that the user can conveniently detach the mounting member 210 through the force application portion 214.

The force application portion 214 includes a handle, a gripping protrusion, a gripping groove, or the like.

In addition to any of the above-mentioned embodiments of the sliding chute 101, as shown in fig. 3, in some embodiments, the mounting member 210 is provided with at least two first protrusions 213 spaced along the length direction thereof, and the first protrusions 213 abut against the inner wall of the sliding chute 101. So, utilize first arch 213 to offset with the inside of spout 101, be favorable to reducing the cooperation frictional force, make things convenient for installed part 210 and spout 101 quick assembly disassembly cooperation.

And/or, in some embodiments, the inner wall of the chute 101 is provided with at least two second protrusions (not shown) spaced along the length thereof, the second protrusions abutting against the mounting member 210. In a similar way, the second protrusion is abutted to the inside of the mounting part 210, so that the friction force is reduced, and the mounting part 210 and the sliding groove 101 are conveniently assembled and disassembled.

It should be noted that the "first protrusion 213" may be "a part of the mounting member 210", that is, the "first protrusion 213" is integrally formed with "the other part of the mounting member 210"; the "first protrusion 213" may be made separately from the "other part of the mounting member 210" and may be combined with the "other part of the mounting member 210" to form a single body.

The "second protrusion", "certain body" and "certain part" may be a part of the corresponding "component", that is, "certain body" and "certain part" are integrally formed with other parts of the "component" to manufacture; the "part" can be made separately from the "other part" and then combined with the "other part" into a whole. The expression "a certain body" or "a certain portion" in the present disclosure is only one example, and is not intended to limit the scope of the present disclosure, so long as the above features are included and the same function is understood to be equivalent to the present disclosure.

In addition to any of the above embodiments, as shown in fig. 5, in some embodiments, the outer side wall of the housing assembly 100 is further provided with a return air inlet 130, and the second fresh air outlet 110 and the return air inlet 130 are disposed on the same side. So, this disclosure sets up with one side second new trend export 110 and return air import 130, can mix at least part of new trend gas and return air gas and introduce the heat transfer chamber after, can carry out the heat transfer back, flow from the return air export again, can avoid when indoor outer difference in temperature is too big, new trend gas directly enters into indoor can cause too cold or too hot, can improve user experience.

As shown in fig. 5 and 6, in some embodiments, the housing assembly 100 includes a middle frame 140, and the second fresh air outlet 110 and the return air inlet 130 are disposed on the return air side wall and on the middle frame 140. In this manner, mounting portion 120 may be integrated into center frame 140 to facilitate positioning filter assembly 200 on center frame 140.

As shown in fig. 5 and 6, optionally, the housing assembly 100 further includes a panel 150, and the panel 150 is rotatably disposed on the middle frame 140 to shield at least a portion of the middle frame 140. Thus, the panel 150 and the middle frame 140 cooperate to make the appearance of the housing assembly 100 more aesthetic.

It should be noted that the "middle frame 140" may be one of the parts of the module "housing assembly 100", that is, assembled with the "other components of the housing assembly 100" into one module, and then assembled modularly; or may be separate from the "other components of the housing assembly 100" and may be separately mounted, i.e., may be integrated with the "other components of the housing assembly 100" in the present device.

Equivalently, the components included in the disclosure, the "assembly", and the "air-conditioning indoor unit 10" can be flexibly combined, i.e., can be produced in a modularized manner according to the actual situation, and can be assembled in a modularized manner as an independent module; the modules may be assembled separately, and one module may be constructed in the present apparatus. The division of the above-mentioned components in the present disclosure is only one embodiment, which is convenient for reading and not limiting the scope of protection of the present disclosure, and the technical solutions equivalent to the present disclosure should be understood as if they are included and the functions are the same.

The fresh air power assembly 300 (see fig. 7) includes, but is not limited to, a negative pressure generator, an air compressor, a centrifugal fan, an axial fan, a bladeless fan, and other devices capable of introducing outdoor air into a room.

As shown in fig. 7, which is a schematic diagram of an air conditioning system in an embodiment, in an embodiment of the present disclosure, an air conditioning system is further provided, which includes an outdoor unit 20 and the indoor unit 10, where the outdoor unit 20 and the indoor unit 10 cooperate to enable the indoor unit 10 to provide temperature-regulated air.

When the air conditioning system is used, the requirement of indoor fresh air ventilation of people is met, and then the air conditioning system is matched with the air conditioner outdoor unit 20 to provide temperature adjusting gas and fresh air gas for indoor and other closed spaces so as to improve the indoor life quality of people. Therefore, the air conditioning system can provide cooling airflow or heating airflow for a user and can also provide outdoor air so as to improve the oxygen content of the indoor air. Can provide a good air environment for people's indoor life, can improve user experience, more can obtain consumer's favor, have better product competitiveness.

As shown in fig. 7, in some embodiments, the air conditioning system further includes a control module 40 on the air conditioning indoor unit 10, and the control module 40 is communicatively connected to the air conditioning indoor unit 10 and the air conditioning outdoor unit 20. In this way, the control module 40 is used to facilitate control and interaction with a user, such as controlling the start or stop of the fresh air power assembly 300; or controlling the start and stop of the driver, and the like; or adjusting the temperature of the temperature-adjusting gas and the air volume.

The control module includes a main control chip, which at least includes a Processor, and the Processor may be a Micro-controller Unit (MCU), a Central Processing Unit (CPU), or a Digital Signal Processor (DSP).

The control module generally controls the overall operation of the air conditioning system, such as opening and closing control, heating control, cooling control, dehumidification control, fresh air start or shut-off, air volume regulation control, and the like. The control module may include one or more processors to execute instructions to perform all or a portion of the steps of the methods described above. In addition, the control module can include one or more modules that facilitate interaction between the control module and other components. For example, the control circuit board also includes a communication unit for communicating with other modules, such as the new wind power assembly 300 of the present disclosure.

In one embodiment, the control module further comprises a memory configured to store various types of data to support operation in the air conditioning system. Examples of such data include instructions for any application or method operating on the air conditioning system, air volume size data, heating data, cooling data, fresh air intake data, and the like. The memory may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, and the like.

The specific implementation manner of the air conditioner outdoor unit 20 and the air conditioner indoor unit 10 cooperating to enable the air conditioner indoor unit 10 to provide the temperature-regulated air may be various, and may be implemented in the conventional art, which is not limited herein.

In the description of the present disclosure, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present disclosure and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present disclosure.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include at least one of the feature. In the description of the present disclosure, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise.

In the present disclosure, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In the present disclosure, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to," "disposed on," "secured to," or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, when one element is regarded as being fixedly connected with the other element in a transmission manner, the two elements can be detachably connected and also can be fixed in an undetachable manner, power transmission can be achieved, such as sleeving, clamping, integrally-formed fixing, welding and the like, and the traditional technology can achieve the purpose of no encumbrance. When an element is perpendicular or nearly perpendicular to another element, it is desirable that the two elements are perpendicular, but some vertical error may exist due to manufacturing and assembly effects. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show several embodiments of the present disclosure, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the concept of the present disclosure, and these changes and modifications are all within the scope of the present disclosure.

Claims (11)

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

the fresh air power assembly is used for introducing outdoor air into a room and is provided with a first fresh air outlet; a second fresh air outlet communicated with the first fresh air outlet is formed in the shell assembly, and an installation part is arranged on the edge of the second fresh air outlet on the shell assembly;

the indoor unit of the air conditioner further comprises a filtering assembly capable of covering the second fresh air outlet, and the filtering assembly is detachably connected with the mounting portion.

2. An indoor unit of an air conditioner according to claim 1, wherein the filter assembly includes a mounting member and a filter net, the mounting member is detachably connected to the mounting member, the mounting member is provided with a hollow hole, and the filter net is fixedly connected to the mounting member and covers the hollow hole.

3. An indoor unit of an air conditioner according to claim 2, wherein the filter net is provided with at least one of a mosquito repellent layer, an ant repellent layer, and a cockroach repellent layer.

4. An indoor unit of an air conditioner according to claim 2, wherein the mounting part is slidably connected to the attachment part.

5. An indoor unit of an air conditioner according to claim 4, wherein the mounting unit includes a slide rail provided to protrude from an outer side wall of the casing assembly and formed with a slide groove slidably connected to the mounting unit.

6. An indoor unit of an air conditioner according to claim 5, wherein the slide rails include two slide rails and are oppositely arranged at the outer edge of the second fresh air outlet, so that the slide grooves of the two slide rails are oppositely arranged; the mounting part can be arranged between the sliding grooves of the two sliding rails in a sliding mode.

7. An indoor unit of an air conditioner according to claim 5, wherein the mounting member includes a guide portion for guiding into the slide groove, and the guide portion has a rounded or reverse-tapered configuration.

8. An indoor unit of an air conditioner according to claim 5, wherein the mounting member is provided with at least two first protrusions arranged at intervals along a length direction thereof, and the first protrusions abut against an inner wall of the slide groove; and/or, the inner wall of spout is equipped with along its length direction interval set up at least two second protruding, the second protruding with the installed part offsets.

9. The indoor unit of any one of claims 1 to 8, wherein the outer side wall of the casing assembly is further provided with a return air inlet, and the second fresh air outlet and the return air inlet are arranged on the same side.

10. The indoor unit of claim 9, wherein the casing assembly comprises a middle frame, and the second fresh air outlet and the return air inlet are disposed on the return air side wall and on the middle frame.

11. An air conditioning system comprising an outdoor unit and the indoor unit of any one of claims 1 to 10, the outdoor unit being engaged with the indoor unit so that the indoor unit can supply temperature-controlled air.

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