CN215909338U

CN215909338U - Indoor unit and air conditioner with same

Info

Publication number: CN215909338U
Application number: CN202122305698.6U
Authority: CN
Inventors: 许李威; 黄煜鹏; 贾冰冰; 成凯
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-02-25
Anticipated expiration: 2031-09-23

Abstract

The utility model provides an indoor unit and an air conditioner with the same, wherein the indoor unit comprises: the casing, the casing has first wind gap and second wind gap, is provided with the guide part in the casing, and the guide part is located between first wind gap and the second wind gap, and the guide part is used for discharging the casing from another one of first wind gap and second wind gap after the partial air current that gets into the casing from one of first wind gap and second wind gap leads through the guide part twice at least. The direction of the gas is guided by the guide part, and partial gas flow entering the shell is guided by the guide part at least twice, so that the gas guide part can play a role in guiding the flow to the greatest extent, the turbulence degree of the gas is weakened, the strength of vortex noise is reduced, and the tone quality of the vortex noise is improved.

Description

Indoor unit and air conditioner with same

Technical Field

The utility model relates to the technical field of indoor unit equipment, in particular to an indoor unit and an air conditioner with the indoor unit.

Background

With the increasing living standard of people and the increasing requirements on living quality, most users prefer air conditioners with lower noise values when selecting the air conditioners. At present, many air conditioners have the problems of high noise value, difficult sound quality and the like when the wind gear is high, great troubles are brought to the life of people, part of the air conditioners can only select to reduce the rotating speed of the through-flow fan blades in order to reduce the noise of the air conditioners, and the purpose of reducing the noise is achieved by sacrificing the air volume.

At present, most of domestic researches on air conditioner noise reduction are only theoretical researches, and the structures of partial technologies are complex, the cost is high, and the mass production of air conditioners is not facilitated; part research utilizes special sound generating mechanism to eliminate the partial noise of air conditioner backward based on characteristics such as amplitude, wavelength of noise, not only greatly increased the cost, has certain noise pollution risk moreover, is difficult to use in actual air conditioning technology.

Although an air conditioner noise reduction device and a noise reduction method are disclosed in the prior art, another noise is emitted according to a noise reduction algorithm through a noise acquisition module to offset and reduce the noise of an air conditioner, the method not only increases the cost of the air conditioner, but also has certain risk of noise pollution. In addition, the air conditioner noise reduction air duct in the prior art is formed by butting a plurality of short tube bodies, so that the pressure resistance of upper and lower side plates of the duct to passing air flow is enhanced, and the noise generated by vibration is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide an indoor unit and an air conditioner with the indoor unit, and aims to solve the problem that a noise reduction air duct in the prior art is complex in structure.

In order to achieve the above object, according to one aspect of the present invention, there is provided an indoor unit including: the casing, the casing has first wind gap and second wind gap, is provided with the guide part in the casing, and the guide part is located between first wind gap and the second wind gap, and the guide part is used for discharging the casing from another one of first wind gap and second wind gap after the partial air current that gets into the casing from one of first wind gap and second wind gap leads through the guide part twice at least.

Further, the guide portion includes a convex portion and a concave portion, and the convex portion and the concave portion are provided at intervals in a height direction of the housing.

Further, the protruding portion is plural, the recessed portion is plural, and the plurality of protruding portions and the plurality of recessed portions are alternately arranged in the height direction of the housing.

Further, the indoor unit further includes: the evaporator is arranged in the shell, the shell is divided into a first cavity and a second cavity by the evaporator, the first air opening is communicated with the first cavity, the second air opening is communicated with the second cavity, the guide portion is located in the first cavity, the plurality of protruding portions are convexly arranged towards one side of the evaporator, and the plurality of recessed portions are concavely arranged far away from one side of the evaporator.

Further, a projection height of at least one of the plurality of projection portions in the thickness direction of the case is set differently from projection heights of the remaining projection portions in the thickness direction of the case, and/or a recess depth of at least one of the plurality of recess portions in the thickness direction of the case is set differently from recess depths of the remaining recess portions in the thickness direction of the case.

Furthermore, the surface of each protruding part is an arc surface, the surface of each recessed part is an arc surface, and the joints of the adjacent protruding parts and the adjacent recessed parts are in arc surface transition.

Further, the lateral wall of first cavity includes the chamber wall that sets up with the evaporimeter is relative, and the chamber wall is close to first wind gap one side and is provided with the wind channel, and the chamber wall includes: the first end of the first assembly section is arranged close to one side of the second air port, the first assembly section is arranged along the vertical direction, and the plurality of convex parts and the plurality of concave parts are arranged on the first assembly section; and the surface of one side of the second component section, which faces the evaporator, and the vertical surface are arranged in a way of forming an included angle.

Further, a fan is arranged in the air duct, the air duct comprises a diffusion section, a first end of the diffusion section is connected with a throat of the air duct, a second end of the diffusion section is gradually far away from the fan along the circumferential direction of the fan, a second end of the second composition section is connected with a second end of the diffusion section, a connecting line from the first end of the second composition section to the second end of the second composition section, a connecting line from the first end of the diffusion section to the first end of the second composition section, and a connecting line from the second end of the second composition section to the first end of the diffusion section form a triangular area located outside the first cavity.

Further, the plane of the inner surface of the second component section is arranged parallel to the plane of the evaporator.

Further, the indoor unit further includes: the division plate is arranged in the first cavity and connected with at least one of the first component section and the second component section, the division plate extends along the height direction of the shell, and one side of the division plate, which is far away from the first component section or the second component section, is arranged at a distance from the surface of the evaporator.

Further, the partition plate is provided in plurality, and the plurality of partition plates are provided at intervals in the width direction of the housing.

Further, the guide portion is integrally formed with the housing, and/or the partition plate is integrally formed with the housing.

Further, the clearance between the vortex throat and the fan is smaller than the clearance between the diffuser section and the fan.

Furthermore, the indoor unit has an upper air outlet mode and a lower air outlet mode, when the indoor unit is in the upper air outlet mode, the first air port is an air outlet, the second air port is an air inlet, and when the indoor unit is in the lower air outlet mode, the first air port is an air inlet, and the second air port is an air outlet.

According to another aspect of the present invention, an air conditioner is provided, which includes an indoor unit, and the indoor unit is the indoor unit described above.

By applying the technical scheme of the utility model, the direction of the air is guided by the guide part, part of the air flow entering the shell is guided by the guide part at least twice, the flow velocity of the air flow can be reduced to the maximum extent, so that the frequency of the air flow beaten by the fan part is reduced, the pneumatic noise is reduced, the air flow entering the shell is guided twice at least, the noise formed by the air flow is transmitted to the outside of the shell after multi-section reflection under the action of the guide part, the energy of the air flow noise is effectively reduced, the total noise value is effectively reduced, and the guide part arranged in the shell can play a role of strengthening the shell strength.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

figure 1 shows a schematic view of the structure of a first embodiment of the indoor unit according to the utility model;

figure 2 shows a schematic view of the structure of a second embodiment of the indoor unit according to the utility model;

figure 3 shows a schematic view of the structure of a third embodiment of the indoor unit according to the utility model;

figure 4 shows a schematic view of a simulation of a first embodiment of the triangular area of the indoor unit according to the utility model;

figure 5 shows a schematic view of a simulation of a second embodiment of the triangular area of the indoor unit according to the utility model;

figure 6 shows a schematic view of a simulation of a third embodiment of the triangular area of the indoor unit according to the utility model.

Wherein the figures include the following reference numerals:

10. a housing; 11. a first tuyere; 12. a second tuyere;

20. a guide portion; 21. a boss portion; 22. a recessed portion;

30. an evaporator; 31. a first cavity; 311. a cavity wall surface; 3111. a first composition segment; 3112. a second composition segment; 32. a second cavity;

40. an air duct; 41. a diffusion section; 42. a throat;

50. a fan;

60. a partition plate;

70. a triangular region.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1 to 6, according to an embodiment of the present application, an indoor unit is provided.

Specifically, as shown in fig. 1, the indoor unit includes a casing 10, the casing 10 has a first air opening 11 and a second air opening 12, a guide portion 20 is disposed in the casing 10, the guide portion 20 is located between the first air opening 11 and the second air opening 12, and the guide portion 20 is configured to guide a portion of an air flow entering the casing 10 from one of the first air opening 11 and the second air opening 12 through the guide portion 20 at least twice and then discharge the air flow out of the casing 10 from the other one of the first air opening 11 and the second air opening 12.

By applying the technical scheme of the utility model, the direction of the air is guided by the guide part 20, part of the air flow entering the shell 10 is guided by the guide part 20 at least twice, the flow velocity of the air flow can be reduced to the maximum extent, so that the frequency of the air flow flapped by the fan part is reduced, the pneumatic noise is reduced, the air flow entering the shell 10 is guided twice at least, the noise formed by the air flow is transmitted to the outside of the shell 10 after being reflected in multiple sections under the action of the guide part 20, the energy of the air flow noise is effectively reduced, the total noise value is effectively reduced, and the guide part arranged in the shell 10 can strengthen the strength of the shell 10.

The guide portion 20 includes a convex portion 21 and a concave portion 22, and the convex portion 21 and the concave portion 22 are provided at intervals in the height direction of the housing 10. The design makes the noise that the air current produced form the multistage reflection in first cavity 31 like this, and when the noise was refracted in first cavity 31, the noise of different frequency, wavelength can produce the reflection of multi-angle when colliding to bellying 21 from different angles for the noise produces the discrete effect of dislocation in different directions, through the interior noise frequency spectrum of discrete first cavity 31, has effectively attenuated the energy of noise, has reduced pneumatic noise.

The number of the convex portions 21 is plural, the number of the concave portions 22 is plural, and the plural convex portions 21 and the plural concave portions 22 are alternately arranged in the height direction of the housing 10. The better the effect of the staggered discrete effect of the noise is, the pneumatic noise is effectively reduced, and the comfort of the air conditioner is improved.

The indoor unit further comprises an evaporator 30, the evaporator 30 is arranged in the casing 10, the casing 10 is divided into a first cavity 31 and a second cavity 32 by the evaporator 30, the first air opening 11 is communicated with the first cavity 31, the second air opening 12 is communicated with the second cavity 32, the guide portion 20 is located in the first cavity 31, the plurality of protruding portions 21 are convexly arranged towards one side of the evaporator 30, and the plurality of recessed portions 22 are concavely arranged away from one side of the evaporator 30. The arrangement enables at least part of the cavity wall surface of the first cavity 31 to be a corrugated cavity, so that the 'booming sound' generated by airflow is effectively reduced, and the use experience of a user is improved.

At least one of the plurality of convex portions 21 has a convex height in the thickness direction of the case 10 set differently from the convex height of the remaining convex portions 21 in the thickness direction of the case 10, and at least one of the plurality of concave portions 22 has a concave depth in the thickness direction of the case 10 set differently from the concave depth of the remaining concave portions 22 in the thickness direction of the case 10. The arrangement enables the guide part to reflect and reduce noise of different frequencies and wavelengths, further reduces pneumatic noise and improves the comfort of the air conditioner.

The surface of the convex part 21 is an arc surface, the surface of the concave part 22 is an arc surface, and the connection part of the adjacent convex part 21 and the concave part 22 is in arc surface transition. This arrangement not only enhances the strength of the housing 10, but also reduces the airflow resistance.

The side wall of the first cavity 31 includes a cavity wall 311 opposite to the evaporator 30, the side of the cavity wall 311 close to the first air inlet 11 is provided with an air duct 40, and the cavity wall 311 includes a first component 3111 and a second component 3112. The first end of first component section 3111 is close to second wind gap 12 one side and sets up, and first component section 3111 sets up along vertical direction, and a plurality of bellying 21 and a plurality of depressed part 22 set up on first component section 3111, and the first end of second component section 3112 is connected with the second end of first component section 3111, and the second end of second component section 3112 is connected with wind channel 40, and the surface of the orientation evaporimeter 30 one side of second component section 3112 has the angle with vertical face and sets up. The arrangement makes the second component section 3112 have a certain inclination, which can guide the gas flow direction of the upper inlet air, weaken the gas turbulence degree, and enlarge the volume of the middle air channel, thereby reducing the gas flow speed of the inlet air, reducing the generation of high-speed vortex, and reducing the aerodynamic noise.

The fan 50 is arranged in the air duct 40, the air duct 40 includes a diffuser section 41, a first end of the diffuser section 41 is connected with the scroll throat 42 of the air duct 40, a second end of the diffuser section 41 is gradually far away from the fan 50 along the circumferential direction of the fan 50, a second end of the second component section 3112 is connected with a second end of the diffuser section 41, a connecting line from the first end of the second component section 3112 to the second end of the second component section 3112, a connecting line from the first end of the diffuser section 41 to the first end of the second component section 3112, and a connecting line from the second end of the second component section 3112 to the first end of the diffuser section 41 form a triangular area 70 located outside the first cavity 31. In this embodiment, as shown in fig. 4, the formation of the triangular region 70 can play a role of guiding flow to the greatest extent, and the airflow driven by the rotation of the upper through-flow fan intensively flows along the slope of the ramp (the inner wall surface of the second component section 3112) to the lower through-flow fan region, so that not only the air volume can be increased, but also the separation of the airflow from the air duct structure is avoided and the air turbulence is reduced because the slope of the inner wall surface of the second component section 3112 is matched with the fan outlet angle, thereby reducing the strength of the eddy noise and playing a role of reducing the noise of the indoor unit.

The plane of the inner surface of the second constituent segment 3112 is arranged in parallel with the plane of the evaporator 30. When the air flow flows downwards along the second component section 3112, the air flow passing through the evaporator can be increased, and the heat exchange efficiency of the evaporator is further improved.

The indoor unit further includes a partition plate 60, the partition plate 60 is disposed in the first cavity 31, the partition plate 60 is connected to at least one of the first component section 3111 and the second component section 3112, the partition plate 60 extends along a height direction of the casing 10, and a side of the partition plate 60 away from the first component section 3111 or the second component section 3112 is disposed at a distance from a surface of the evaporator 30. The arrangement enables the partition plate 60 to separate the evaporator from the first cavity 31 formed at the panel, reduces the collision of air flow, increases the air inlet volume, enables the air outlet of the air conditioner to be more uniform, and improves the comfort of the air conditioner.

The partition plate 60 is provided in plurality, and the plurality of partition plates 60 are provided at intervals in the width direction of the housing 10. The first cavity 31 is divided by the plurality of partition plates 60, wherein the first cavity 31 is of a long and narrow structure, and the long and narrow first cavity 31 is divided, so that air flows at different positions are prevented from colliding with each other in a long and narrow air duct, the 'booming sound' generated in the first cavity 31 can be effectively reduced, the air volume is further increased, the air outlet of the air conditioner is more uniform, the noise generated by an indoor unit is reduced, and the comfort of the air conditioner is improved.

The guide 20 is integrally formed with the housing 10, and the partition plate 60 is integrally formed with the housing 10. The air conditioner is simple in structure, the guide part 20 and the partition plate 60 are integrated with the shell 10, the whole body is formed by injection molding, the manufacturing cost is low, the air conditioner can be widely applied to the air conditioner, the noise of the air conditioner can be effectively reduced, and the noise tone quality is improved.

The clearance between the throat 42 and the fan 50 is smaller than the clearance between the diffuser section 41 and the fan 50. The arrangement ensures the formation of the diffuser section 41, so that the airflow forms an airflow buffer zone at the diffuser section 41, the vortex generated by the sudden change section of the upper through-flow fan blade running at high speed can be effectively isolated, and the 'call' noise generated by the air conditioner is inhibited.

The indoor unit has an upper air-out mode and a lower air-out mode, when the indoor unit is in the upper air-out mode, the first air opening 11 is an air outlet, the second air opening 12 is an air inlet, and when the indoor unit is in the lower air-out mode, the first air opening 11 is an air inlet, and the second air opening 12 is an air outlet. The switching of air-out mode and air-out mode down is convenient for control in setting like this.

The indoor unit in the above embodiment may also be used in the technical field of air conditioning equipment, that is, according to another aspect of the present invention, there is provided an air conditioner, including an indoor unit, where the indoor unit is the indoor unit in the above embodiment.

Specifically, this application combines the production mechanism of noise in the air conditioner through a large amount of experiments, provides one kind and can have concurrently and fall the wind channel structure of making an uproar, drainage pressure boost, the uneven problem of solution air conditioner air-out, and its simple structure can solve the current problem that the structure is complicated, manufacturing cost is high that falls the wind channel existence of making an uproar, also does not have simultaneously and offsets the noise pollution risk that the air conditioner noise exists through another kind of noise. By applying the technical scheme of the utility model, the flow velocity of the gas in the middle air duct is reduced mainly by flow guiding and expansion, and the optimal flow guiding inclination is found by combining simulation with practical experiments, so that the generation of vortex is avoided and the aim of reducing the pneumatic noise of the air conditioner is fulfilled. In the embodiment, the air flow rate and the pressure of the upper air inlet are increased, so that the air inlet amount is increased, the air flow direction of the upper air inlet is guided through the proper slope gradient, and the air turbulence degree is weakened. Wherein, division board 60 reduces gaseous striking each other in the middle section wind channel through the drainage effect.

According to a specific embodiment of the present application, a streamline structure is adopted to extend the air inlet diffuser 41, and meanwhile, a convex guide part is arranged below the upper cross-flow fan blade, and a triangular area 70 is formed between the upper cross-flow fan blade and the lower cross-flow fan blade, so that a flow guiding effect can be maximally achieved. The lower edge of the ramp is of a pit structure, so that the volume of the middle air duct is enlarged.

According to another embodiment of the present application, a streamlined diffuser is adopted at the front end of the air duct below the upper cross-flow fan, the streamline at this position cannot be matched with the profile of the air duct 40, the fluid simulation is performed on the triangular flow guiding area, and the air volume data measured by practical experiments are combined, so that the upper cross-flow fan can assist air intake at a lower rotating speed when air is exhausted from the air conditioner, the airflow driven by the rotation of the upper cross-flow fan can intensively flow downwards along the slope of the ramp through the triangular area 70 of the present application, the air flow passing through the evaporator is increased, the simulation result is shown in fig. 5, and the air flow at the inner section of the cavity of the triangular area 70 is the largest. Meanwhile, the diversion inclination is matched with an outlet angle of the through-flow fan blade, so that the separation of the air flow of the upper air inlet section from an air channel structure can be avoided, and the generation of air vortex is reduced, thereby reducing the intensity of vortex noise and improving the sound quality of noise.

Because a certain refrigerating capacity is required and the length of the evaporator 30 is required, a long and narrow air duct structure is formed in the middle section of the air duct 40 between the upper cross-flow fan blade and the lower cross-flow fan blade, and when the air flow driven by the upper cross-flow fan blade in the low-speed rotation auxiliary air inlet process flows downwards along the slope of the triangular area 70, the air duct 40 has a long and narrow structure, so that the air flows at the left end and the right end easily collide at the middle section of the air duct 40, which not only reduces the air volume, but also increases the air turbulence degree, thus generating a 'booming sound' which is difficult to hear at the middle section of the air duct, and users are difficult to accept the sound. Three partition plates 60 are designed at the middle section of the long and narrow air duct, and the shapes of the partition plates 60 are not limited to triangular shapes, streamline shapes, shuttle shapes and the like and are mainly designed according to the shapes of the evaporators.

In another embodiment of the present application, the air duct segments may be provided with flow guiding structures with different slopes, which are not limited to the triangular region 70, but may be flow guiding structures similar to streamline, oval, etc.

According to an embodiment of the present application, the guide portion 20 in the first cavity 31 is not limited to a corrugated structure, but may be any structure that reduces noise energy by multi-stage reflection, such as multi-stage partition, cavity hole-digging noise reflection, etc.

According to another embodiment of the present application, a new flow guiding scheme may also be obtained by changing the slope of the inner wall surface of the second constituent segment 3112 to thereby change the flow guiding slope, by changing the protrusion position of the guide portion 20 of the flow guiding area of the segment of the air duct 40, and the like.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the utility model to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An indoor unit, comprising:

the air conditioner comprises a shell (10), wherein the shell (10) is provided with a first air opening (11) and a second air opening (12), a guide part (20) is arranged in the shell (10), the guide part (20) is located between the first air opening (11) and the second air opening (12), and the guide part (20) is used for discharging a part of air flow entering the shell (10) from one of the first air opening (11) and the second air opening (12) out of the shell (10) after being guided by the guide part (20) at least twice.

2. The indoor unit according to claim 1, wherein the guide portion (20) includes a protrusion (21) and a recess (22), and the protrusion (21) and the recess (22) are provided at intervals in a height direction of the casing (10).

3. The indoor unit according to claim 2, wherein the protruding portion (21) is plural, the recessed portion (22) is plural, and the protruding portions (21) and the recessed portions (22) are alternately arranged in a height direction of the casing (10).

4. The indoor unit according to claim 3, further comprising:

evaporimeter (30), evaporimeter (30) set up in casing (10), evaporimeter (30) will casing (10) are separated into first cavity (31) and second cavity (32), first wind gap (11) with first cavity (31) intercommunication, second wind gap (12) with second cavity (32) intercommunication, guide part (20) are located in first cavity (31), it is a plurality of bellying (21) orientation evaporimeter (30) one side sets up protrudingly, and is a plurality of depressed part (22) are kept away from evaporimeter (30) one side sets up with caving in.

5. The indoor unit according to claim 4, wherein a projection height of at least one of the plurality of projection portions (21) in the thickness direction of the casing (10) is set differently from a projection height of the remaining projection portions (21) in the thickness direction of the casing (10), and/or a recess depth of at least one of the plurality of recess portions (22) in the thickness direction of the casing (10) is set differently from a recess depth of the remaining recess portions (22) in the thickness direction of the casing (10).

6. The indoor unit of claim 3, wherein the surface of the protruding part (21) is an arc surface, the surface of the recessed part (22) is an arc surface, and the junction between the adjacent protruding part (21) and the recessed part (22) is an arc transition.

7. Indoor unit according to claim 4, characterized in that the side wall of the first cavity (31) comprises a cavity wall (311) arranged opposite to the evaporator (30), the cavity wall (311) is provided with a wind channel (40) on the side close to the first wind gap (11), and the cavity wall (311) comprises:

a first component section (3111), a first end of the first component section (3111) being disposed near one side of the second tuyere (12), the first component section (3111) being disposed in a vertical direction, the plurality of protrusions (21) and the plurality of depressions (22) being disposed on the first component section (3111);

a second component section (3112), a first end of the second component section (3112) is connected with a second end of the first component section (3111), a second end of the second component section (3112) is connected with the air duct (40), and a surface of the second component section (3112) facing the evaporator (30) is arranged at an included angle with a vertical plane.

8. Indoor unit according to claim 7, characterized in that a fan (50) is arranged in the air duct (40), the air duct (40) comprises a diffuser section (41), a first end of the diffuser section (41) is connected with a vortex throat (42) of the air duct (40), the second end of the diffuser section (41) is gradually far away from the fan (50) along the circumferential direction of the fan (50), a second end of the second constituent section (3112) is connected to a second end of the diffuser section (41), a line connecting the first end of the second component section (3112) to the second end of the second component section (3112), a line connecting the first end of the diffuser section (41) to the first end of the second component section (3112), and a line connecting the second end of the second component section (3112) to the first end of the diffuser section (41) form a triangular region (70) located outside the first cavity (31).

9. Indoor unit according to claim 7 or 8, characterized in that the plane of the inner surface of the second component section (3112) is arranged parallel to the plane of the evaporator (30).

10. The indoor unit according to claim 7, further comprising:

a separation plate (60), the separation plate (60) is disposed in the first cavity (31), the separation plate (60) is connected to at least one of the first component section (3111) and the second component section (3112), the separation plate (60) extends along a height direction of the housing (10), and a side of the separation plate (60) away from the first component section (3111) or the second component section (3112) is disposed at a distance from a surface of the evaporator (30).

11. The indoor unit according to claim 10, wherein the partition plate (60) is provided in plurality, and the plurality of partition plates (60) are provided at intervals in a width direction of the casing (10).

12. The indoor unit according to claim 10,

the guide part (20) is integrally formed with the housing (10), and/or

The partition plate (60) and the housing (10) are integrally formed.

13. Indoor unit according to claim 8, characterized in that the clearance between the vortex throat (42) and the fan (50) is smaller than the clearance between the diffuser (41) and the fan (50).

14. Indoor unit according to claim 1, characterized in that it has an upper outlet mode and a lower outlet mode, the first air opening (11) being the outlet and the second air opening (12) being the inlet when the unit is in the upper outlet mode, the first air opening (11) being the inlet and the second air opening (12) being the outlet when the unit is in the lower outlet mode.

15. An air conditioner comprising an indoor unit, characterized in that the indoor unit is the indoor unit according to any one of claims 1 to 14.