Indoor unit and air conditioning system

Abstract

The utility model relates to the technical field of air conditioners, in particular to an indoor unit and an air conditioning system, and aims to solve the problem that an existing indoor unit easily generates abnormal sound due to thermal expansion and cold contraction during startup and shutdown. In order to achieve the purpose, the indoor unit comprises a plurality of air conditioner parts which are connected with one another, and the air conditioner parts are provided with matching surfaces so as to be matched with other air conditioner parts; and in two adjacent matching surfaces, one matching surface is provided with micro bulges, and the other matching surface is a leather grain surface. The micro bulges and the leather grain surface can generate and absorb a part of vibration energy in the vibration process, so that the vibration amplitude is reduced; a certain space gap is formed between every two adjacent micro protrusions, the micro protrusions can transversely expand and contract in the thermal expansion and cold contraction process, the expansion amount and the contraction amount of the air conditioner components are reduced, the displacement amount between the adjacent air conditioner components is reduced, and noise caused by thermal expansion and cold contraction is reduced. The micro protrusions and the leather grain surface can reduce the stress concentration phenomenon of the geometric edge area, reduce the sound of thermal expansion and cold contraction, and improve the user experience.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning technical field, concretely provides an indoor unit and air conditioning system. BACKGROUND

[0002] With the development of science and technology and society, air conditioner has become an indispensable household appliance, when air conditioner is in cooling or heating mode, the sudden temperature reduction or increase of air duct will cause the thermal expansion and cold shrinkage of parts, and then cause the local relative displacement in the matching place, and cause discontinuous abnormal sound. The abnormal sound is big or small, irregular and long duration (about 15-20 minutes), which has a serious impact on the sleep of users and product experience.

[0003] Therefore, an indoor unit and air conditioning system are needed to solve the above technical problems. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the above technical problems, that is, solving the problem that the existing indoor unit is prone to abnormal sound when turning on or off.

[0005] In the first aspect, the utility model provides an indoor unit, which comprises a plurality of air conditioner components connected with each other, the air conditioner components have matching surfaces to match with other air conditioner components; and adjacent two matching surfaces, one of which is provided with a micro convex, and the other is a skin surface.

[0006] In the specific embodiment of the above indoor unit, the micro convex comprises a plurality of convex strips and / or a plurality of convex points arranged on the matching surface in sequence.

[0007] In the specific embodiment of the above indoor unit, the convex points are arranged on the line of the convex strip; and / or

[0008] The convex points are arranged between the adjacent two convex strips.

[0009] In the specific embodiment of the above indoor unit, the sizes of all the convex points are consistent; or

[0010] The heights of at least part of the convex points are inconsistent; and / or, the outer diameters of at least part of the convex points are inconsistent.

[0011] In the specific embodiment of the above indoor unit, the widths and heights of all the convex strips are consistent; or

[0012] The widths of the adjacent two convex strips are inconsistent; and / or, the heights of the adjacent two convex strips are inconsistent.

[0013] In the specific embodiment of the indoor unit, the plurality of protrusions are divided into a plurality of groups, each group comprising a plurality of at least two protrusions; the width of the at least two protrusions in each group is inconsistent; and / or the height of the at least two protrusions in each group is inconsistent; and / or

[0014] The protrusions are equal-length strips; or the protrusions are variable-length strips.

[0015] In the specific embodiment of the indoor unit, the protrusions are arranged in a vertical direction; and / or

[0016] The protrusions are arranged in a horizontal direction; and / or

[0017] The protrusions are arranged in an inclined direction; and / or

[0018] The protrusions are arranged in a spiral shape, an arc shape, or a circular shape.

[0019] In the specific embodiment of the indoor unit, the air conditioning component comprises an air outlet frame, and the surface of the air outlet frame connected with the volute is the matching surface; and / or

[0020] The air conditioning component comprises a volute, and the surface of the volute connected with the air outlet frame, the air inlet grid, and the indoor heat exchange support is the matching surface.

[0021] In the specific embodiment of the indoor unit, the air conditioning component comprises an air inlet grid, and the surface of the air inlet grid connected with the volute is the matching surface; and / or

[0022] The air conditioning component comprises an indoor heat exchange support, and the surface of the indoor heat exchange support connected with the volute is the matching surface.

[0023] In a second aspect, the utility model provides a kind of air conditioning system, which comprises the indoor unit as described above.

[0024] In the case of using the above technical solution, the indoor unit of the utility model comprises a plurality of air conditioning components connected with each other, and the air conditioning components have matching surfaces to cooperate with other air conditioning components; one of the matching surfaces of adjacent two matching surfaces is provided with micro-protrusions, and the other matching surface is a skin surface.

[0025] In the working process of the indoor unit, some air conditioning components will be impacted by airflow and will vibrate, and other air conditioning components will vibrate with them; since the micro protrusions and the skin surface can absorb part of the vibration energy in the vibration process, the vibration amplitude is reduced. In addition, the micro protrusions have a certain space gap between them, and the micro protrusions can expand and contract laterally in the process of thermal expansion and contraction, reducing the expansion and contraction amount to the air conditioning components, reducing the displacement amount between adjacent air conditioning components, reducing the noise caused by thermal expansion and contraction. Moreover, the micro protrusions and the skin surface can reduce the stress concentration phenomenon of the geometric edge area, improve the contact slip between adjacent air conditioning components, reduce high-frequency noise, reduce the occurrence of thermal expansion and contraction noise, and improve the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0026] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0027] Figure 1 is a structure diagram of the micro protrusion provided by the present application Figure 1 ;

[0028] Figure 2 is a structure diagram of the micro protrusion provided by the present application Figure 2 ;

[0029] Figure 3 is a structure diagram of the micro protrusion provided by the present application Figure 3 ;

[0030] Figure 4 is a structure diagram of the micro protrusion provided by the present application Figure 4 ;

[0031] Figure 5 is a structure diagram of the micro protrusion provided by the present application Figure 5 ;

[0032] Figure 6 is a structure diagram of the micro protrusion provided by the present application Figure 6 ;

[0033] Figure 7 is a structure diagram of the micro protrusion provided by the present application Figure 7 ;

[0034] Figure 8 is a structure diagram of the micro protrusion provided by the present application Figure 8 .

[0035] LIST OF REFERENCE NUMERALS: 1, protruding strip; 2, protruding point. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application.

[0037] It should be noted that, in the description of the present application, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the direction or positional relationship terms based on the direction or positional relationship shown in the drawings, which are only for the convenience of description, and are not intended to indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0038] In addition, it should be further noted that, in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] When the air conditioner is turned on or off in the cooling or heating mode, the sudden decrease or increase of the air duct temperature will cause the thermal expansion and contraction of the parts, and then cause the local relative displacement at the matching place, causing discontinuous abnormal noise. The abnormal noise is large and small, irregular and long-lasting (about 15-20 minutes), which has a serious impact on the user's sleep and product experience.

[0040] In order to solve the problem that the existing indoor unit is prone to abnormal noise due to thermal expansion and contraction when turning on or off, the present application discloses an air conditioning system.

[0041] Embodiment one

[0042] The air conditioning system comprises an outdoor unit and an indoor unit, wherein the indoor unit comprises a plurality of air conditioning components connected to each other, and the air conditioning components have matching surfaces to cooperate with other air conditioning components; one of the matching surfaces is provided with a micro-protrusion, and the other matching surface is a skin surface. The skin surface can absorb part of the vibration energy, reduce the vibration amplitude. In addition, the skin surface can also reduce the stress concentration phenomenon in the geometric edge area, improve the contact slip between adjacent air conditioning components, reduce high-frequency noise, reduce the occurrence of thermal expansion and contraction sound, and improve the user experience.

[0043] The indoor unit in the embodiment is a vertical cabinet air conditioner, i.e., a floor type air conditioner. In other embodiments, it can also be a common wall-mounted air conditioner, because the cabinet air conditioner and the wall-mounted air conditioner both include a volute, an air outlet frame, an air inlet grid, an indoor heat exchange bracket, etc., and these components will all produce vibrations and will all have relative displacements when thermal expansion and contraction occur, and thus abnormal noises will occur. The technical solution of the present application is also applicable to the wall-mounted air conditioner.

[0044] The air conditioner components specifically include a volute, an air outlet frame, an air inlet grid, an indoor heat exchange bracket, an indoor fan, and a shell, etc. The volute is provided with an air outlet on the front side, the air outlet frame is arranged at the air outlet and is fixedly connected with the volute. The air inlet grid is arranged at the air inlet on the rear side of the volute and is fixedly connected with the volute. The indoor heat exchanger is arranged on the indoor heat exchange bracket and is located behind the air inlet grid, i.e., the air after heat exchange by the indoor heat exchanger flows into the volute through the air inlet grid. The indoor fan is arranged inside the volute and is specifically an axial flow fan and is arranged in the vertical direction. The shell covers the volute and the indoor heat exchanger, an air outlet of the shell is arranged in front of the shell and faces the air outlet frame. An air inlet of the shell is arranged at the rear of the shell and faces the indoor heat exchanger, and a filter screen is arranged on the air inlet of the shell. The air flows to the indoor heat exchanger after being filtered by the filter screen, and then flows to the volute through the air inlet grid after being cooled or heated by the indoor heat exchanger. After being transported by the axial flow fan, the air after heat exchange is sent to the indoor through the air outlet frame and the air outlet of the shell.

[0045] The front end surface of the volute is fixedly connected with the air outlet frame, and specifically, connecting ears can be arranged on the air outlet frame and the volute, and the volute and the air outlet frame are fixedly connected by bolts penetrating through the connecting ears. The connecting surface of the air outlet frame and the volute is a matching surface, and the front end surface of the volute is a matching surface. One of the front end surface of the volute and the connecting surface of the air outlet frame and the volute is provided with a micro-protrusion, and the other is a skin surface.

[0046] During the working process of the indoor unit, the air after heat exchange by the heat exchanger is blown to the air outlet frame from the air outlet of the volute by the transportation of the indoor fan, and then flows outwards through the air outlet frame. The volute and the air outlet frame will all be impacted by the airflow and will produce vibrations. Since the micro-protrusions and the skin surface will absorb part of the vibration energy during the vibration process, the vibration amplitude is reduced. In addition, the micro-protrusions have a certain space gap therebetween, and the micro-protrusions can expand and contract transversely during thermal expansion and contraction, reducing the expansion and contraction amounts in the direction of the volute and the air outlet frame, reducing the displacement amount between the volute and the air outlet frame, and reducing the noise caused by thermal expansion and contraction. Moreover, the micro-protrusions and the skin surface can reduce the stress concentration phenomenon in the geometric edge region, improve the contact slip between the volute and the air outlet frame, reduce high-frequency noise, reduce the occurrence of thermal expansion and contraction noise, and improve the user experience.

[0047] The horizontal louvers are arranged along the horizontal direction and are spaced apart along the vertical direction. The horizontal louvers are connected to the connecting rod, and the up-and-down movement of the connecting rod can drive the horizontal louvers to swing up and down, so as to adjust the up-and-down air outlet direction of the indoor unit. The vertical louvers are arranged along the vertical direction and are spaced apart along the horizontal direction. The connecting rod is connected to the vertical louvers, and the horizontal movement of the connecting rod can drive the vertical louvers to swing left and right, so as to adjust the left-and-right air outlet direction of the indoor unit. The connecting rod and the connecting rod are driven by corresponding motors, and the movement of the connecting rod and the connecting rod can drive the corresponding louvers to swing, so as to adjust the air outlet direction.

[0048] The volute and the air outlet frame are arranged in the shell, and the shell air outlet is arranged on the shell. The air outlet frame is located on the inner side of the shell air outlet, and the air baffle is arranged at the shell air outlet. It mainly plays the role of shielding the shell air outlet. Specifically, a sliding rail is arranged in the shell, and the air baffle is slidably arranged on the sliding rail. A rack is arranged on the air baffle, and a driving motor and a gear are arranged in the shell. The gear is engaged with the rack, the driving motor drives the gear to rotate, and then the rack moves, so that the air baffle moves. The air baffle can no longer block the shell air outlet, and the indoor unit can blow air outward. The air baffle can also be shielded and moved to the shell air outlet, so that the air baffle can block the shell air outlet, so that dust and the like cannot enter the indoor unit.

[0049] The air inlet grid is connected to the rear end of the volute, and the rear end face of the volute and the air inlet grid are fixedly connected. Specifically, connecting ears can be arranged on the air inlet grid and the volute, and the air inlet grid and the volute are fixedly connected by bolts penetrating the connecting ears. The connecting surface of the air inlet grid and the volute is a matching surface, the rear end face of the volute is a matching surface, and one of the rear end face of the volute and the connecting surface of the air inlet grid and the volute is provided with a micro-protrusion, and the other surface is a skin surface.

[0050] During the working process of the indoor unit, the volute and the air inlet frame will be impacted by airflow and will vibrate. Since the micro-protrusions and the skin surface can absorb part of the vibration energy during the vibration process, the vibration amplitude is reduced. In addition, the micro-protrusions have a certain space gap, and the micro-protrusions can expand and contract transversely during thermal expansion and contraction, reducing the expansion and contraction amount in the direction of the volute and the air outlet frame, reducing the displacement between the volute and the air inlet frame, and reducing the noise caused by thermal expansion and contraction. Moreover, the micro-protrusions and the skin surface can reduce the stress concentration phenomenon in the geometric edge area, improve the contact slip between the volute and the air inlet frame, reduce high-frequency noise, reduce the occurrence of thermal expansion and contraction noise, and improve the user experience.

[0051] The indoor heat exchange support is connected with the bottom of the volute, and specifically connected with the bottom of the volute through screwing. The connecting surface of the indoor heat exchange support and the volute is the mounting surface, and the connecting surface of the volute and the indoor heat exchange support is the mating surface. One of the connecting surfaces of the indoor heat exchange support and the volute and the connecting surface of the volute and the indoor heat exchange support is provided with micro protrusions, and the other surface is provided with a skin surface. During the working process of the indoor unit, the volute will be impacted by airflow and vibrate, and the indoor heat exchange support will also be driven to vibrate. Since the micro protrusions and the skin surface can absorb part of the vibration energy during the vibration process, the vibration amplitude is reduced. In addition, the micro protrusions have a certain space gap, and can expand and contract transversely during thermal expansion and contraction, reducing the expansion and contraction amount in the direction of the volute and the indoor heat exchange support, reducing the displacement between the volute and the indoor heat exchange support, reducing the noise caused by thermal expansion and contraction, and improving the user experience.

[0052] The bottom end of the indoor fan is connected to the indoor heat exchange support, and the two are fixedly connected. Specifically, a connecting lug is arranged on the indoor fan, and the connecting lug is fixed on the indoor heat exchange support by a bolt to realize the fixation of the indoor fan and the indoor heat exchange support. The connecting surface of the indoor fan and the indoor heat exchange support is the mating surface, that is, one of the connecting surfaces of the indoor fan and the indoor heat exchange support is provided with micro protrusions, and the other surface is provided with a skin surface. During the working process of the indoor unit, the indoor fan will vibrate, and the indoor heat exchange support will also be driven to vibrate. Since the micro protrusions and the skin surface can absorb part of the vibration energy during the vibration process, the vibration amplitude is reduced. In addition, the micro protrusions have a certain space gap, and can expand and contract transversely during thermal expansion and contraction, reducing the expansion and contraction amount in the direction of the indoor fan and the indoor heat exchange support, reducing the displacement between the indoor fan and the indoor heat exchange support, reducing the noise caused by thermal expansion and contraction, and improving the user experience.

[0053] The bottom of the indoor heat exchanger is connected to the indoor heat exchange support, and the two are fixedly connected. Specifically, the connection can be achieved by bolts. During the operation of the indoor unit, the indoor heat exchanger will be impacted by airflow and will vibrate, and the indoor heat exchange support will also be driven to vibrate. Since the micro protrusions can absorb part of the vibration energy during vibration, the vibration amplitude is reduced. In addition, the micro protrusions have a certain space gap between them, and the micro protrusions can expand and contract laterally during thermal expansion and contraction, reducing the expansion and contraction amount in the direction of the indoor heat exchanger and the indoor heat exchange support, reducing the displacement amount between the indoor heat exchanger and the indoor heat exchange support, reducing the noise caused by thermal expansion and contraction. Moreover, the micro protrusions can reduce the stress concentration phenomenon in the geometric edge area, improve the contact slip between the indoor heat exchanger and the indoor heat exchange support, reduce high-frequency noise, reduce the occurrence of thermal expansion and contraction noise, and improve user experience.

[0054] The indoor heat exchanger is located behind the air inlet grid, that is, the air first passes through the indoor heat exchanger for heat exchange and then flows to the volute, and is blown into the room by the indoor fan through the air outlet frame and the air outlet of the shell. An air inlet grid is arranged on the back of the shell, and the indoor air enters the indoor heat exchanger through the air inlet grid and then is heat-exchanged by the indoor heat exchanger.

[0055] As shown in Figure 1 , the micro protrusion includes a plurality of protrusions 1 arranged in sequence on the matching surface. The protrusion 1 can be linear. Regarding the shape of the protrusion 1, although it is linear in this embodiment, this is not a limitation of the present utility model, and in other embodiments, the protrusion 1 can be wavy, zigzag, arc-shaped, circular or polygonal, etc., without deviating from the basic principles of the present utility model, which will fall within the protection scope of the present utility model.

[0056] The cross-sectional shape of the protrusion 1 is arc-shaped. Regarding the cross-sectional shape of the protrusion 1, although it is arc-shaped in this embodiment, this is not a limitation of the present utility model, and in other embodiments, it can also be triangular, quadrangular or other polygonal, etc., without deviating from the basic principles of the present utility model, which will fall within the protection scope of the present utility model.

[0057] In this embodiment, as shown in Figure 1 , the width and height of all the protrusions 1 are consistent. Regarding the size of the protrusion 1, although the width and height are consistent in this embodiment, this is not a limitation of the present utility model, and in other embodiments, those skilled in the art can also set the protrusion 1 to be: as shown in Figure 2As shown in the figure, the width of the two adjacent convex strips 1 is inconsistent; or, the height of the two adjacent convex strips 1 is inconsistent. The plurality of convex strips 1 is divided into a plurality of groups, each group comprising a plurality of at least two convex strips 1; the width of the at least two convex strips 1 in each group is inconsistent; or, the height of the at least two convex strips 1 in each group is inconsistent.

[0058] As shown in the figure, the convex strip 1 is a constant diameter strip, that is, the cross-sectional size of the convex strip 1 at each position is the same. Regarding the cross-sectional size of the convex strip 1, although it is a constant diameter strip in this embodiment, this is not a limitation of the present utility model, and in other embodiments, as shown in the figure, the convex strip 1 is a variable diameter strip; that is, the cross-sectional size of the convex strip 1 at multiple positions is different. This can all achieve the effect of reducing vibration and reducing the amount of thermal expansion and contraction, and thus falls within the protection scope of the present utility model. Figure 1 2 As shown in the figure, the convex strip 1 is a constant diameter strip, that is, the cross-sectional size of the convex strip 1 at each position is the same. Regarding the cross-sectional size of the convex strip 1, although it is a constant diameter strip in this embodiment, this is not a limitation of the present utility model, and in other embodiments, as shown in the figure, the convex strip 1 is a variable diameter strip; that is, the cross-sectional size of the convex strip 1 at multiple positions is different. This can all achieve the effect of reducing vibration and reducing the amount of thermal expansion and contraction, and thus falls within the protection scope of the present utility model. Figure 3

[0059] In this embodiment, the convex strip 1 is arranged along the vertical direction; regarding the arrangement direction of the convex strip 1, although it is arranged along the vertical direction in this embodiment, this is not a limitation of the present utility model, and in other embodiments, the person skilled in the art can also choose: the convex strip 1 is arranged along the horizontal direction, or the convex strip 1 is arranged along the inclined direction; or a plurality of arrangement modes.

[0060] The convex strip 1 on the matching surface can adopt one or more arrangement modes, and the arrangement modes of the convex strip 1 on different matching surfaces can also be different. The arrangement mode refers to the shape, size, direction of the convex strip 1, and whether the diameter is variable, etc.

[0061] In the working process of the indoor unit, part of the air conditioner components will be impacted by airflow and will vibrate, and other parts of the air conditioner components will vibrate; because the convex strip 1 and the skin surface will absorb part of the vibration energy during the vibration process, the vibration amplitude is reduced. In addition, the convex strip 1 has a certain space gap, and the convex strip 1 can expand and contract laterally during thermal expansion and contraction, reducing the expansion and contraction amount to the air conditioner components, reducing the displacement amount between adjacent air conditioner components, reducing the noise caused by thermal expansion and contraction. Moreover, the convex strip 1 and the skin surface can reduce the stress concentration phenomenon of the geometric edge region, improve the contact slip between adjacent air conditioner components, reduce high-frequency noise, reduce the occurrence of thermal expansion and contraction noise, and improve the user experience.

[0062] Embodiment two

[0063] This embodiment discloses an air conditioning system, which has basically the same structure as the air conditioning system in embodiment one, except for the specific structure of the matching surface.

[0064] As shown in the figure,​​Figure 4 As shown, the micro-protrusions on the mating surface specifically include multiple protrusions 2, which are specifically spherical protrusions 2, or pyramidal, ellipsoidal or other shaped protrusions 2.

[0065] The protrusions 2 can be regularly arranged on the mating surface, that is, they can be arranged in rows or in an arc shape on the mating surface.

[0066] All the protrusions are exactly the same shape and size, which makes the mating surfaces look more aesthetically pleasing.

[0067] Regarding the dimensions of the protrusions 2, it should be noted that although all protrusions 2 are identical in this embodiment, this is not a limitation of the present invention. Without departing from the principle of the present invention, in other embodiments, at least some protrusions 2 may have inconsistent heights, or at least some protrusions 2 may have inconsistent outer diameters; or at least some protrusions 2 may have inconsistent heights and some protrusions 2 may have inconsistent outer diameters. These variations do not deviate from the basic principle of the present invention and will fall within the protection scope of the present invention.

[0068] During operation, some air conditioning components vibrate due to airflow impact, causing other components to vibrate as well. The raised points 2 and the textured surface absorb some of the vibration energy, reducing the vibration amplitude. Furthermore, the spatial gap between the raised points 2 allows them to expand and contract laterally during thermal expansion and contraction, reducing the amount of expansion and contraction in the air conditioning components and minimizing displacement between adjacent components, thus reducing noise caused by thermal expansion and contraction. Moreover, the raised points 2 and the textured surface reduce stress concentration at geometric edges, improve contact slippage between adjacent air conditioning components, reduce high-frequency noise, minimize thermal expansion and contraction noise, and improve user experience.

[0069] Example 3

[0070] This embodiment discloses an air conditioning system, whose structure is basically the same as that of the air conditioning system in Embodiment 1, except for the specific structure of the mating surfaces.

[0071] Among them, such as Figures 5-8 As shown, the micro-protrusions on the mating surface specifically include multiple protrusions 2 and multiple protrusions 1, wherein the form of the protrusions 1 is the same as that of the protrusions 1 in Embodiment 1. The form of the protrusions 2 is the same as that in Embodiment 2.

[0072] like Figure 5 , 7 As shown in Figure 8, the protrusion 2 is set on the line where the protrusion 1 is located, that is, the protrusion 2 can cut the protrusion 1. The protrusion 1 can be arranged at intervals along its length.

[0073] It needs to be explained that the convex point 2 is arranged on the convex strip 1 in the embodiment, but this is not a limitation of the utility model, and in other embodiments, the convex point 2 is arranged between two adjacent convex strips 1 as shown in the drawing, that is, a plurality of convex points 2 arranged in rows are arranged between part of two adjacent convex strips 1. Figure 6 It needs to be explained that the convex point 2 is arranged on the convex strip 1 in the embodiment, but this is not a limitation of the utility model, and in other embodiments, the convex point 2 is arranged between two adjacent convex strips 1 as shown in the drawing, that is, a plurality of convex points 2 arranged in rows are arranged between part of two adjacent convex strips 1.

[0074] In the working process of the indoor unit, part of the air conditioner components will be impacted by airflow and will vibrate, and other parts of the air conditioner components will vibrate; since the micro convex and the skin surface will absorb part of the vibration energy in the vibration process, the vibration amplitude is reduced. In addition, the micro convex has a certain space gap, and the micro convex can expand and contract laterally in the thermal expansion and contraction process, reducing the expansion and contraction amount to the air conditioner components, reducing the displacement amount between adjacent air conditioner components, reducing the noise caused by thermal expansion and contraction. Moreover, the micro convex and the skin surface can reduce the stress concentration phenomenon of the geometric edge area, improve the contact slip between adjacent air conditioner components, reduce high-frequency noise, reduce the occurrence of thermal expansion and contraction noise, and improve user experience.

[0075] Thus, the technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to related technical features without deviating from the principles of the utility model, and the technical scheme after the changes or replacements will fall within the protection scope of the utility model.

Claims

1. An indoor unit, characterized by, The air conditioner part comprises a plurality of mutually connected air conditioner parts, the air conditioner parts have mating surfaces to mate with other air conditioner parts; two adjacent mating surfaces, one of the mating surfaces is provided with micro-protrusions, and the other mating surface is a skin surface.

2. The indoor unit of claim 1, characterized in that, The micro-protrusions comprise a plurality of protruding lines and / or a plurality of protruding points arranged on the mating surface in sequence.

3. The indoor unit of claim 2, characterized in that, The protruding points are arranged on the lines where the protruding lines are arranged; and / or The protruding points are arranged between two adjacent protruding lines.

4. The indoor unit of claim 2, characterized in that, The sizes of all the protruding points are consistent; or The heights of at least some of the protruding points are inconsistent; and / or, the outer diameters of at least some of the protruding points are inconsistent.

5. The indoor unit of claim 2, wherein, The widths and heights of all the protruding lines are consistent; or The widths of two adjacent protruding lines are inconsistent; and / or, the heights of two adjacent protruding lines are inconsistent.

6. The indoor unit of claim 2, wherein, The plurality of protruding lines are divided into a plurality of groups, each group comprises a plurality of at least two protruding lines; the widths of at least two protruding lines in each group are inconsistent; and / or, the heights of at least two protruding lines in each group are inconsistent; and / or The protruding lines are constant-length lines; or, the protruding lines are variable-length lines.

7. The indoor unit of claim 2, wherein, The protruding lines are arranged in a vertical direction; and / or The protruding lines are arranged in a horizontal direction; and / or The protruding lines are arranged in an inclined direction; and / or The protruding lines are arranged in a spiral shape, an arc shape or a circular shape.

8. The indoor unit of claim 1, wherein, The air conditioner part comprises an air outlet frame, the surface of the air outlet frame connected with the volute is the mating surface; and / or The air conditioner part comprises a volute, the surface of the volute connected with the air outlet frame, the air inlet grid and the indoor heat exchange support is the mating surface.

9. The indoor unit of claim 8, characterized in that, The air conditioner part comprises an air inlet grid, the surface of the air inlet grid connected with the volute is the mating surface; and / or The air conditioner part comprises an indoor heat exchange support, the surface of the indoor heat exchange support connected with the volute is the mating surface.

10. An air conditioning system characterized by, An indoor unit comprising the air conditioner part as claimed in any one of claims 1-9.

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