Indoor unit for air conditioner and air conditioner

Abstract

The utility model relates to the technical field of household appliances, and discloses an indoor unit for an air conditioner, comprising: a housing comprising a main body and a sealing part arranged at one end of the main body in the length direction; the evaporator is arranged on the main body and encloses an air duct together with the main body; wherein the sealing part extends from the main body to the evaporator, an opening is formed in one end of the air duct, and the sealing part is arranged at the opening and shields the opening. The evaporator and the main body jointly define the air duct, the opening is formed in one end of the air duct, the opening of the air duct is sealed through the sealing part which is arranged on the main body and extends from the main body to the evaporator, parts such as a connecting plate and a sealing gasket in the related technology are omitted, the number of the parts is reduced, the assembly process is simplified, and the assembly efficiency is improved. The assembly difficulty is reduced, the cost is saved, and the production efficiency of the indoor unit is improved. The utility model further discloses the air conditioner.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to an indoor unit for an air conditioner and an air conditioner. Background Art

[0002] At present, the evaporator of the mainstream air conditioner on the market has an integrated plastic tube sheet structure at one end and a sheet metal tube sheet structure at the other end. The sheet metal tube sheet structure consists of two tube sheets and a connecting plate. The connecting plate is set at the opening of the air duct and is used to seal the air duct. At least four screws are required to fix the two tube sheets and the connecting plate during assembly. In addition, in order to ensure the airtightness of the air duct, a gasket needs to be pasted between the connecting plate and the frame of the indoor unit for sealing.

[0003] The related technology discloses an indoor unit of an air conditioner, including a casing, an evaporator, an air duct, a crossflow fan and a water receiving tray, wherein the evaporator and the air duct are relatively arranged inside the casing, the crossflow fan is arranged between the evaporator and the air duct, and the water receiving tray is located below the air duct. Both sides of the evaporator are fixedly connected to the air duct, wherein a right tube sheet is arranged on the right side of the evaporator, and the right tube sheet and the air duct are connected through a right connecting plate. Specifically, along the axial direction of the indoor unit of the air conditioner, two first mounting seats are arranged on the air duct, and two first fixing holes corresponding to the first mounting seats are arranged on the first side of the right connecting plate, and the air duct and the right connecting plate are connected and fixed by fasteners such as screws; along the axial direction of the indoor unit of the air conditioner, three second mounting seats are arranged on the right tube sheet, and three second fixing holes corresponding to the second mounting seats are arranged on the second side of the right connecting plate, and the air duct and the right connecting plate are connected and fixed by fasteners such as screws. In addition, a sealing gasket is also arranged between the right connecting plate and the air duct to prevent air leakage.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] The right side of the evaporator is sealed to the air duct by a right connecting plate, and the right connecting plate and the right tube plate are fixed by multiple screws. A sealing gasket is also required between the right connecting plate and the air duct for sealing. There are many parts, the installation is difficult, the cost is high, and the assembly efficiency of the air conditioner indoor unit is low.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The disclosed embodiments provide an indoor unit for air conditioning and an air conditioner, which reduce the number of parts, lower the difficulty of assembly, save costs, and improve the production efficiency of the indoor unit and the air conditioner while ensuring the sealing of the air duct.

[0009] According to a first aspect of an embodiment of the utility model, there is provided an indoor unit for an air conditioner, comprising: a shell, comprising a main body and a sealing portion, the sealing portion being arranged at one end of the main body in a length direction; an evaporator, arranged in the main body, and together with the main body enclosing an air duct; wherein the sealing portion is extended from the main body toward the evaporator, an opening is arranged at one end of the air duct, and the sealing portion is arranged at the opening and covers the opening.

[0010] Optionally, the main body includes a mounting portion having a circular hole therethrough, the indoor unit also includes a fan, and a rotating shaft of the fan is disposed in the circular hole; the sealing portion includes: a fan ring structure, which is disposed around the outer circumference of the circular hole and blocks the opening of the air duct.

[0011] Optionally, the evaporator includes a tube sheet structure arranged at the opening, and the fan ring structure includes: a fan ring body, arranged at the opening; an extension portion, arranged on the inner side of the fan ring body and extending in the direction of the tube sheet structure; wherein the extension portion is arranged on the inner side of the tube sheet structure and abuts against the tube sheet structure.

[0012] Optionally, the tube sheet structure includes: a tube sheet body; a folded portion, which is arranged on the outside of the tube sheet body and extends in the direction of the fan ring body; wherein the folded portion is arranged on the outside of the extension portion and abuts against the extension portion.

[0013] Optionally, the extension portion includes a first abutment section and a first connecting section located between the first abutment section and the fan ring body, and the folded portion includes: a second abutment section, arranged on the outside of the first abutment section; a second connecting section, arranged between the second abutment section and the tube plate body; wherein the first abutment section extends from the first connecting section toward the second connecting section, and the second abutment section extends from the second connecting section toward the first connecting section.

[0014] Optionally, the sealing portion further comprises: a limiting rib, which is arranged on the surface of the first connecting section facing the second abutting section and is provided with a limiting groove; wherein the second abutting section is inserted into the limiting groove to limit the outward movement of the tube sheet structure relative to the sealing portion.

[0015] Optionally, the limiting groove includes: a guiding inclined surface, which is arranged at the groove opening of the limiting groove, and the guiding inclined surface is inclined toward the middle of the limiting groove along the direction from the groove opening of the limiting groove to the groove bottom of the limiting groove.

[0016] Optionally, the tube sheet structure further includes: a first tube sheet including a connecting portion; a second tube sheet connected to the first tube sheet and including a matching portion; wherein the connecting portion and the matching portion are connected to connect the first tube sheet and the second tube sheet.

[0017] Optionally, the sealing portion and the main body are integrally formed.

[0018] According to a second aspect of an embodiment of the utility model, an air conditioner is provided, comprising: an outdoor unit; and an indoor unit connected to the outdoor unit.

[0019] The indoor unit for air conditioning and the air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] The evaporator and the main body jointly define an air duct, and an opening is provided at one end of the air duct. The opening of the air duct is sealed by a sealing portion which is provided on the main body and extends from the main body toward the evaporator, thereby eliminating parts such as connecting plates and sealing gaskets in related technologies, reducing the number of parts, simplifying the assembly process, reducing the difficulty of assembly, saving costs, and improving the production efficiency of the indoor unit.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0023] Figure 1 is a structural schematic diagram of an indoor unit for an air conditioner provided by an embodiment of the present disclosure;

[0024] Figure 2 is a structural schematic diagram of a housing provided by an embodiment of the present disclosure;

[0025] Figure 3 is a schematic structural diagram of an evaporator provided in an embodiment of the present disclosure;

[0026] Figure 4 is a partial structural schematic diagram of an indoor unit for an air conditioner provided in an embodiment of the present disclosure;

[0027] Figure 5 is a structural schematic diagram of an indoor unit for an air conditioner from another perspective provided by an embodiment of the present disclosure;

[0028] Figure 6 yes Figure 5 Schematic diagram of the cross section along the AA direction;

[0029] Figure 7 yes Figure 6 A partial enlarged schematic diagram of part A in the middle.

[0030] Reference numerals:

[0031] 10: Indoor unit;

[0032] 20: housing; 21: main body; 211: mounting portion; 2111: circular hole; 22: sealing portion; 221: fan ring structure; 2211: fan ring body; 2212: extension portion; 2213: first abutting section; 2214: first connecting section; 2215: first side plate; 2216: second side plate; 2217: third side plate; 222: limiting rib; 2221: limiting groove; 2222: guiding inclined surface; 223: reinforcing rib;

[0033] 30: evaporator; 31: tube sheet structure; 311: tube sheet body; 312: folding portion; 3121: second abutting section; 3122: second connecting section; 3123: fourth side plate; 3124: fifth side plate; 3125: sixth side plate; 313: first tube sheet; 3131: connecting portion; 314: second tube sheet; 3141: matching portion;

[0034] 40: air duct; 41: opening. DETAILED DESCRIPTION

[0035] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0036] The terms "first", "second", etc. in the specification and claims of the disclosed embodiments and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate for the disclosed embodiments described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0037] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0038] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0039] Unless otherwise stated, the term "plurality" means two or more.

[0040] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0041] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0042] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0043] Combination Figures 1 to 7 As shown, the embodiment of the present disclosure provides an indoor unit 10 for an air conditioner, comprising a housing 20 and an evaporator 30. The housing 20 comprises a main body 21 and a sealing portion 22, wherein the sealing portion 22 is disposed at one end of the main body 21 in the length direction. The evaporator 30 is disposed at the main body 21, and the evaporator 30 and the main body 21 together enclose an air duct 40. The sealing portion 22 is extended from the main body 21 toward the evaporator 30, an opening 41 is disposed at one end of the air duct 40, and the sealing portion 22 is disposed at the opening 41 and blocks the opening 41.

[0044] In the indoor unit 10 for air conditioning provided by the embodiment of the present disclosure, the evaporator 30 and the main body 21 jointly define an air duct 40, and an opening 41 is provided at one end of the air duct 40. The opening 41 of the air duct 40 is sealed by a sealing portion 22 provided on the main body 21 and extending from the main body 21 toward the evaporator 30, thereby eliminating parts such as connecting plates and sealing gaskets in related technologies, reducing the number of parts, simplifying the assembly process, reducing the difficulty of assembly, saving costs, and improving the production efficiency of the indoor unit 10.

[0045] It is understandable that the evaporator 30 of the mainstream air conditioner on the market has an integrated plastic tube sheet structure 31 at one end in the length direction, and a sheet metal tube sheet structure 31 at the other end. After one end of the plastic tube sheet structure 31 is connected to the main body 21, a closed structure is formed, and no sealing is required, while after one end of the sheet metal tube sheet structure 31 is connected to the main body 21, an opening 41 of the air duct 40 is formed, so the opening 41 needs to be sealed.

[0046] Optionally, the main body 21 includes a mounting portion 211, and the mounting portion 211 is provided with a through circular hole 2111. The indoor unit 10 also includes a fan, and the rotating shaft of the fan is provided in the circular hole 2111. The sealing portion 22 includes a fan ring structure 221, which is arranged around the outer circumference of the circular hole 2111, and the fan ring structure 221 blocks the opening 41 of the air duct 40.

[0047] The fan is arranged in the air duct 40, and the rotating shaft of the fan is fixed to the mounting portion 211. The fan ring structure 221 is arranged around the outer circumference of the circular hole 2111, and the fan ring structure 221 blocks the opening 41 of the air duct 40, so that the fan ring structure 221 seals the opening 41 to ensure the airtightness of the air duct 40, and eliminates parts such as connecting plates and sealing gaskets, reduces the number of parts, simplifies the assembly process, reduces the difficulty of assembly, saves costs, and improves the production efficiency of the indoor unit 10.

[0048] Optionally, the evaporator 30 includes a tube sheet structure 31 disposed at the opening 41. The fan ring structure 221 includes a fan ring body 2211 and an extension 2212. The fan ring body 2211 is disposed at the opening 41. The extension 2212 is disposed on the inner side of the fan ring body 2211, and the extension 2212 extends toward the tube sheet structure 31. The extension 2212 is disposed on the inner side of the tube sheet structure 31, and the extension 2212 abuts against the tube sheet structure 31.

[0049] In this way, the fan ring body 2211 seals the opening 41 to ensure the airtightness of the air duct 40. The extension portion 2212 is arranged on the inner side of the tube sheet structure 31, and the extension portion 2212 and the tube sheet structure 31 are abutted against each other to limit the inward movement of the tube sheet structure 31 relative to the sealing portion 22, thereby limiting the inward movement of the evaporator 30 relative to the shell 20.

[0050] It can be understood that moving from one end of the air duct 40 in the length direction to the external space is the outward moving direction, and moving from one end of the air duct 40 in the length direction to the middle of the air duct 40 is the inward moving direction.

[0051] Optionally, the tube sheet structure 31 includes a tube sheet body 311 and a folded portion 312, wherein the folded portion 312 is disposed outside the tube sheet body 311 and extends toward the fan ring body 2211. The folded portion 312 is disposed outside the extension portion 2212, and the folded portion 312 abuts against the extension portion 2212.

[0052] In this way, the extension portion 2212 extends toward the tube sheet structure 31, and the folded portion 312 extends toward the fan ring body 2211, thereby improving the sealing performance at the opening 41, thereby improving the sealing performance of the air duct 40. The folded portion 312 abuts against the extension portion 2212, restricting the tube sheet structure 31 from moving inward relative to the sealing portion 22, thereby restricting the evaporator 30 from moving inward relative to the shell 20.

[0053] Optionally, the extension portion 2212 includes a first abutting section 2213 and a first connecting section 2214 located between the first abutting section 2213 and the fan ring body 2211. The folding portion 312 includes a second abutting section 3121 and a second connecting section 3122. The second abutting section 3121 is arranged on the outside of the first abutting section 2213. The second connecting section 3122 is arranged between the second abutting section 3121 and the tube plate body 311. The first abutting section 2213 extends from the first connecting section 2214 toward the second connecting section 3122, and the second abutting section 3121 extends from the second connecting section 3122 toward the first connecting section 2214.

[0054] In this way, the second abutment section 3121 is arranged on the outside of the first abutment section 2213, limiting the first abutment section 2213 from continuing to move outward beyond the second abutment section 3121, thereby limiting the outward movement of the sealing portion 22 relative to the tube sheet structure 31, thereby limiting the outward movement of the shell 20 relative to the evaporator 30.

[0055] Combination Figure 7As shown, the first connecting section 2214 is arranged below the second connecting section 3122, the first abutting section 2213 extends from the first connecting section 2214 toward the second connecting section 3122, and the top end of the first abutting section 2213 abuts against the second connecting section 3122 to limit the upward movement of the first abutting section 2213 relative to the second connecting section 3122, thereby limiting the upward movement of the sealing portion 22 relative to the tube sheet structure 31, thereby limiting the upward movement of the shell 20 relative to the evaporator 30. The second abutting section 3121 extends from the second connecting section 3122 toward the first connecting section 2214, and the first connecting section 2214 is located below the second abutting section 3121 to limit the downward movement of the second abutting section 3121 relative to the first connecting section 2214, thereby limiting the downward movement of the tube sheet structure 31 relative to the sealing portion 22, thereby limiting the downward movement of the evaporator 30 relative to the shell 20.

[0056] Optionally, the sealing portion 22 further includes a limiting rib 222, which is disposed on the surface of the first connecting section 2214 facing the second abutting section 3121, and the limiting rib 222 is provided with a limiting groove 2221. The second abutting section 3121 is inserted into the limiting groove 2221 to limit the tube sheet structure 31 from moving outward relative to the sealing portion 22.

[0057] Combination Figure 7 As shown, the second abutting section 3121 is arranged above the bottom of the limiting groove 2221, so that the second abutting section 3121 is limited to move downward by the bottom of the limiting groove 2221, thereby limiting the downward movement of the tube sheet structure 31 relative to the sealing portion 22, thereby limiting the downward movement of the evaporator 30 relative to the shell 20. The second abutting section 3121 is arranged on the inner side of the side wall of the limiting groove 2221, and the second abutting section 3121 is located on the outer side of the first abutting section 2213, so that the second abutting section 3121 is located between the first abutting section 2213 and the side wall of the limiting groove 2221, limiting the inward and outward movement of the second abutting section 3121 relative to the sealing portion 22, thereby limiting the inward and outward movement of the tube sheet structure 31 relative to the sealing portion 22, thereby limiting the inward and outward movement of the evaporator 30 relative to the shell 20.

[0058] Optionally, the limiting groove 2221 includes a guiding inclined surface 2222, and the guiding inclined surface 2222 is arranged at the notch of the limiting groove 2221. Along the direction from the notch of the limiting groove 2221 to the groove bottom of the limiting groove 2221, the guiding inclined surface 2222 is inclined toward the middle of the limiting groove 2221.

[0059] In this way, during the process of the second abutting section 3121 being inserted into the limiting groove 2221 , the second abutting section 3121 moves along the guiding inclined surface 2222 to guide the second abutting section 3121 to be smoothly inserted into the limiting groove 2221 .

[0060] Optionally, combined Figures 1 to 3As shown, the opening 41 of the air duct 40 is approximately trapezoidal, and the extension portion 2212 includes a first side plate 2215, a second side plate 2216, and a third side plate 2217. The first side plate 2215 and the second side plate 2216 are both inclinedly arranged, and the first side plate 2215 and the second side plate 2216 extend along two oblique waists of the trapezoid respectively, and the third side plate 2217 connects the first side plate 2215 and the second side plate 2216. The folding portion 312 includes a fourth side plate 3123, a fifth side plate 3124, and a sixth side plate 3125. The fourth side plate 3123 and the fifth side plate 3124 are both inclinedly arranged, and the fourth side plate 3123 and the fifth side plate 3124 extend along two oblique waists of the trapezoid respectively, and the sixth side plate 3125 connects the fourth side plate 3123 and the fifth side plate 3124.

[0061] In this way, according to the shape of the opening 41 of the air duct 40, the corresponding extension part 2212 and the folding part 312 are arranged to improve the airtightness of the air duct 40. It can be understood that the opening 41 of the air duct 40 can be a regular shape such as a triangle or a circle, or an irregular shape. Correspondingly, the extension part 2212 and / or the folding part 312 are arranged accordingly according to the shape of the opening 41 of the air duct 40, and can be a regular shape or an irregular shape.

[0062] Optionally, combined Figures 1 to 7 As shown, the limiting rib 222 is disposed on the third side plate 2217 .

[0063] The third side plate 2217 is disposed above the first side plate 2215 and the second side plate 2216 , and the limiting rib 222 is disposed on the third side plate 2217 , which can limit the downward movement of the tube plate structure 31 relative to the sealing portion 22 , thereby limiting the downward movement of the evaporator 30 relative to the shell 20 .

[0064] It is understandable that each side plate of the extension portion 2212 can be provided with the limiting rib 222 at the same time, or one or more of them can be selected to be provided with the limiting rib 222.

[0065] Optionally, the sealing portion 22 further includes a reinforcing rib 223 , and the reinforcing rib 223 is arranged on the outer side of the fan ring body 2211 .

[0066] In this way, by setting the reinforcing ribs 223 on the outside of the fan ring body 2211, the structural strength of the fan ring body 2211 is strengthened without increasing the thickness of the fan ring body 2211. Moreover, the reinforcing ribs 223 are set on the outside of the fan ring body 2211 to avoid occupying the space of the air duct 40.

[0067] Optionally, at least part of the reinforcing ribs 223 are connected to the limiting ribs 222 .

[0068] The reinforcing rib 223 is connected to the limiting rib 222, so that the reinforcing rib 223 and the limiting rib 222 can use one mold at the same time, and there is no need to separately set up a mold for the reinforcing rib 223 and a mold for the limiting rib 222, thereby improving the production speed.

[0069] Optionally, the tube sheet structure 31 further includes a first tube sheet 313 and a second tube sheet 314. The first tube sheet 313 includes a connecting portion 3131, the second tube sheet 314 is connected to the first tube sheet 313, and the second tube sheet 314 includes a matching portion 3141. The connecting portion 3131 and the matching portion 3141 are connected to connect the first tube sheet 313 and the second tube sheet 314.

[0070] In this way, the first tube sheet 313 and the second tube sheet 314 are connected by connecting the connecting portion 3131 and the matching portion 3141.

[0071] Optionally, the connecting portion 3131 is disposed between the tube sheet body 311 and the folded portion 312 of the first tube sheet 313 , and the matching portion 3141 is disposed between the tube sheet body 311 and the folded portion 312 of the second tube sheet 314 .

[0072] Optionally, both the connecting portion 3131 and the matching portion 3141 are provided with threaded holes, and the connecting portion 3131 and the matching portion 3141 are connected by screws.

[0073] In this way, the connecting portion 3131 and the matching portion 3141 are fixed by screws, so that the first tube sheet 313 and the second tube sheet 314 are fastened and connected.

[0074] Optionally, the number of the screw is one.

[0075] In this way, the number of screws required to seal the opening 41 of the air duct 40 is greatly reduced, which simplifies the assembly process, improves the assembly efficiency, and saves costs.

[0076] Optionally, the connecting portion 3131 is disposed on the outer side of the matching portion 3141 , or the matching portion 3141 is disposed on the outer side of the connecting portion 3131 .

[0077] The connecting portion 3131 is arranged on the outside or inside of the matching portion 3141 so that the threaded hole of the connecting portion 3131 overlaps with the threaded hole of the matching portion 3141, which facilitates the screws to pass through the threaded holes of the connecting portion 3131 and the threaded holes of the matching portion 3141 in sequence to fix the connecting portion 3131 and the matching portion 3141, thereby realizing the connection between the first tube sheet 313 and the second tube sheet 314.

[0078] Optionally, the sealing portion 22 and the main body 21 are integrally formed.

[0079] In this way, the connection strength between the sealing part 22 and the main body 21 is higher, the sealing performance of the connection between the sealing part 22 and the main body 21 is better, the sealing gasket is omitted, the number of molds is reduced, the cost is saved, and the assembly efficiency is improved.

[0080] The embodiment of the present disclosure provides an air conditioner, including an outdoor unit and an indoor unit 10, wherein the indoor unit 10 is connected to the outdoor unit.

[0081] The outdoor unit is provided with a compressor and a condenser. The compressor compresses the gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant. The gaseous refrigerant becomes a normal-temperature and high-pressure liquid refrigerant after heat dissipation in the condenser, and is finally transported to the indoor unit 10 through the capillary tube. The indoor unit 10 is provided with an evaporator 30 and a cross-flow fan. After the liquid refrigerant reaches the evaporator 30, the space suddenly increases, and it vaporizes and becomes a gaseous and low-temperature refrigerant, thereby absorbing a large amount of heat; the cross-flow fan guides the indoor air to pass through the evaporator 30, and the air is blown out from the indoor unit 10 to the environment after heat exchange in the evaporator 30 to reduce the temperature of the environment.

[0082] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An indoor unit for an air conditioner, characterized in that: include: The housing comprises a main body and a sealing portion, wherein the sealing portion is arranged at one end of the main body in the length direction; The evaporator is arranged on the main body and encloses an air duct together with the main body; The sealing part is extended from the main body toward the evaporator, an opening is arranged at one end of the air duct, and the sealing part is arranged at the opening to cover the opening.

2. The indoor unit according to claim 1, characterized in that: The main body includes a mounting portion, the mounting portion is provided with a through circular hole, the indoor unit also includes a fan, the rotating shaft of the fan is provided in the circular hole; the sealing portion includes: The fan ring structure is arranged around the outer circumference of the circular hole and blocks the opening of the air duct.

3. The indoor unit according to claim 2, characterized in that: The evaporator includes a tube sheet structure arranged at an opening, and the fan ring structure includes: The fan ring body is arranged at the opening; An extension portion is disposed on the inner side of the fan ring body and extends toward the tube sheet structure; The extension part is arranged on the inner side of the tube sheet structure and abuts against the tube sheet structure.

4. The indoor unit according to claim 3, characterized in that: The tube sheet structure includes: Tubesheet body; The folding portion is arranged on the outer side of the tube plate body and extends toward the fan ring body; The folding portion is arranged at the outer side of the extending portion and abuts against the extending portion.

5. The indoor unit according to claim 4, characterized in that: The extension portion includes a first abutting section and a first connecting section located between the first abutting section and the fan ring body, and the folding portion includes: The second abutting section is arranged outside the first abutting section; A second connecting section is provided between the second abutting section and the tube sheet body; The first abutting section extends from the first connecting section toward the second connecting section, and the second abutting section extends from the second connecting section toward the first connecting section.

6. The indoor unit according to claim 5, characterized in that: The sealing part also includes: A limiting rib is provided on the surface of the first connecting section facing the second abutting section and is provided with a limiting groove; The second abutment section is inserted into the limiting groove to limit the outward movement of the tube sheet structure relative to the sealing portion.

7. The indoor unit according to claim 6, characterized in that: The limit slots include: The guiding inclined surface is arranged at the slot opening of the limiting slot, and is inclined toward the middle of the limiting slot along the direction from the slot opening of the limiting slot to the slot bottom of the limiting slot.

8. The indoor unit according to any one of claims 3 to 7, characterized in that: The tube sheet structure also includes: A first tube sheet including a connecting portion; A second tube sheet connected to the first tube sheet, including a mating portion; The connecting portion and the matching portion are connected to connect the first tube sheet and the second tube sheet.

9. The indoor unit according to any one of claims 1 to 7, characterized in that: The sealing part and the main body are integrally formed.

10. An air conditioner, characterized in that: include: Outdoor unit; The indoor unit according to any one of claims 1 to 9, connected to an outdoor unit.

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