An air conditioner indoor unit air duct structure and an air conditioner indoor unit

Abstract

The present invention relates to an air duct structure of an indoor unit of an air conditioner and an indoor unit of an air conditioner. The air duct structure of the indoor unit of the air conditioner comprises two air duct assemblies; each of the air duct assemblies includes an air duct frame, an air blowing grid and a fan; the air duct frame includes an air duct wall, and the air duct wall and the air blowing grid enclose an air duct cavity extending along the height direction of the indoor unit and penetrating through the indoor unit in the front-back direction, and the fan is rotatably fixed in the air duct cavity; the air duct wall includes an air inlet section and an air outlet section, and a ventilation channel is arranged between the two air duct walls. One end of the ventilation channel penetrates through the air inlet section and communicates with the air duct cavity, and the other end communicates with the outside. By using the air pressure difference generated by the negative pressure generated by the rotation of the fan, outside hot air can be introduced into the air duct cavity from the outside along the ventilation channel, the temperature of the outer surface of the air duct wall can be raised above the dew point temperature, and condensation can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and particularly to an air duct structure of an indoor unit of an air conditioner and an indoor unit of an air conditioner. Background Art

[0002] With the development of air conditioning technology, people's requirements for air conditioners have increased, and there are higher requirements for their air supply comfort, appearance, etc. Usually, an air conditioner has a single air outlet, which cannot meet the needs of various air supply methods.

[0003] Please refer to Figures 1-3 , Figure 1 which is a schematic cross-sectional view of a part of the structure of an indoor unit of a dual-duct air conditioner in the prior art, Figure 2 which is a front view of a part of the structure of an indoor unit of a dual-duct air conditioner in the prior art, Figure 3 which is an exploded schematic view of a part of the structure of the indoor unit of the dual-duct air conditioner in the prior art. As shown in the figure, there are designs of air conditioners with dual ducts or even multiple ducts in the prior art. The multiple ducts are horizontally separated. The support frame 10, the left and right air ducts 20, and the left and right air outlets 30 are spliced and stacked to form a complete air duct to realize air supply. A cavity for placing the electric control structure is formed between the two air ducts. As shown in the figure, in order to prevent dew condensation in the existing structure, heat-insulating materials 50 are generally attached in the cavity, and further structures such as a middle frame or a connecting frame 40 are provided to fixedly install electric control structures such as a power board, and further heat insulation is carried out by attaching heat-insulating materials 50 to the middle frame or the connecting frame 40 to avoid dew condensation. However, the method of attaching heat-insulating materials can only prevent dew condensation for a short time. When the air conditioner operates for a long time, serious dew condensation problems will still occur, and the generated dew water is difficult to completely drain. It is easy to breed bacteria and generate odors in the air conditioner, affecting the user experience, and it is easy to cause component aging, affecting the service life of the air conditioner. Even due to the loosening of structures such as the cover plate after long-term use, the dew water enters the electric area, posing a safety hazard. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide an air duct structure of an indoor unit of an air conditioner, which has the advantages of simple structure and can effectively solve the dew condensation problem in the structure of the indoor unit of the air conditioner.

[0005] An air duct structure of an indoor unit of an air conditioner includes two air duct components;

[0006] The two air duct components are symmetrically designed. Each air duct component includes an air duct frame, an air outlet, and a fan. The air duct frame includes an air duct wall, and the air duct wall is an integrally formed part. The air duct wall and the air outlet enclose an air duct cavity extending along the height direction of the indoor unit and penetrating along the front and back directions of the indoor unit. The fan is rotatably fixed in the air duct cavity;

[0007] The air duct wall includes an air inlet section close to the back of the indoor unit and an air outlet section close to the front of the indoor unit; the air inlet sections of the two air duct walls are detachably spliced and fixed, and the edges of the air outlet sections of the two air duct walls abut against each other to form an included angle; a ventilation channel is arranged between the two air duct walls, one end of the ventilation channel penetrates through the air inlet section and communicates with the air duct cavity, and the other end communicates with the outside;

[0008] The air inlet section includes a first air inlet section and a second air inlet section which are fixedly connected, and the first air inlet section and the second air inlet section form an included angle; the ventilation channel includes a first ventilation channel, a second ventilation channel and a third ventilation channel, the first ventilation channel is a first ventilation through hole penetrating through each first air inlet section, and the third ventilation channel is a second ventilation through hole penetrating through the connection part of the two air outlet sections.

[0009] In the air duct structure of the indoor unit of the air conditioner according to the embodiment of the present invention, by symmetrically designing two air duct components, the air duct cavity is formed by enclosing the air duct wall formed by integral molding and the blowing grid, and the two air duct walls are detachably fixed between them, with a simple structure and convenient disassembly and assembly operations, which is convenient for assembly, helps to improve production efficiency and reduce production costs; in addition, through the arrangement of the ventilation channel, one end of which penetrates through the air inlet section and communicates with the air duct cavity, and the other end communicates with the outside, during the use process, due to the rotation of the fan, a negative pressure is formed near the air inlet section, and the outside hot air can be introduced into the air duct cavity from the outside along the ventilation channel by the action of the air pressure difference. The introduction of a small amount of hot air does not affect the normal refrigeration of the indoor unit of the air conditioner, but the hot air flowing along the ventilation duct can raise the temperature of the outer surface of the air duct wall above the dew point temperature, thereby avoiding the air duct wall from being radiated by the cold air in the air duct cavity for a long time, reducing the generation of condensed water, being able to reduce the use of thermal insulation materials, reduce production costs, and at the same time avoid the influence on the electrical installation structure and even potential safety hazards caused by the cold quantity radiating to the electrified area and then causing condensed water in this area.

[0010] Further, the air inlet section includes a first air inlet section and a second air inlet section which are fixedly connected, and the first air inlet section and the second air inlet section form an included angle; the edge of the second air inlet section is fixedly connected to the arc section; the ventilation channel includes a first ventilation channel, a second ventilation channel and a third ventilation channel, the first ventilation channel is a first ventilation through hole penetrating through each first air inlet section, the second ventilation channel is located between the two arc sections, and the third ventilation channel is a second ventilation through hole penetrating through the connection part of the two air outlet sections.

[0011] Furthermore, the number of the first ventilation through-holes is at least 3, and they are evenly arranged along the height direction of the indoor unit; the number of the second ventilation through-holes is at least 2 to form a sufficient air pressure difference to ensure the air flow in the ventilation channel.

[0012] Furthermore, it further includes a fixing member, which includes a first fixing member and a second fixing member that are movably engaged. The first fixing member and the second fixing member are arranged between the two duct walls and are respectively fixedly connected to the first air inlet sections of the two duct walls.

[0013] Furthermore, it further includes a guiding member; the duct wall further includes an arc section, the cross-section of which is arc-shaped, and its two sides are respectively fixedly connected to the air inlet section and the air outlet section; the arc sections of the two duct walls are arranged back to back; the guiding member includes a first guiding member and a second guiding member that are movably engaged. The first guiding member and the second guiding member are arranged between the two duct walls and are respectively fixedly connected to the arc sections of the two duct walls. The arrangement of the guiding member can play a guiding and positioning role during the installation and splicing process of the two duct components. Cooperating with the arrangement of the positioning member can reduce the tolerance during the installation and splicing process, ensure the symmetry of the two duct components, and can correct the slight deformation of the duct structure.

[0014] Furthermore, the first fixing member and the duct wall, and the second fixing member and the duct wall are both integrally formed parts; the first guiding member and the duct wall, and the second guiding member and the duct wall are both integrally formed parts. Integral forming can improve the mechanical strength of the structure, extend the service life, reduce the assembly process, and lower the production cost.

[0015] In addition, an embodiment of the present invention further provides an indoor unit of an air conditioner, which includes a rear panel, a heat exchanger, a connection frame, an electrical component section, two drive motors, and the air duct structure of the indoor unit of the air conditioner described above; the cross-section of the rear panel is in an arc structure, and the opening of the arc structure faces the front of the indoor unit; both sides of the rear panel are detachably fixed to the air outlet grids of the two air duct components respectively; the cross-section of the heat exchanger is in an arc structure, and the opening of the arc structure faces the front of the indoor unit; both sides of the heat exchanger are detachably fixed to the air outlet grids of the two air duct components respectively, and the surface of the heat exchanger abuts against the abutting surface; the connection frame faces the front of the indoor unit, and both sides of it are detachably fixed to the edges of the air duct walls of the two air duct components respectively, and enclose a through space extending along the height direction of the indoor unit with the air outlet sections of the two air duct walls. The through space is connected to the ventilation channel, and both the bottom and the top of it are connected to the outside; the electrical component section is detachably fixed to one side of the connection frame facing the front of the indoor unit; a motor mounting position is further provided on the upper end surface of the air duct frame, and the drive motor is detachably fixed to the motor mounting position and is drivingly connected to the fan.

[0016] For the indoor unit of the air conditioner in the embodiment of the present invention, by using the air outlet sections of the air duct walls and the connection frame to enclose a through space, through the setting of the through space, after the whole unit is assembled, there is a temperature difference between the components with rising temperature during the operation of the drive motor and other components that are cooled by the cold radiation of the air in the air duct cavity, driving the air flow, which can reduce the generation of condensed water to a certain extent; combined with the setting of the ventilation channel, and the generated condensed water can flow from the through space, combined with the drainage structure of the air conditioner, the condensed water can be quickly discharged, further avoiding the accumulation of condensed water affecting the use of the air conditioner and causing problems such as peculiar smell and component aging. The air conditioner in the embodiment of the present invention has the advantages of simple structure, low production and processing cost, stable performance and long service life.

[0017] Furthermore, heat insulation materials are provided on the sides of the air outlet section and the connection frame facing the through space. The attachment of the heat insulation materials can improve the heat insulation effect and further avoid the generation of condensed water.

[0018] Further, a number of water diversion ribs are convexly provided on the heat insulation material. The water diversion ribs are arranged in sequence along the height direction of the indoor unit, and each water diversion rib forms an angle with the vertical direction, and the angle is not greater than 90°. The above arrangement of the water diversion ribs can be used to guide the flow of condensed water, enabling it to flow downward smoothly and quickly and be further discharged, avoiding the long-term attachment of condensed water, thereby causing problems such as peculiar smell and component aging, and can also prevent the condensed water from directly falling from a high place and generating a water dropping sound, which affects the use. Or, each water diversion rib is horizontally arranged, a number of water diversion ribs are evenly arranged in sequence along the height direction of the indoor unit, and the convex height of the water diversion rib increases as the height decreases. The above arrangement of the water diversion ribs can be used to temporarily carry the condensed water generated outside the air duct structure, control the position where it drops, and prevent it from directly falling from a high place and generating a water dropping sound, which affects the use.

[0019] Further, the air duct frame further includes an upper end surface located at the top of the indoor unit and a chassis located at the bottom of the indoor unit. A drainage groove is provided on the upper end surface, a drainage port is opened at the bottom of the drainage groove, and the drainage port is communicated with the top of the through space; the arrangement of the drainage groove and the drainage port can collect the condensed water formed on the upper end surface of the air duct frame and lead it to the through space; a water receiving tray is provided on the chassis, the water receiving tray is communicated with the bottom of the through space, and the water receiving tray is used to collect the condensed water falling in the through space, facilitating the user to clean.

[0020] For better understanding and implementation, the present invention will be described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic cross-sectional view of a partial structure of an indoor unit of a dual-duct air conditioner in the prior art;

[0022] Figure 2 is a front view of a partial structure of an indoor unit of a dual-duct air conditioner in the prior art;

[0023] Figure 3 is an exploded schematic view of a partial structure of the indoor unit of the dual-duct air conditioner in the prior art;

[0024] Figure 4 is a schematic cross-sectional view of the air duct structure of the indoor unit of the air conditioner according to Embodiment 1 of the present invention Figure 1 ;

[0025] Figure 5 is a schematic cross-sectional view of the air duct structure of the indoor unit of the air conditioner according to Embodiment 1 of the present invention Figure 2 ;

[0026] Figure 6Schematic diagram of the overall structure of the air duct structure of the indoor unit of the air conditioner according to Embodiment 1 of the present invention;

[0027] Figure 7 Partial schematic diagram of the air duct structure of the indoor unit of the air conditioner according to Embodiment 1 of the present invention;

[0028] Figure 8 Schematic diagram of the working principle of the air duct structure of the indoor unit of the air conditioner according to Embodiment 1 of the present invention Figure 1 ;

[0029] Figure 9 Schematic diagram of the working principle of the air duct structure of the indoor unit of the air conditioner according to Embodiment 1 of the present invention Figure 2 ;

[0030] Figure 10 Schematic diagram of the cross-sectional structure of the indoor unit of the air conditioner according to Embodiment 2 of the present invention. Detailed implementation manners

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0032] Example 1

[0033] Please refer to Figures 4-5 , Figure 4 Cross-sectional schematic diagram of the air duct structure of the indoor unit of the air conditioner according to Embodiment 1 of the present invention Figure 1 , Figure 5 Cross-sectional schematic diagram of the air duct structure of the indoor unit of the air conditioner according to Embodiment 1 of the present invention Figure 2 , as shown in the figure, Embodiment 1 of the present invention provides an air duct structure for an indoor unit of an air conditioner, which includes two air duct components.

[0034] The two air duct components are symmetrically designed. Each air duct component includes an air duct frame 30, a blowing grid 40, and a fan 10; the air duct frame 30 includes an air duct wall 31, and the air duct wall 31 is an integrally formed part; the air duct wall 31 and the blowing grid 40 enclose an air duct cavity extending along the height direction of the indoor unit and penetrating along the front-rear direction of the indoor unit, and the fan 10 is rotatably fixed in the air duct cavity;

[0035] The air duct wall 31 includes an air inlet section 311 close to the back of the indoor unit and an air outlet section 312 close to the front of the indoor unit; the air inlet sections 311 of the two air duct walls 31 are detachably spliced and fixed, and the edges of the air outlet sections 312 of the two air duct walls 31 abut against each other to form an included angle; a ventilation channel is arranged between the two air duct walls 31, one end of the ventilation channel penetrates through the air inlet section 311 and communicates with the air duct cavity, and the other end communicates with the outside.

[0036] For the air duct structure of the indoor unit of the air conditioner in Embodiment 1 of the present invention, by symmetrically designing two air duct components, the air duct cavity is formed by enclosing with the integrally formed air duct wall and the blowing grid. The two air duct walls are detachably fixed, with a simple structure and convenient disassembly and assembly operations, facilitating assembly, helping to improve production efficiency and reduce production costs; in addition, through the arrangement of the ventilation channel, one end of which penetrates through the air inlet section and communicates with the air duct cavity, and the other end communicates with the outside. During use, due to the rotation of the fan, a negative pressure is formed near the air inlet section, and the outside hot air can be introduced into the air duct cavity along the ventilation channel by the action of the air pressure difference. The introduction of a small amount of hot air has no obvious impact on the normal refrigeration of the indoor unit of the air conditioner. While ensuring the user experience, the hot air flowing along the ventilation air duct can raise the temperature of the outer surface of the air duct wall above the dew point temperature, thereby avoiding the problem that the air duct wall has too low a temperature due to the long-term radiation of the cold air in the air duct cavity, effectively reducing the generation of condensed water, being able to reduce the use of thermal insulation materials, reduce production costs, and at the same time avoid the problem that the cold quantity radiates to the electrified area, resulting in the generation of condensed water in this area, further affecting the electrical installation structure and even having potential safety hazards.

[0037] Specifically, the cross-sectional shape of the air inlet section is designed in cooperation with the air duct curve and the fan size to further optimize the air path and reduce energy loss. For example, in this embodiment, the cross-section of the air inlet section 311 is in an L-shaped structure. In other embodiments, the cross-section of the air inlet section can also be in other structures, such as the air inlet sections of the two air duct components can form a boss-like structure; the air inlet section 311 includes a first air inlet section and a second air inlet section fixedly connected, and the first air inlet section and the second air inlet section form an included angle; the edge of the second air inlet section is fixedly connected to the arc section 315; please refer to Figures 5-7 , Figure 5 which is a cross-sectional schematic view of the air duct structure of the indoor unit of the air conditioner in Embodiment 1 of the present invention Figure 2 , Figure 6 which is a schematic diagram of the overall structure of the air duct structure of the indoor unit of the air conditioner in Embodiment 1 of the present invention, Figure 7This is a partial schematic diagram of the air duct structure of the indoor unit of the air conditioner according to Embodiment 1 of the present invention. The ventilation channel includes a first ventilation channel, a second ventilation channel, and a third ventilation channel. The first ventilation channel is a first ventilation through hole 313 penetratingly opened in each of the first air inlet sections. The second ventilation channel is located between two arc-shaped sections 315. The third ventilation channel is a second ventilation through hole 314 penetratingly opened at the connection of two air outlet sections 312.

[0038] Further preferably, the number of the first ventilation through holes 313 is at least 3, and they are uniformly arranged along the height direction of the indoor unit. The number of the second ventilation through holes 314 is at least 2 to form a sufficient air pressure difference to ensure the flow of air in the ventilation channel.

[0039] As an alternative embodiment, please refer to Figure 4 , in this embodiment, the air duct structure of the indoor unit of the air conditioner further includes a fixing member 20. The fixing member 20 includes a first fixing member and a second fixing member that are movably engaged. The first fixing member and the second fixing member are arranged between two air duct walls 31 and are respectively fixedly connected to the first air inlet sections of the two air duct walls 31. The detachable fixing of the air duct walls 31 of the two air duct components is realized by the movable engagement of the first fixing member and the second fixing member. The disassembly and assembly operations are simple, which helps to improve the production and processing efficiency.

[0040] The air duct structure of the indoor unit of the air conditioner further includes a guiding member 70; the air duct wall 31 further includes an arc-shaped section 315. The cross section of the arc-shaped section 315 is arc-shaped, and its two sides are respectively fixedly connected to the air inlet section 311 and the air outlet section 312; the arc-shaped sections 315 of the two air duct walls 31 are arranged back to back; the guiding member 70 includes a first guiding member and a second guiding member that are movably engaged. The first guiding member and the second guiding member are arranged between two air duct walls 31 and are respectively fixedly connected to the arc-shaped sections 315 of the two air duct walls 31. The setting of the guiding member 70 can play a guiding and positioning role during the installation and splicing process of the two air duct components. Cooperating with the setting of the positioning member can reduce the tolerance during the installation and splicing process, ensure the symmetry of the two air duct components, and can correct the slight deformation of the air duct structure.

[0041] Further preferably, the first fixing member and the air duct wall 31, and the second fixing member and the air duct wall 31 are both integrally formed parts; the first guiding member and the air duct wall 31, and the second guiding member and the air duct wall 31 are both integrally formed parts. Integral forming can improve the mechanical strength of the structure, extend the service life, and at the same time reduce the assembly process and lower the production cost.

[0042] When the air duct structure of the indoor unit of the air conditioner according to Embodiment 1 of the present invention operates, the fan 10 rotates in the air duct cavity, generates a negative pressure around the air inlet section 311, and forms a pressure difference, so that hot air can be introduced from the outside through the ventilation channel. Please refer to Figure 8 and 9 , Figure 8 which is a schematic diagram of the working principle of the air duct structure of the indoor unit of the air conditioner according to Embodiment 1 of the present invention Figure 1 , Figure 9 which is a schematic diagram of the working principle of the air duct structure of the indoor unit of the air conditioner according to Embodiment 1 of the present invention Figure 2 , the flowing direction of the hot air introduced from the outside is as shown by the arrows in Figure 8 and 9 . After a small amount of hot air is introduced, it is mixed with the cold air in the air duct cavity and blown out, which has no obvious influence on the normal refrigeration of the indoor unit of the air conditioner. While ensuring the user experience, the hot air flowing along the ventilation air duct can raise the temperature of the outer surface of the air duct wall 31 above the dew point temperature, thereby avoiding the problem that the air duct wall has too low a temperature due to the long-term radiation of the cold air in the air duct cavity, effectively reducing the generation of condensed water, being able to reduce the use of thermal insulation materials, reduce production costs, and at the same time avoid the problem that the cold quantity radiates to the electrified area, thereby causing condensed water to be generated in this area, further affecting the electrical installation structure, and even having potential safety hazards.

[0043] Example 2

[0044] Please refer to Figure 10 , Figure 10Schematic cross-sectional view of the indoor unit of the air conditioner according to Embodiment 2 of the present invention, as shown in the figure. Embodiment 2 of the present invention provides an indoor unit of an air conditioner, which includes a rear panel 1, a heat exchanger 2, a connection frame 3, an electrical component (not shown in the figure), two drive motors (not shown in the figure), and the air duct structure of the indoor unit of the air conditioner described in Embodiment 1; the cross-section of the rear panel 1 is in an arc structure, and the opening of the arc structure faces the front of the indoor unit; both sides of the rear panel 1 are detachably fixed to the blowing grids 40 of the two air duct components respectively; the cross-section of the heat exchanger 2 is in an arc structure, and the opening of the arc structure faces the front of the indoor unit; both sides of the heat exchanger 2 are detachably fixed to the blowing grids 40 of the two air duct components respectively, and the surface of the heat exchanger 2 abuts against the abutting surface; the connection frame 3 faces the front of the indoor unit, and both sides of it are detachably fixed to the edges of the air duct walls 31 of the two air duct components respectively, and enclose a through space extending along the height direction of the indoor unit with the air outlet sections 312 of the two air duct walls 31. The through space is connected to the ventilation channel, and both its bottom and top are connected to the outside; the electrical component is detachably fixed to one side of the connection frame 3 facing the front of the indoor unit; a motor mounting position is also provided on the upper end surface of the air duct frame 30, and the drive motor is detachably fixed to the motor mounting position and is drivingly connected to the fan 10.

[0045] For the indoor unit of the air conditioner described in Embodiment 1 of the present invention, a through space is formed by enclosing the air outlet section 312 of the air duct wall 31 and the connection frame 3. Through the setting of the through space, after the whole unit is assembled, there is a temperature difference between the components with rising temperature during the operation of the drive motor and other components that are cooled by the air in the air duct cavity, driving the air flow, which can reduce the generation of condensed water to a certain extent; combined with the setting of the ventilation channel, by introducing external hot air, the generation of condensed water in the indoor unit of the air conditioner is further reduced, and the generated condensed water can flow from the through space. Further combined with the drainage structure of the air conditioner, the condensed water can be quickly discharged, effectively avoiding the problem that the accumulation of condensed water affects the use of the air conditioner and causes problems such as peculiar smell and component aging. The indoor unit of the air conditioner described in the embodiment of the present invention has the advantages of simple structure, low production and processing cost, stable performance and long service life.

[0046] As an alternative embodiment, in this embodiment, heat insulation materials 50 are provided on both the air outlet section 312 and the side of the connection frame 3 facing the through space. The attachment of the heat insulation materials 50 can improve the heat insulation effect and further avoid the generation of condensed water.

[0047] Further preferably, a number of water diversion ribs 60 are provided in a protruding manner on the heat insulation material 50. As an alternative embodiment, in this embodiment, the number of water diversion ribs 60 are arranged in sequence along the height direction of the indoor unit, and each water diversion rib 60 forms an angle with the vertical direction, and the angle is not greater than 90°. The above arrangement of the water diversion ribs 60 can be used to guide the flow of condensed water, enabling it to flow downward smoothly and quickly and be further discharged, avoiding the long-term attachment of condensed water, thereby causing problems such as peculiar smell and component aging, and can also prevent the condensed water from falling directly from a high place and generating a water dropping sound, affecting the use; in other embodiments, each water diversion rib 60 can be arranged horizontally, the number of water diversion ribs 60 are arranged evenly in sequence along the height direction of the indoor unit, and the protruding height of the water diversion rib 60 increases as the height decreases. The above arrangement of the water diversion rib 60 can be used to temporarily carry the condensed water generated outside the air duct structure, control its falling position, and prevent it from falling directly from a high place and generating a water dropping sound, affecting the use.

[0048] As an alternative embodiment, the air duct frame 30 further includes an upper end face located at the top of the indoor unit and a chassis located at the bottom of the indoor unit. The upper end face is provided with a drainage groove (not shown in the figure), the bottom of the drainage groove is provided with a drainage port, and the drainage port is communicated with the top of the through space; the arrangement of the drainage groove and the drainage port can collect the condensed water formed on the upper end face of the air duct frame 30 and lead it to the through space; the chassis is provided with a water receiving tray (not shown in the figure), the water receiving tray is communicated with the bottom of the through space, and the water receiving tray is used to collect the condensed water falling in the through space, facilitating the user to clean.

[0049] The above embodiments only represent several implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. An air duct structure of an indoor unit of an air conditioner, characterized in that: It includes two air duct components; The two air duct components are symmetrically designed. Each air duct component includes an air duct frame, a blowing grid, and a fan. The air duct frame includes an air duct wall, and the air duct wall is an integrally formed part. The air duct wall and the blowing grid enclose an air duct cavity that extends along the height direction of the indoor unit and penetrates along the front-rear direction of the indoor unit. The fan is rotatably fixed in the air duct cavity; The air duct wall includes an air inlet section near the back of the indoor unit and an air outlet section near the front of the indoor unit. The air inlet sections of the two air duct walls are detachably spliced and fixed. The edges of the air outlet sections of the two air duct walls abut against each other and form an angle. A ventilation channel is provided between the two air duct walls. One end of the ventilation channel penetrates through the air inlet section and communicates with the air duct cavity, and the other end communicates with the outside; The air inlet section includes a first air inlet section and a second air inlet section that are fixedly connected. The first air inlet section and the second air inlet section form an angle. The ventilation channel includes a first ventilation channel, a second ventilation channel, and a third ventilation channel. The first ventilation channel is a first ventilation through hole that is formed through each of the first air inlet sections. The third ventilation channel is a second ventilation through hole that is formed through the connection part of the two air outlet sections.

2. The air duct structure of the indoor unit of the air conditioner according to claim 1, wherein: The number of the first ventilation through holes is at least 3, and they are evenly arranged along the height direction of the indoor unit.

3. The air duct structure of the indoor unit of the air conditioner according to claim 1, wherein: It further includes a fixing member. The fixing member includes a first fixing member and a second fixing member that are movably engaged. The first fixing member and the second fixing member are arranged between the two air duct walls and are respectively fixedly connected to the first air inlet sections of the two air duct walls. The second fixing member is located on the side of the first fixing member facing the front of the indoor unit, and the surface of the first fixing member facing the back of the indoor unit is an abutting surface.

4. The air duct structure of the indoor unit of the air conditioner according to claim 3, wherein: It further includes a guiding member. The air duct wall further includes an arc section. The cross-section of the arc section is arc-shaped, and its two sides are respectively fixedly connected to the air inlet section and the air outlet section. The arc sections of the two air duct walls are arranged back to back. The guiding member includes a first guiding member and a second guiding member that are movably engaged. The first guiding member and the second guiding member are arranged between the two air duct walls and are respectively fixedly connected to the arc sections of the two air duct walls.

5. The air duct structure of the indoor unit of the air conditioner according to claim 4, characterized in that: The first fixing member and the air duct wall, the second fixing member and the air duct wall are all integrally formed parts. The first guiding member and the air duct wall, the second guiding member and the air duct wall are all integrally formed parts.

6. An indoor unit of an air conditioner, characterized in that: It includes a rear panel, a heat exchanger, a connection frame, an electrical component unit, two drive motors, and the air duct structure of the indoor unit of the air conditioner according to any one of claims 3-5; the cross-section of the rear panel is in an arc structure, and the opening of the arc structure faces the front of the indoor unit; both sides of the rear panel are detachably fixed to the blowing grids of the two air duct components respectively; the cross-section of the heat exchanger is in an arc structure, and the opening of the arc structure faces the front of the indoor unit; both sides of the heat exchanger are detachably fixed to the blowing grids of the two air duct components respectively, and the surface of the heat exchanger abuts against the abutting surface; the connection frame faces the front of the indoor unit, and both sides of it are detachably fixed to the edges of the air duct walls of the two air duct components respectively, and enclose a through space extending along the height direction of the indoor unit with the air outlet sections of the two air duct walls. The through space is communicated with the ventilation channel, and both its bottom and top are communicated with the outside; the electrical component unit is detachably fixed to one side of the connection frame facing the front of the indoor unit; a motor mounting position is further provided on the upper end surface of the air duct frame, and the drive motor is detachably fixed to the motor mounting position and is drivingly connected to the fan.

7. The indoor unit of an air conditioner according to claim 6, characterized in that: Heat insulation materials are provided on both the air outlet section and the side of the connection frame facing the through space.

8. The indoor unit of an air conditioner according to claim 7, characterized in that: A number of water guiding ribs are convexly provided on the heat insulation material. The number of water guiding ribs are arranged in sequence along the height direction of the indoor unit, and each water guiding rib forms an angle with the vertical direction, and the angle is not greater than 90°; alternatively, each water guiding rib is horizontally arranged, and the number of water guiding ribs are evenly arranged in sequence along the height direction of the indoor unit, and the convex height of the water guiding rib increases as the height decreases.

9. The indoor unit of an air conditioner according to claim 6, characterized in that: The air duct frame further includes an upper end surface at the top of the indoor unit and a chassis at the bottom of the indoor unit. A drain groove is provided on the upper end surface, and a drain port is opened at the bottom of the drain groove. The drain port is communicated with the top of the through space; a water receiving tray is provided on the chassis, and the water receiving tray is communicated with the bottom of the through space.

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