Indoor unit of air conditioner

Abstract

The utility model provides an indoor unit of an air conditioner, which can solve the problem of fluid channeling between a centrifugal unit and a cross-flow unit of a fan in the prior art. The air conditioner indoor unit comprises a shell, a fresh air shell, a fresh air fan and a first fresh air guide plate. The fresh air shell is arranged in the shell, and the fresh air fan is arranged in the fresh air shell; the first fresh air guide plate is arranged in the fresh air shell, one end is fixed, and the other end is movable. The first fresh air guide plate can adjust the air outlet proportion of fresh air from the first fresh air outlet to the second fresh air outlet. Through the first fresh air guide plate structure arranged on the fresh air shell, the air outlet proportion of fresh air at different fresh air outlets can be adjusted, so that the requirements of users in different use environments are met.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to a structural improvement of an outdoor unit of an air conditioner. Background Art

[0002] At present, the fresh air outlet of the wall-mounted air-conditioning indoor unit is generally installed at the top of the air-conditioning indoor unit. The fresh air is discharged from the top of the air-conditioning indoor unit, resulting in poor visibility and serious homogeneity of the fresh air outlet. Users cannot see the fresh air outlet and it is easy to cause aesthetic fatigue. The small fresh air volume and the difficult to visualize air outlet form cannot allow users to intuitively feel the fresh air function.

[0003] In addition, fresh air is the introduction of outdoor air into the room. When the outdoor temperature is cold in winter and hot in summer, the temperature of the fresh air outlet and the temperature of the air-conditioning outlet will be different. Therefore, the fresh air function of the air-conditioning indoor unit blows hot air in summer and cold air in winter, which has become a technical pain point of many fresh air air conditioners. When there is a significant temperature difference between the temperature of the fresh air outlet and the temperature of the air-conditioning outlet, when the fresh air function is turned on, the user will feel two airflows of different temperatures, which will cause obvious discomfort to the user and result in a poor user experience.

[0004] The fresh air module of the traditional air-conditioning indoor unit usually discharges air from the fresh air outlet with a fixed air volume, and the air outlet form is relatively simple. When the fresh air function of the air conditioner is turned on, the fresh air is discharged from one or more fresh air outlets, and the air volume between different fresh air outlets cannot be adjusted, and the fresh air outlet mode cannot be switched. The inability to meet users' needs for fresh air outlet in different usage environments is a technical pain point of the current fresh air air conditioners. Utility Model Content

[0005] Problem to be solved

[0006] The utility model aims to provide an indoor unit of an air-conditioning system, by arranging a first fresh air guide plate with one end fixed and the other end movable in a fresh air casing, so as to control the fresh air to be discharged from different fresh air outlets, and by switching the position of the first fresh air guide plate in the fresh air casing, the air volume discharged from different fresh air outlets is adjusted to solve the problem that the fresh air outlet volume is difficult to adjust.

[0007] The purpose of the present invention is not limited to the above-mentioned purpose, and those skilled in the art can clearly understand the other mentioned purposes from the following description.

[0008] Technical solutions to the problem

[0009] In some embodiments of the present application, an air conditioner indoor unit is proposed, comprising:

[0010] A shell, wherein a heat exchange air duct is arranged inside the shell along the length direction; an indoor air inlet is opened at the top of the shell, an indoor air outlet is opened at the front bottom of the shell, and the heat exchange air duct is connected with the indoor air inlet and the indoor air outlet;

[0011] An indoor heat exchanger, wherein the indoor heat exchanger is disposed in the heat exchange air duct, and the indoor heat exchanger performs heat exchange on the air passing through the indoor heat exchanger to form a heat exchange airflow;

[0012] A heat exchange fan, the heat exchange fan is arranged in the heat exchange air duct, and the heat exchange fan is arranged below the indoor heat exchanger; the indoor air flow enters the shell through the indoor air inlet and is output from the indoor air outlet after being heat exchanged by the indoor heat exchanger;

[0013] Fresh air housing;

[0014] A fresh air fan is arranged in the fresh air housing;

[0015] A first fresh air guide plate, wherein one end of the first fresh air guide plate is a fixed end and is provided with a fixed shaft, and the other end of the first fresh air guide plate is a movable end, and the movable end can be abutted against the fresh air housing;

[0016] When the mobile end abuts against the lower side of the fresh air housing, the fresh air in the fresh air housing is discharged only through the space between the first fresh air plate and the upper side of the fresh air housing;

[0017] When the mobile end abuts against the upper side of the fresh air housing, the fresh air in the fresh air housing is discharged only through the space between the first fresh air plate and the lower side of the fresh air housing;

[0018] When the mobile end moves in the fresh air housing, the first fresh air guide plate can control the amount of fresh air passing through the space between the first fresh air plate and the upper side of the fresh air housing, and the first fresh air guide plate can control the amount of fresh air passing through the space between the first fresh air plate and the lower side of the fresh air housing.

[0019] In some embodiments of the present application, the air conditioner indoor unit further includes:

[0020] The second fresh air guide plate is arranged in the fresh air housing. The second fresh air guide plate is located in the fresh air housing and is located on a side of the first fresh air guide plate close to the fresh air fan.

[0021] In some embodiments of the present application, the air conditioner indoor unit further includes:

[0022] The fresh air housing comprises a first fresh air housing and a second fresh air housing;

[0023] The first fresh air housing is connected to the second fresh air housing to form a fresh air guide port;

[0024] The fresh air guide port includes a first air guide port and a second air guide port. The fresh air passes through the space between the first fresh air plate and the upper side of the fresh air shell and passes through the first air guide port. The fresh air passes through the space between the first fresh air plate and the lower side of the fresh air shell and passes through the second air guide port.

[0025] In some embodiments of the present application, a fresh air duct is connected to the fresh air casing and communicated with the first air guide port, the fresh air duct is provided with a first fresh air outlet, the fresh air duct is communicated with the fresh air casing through the first air guide port, and fresh air enters the fresh air duct from the space between the first fresh air plate and the upper side of the fresh air casing and is discharged from the first fresh air outlet.

[0026] In some embodiments of the present application, the fresh air guide portion is connected to the fresh air shell and communicated with the second air guide port, the fresh air guide portion is provided with a second fresh air outlet, the fresh air guide portion is communicated with the fresh air shell through the second air guide port, and the fresh air enters the fresh air guide portion from the space between the first fresh air plate and the lower side of the fresh air shell and is discharged from the second fresh air outlet.

[0027] In some embodiments of the present application, the first fresh air outlet is arranged at the indoor air outlet, and the fresh air discharged from the first fresh air outlet is discharged into the room along the indoor air outlet.

[0028] In some embodiments of the present application, the second fresh air outlet is arranged at the indoor air outlet, and the fresh air discharged from the second fresh air outlet is discharged into the room along the indoor air outlet.

[0029] In some embodiments of the present application, the second fresh air guide plate is provided with through holes, so that the fresh air passes through the second fresh air guide plate to exchange airflow in the spaces on both sides of the second fresh air guide plate.

[0030] Technical Effects

[0031] The air conditioner indoor unit of the utility model has one or more of the following effects.

[0032] First, in the present application, when the fresh air is discharged from the upper side of the indoor air outlet, the mixing effect with the air outlet of the air conditioner is good. When the fresh air is discharged from the left or right side of the indoor air outlet, the fresh air path is short, the fresh air volume loss is small, and the fresh air volume is large. By switching the position of the first fresh air guide plate, the fresh air is controlled to be discharged from the upper side of the indoor air outlet or the left or right side of the indoor air outlet. Users can choose different air outlet methods to meet different usage needs.

[0033] Second, in the present application, by switching the position of the first fresh air guide plate, the fresh air can be discharged from the upper side of the indoor air outlet or the left or right side of the indoor air outlet and the outlet ratio of the fresh air on the upper side of the indoor air outlet and the left or right side of the indoor air outlet can be controlled to meet various user needs in different usage environments and enhance user experience.

[0034] Third, in the present application, the fresh air outlet is located at the indoor air outlet, and the fresh air can be discharged from the upper side of the indoor air outlet or the left or right side of the indoor air outlet. The fresh air outlet and the air-conditioning outlet can be effectively mixed to reduce the discomfort caused by the large temperature difference between the fresh air outlet and the air-conditioning outlet.

[0035] Fourth, in the present application, the fresh air is located at the indoor air outlet. Compared with the traditional structure in which the fresh air is discharged from the top side of the air-conditioning indoor unit, this structure improves the visibility of the fresh air outlet and avoids the shortcomings of low visibility of the fresh air and poor user experience caused by the top side outlet of the fresh air.

[0036] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0038] Figure 1 A front view of the indoor unit of the air conditioner of the present application;

[0039] Figure 2 A right side view of the indoor unit of the air conditioner of the present application;

[0040] Figure 3 A three-dimensional diagram of an indoor unit of an air conditioner according to the present application;

[0041] Figure 4 A three-dimensional diagram of the fresh air housing and the fresh air duct of the present application;

[0042] Figure 5 An exploded view of the fresh air casing of this application;

[0043] Figure 6 This is an exploded view of the fresh air duct of this application;

[0044] Figure 7 This is an exploded view of the fresh air duct of this application from another perspective;

[0045] Figure 8This is a cross-sectional view of the first fresh air guide plate of the present application being located at the third position;

[0046] Fig. 9 This is a cross-sectional view of the first fresh air guide plate of the present application in the first position;

[0047] Fig.10 This is a cross-sectional view of the first fresh air guide plate of the present application being located at the second position;

[0048] Fig.11 A cross-sectional view of the indoor unit of the air conditioner of the present application from another perspective;

[0049] Fig.12 A front view of the indoor air outlet of the present application;

[0050] Reference numerals:

[0051] 10 housing, 11 heat exchange air duct, 12 indoor air inlet;

[0052] 20 fresh air housing, 21 first fresh air housing, 22 second fresh air housing, 221 fresh air grille, 23 first air cavity, 231 fresh air fan, 232 first fresh air channel, 233 second fresh air channel, 24 air guide port, 241 first air guide port, 242 second air guide port, 25 third fresh air housing, 26 second air cavity, 271 filter housing, 272 filter port, 273 filter track, 28 fresh air inlet, 291 first fresh air guide plate, 292 second fresh air guide plate;

[0053] 30 fresh air duct, 31 first duct assembly, 32 second duct assembly, 33 first clamping portion, 331 first hook portion, 332 first slot portion, 34 second clamping portion, 341 second hook portion, 342 second slot portion, 35 first fresh air outlet, 36 raised portion, 37 air outlet gap, 38 fresh air outlet channel, 39 bent portion;

[0054] 40 fresh air guide portion, 41 second fresh air outlet, 42 receiving cavity, 43 second grille, 44 partition portion;

[0055] 50 indoor air outlet, 51 heat exchange air outlet, 52 first grille;

[0056] 61 drain pipe, 62 motor. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0058] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present application.

[0059] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0060] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0061] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0062] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0063] In the present application, the air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation to cool or heat the indoor space.

[0064] The low-temperature and low-pressure refrigerant enters the compressor, which compresses it into high-temperature and high-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0065] The expansion valve expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the low-temperature and low-pressure refrigerant gas to the compressor. The evaporator can achieve a cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the entire cycle, the air conditioner can adjust the temperature of the indoor space.

[0066] The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

[0067] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger functions as a condenser, the air conditioner functions as a heater in a heating mode, and when the indoor heat exchanger functions as an evaporator, the air conditioner functions as a cooler in a cooling mode.

[0068] This application proposes an air conditioner indoor unit, Figures 1 to 12 The air conditioner indoor unit of the present application is described.

[0069] Reference Figures 1 to 3The directions described in the text are based on the direction in which the user faces the air conditioner indoor unit, wherein the side of the air conditioner indoor unit facing the user when in use is defined as the front side of the air conditioner indoor unit, the side opposite to the front side is defined as the rear side, and the left and right sides of the air conditioner indoor unit are defined as the left and right sides of the user when the user faces the air conditioner indoor unit. The top and bottom ends of the air conditioner indoor unit are the two ends set in the height direction when it is hung on a wall or other structure. The top and bottom ends of the casing are the two ends set in the height direction, the front and rear sides of the casing are the two sides set in the width direction, and the left and right ends of the casing are the two ends set in the length direction.

[0070] In this embodiment, the air conditioner indoor unit may be a wall mounted unit or other structure.

[0071] The shell forms the overall appearance of the air conditioner indoor unit, and the accommodating space defined inside the shell is a heat exchange air duct.

[0072] refer to Figures 1 to 3 The air conditioner indoor unit of the embodiment of the present application includes a shell 10, an indoor heat exchanger, a heat exchange fan, a fresh air housing 20, a fresh air duct 30, a fresh air fan 231 and a drain pipe 61.

[0073] In some embodiments of the present application, a heat exchange air duct 11 is arranged inside the shell 10 along the length direction, an indoor air inlet 12 is opened at the top of the shell 10, and an indoor air outlet 50 is opened at the front bottom of the shell 10, and the heat exchange air duct 11 is connected with the indoor air inlet 12 and the indoor air outlet 50.

[0074] refer to Figure 4 and Figure 5 The fresh air housing 20 is composed of a first fresh air housing 21 , a second fresh air housing 22 and a third fresh air housing 25 .

[0075] The first fresh air shell 21 is connected to the second fresh air shell 22, and a first air cavity 23 is formed inside. A fresh air fan 231 is provided between the first fresh air shell 21 and the second fresh air shell 22, and a fresh air grille 221 is provided on the second fresh air shell 22. Driven by the fresh air fan 231, the fresh air enters the first air cavity 23 through the fresh air grille 221.

[0076] The first fresh air housing 21 is connected to the second fresh air housing 22 to form a fresh air guide port 24 .

[0077] The second fresh air shell 22 is connected to the third fresh air shell 25, and a second air cavity 26 is formed inside. The filter shell 271 is located between the second fresh air shell 22 and the third fresh air shell 25. A filter port 272 is formed between the second fresh air shell 22 and the third fresh air shell 25. The third fresh air shell 25 is provided with a filter track 273. The filter shell 271 is pushed into and pulled out of the second air cavity 26 from the filter port 272 via the filter track 273. The filter is located in the filter shell 271, and the filter can purify the outdoor fresh air entering the second air cavity 26.

[0078] The second fresh air housing 22 and the third fresh air housing 25 form a fresh air inlet 28, and the fresh air inlet 28 is connected to the outdoor air.

[0079] A first fresh air guide plate 291 is provided in the fresh air casing 20, one end of the first fresh air guide plate 291 is fixed at the air guide port 24, and the other end of the first fresh air guide plate 291 rotates around the fixed position of one end of the first fresh air guide plate 291; the place where the first fresh air guide plate 291 abuts against the upper inner wall of the fresh air casing 20 is the first position of the first fresh air guide plate 291, and the place where the first fresh air guide plate 291 abuts against the lower inner wall of the fresh air casing 20 is the second position of the first fresh air guide plate 291, and the first fresh air guide plate 291 rotates between the first position and the second position.

[0080] The first fresh air guide plate 291 and the upper side wall of the fresh air housing 20 form a first fresh air channel 232 , and the first fresh air guide plate 291 and the lower side wall of the fresh air housing 20 form a second fresh air channel 233 .

[0081] When the fresh air fan 231 is working, outdoor fresh air enters the fresh air housing 20 , and a part of the outdoor fresh air entering the fresh air housing 20 is discharged through the first fresh air channel 232 , and the other part is discharged through the second fresh air channel 233 .

[0082] The second fresh air guide plate 292 is disposed in the fresh air housing 20 . The second fresh air guide plate 292 is located at the air outlet of the fresh air housing 20 and at a side of the first fresh air guide plate 291 close to the fresh air fan 231 , so that the fresh air can be evenly discharged from the air outlet of the fresh air housing 20 .

[0083] In some embodiments of the present application, a through hole is provided on the second fresh air guide plate 292, and the fresh air exchanges airflow on both sides of the second fresh air guide plate 292. When the airflow enters the air outlet of the fresh air housing 20, the airflow entering the first fresh air channel 232 and the second fresh air channel 233 is uneven, resulting in the first fresh air guide plate 291 being unable to accurately adjust the amount of fresh air entering the first fresh air channel 232 and the second fresh air channel 233. Setting the second fresh air guide plate 292 near the fresh air fan 231 on the first fresh air guide plate 291 can balance the airflow direction, and the through holes provided on the second fresh air guide plate 292 can compensate for the airflow pressure on both sides of the second fresh air guide plate 292, so that the airflow enters the first fresh air channel 232 and the second fresh air channel 233 more evenly.

[0084] When the gap between the moving end of the first fresh air guide plate 291 and the second fresh air guide plate 292 is the smallest, the first fresh air guide plate 291 is located at the third position. When the first fresh air guide plate 291 is located at the third position, the wind resistance of the fresh air outlet is the smallest, and the air volumes of the fresh air from the first air guide port 241 and the second air guide port 242 are basically equal.

[0085] Driven by the fresh air fan 231, outdoor fresh air enters the second air chamber 26 through the indoor air inlet 12, and is purified by the filter. The purified outdoor fresh air enters the first air chamber 23 from the second air chamber 26 through the fresh air grille 221. The first fresh air shell 21 is connected to the second fresh air shell 22 to form a logarithmic spiral volute structure to ensure that each blade of the fresh air fan 231 in the first air chamber 23 can work on the fresh air, thereby increasing the fresh air flow rate and the fresh air airflow pressure. The outdoor fresh air enters the fresh air duct 30 and the fresh air guide part 40 through the fresh air guide port 24.

[0086] The fresh air duct 30 is connected to the fresh air casing 20 , and the fresh air duct 30 is connected to the fresh air casing 20 through the first air guide port 241 . The fresh air enters the fresh air duct 30 from the first fresh air channel 232 . The fresh air duct 30 is provided with a first fresh air outlet 35 , so that the fresh air enters the room from the first fresh air outlet 35 .

[0087] The fresh air guide part 40 is connected to the fresh air outer shell 20, and the fresh air guide part 40 is connected to the fresh air outer shell 20 through the second air guide port 242. The fresh air enters the fresh air guide part 40 from the second fresh air channel 233. The fresh air guide part 40 is provided with a second fresh air outlet 41, so that the fresh air enters the room from the second fresh air outlet 41.

[0088] The first fresh air outlet 35 is arranged at the indoor air outlet 50, and a first grille 52 is provided on the air outlet side of the first fresh air outlet 35, so that the fresh air can be evenly discharged from the indoor air outlet 50, and the fresh air discharged from the first fresh air outlet 35 is discharged into the room along the indoor air outlet; the first fresh air outlet 35 is arranged at the indoor air outlet 50, and a second grille 53 is provided on the air outlet side of the second fresh air outlet 41, so that the fresh air can be evenly discharged from the indoor air outlet, and the fresh air discharged from the second fresh air outlet is discharged into the room along the indoor air outlet.

[0089] The fresh air guide 29 enables the fresh air to be discharged from the first fresh air outlet 292, and the fresh air duct 29 enables the fresh air to be discharged from the second fresh air outlet 292. A first grille is provided on the outlet side of the first fresh air outlet, and a second grille is provided on the outlet side of the second fresh air outlet, which is conducive to uniform outlet of the fresh air; the first fresh air outlet and the second fresh air outlet are arranged at the indoor air outlet, and the fresh air is finally discharged at the indoor air outlet 50, and the fresh air and the air-conditioning outlet meet outside the indoor air outlet 50, which is conducive to mixing the fresh air and the air-conditioning outlet, and realizing the constant temperature outlet of the fresh air.

[0090] The motor 62 is arranged on the outside of the fresh air duct 30 and the fresh air guide part 40, and is fixed on the fresh air duct 30 and the fresh air guide part 40. A partition is provided between the fresh air duct 30 and the fresh air guide part 40. The fixed end of the first fresh air guide plate 291 is provided on the partition. The motor 62 rotates the first fresh air guide plate 291 through the rotating shaft of the fixed end of the first fresh air guide plate 291.

[0091] The fresh air duct 30 is composed of a first duct component 31 and a second duct component 32. The fresh air duct 30 is arranged along the length direction of the air conditioner indoor unit. The fresh air duct 30 is connected to the fresh air guide part 40. The first duct component 31 and the second duct component 32 are connected by a clamping part 33 to form a fresh air guide cavity inside the fresh air duct 30. The fresh air connecting cavity is connected to the fresh air guide cavity.

[0092] In some embodiments of the present application, the first clamping portion 33 includes a first hook portion 331 and a first slot portion 332, the first hook portion 331 is arranged on the first pipe assembly 31, the first slot portion 332 is arranged on the second pipe assembly 32, the first clamping portion 33 is arranged on the rear side of the fresh air duct, and several first clamping portions 33 are arranged in sequence at intervals on the rear side of the fresh air duct along the length direction of the fresh air duct 30.

[0093] In some embodiments of the present application, the second clamping portion 34 includes a second hook portion 341 and a second slot portion 342, the second hook portion 341 is arranged on the second pipe assembly 32, the second slot portion 342 is arranged on the first pipe assembly 32, the second clamping portion 33 is arranged on the front side of the fresh air duct, and several second clamping portions 33 are arranged in sequence on the rear side of the fresh air duct along the length direction of the fresh air duct 30.

[0094] The first clamping portion 33 and the second clamping portion 34 are respectively arranged on the rear side and the front side of the fresh air duct 30. The structural setting of the clamping portion makes the connection between the first duct assembly 31 and the second duct assembly 32 more firmly, ensures the airtightness of the fresh air duct 30, and reduces the loss of fresh air volume.

[0095] In some embodiments of the present application, the first duct assembly 31 is located on the upper side of the second duct assembly 32. The second duct assembly 32 is inclined from the front and rear sides to the middle of the fresh air duct 30 in the width direction of the air conditioner indoor unit.

[0096] When the temperature difference between indoor and outdoor is large, outdoor fresh air enters the fresh air duct 30, and condensation water is generated on the inner wall of the fresh air duct 30. The condensation water gathers at the bottom of the second pipe assembly 32 along the inner wall of the fresh air duct 30. The drain pipe 61 is connected to the fresh air duct 30, and the condensation water gathered at the bottom of the second pipe assembly 32 is discharged to the outside through the drain pipe 61.

[0097] A protrusion 36 is provided between the first fresh air outlet 35 and the fresh air duct 30, and an air outlet gap 37 is provided between the upper end of the protrusion 36 and the first duct assembly 31. The space between the air outlet gap 37 and the first fresh air outlet 35 is a fresh air outlet channel 38. The fresh air in the fresh air duct 30 enters the fresh air outlet channel 38 through the air outlet gap 37 and is then discharged from the first fresh air outlet 35. The protrusion 36 can block condensation water from entering the fresh air outlet channel 38 from the fresh air duct 30. When the fresh air duct 30 discharges air from the first fresh air outlet 35, the condensation water gathered in the fresh air duct 30 will not enter the fresh air outlet channel 38 and be sprayed out from the first fresh air outlet 35.

[0098] In some embodiments of the present application, the fresh air outlet channel 38 is composed of a bending portion 39 provided in the first pipe component 31, a protrusion 36 provided in the second pipe component 32 and a second fresh air outlet 35 provided in the second pipe component 32; the fresh air enters the fresh air outlet channel 38 from the air outlet gap 37, and the fresh air smoothly changes its wind direction through the bending portion 39. The smooth flow of the fresh air in the bending portion 39 can reduce the loss of fresh air.

[0099] The indoor air outlet 50 is located at the front bottom of the shell 10, and the indoor air outlet 50 includes a heat exchange outlet 51, a first fresh air outlet 35 and a second fresh air outlet 41; when the heat exchange function of the air conditioner indoor unit is turned on, the air flow enters from the indoor air inlet 12, exchanges heat with the indoor air in the heat exchange air duct 11, and is discharged from the heat exchange outlet 51; when the fresh air function is turned on, the fresh air is discharged through the first fresh air outlet 35 and the second fresh air outlet 41.

[0100] In some embodiments of the present application, the first fresh air outlet 35 is located on the upper side of the indoor air outlet 50 , and the second fresh air outlet 41 is located on the left or right side of the indoor air outlet 50 .

[0101] A first grille 52 is provided on the outlet side of the first fresh air outlet 35. The first grille 52 is located on the front side of the air-conditioning indoor unit and is arranged in the length direction of the shell 10. The upper side of the first grille 52 is connected to the shell 10, and the lower side of the first grille 52 is the heat exchange outlet 51. The first grille 52 is provided in front of the first fresh air outlet 51 and can cover the first fresh air outlet 35. The fresh air is evenly discharged from the first fresh air outlet 35 after passing through the first grille 52.

[0102] A fresh air guide 40 is provided at the front side of the second fresh air outlet 41. The fresh air guide 40 includes a receiving cavity 42, a second grille 43 and a barrier 44. The second grille 43 is provided at the second fresh air outlet 41. The fresh air passes through the second grille 53 and is discharged to the front side of the air conditioner indoor unit. The air duct formed by the fresh air housing 20 is a centrifugal air duct, and the air duct formed by the heat exchange air outlet 51 is a crossflow air duct. Each blade in the centrifugal air duct works on the air flow, and only one blade in the crossflow air duct works on the air flow. The barrier 44 is located at the heat exchange air outlet. The outlet 51 and the first fresh air outlet 35 are used to prevent the centrifugal wind from the first fresh air outlet 35 from flowing toward the heat exchange outlet 51. The air outlet of the first fresh air outlet 35 and the air outlet of the heat exchange outlet 51 meet outside the air-conditioning indoor unit, and the air outlet of the first fresh air outlet 35 and the air outlet of the heat exchange outlet 51 are mixed outside the air-conditioning indoor unit to achieve constant temperature air outlet of fresh air. At the same time, the high-pressure air blown out of the first fresh air outlet 35 can drive the low-pressure air blown out of the heat exchange outlet 51, so as to realize the long-distance air supply of the air-conditioning indoor unit and improve the heat exchange efficiency.

[0103] Outdoor fresh air enters the room to ventilate the indoor air, and the power for the outdoor fresh air to enter the room comes from the driving action of the fresh air fan 231.

[0104] Outdoor fresh air enters the second air cavity 26 of the fresh air casing 20 from the fresh air inlet 28, and the outdoor fresh air passes through the filter in the second air cavity 26 to be purified, and the outdoor fresh air enters the first air cavity 23 from the second air cavity 26 through the fresh air grille 221 on the second fresh air shell 22. The first air cavity 23 composed of the first fresh air shell 21 and the second fresh air shell 22 is a centrifugal air duct structure, and the fresh air fan 231 is arranged in the first air cavity 23. Under the diversion effect of the first fresh air guide plate 291 and the second fresh air guide plate 292, a part of the fresh air enters the fresh air duct 30 through the first fresh air channel 232, and the other part enters the fresh air guide part 40 through the second fresh air channel 233.

[0105] The fresh air entering the fresh air duct 30 is discharged from the first fresh air outlet 35, the first grille 52 is located at the outlet side of the first fresh air outlet 35, the first grille 52 is located at the indoor air outlet 50, the fresh air is discharged from the first fresh air outlet 35 through the first grille 52, the first grille 52 and the heat exchange outlet 51 are located at the indoor air outlet 50, so that the fresh air and the heat exchange are discharged together.

[0106] The fresh air entering the fresh air guide 40 is discharged from the second fresh air outlet 41, and the second grille 43 is located at the second fresh air outlet 41. The fresh air passes through the second fresh air outlet 41 and is discharged from the second grille 43. The second fresh air outlet 41 is located at the indoor air outlet 50, so that the fresh air and heat exchange are discharged together.

[0107] In some embodiments of the present application, a heat exchange air duct 11 is arranged inside the shell 10 along the length direction, an indoor air inlet 12 is opened at the top of the shell 10, and an indoor air outlet 50 is opened at the front bottom of the shell 10, and the heat exchange air duct 11 is connected with the indoor air inlet 12 and the indoor air outlet 50.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0109] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. An air conditioner indoor unit, characterized in that: include: A shell, wherein a heat exchange air duct is arranged inside the shell along the length direction; an indoor air inlet is opened at the top of the shell, an indoor air outlet is opened at the front bottom of the shell, and the heat exchange air duct is connected with the indoor air inlet and the indoor air outlet; An indoor heat exchanger, wherein the indoor heat exchanger is disposed in the heat exchange air duct, and the indoor heat exchanger performs heat exchange on the air passing through the indoor heat exchanger to form a heat exchange airflow; A heat exchange fan, the heat exchange fan is arranged in the heat exchange air duct, and the heat exchange fan is arranged below the indoor heat exchanger; the indoor air flow enters the shell through the indoor air inlet and is output from the indoor air outlet after being heat exchanged by the indoor heat exchanger; Fresh air housing; A fresh air fan is arranged in the fresh air housing; A first fresh air guide plate, wherein one end of the first fresh air guide plate is a fixed end and is provided with a fixed shaft, and the other end of the first fresh air guide plate is a movable end, and the movable end can be against the fresh air housing; When the mobile end abuts against the lower side of the fresh air housing, the fresh air in the fresh air housing is discharged only through the space between the first fresh air guide plate and the upper side of the fresh air housing; When the mobile end abuts against the upper side of the fresh air housing, the fresh air in the fresh air housing is discharged only through the space between the first fresh air guide plate and the lower side of the fresh air housing; When the mobile end moves in the fresh air housing, the first fresh air guide plate can control the amount of fresh air passing through the space between the first fresh air guide plate and the upper side of the fresh air housing, and the first fresh air guide plate can control the amount of fresh air passing through the space between the first fresh air guide plate and the lower side of the fresh air housing.

2. The air conditioner indoor unit according to claim 1, characterized in that: Also includes: The second fresh air guide plate is arranged in the fresh air housing. The second fresh air guide plate is located in the fresh air housing and is located on a side of the first fresh air guide plate close to the fresh air fan.

3. The air conditioner indoor unit according to claim 1, characterized in that: The fresh air passes through the space between the first fresh air guide plate and the upper side of the fresh air housing and passes through the first air guide port, and the fresh air passes through the space between the first fresh air guide plate and the lower side of the fresh air housing and passes through the second air guide port.

4. The air conditioner indoor unit according to claim 3, characterized in that: Also includes: A fresh air duct is connected to the fresh air casing and communicated with the first air guide port. The fresh air duct is provided with a first fresh air outlet. The fresh air duct is communicated with the fresh air casing through the first air guide port. Fresh air enters the fresh air duct from the space between the first fresh air guide plate and the upper side of the fresh air casing and is discharged from the first fresh air outlet.

5. The air conditioner indoor unit according to claim 3, characterized in that: Also includes: A fresh air guide portion, which is connected to the fresh air shell and communicated with the second air guide port, and the fresh air guide portion is provided with a second fresh air outlet. The fresh air guide portion is communicated with the fresh air shell through the second air guide port, and fresh air enters the fresh air guide portion from the space between the first fresh air guide plate and the lower side of the fresh air shell and is discharged from the second fresh air outlet.

6. The air conditioner indoor unit according to claim 4, characterized in that: The first fresh air outlet is arranged at the indoor air outlet, and the fresh air discharged from the first fresh air outlet is discharged into the room along the indoor air outlet.

7. The air conditioner indoor unit according to claim 5, characterized in that: The second fresh air outlet is arranged at the indoor air outlet, and the fresh air discharged from the second fresh air outlet is discharged into the room along the indoor air outlet.

8. The air conditioner indoor unit according to claim 2, characterized in that: The second fresh air guide plate is provided with through holes, so that the fresh air can pass through the second fresh air guide plate to exchange airflow in the spaces on both sides of the second fresh air guide plate.

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