Indoor unit of air conditioner

Abstract

The utility model discloses an air conditioner indoor unit, and belongs to the technical field of air conditioners. The air conditioner indoor unit comprises a shell, an air inlet, an air outlet, an air inlet and an air outlet, the fan is arranged in the shell and used for driving air to flow from the air return port to the air outlet; the purification module is connected to the shell corresponding to the air return opening or the air outlet, and the purification module comprises a support, a first air inlet and a second air outlet; the photocatalyst filter screen is connected to the bracket; the lamp holder is connected to the inner side of the photocatalyst filter screen, and a plurality of lamp beads which are arranged at intervals are arranged on the lamp holder and used for emitting light outwards; the distance A between every two adjacent lamp beads is not larger than 60 mm, and the distance B between the lamp holder and the photocatalyst filter screen is not smaller than 10 mm. The indoor unit of the air conditioner can purify pollutants such as formaldehyde, bacteria and viruses in indoor air.

Description

Technical Field

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

[0002] At present, in the field of air conditioning, air purification technologies mainly include physical filtration, ion purification, adsorption decomposition, electrostatic dust collection, UVC sterilization, etc. Among them, ion purification technology has a purification effect on particulate matter, bacteria and viruses, etc., and is widely used in central air conditioners, but ion purification technology has almost no purification effect on formaldehyde. Utility Model Content

[0003] The present application provides an air-conditioning indoor unit, which can purify pollutants such as formaldehyde, bacteria and viruses in indoor air.

[0004] In one aspect of the present application, an air-conditioning indoor unit comprises: a shell having a return air port and an air outlet thereon; a fan disposed in the shell for driving air to flow from the return air port to the air outlet; a purification module connected to the shell corresponding to the return air port or the air outlet, the purification module comprising: a bracket; a photocatalyst filter connected to the bracket; a lamp holder connected to the inner side of the photocatalyst filter, a plurality of lamp beads arranged at intervals on the lamp holder for emitting light outward; a distance A between two adjacent lamp beads is not greater than 60 mm, and a distance B from the lamp holder to the photocatalyst filter is not less than 10 mm.

[0005] On the other hand of the present application, an air conditioner indoor unit includes: a purification module, which is connected to the shell corresponding to the return air outlet or the air outlet, and the purification module includes: a bracket; a photocatalyst filter, which is connected to the bracket; a lamp holder, which is connected to the inner side of the photocatalyst filter, and the lamp holder is provided with a plurality of lamp beads arranged at intervals, which are used to emit light outward; the distance A between two adjacent lamp beads is 20 to 60 mm, and the distance B from the lamp holder to the photocatalyst filter is 10 to 20 mm.

[0006] In some embodiments, the distance between the lamp bead and the fan is not less than 35 mm.

[0007] In some embodiments, the purification module is installed on the outside of the return air port or the air outlet, and the thickness of the purification module is no more than 40 mm.

[0008] In some embodiments, a protruding first guide rail portion and a second guide rail portion are provided on the inner wall of the bracket, and a guide groove is formed by the interval between the first guide rail portion and the second guide rail portion; the photocatalyst filter is slidably connected in the guide groove.

[0009] In some embodiments, a through opening is provided on the side wall of the bracket, and the photocatalyst filter can be inserted into the guide groove through the opening;

[0010] The purification module also includes:

[0011] The limiting piece is detachably or movably connected to the opening portion and is used to limit the photocatalyst filter from escaping from the opening portion.

[0012] In some embodiments, the purification module is connected to the outside of the shell, and the first guide rail portion is located on the side of the second guide rail portion away from the shell; a notch portion is provided on the first guide rail portion; there are multiple photocatalyst filters, and the photocatalyst filters can be inserted into the bracket from the notch portion; the purification module also includes: a limit frame, which is detachably connected to the notch portion to limit the photocatalyst filter from escaping from the notch portion.

[0013] In some embodiments, the bracket includes a first wall and a second wall opposite to each other, the first wall is provided with a first slot and a first mounting ear; the second wall is provided with a second slot and a second mounting ear;

[0014] One end of the limiting frame is inserted into the first slot, and the other end of the limiting frame is connected to the second mounting ear; or one end of the limiting frame is inserted into the second slot, and the other end of the limiting frame is connected to the first mounting ear.

[0015] In some embodiments, the limiting frame is in a "human" shape.

[0016] In some embodiments, the light bracket is in a grid shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 shows a perspective view of an indoor unit of an air conditioner according to some embodiments;

[0018] Figure 2 shows a perspective view of an air conditioner indoor unit according to other embodiments;

[0019] Figure 3 shows an exploded view of an indoor unit of an air conditioner according to some embodiments;

[0020] Figure 4 shows a cross-sectional view of an indoor unit of an air conditioner according to some embodiments;

[0021] Figure 5 An exploded view of a purification module of an air conditioner indoor unit according to some embodiments is shown;

[0022] Figure 6 shows a perspective view of a support in a purification module according to some embodiments;

[0023] Figure 7 shows a perspective view of a lamp holder in a purification module according to some embodiments;

[0024] Figure 8 A schematic diagram showing a lamp holder and a photocatalyst filter in a purification module according to some embodiments is shown;

[0025] Fig. 9A side view of disassembling and assembling a photocatalyst filter in a purification module according to some embodiments is shown;

[0026] Fig.10 shows an exploded view of a purification module according to some embodiments;

[0027] In the above figures, 10, shell; 11, return air outlet; 12, air outlet; 14, bottom plate; 15, top plate; 16, front side plate; 17, middle partition plate; 18, first chamber; 19, second chamber; 20, fan; 21, volute; 210, outlet; 22, fan; 30, heat exchanger; 31, water tray; 40, purification module; 41, bracket; 411, first wall; 412, second wall; 413, third wall; 414, fourth wall ; 415, first guide rail portion; 416, second guide rail portion; 417, opening portion; 418, notch portion; 4191, first slot; 4192, second slot; 4193, first mounting ear; 4194, second mounting ear; 42, photocatalyst filter; 43, lamp holder; 431, lamp board; 432, lamp beads; 433, through-hole; 434, vertical bar; 435, horizontal bar; 44, support plate; 45, limit plate; 46, limit frame. DETAILED DESCRIPTION

[0028] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0029] 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 referred device or element 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.

[0030] The terms "first", "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. Therefore, 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.

[0031] 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 an indirect connection 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.

[0032] The air conditioner in this application 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, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

[0033] The compressor compresses the refrigerant gas in a low temperature and low pressure state 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.

[0034] 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 refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration 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.

[0035] 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.

[0036] 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.

[0037] Reference Figures 1 to 3 According to an embodiment of the present application, the air conditioner indoor unit includes a housing 10 .

[0038] The housing 10 is substantially in a rectangular parallelepiped shape, forming the appearance of the indoor unit of the air conditioner. For example, the housing 10 can be formed by welding or threading a plurality of sheet metals.

[0039] An air return port 11 and an air outlet 12 are formed on the housing 10 . Air can enter the housing 10 through the air return port 11 and be blown out through the air outlet 12 .

[0040] The housing 10 includes a bottom plate 14, a top plate 15 and a front side plate 16. The top plate 15 forms a top structure of the air conditioner indoor unit, the bottom plate 14 and the top plate 15 are opposite to each other up and down, and the front side plate 16 is provided with an air outlet 12.

[0041] The return air port 11 is disposed at the rear end of the housing 10 ; or, the return air port 11 is disposed at a rear position of the bottom end of the housing 10 .

[0042] According to the embodiments of the present application, referring to Figure 4 The air conditioner indoor unit also has a middle partition 17, which is vertically connected to the shell 10 and divides the space in the shell 10 into a first cavity 18 and a second cavity 19. The first cavity 18 is located at the rear side and the second cavity 19 is located at the front side.

[0043] The return air port 11 is located at the side of the first cavity 18 and is connected to the first cavity 18 , and the air outlet 12 is located at the side of the second cavity 19 and is connected to the second cavity 19 .

[0044] The indoor unit of the air conditioner includes a fan 20 . The fan 20 is disposed in the first cavity 18 of the housing 10 and is used to force air to flow so that the air flows from the return air port 11 to the outlet air port 12 .

[0045] The fan 20 includes a volute 21 and a fan 22. The rotation of the fan 22 can be used as a power source for air flow, and the volute 21 is covered outside the fan 22.

[0046] Air suction ports are formed on the left and right sides of the volute 21 , and an outlet 210 is formed at the front end of the volute 21 . The outlet end of the volute 21 passes through the middle partition 17 so that the outlet 210 is connected to the second chamber 19 .

[0047] The indoor unit of the air conditioner includes a heat exchanger 30. The heat exchanger 30 is disposed in the housing 10 and is disposed on the air movement path from the outlet 210 of the fan 20 to the air outlet 12. The heat exchanger 30 is used to absorb heat from the air introduced into the housing 10 or transfer heat to the air. A water receiving tray 31 is disposed below the heat exchanger 30 to collect moisture condensed in the heat exchanger 30.

[0048] Specifically, the heat exchanger 30 is disposed in the second chamber 19 corresponding to the air outlet 12 .

[0049] The air conditioner indoor unit of this structural form is mostly used in the scene of ceiling installation. In one installation scene, the return air outlet 11 of the air conditioner indoor unit is opposite to the grille plate on the wall, and the air outlet 12 of the air conditioner indoor unit is connected to the room through the air duct.

[0050] When the indoor unit of the air conditioner is running, driven by the fan 22, air enters the first chamber 18 of the shell 10 from the return air port 11, then flows into the second chamber 19 through the air intake and outlet 210 of the volute 21 to exchange heat with the heat exchanger 30, and finally blows out from the air outlet 12.

[0051] The indoor unit of the air conditioner includes a purification module 40 for filtering air. The purification module 40 can be installed at the return air port 11 or at the air outlet 12.

[0052] Since the return air outlet 11 is usually directly opposite to the grille plate on the wall without any other connection structure, the present application installs the purification module 40 at the return air outlet 11, which is more convenient than installing it at the air outlet 12.

[0053] The following is an example of installing the purification module 40 at the return air outlet 11:

[0054] Reference Figure 5 and Figure 6 The purification module 40 includes a bracket 41. The bracket 41 may be in a rectangular frame shape, including a first wall 411 and a second wall 412 that are oppositely disposed, and a third wall 413 and a fourth wall 414 that are connected between the first wall 411 and the second wall 412.

[0055] The first wall 411 and the second wall 412 are opposite to each other up and down, and the first wall 411 may be located above the second wall 412; the third wall 413 and the fourth wall 414 are opposite to each other left and right.

[0056] The purification module 40 includes a photocatalyst filter 42. The photocatalyst filter 42 is made of an aluminum honeycomb mesh or other metal mesh, which carries a certain amount of photocatalyst.

[0057] Under ultraviolet light, the valence band electrons of the photocatalyst are excited to jump to the conduction band, forming electron-hole pairs. The electrons have strong reducing properties and the holes have strong oxidizing properties. They react with O2 and H2O adsorbed on the surface to generate superoxide anion radicals and hydroxyl radicals, decomposing organic matter into water and carbon dioxide. At the same time, they can destroy the cell membrane of bacteria and solidify the protein of viruses, thereby killing bacteria and viruses, achieving the air purification function of sterilization and removal of harmful gases such as formaldehyde.

[0058] Reference Figure 5 and Figure 7 The purification module 40 includes a lamp holder 43. The lamp holder 43 includes a lamp board 431 and LED lamp beads 432.

[0059] The lamp board 43 may be in the shape of a thin sheet, and the lamp board 43 is connected to the bracket 41 to realize the connection of the lamp bracket 43 on the bracket 41 .

[0060] The lamp beads 432 are connected to the lamp board 43, and the lamp beads 432 can emit ultraviolet light when powered on.

[0061] The lamp beads 432 face the photocatalyst filter 42 , and the photocatalyst filter 42 sterilizes and disinfects the air passing through it under the ultraviolet light of the lamp beads 432 to remove harmful gases.

[0062] In some embodiments, the lamp holder 43 is connected to the inner side of the photocatalyst filter 42. Thus, the lamp beads 432 emit light outward, which can prevent ultraviolet light from irradiating the interior of the housing 10 and accelerating the aging of other components.

[0063] Reference Figure 4 When the return air port 11 is located at the rear end of the housing 10 , the lamp holder 43 is located in front of the photocatalyst filter 42 , and the lamp beads 432 are disposed at the rear end of the lamp holder 43 .

[0064] When the air return port 11 is located at the bottom of the housing 10 , the lamp holder 43 is located on the upper side of the photocatalyst filter 42 , and the lamp beads 432 are disposed at the lower end of the lamp holder 43 .

[0065] When the purification module 40 is installed at the air outlet 12 , the lamp holder 43 is located at the rear side of the photocatalyst filter 42 , and the lamp beads 432 are disposed at the rear end of the lamp holder 43 .

[0066] In some embodiments, a plurality of lamp beads 432 are arranged at certain intervals on the lamp board 431. Exemplarily, a plurality of lamp beads 432 are evenly arranged in the horizontal and vertical directions.

[0067] Reference Figure 8 , the distance A between two adjacent lamp beads 432 is not greater than 60mm. Since the light of the lamp beads 432 is emitted outward at an expanded angle, if the spacing A between the lamp beads 432 is greater than 60mm, that is, the arrangement of the lamp beads 432 is relatively sparse, and the number of the lamp beads 432 is relatively small, then the photocatalyst filter 42 needs to be farther away from the lamp beads 432, that is, B is larger, in order to ensure that the photocatalyst filter 42 is fully illuminated; however, when the photocatalyst filter 42 is farther away from the lamp beads 432, the thickness of the purification module 40 will be relatively large, which will make the front and rear dimensions of the air conditioner indoor unit larger, bringing about the problem of limited installation space. Therefore, in the present application, the spacing A between adjacent lamp beads 432 is set to be no more than 60mm, which can prevent the purification module 40 from being too thick.

[0068] The distance A between two adjacent lamp beads 432 is not less than 20 mm. If the distance A between the lamp beads 432 is less than 20 mm, the arrangement of the lamp beads 432 is relatively close, the number of the lamp beads 432 is relatively large, and the cost is increased. In addition, if the lamp beads 432 are relatively dense, the lamp board 431 needs to have more entities to install the lamp beads 432, and the area available for ventilation on the lamp board 431 is relatively small, which increases air resistance and affects the air volume of the air conditioner indoor unit.

[0069] The distance B from the lamp board 431 to the photocatalyst filter 42 is not less than 10 mm. Since there is an illumination blind spot in the area close to the lamp beads 432, if the photocatalyst filter 42 is close to the lamp beads 432, that is, B is less than 10 mm, then the lamp beads 432 need to be arranged more densely to ensure that all of the photocatalyst filter 42 is illuminated. Therefore, in this application, setting B to be not less than 10 mm can avoid the problem of needing more lamp beads 432.

[0070] The distance B between the lamp board 431 and the photocatalyst filter 42 is not greater than 20 mm. If B is greater than 20 mm, the purification module 40 will be thicker.

[0071] In the embodiment provided in the present application, the distance A between two adjacent lamp beads 432 is 20-60 mm, and the distance B from the lamp holder 43 to the photocatalyst filter 42 is 10-20 mm, thus achieving the maximum purification efficiency while ensuring that the purification module 40 has a compact structure.

[0072] According to the embodiment of the present application, the size of the purification module 40 is determined according to the size of the return air port 11. The size of the purification module 40 in the up-down and left-right directions will not exceed the size of the housing 10.

[0073] Continue to refer to Figure 4 The thickness of the purification module 40 cannot be too large, otherwise it will affect the feasibility of the ceiling installation. In order to reduce the impact of the purification module 40 on the ceiling size and adapt to the current common ceiling thickness, the thickness L1 of the purification module 40 is not greater than 40 mm.

[0074] Under the conditions that the distance A between two adjacent lamp beads 432 is 20-60 mm and the distance B from the lamp holder 43 to the photocatalyst filter 42 is 10-20 mm, it can be ensured that the thickness of the purification module 40 does not exceed 40 mm.

[0075] In some embodiments, the ultraviolet light emitted by the lamp bead 432 is reflected into the interior of the housing 10, which will accelerate the aging of the machine body components, especially the plastic parts such as the volute 21 and the fan 22.

[0076] Therefore, in the embodiment provided in the present application, the distance L2 between the lamp bead 432 and the fan 20 is set to be no less than 35 mm, which can reduce or even prevent the fan 20 from being affected by ultraviolet light.

[0077] In some embodiments, the purification module 40 can be installed on the outside of the housing 10. A flange is provided at the front end of the bracket 41, and the flange abuts against the housing 10 and is connected by screws.

[0078] Continue to refer to Figures 5 to 7The two ends of the bracket 41 that are connected, that is, the two ends through which air flows, are respectively a first through end and a second through end. The first through end is connected to a support sheet 44.

[0079] The support sheet 44 is strip-shaped, and two ends of the support sheet 44 in the length direction can be connected to the first wall 411 and the second wall 412 of the bracket 41 respectively by screws.

[0080] The lamp holder 43 abuts against the supporting sheet 44 , and the lamp plate 431 of the lamp holder 43 and the supporting sheet 44 can be connected by screws to realize the connection of the lamp holder 43 on the bracket 41 .

[0081] A plurality of support sheets 44 may be arranged at intervals along the left-right direction, so that the plurality of support sheets 44 support the lamp holder 43 , thereby increasing the structural strength of the lamp holder 43 and preventing the lamp holder 43 from being deformed due to the impact of air flow for a long time.

[0082] Both transverse ends of the support sheet 44 are provided with flanges to increase the structural strength of the support sheet 44 .

[0083] Specifically, there are three or more support pieces 44, two of which are located on the left and right sides of the first through-end, and the remaining support pieces 44 are arranged at intervals in the middle of the first through-end. For example, in the figure, there are four support pieces 44, two of which are located in the middle of the first through-end.

[0084] In some embodiments, reference Figure 7 The lamp plate 431 of the lamp holder 43 is in the shape of a thin sheet, which can reduce the thickness space occupied by the lamp holder 43. The lamp plate 431 is provided with a plurality of through holes 433 for ventilation.

[0085] The light board 431 may include a plurality of vertical bars 434 arranged at intervals, the vertical bars 434 corresponding to the support sheet 44 , and the light board 431 and the support sheet 44 are connected by screws penetrating the vertical bars 434 and the support sheet 44 .

[0086] The vertical bars 434 are connected with horizontal bars 435, and the lamp beads 432 can be installed on the horizontal bars 435. The horizontal bars 435 and the vertical bars 434 together form a through opening 433.

[0087] In some embodiments, reference Figure 6 and Fig. 9 A first guide rail portion 415 and a second guide rail portion 416 are protruded on the inner wall of the bracket 41 , and a guide groove is formed between the first guide rail portion 415 and the second guide rail portion 416 ; the photocatalyst filter 42 is slidably connected in the guide groove.

[0088] A first rail portion 415 is disposed at the front end of the first wall 411 and the second wall 412 of the bracket 41 , and a second rail portion 416 is disposed at the rear end of the first wall 411 and the second wall 412 of the bracket 41 . The photocatalyst filter 42 is limited between the first rail portion 415 and the second rail portion 416 .

[0089] Specifically, the bracket 41 is made of sheet metal, and the first guide rail portion 415 is formed by bending the front edge of the bracket 41 . The second guide rail portion 416 is formed by bending the rear edge of the bracket 41 .

[0090] The third wall 413 and / or the fourth wall 414 of the bracket 41 is provided with a through opening 417 . The photocatalyst filter 42 can be inserted into the guide groove through the opening 417 .

[0091] In some embodiments, the purification module 40 further includes a stopper 45 . The stopper 45 is detachably connected to the opening 417 to prevent the photocatalyst filter 42 from escaping from the opening 417 .

[0092] One end of the limiting piece 45 can be screwed to the outside of the third wall 413. When the limiting piece 45 corresponds to the outside of the opening 417, it is in a limiting state and can limit the photocatalyst filter 42; when the limiting piece 45 is not opposite to the opening 417, the opening 417 is fully opened.

[0093] During disassembly, the screws can be loosened, and then the position of the limiting piece 45 can be adjusted to install or remove the photocatalyst filter 42 from the opening 417. When the photocatalyst filter 42 is installed in place, the screws are tightened to keep the limiting piece 45 in the limited state.

[0094] Alternatively, during disassembly and assembly, the limiting piece 45 is first removed, and after the photocatalyst filter 42 is installed in place, the limiting piece 45 is installed in the limited position by screws.

[0095] The limiting piece 45 is located at the connection between the fourth wall 414 and the third wall 413 , which will not be described in detail here.

[0096] In some embodiments, reference Figure 6 and Fig.10 The photocatalyst filter 42 has a plurality of parts, and a notch 418 is provided on the first rail part 415 , and the photocatalyst filter 42 can be installed on the bracket 41 through the notch 418 . That is, the photocatalyst filter 42 can be installed from the rear side of the bracket 41 .

[0097] The purification module 40 may include a limiting frame 46 , which is connected to the bracket 41 corresponding to the notch 418 , and is used to limit the photocatalyst filter 42 and prevent the photocatalyst filter 42 from escaping from the notch 418 .

[0098] Exemplarily, the photocatalyst filter 42 has three, and the length of the notch 418 is not less than the length of a single photocatalyst filter 42. The notch 418 can be located in the middle, that is, the left and right sides of the notch 418 are both the first guide rail portion 415. During installation, one of the photocatalyst filters 42 is first inserted into the bracket 41 from the notch 418, and then moved to the left or right side into the guide groove, and then the second photocatalyst filter 42 is inserted from the notch 418 and moved to the guide groove on the other side; then the third photocatalyst filter 42 is inserted from the notch 418, and finally the limit frame 46 is installed at the notch 418; during disassembly, the limit frame 46 is first disassembled, and then the photocatalyst filter 42 is taken out. The disassembly and assembly of the photocatalyst filter 42 from the front side is realized, which facilitates the cleaning and maintenance operations of the photocatalyst filter 42.

[0099] Exemplarily, the photocatalyst filter 42 has two, and the length of the notch 418 is not less than the length of a single photocatalyst filter 42. During installation, one of the photocatalyst filters 42 is first inserted into the bracket 41 from the notch 418, then moved left and right into the guide groove, and then the other photocatalyst filter 42 is inserted into the bracket 41 from the notch 418.

[0100] In some embodiments, a first slot 4191 is provided on the first wall 411 of the bracket 41, and a second mounting ear 4194 is provided on the second wall 412 of the bracket 41. One end of the limit frame 46 is inserted into the first slot 4191, and the other end of the limit frame 46 is connected to the second mounting ear 4194 by screws to achieve the connection of the limit frame 46 on the bracket 41.

[0101] In other embodiments, the first wall 411 of the bracket 41 is provided with a first mounting ear 4193, and the second wall 412 of the bracket 41 is provided with a second slot 4192. One end of the limit frame 46 is inserted into the second slot 4192, and the other end of the limit frame 46 is connected to the second mounting ear 4194 by screws.

[0102] In the embodiment provided in the present application, since a first slot 4191 and a first mounting ear 4193 are provided on the first wall 411 of the bracket 41, and a second slot 4192 and a second mounting ear 4194 are provided on the second wall 412 of the bracket 41, the up and down installation directions of the limit frame 46 are not restricted, thereby improving the convenience of installation of the limit frame 46.

[0103] In some embodiments, the limiting frame 46 may be in a "human" shape, with two legs inserted into slots and the remaining end connected to the mounting ear, which can save the use of screws and improve assembly efficiency.

[0104] In addition, the "human"-shaped structure can ensure the stability and reliability of the limiting frame 46 in limiting the photocatalyst filter 42. At the same time, the area of ​​the limiting frame 46 is as small as possible to reduce the obstruction of air.

[0105] In some embodiments, different from the above embodiments, there is no first rail portion 415 in this embodiment, and the photocatalyst filter 42 is directly installed into the bracket 41 from the front side of the bracket 41. In this case, a limiting frame 46 with a larger area 46 is required to limit the photocatalyst filter 42. Therefore, the air blocking of the limiting frame 46 in this embodiment is greater than that of the embodiment with a rail portion.

[0106] In the present application, by installing a photocatalyst purification module at the return air inlet 11 or the air outlet 12 of the air conditioner indoor unit, the lamp beads 432 in the purification module 40 irradiate ultraviolet light to the photocatalyst filter 42, which can purify pollutants such as formaldehyde, bacteria and viruses in the air, and has the advantage of good purification effect.

[0107] In the present application, by setting the lamp board 431 inside the photocatalyst filter 42, the lamp beads 432 on the lamp board 431 emit light to the photocatalyst filter 42 outside, which can reduce or even avoid the influence of ultraviolet light on other components inside the housing 10.

[0108] In the present application, the distance A between adjacent lamp beads 432 is no greater than 60 mm, which can prevent the purification module 40 from being too thick.

[0109] In the present application, the distance A between two adjacent lamp beads 432 is not less than 20 mm, which can avoid the problem of increased cost due to more lamp beads 432 and increased ventilation resistance due to a larger physical area of ​​the lamp board 431.

[0110] In the present application, the distance B between the lamp board 431 and the photocatalyst filter 42 is not less than 10 mm, which can avoid the problem of requiring more lamp beads 432 to ensure the purification effect.

[0111] In the present application, the distance B between the lamp board 431 and the photocatalyst filter 42 is no greater than 20 mm, which can prevent the purification module 40 from being too thick.

[0112] In the present application, the distance A between two adjacent lamp beads 432 is 20-60 mm, and the distance B from the lamp holder 43 to the photocatalyst filter 42 is 10-20 mm, thus achieving the maximum purification efficiency while ensuring that the purification module 40 has a compact structure.

[0113] In the present application, the distance L2 between the lamp bead 432 and the fan 20 is set to be no less than 35 mm, which can reduce or even prevent the fan 20 from being affected by ultraviolet light.

[0114] In the present application, a plurality of photocatalyst filters 42 are provided, some of which are limited by the guide rail, and other photocatalyst filters 42 are limited by the limiting frame 46. The filter can be disassembled and assembled from the rear side from the limiting frame 46. At the same time, the ventilation area occupied by the limiting frame 46 is relatively small, which can reduce the influence of the limiting frame 46 on ventilation.

[0115] 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.

[0116] 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 body, on which an air return port and an air outlet are provided; A fan, disposed in the housing, for driving air to flow from the return air port to the air outlet; A purification module is connected to the housing corresponding to the return air port or the air outlet, and the purification module includes: Bracket; A photocatalyst filter is connected to the bracket; A lamp holder is connected to the inner side of the photocatalyst filter, and a plurality of lamp beads arranged at intervals are arranged on the lamp holder for emitting light outward; the distance A between two adjacent lamp beads is 20 to 60 mm, and the distance B from the lamp holder to the photocatalyst filter is 10 to 20 mm.

2. The air conditioner indoor unit according to claim 1, characterized in that: The distance between the lamp bead and the fan is not less than 35 mm.

3. The air conditioner indoor unit according to claim 1, characterized in that: The purification module is installed on the outer side of the return air port or the air outlet, and the thickness of the purification module is not more than 40 mm.

4. The air conditioner indoor unit according to claim 1, characterized in that: The inner wall of the bracket is provided with a protruding first guide rail portion and a second guide rail portion, and the interval between the first guide rail portion and the second guide rail portion forms a guide groove; the photocatalyst filter screen is slidably connected in the guide groove.

5. The air conditioner indoor unit according to claim 4, characterized in that: The side wall of the bracket is provided with a through opening, and the photocatalyst filter can be inserted into the guide groove through the opening; The purification module also includes: The limiting piece is detachably or movably connected to the opening portion and is used to limit the photocatalyst filter from escaping from the opening portion.

6. The air conditioner indoor unit according to claim 4, characterized in that: The purification module is connected to the outer side of the shell, and the first rail portion is located on the side of the second rail portion away from the shell; a notch portion is provided on the first rail portion; there are a plurality of photocatalyst filters, and the photocatalyst filters can be plugged into the bracket through the notch portion; The purification module also includes: The limiting frame is detachably connected to the notch portion to limit the photocatalyst filter from escaping from the notch portion.

7. The air conditioner indoor unit according to claim 6, characterized in that: The bracket comprises a first wall and a second wall opposite to each other, the first wall is provided with a first slot and a first mounting ear; the second wall is provided with a second slot and a second mounting ear; One end of the limiting frame is inserted into the first slot, and the other end of the limiting frame is connected to the second mounting ear; or one end of the limiting frame is inserted into the second slot, and the other end of the limiting frame is connected to the first mounting ear.

8. The air conditioner indoor unit according to claim 6, characterized in that: The limiting frame is in the shape of a "human".

9. The air conditioner indoor unit according to claim 1, characterized in that: The lamp frame is in a grid shape.

10. An air conditioner indoor unit, characterized in that: include: A shell body, on which an air return port and an air outlet are provided; A fan, disposed in the housing, for driving air to flow from the return air port to the air outlet; A purification module is connected to the housing corresponding to the return air port or the air outlet, and the purification module includes: Bracket; A photocatalyst filter is connected to the bracket; A lamp holder is connected to the inner side of the photocatalyst filter, and a plurality of lamp beads arranged at intervals are arranged on the lamp holder for emitting light outward; a distance A between two adjacent lamp beads is not greater than 60 mm, and a distance B from the lamp holder to the photocatalyst filter is not less than 10 mm.

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