Indoor unit of air conditioner

Abstract

The utility model discloses an air conditioner indoor unit which comprises a shell provided with an air return opening and an air outlet. The heat exchanger is arranged between the air return port and the air outlet, and the heat exchanger is configured to perform heat exchange on flowing airflow to form heat exchange airflow; a water outlet is formed in one end of the water pan, and the water pan is arranged in the shell and located below the heat exchanger; the fan assembly comprises a motor and a fan blade; a volute; the fan is arranged on a rotating shaft of the motor and located in the volute; the fan assembly is located in the shell and arranged on the windward side of the heat exchanger. The water pan is further provided with a first water retaining part and a second water retaining part, the first water retaining part and the second water retaining part are located on the leeward side of the heat exchanger, the first water retaining part is of a concave structure, the second water retaining part is of a convex structure, and the first water retaining part is located between the heat exchanger and the second water retaining part. The water blowing phenomenon is reduced; and the air outlet efficiency is ensured.

Description

Technical Field

[0001] The present application relates to an air conditioner, and in particular to an air conditioner indoor unit. Background Art

[0002] Air conditioners are commonly used in daily life. They are divided into wall-mounted air conditioners and cabinet air conditioners. Among them, air conditioners usually include indoor and outdoor units. The indoor unit is installed indoors, while the outdoor unit is installed outdoors.

[0003] Ducted air conditioners are widely used because they can be built into indoor ceilings. Ducted air conditioners generally include a housing, and components such as a fan, heat exchanger, water tray, and drain pump located within the housing. During use, after the fan is started, airflow toward the heat exchanger can cause water in the water tray at the bottom of the heat exchanger to blow away. To this end, Chinese Patent Publication No. CN106016670A discloses an anti-blowout water tray assembly and an air conditioning system having the same. This prevents water from blowing away from the water tray due to airflow by providing a water retaining structure at the outlet side of the heat exchanger.

[0004] However, in actual use, an excessively high water retaining structure will affect the airflow output from the air outlet and thus affect the air outlet efficiency. In view of this, how to design a technology to reduce the water blowing phenomenon and ensure the air outlet efficiency is the technical problem to be solved by this application. Utility Model Content

[0005] In response to the problems pointed out in the background technology, the present application proposes an air conditioner indoor unit to reduce the water blowing phenomenon and ensure the air outlet efficiency.

[0006] To achieve the above application objectives, this application adopts the following technical solutions:

[0007] In some embodiments of the present application, an air conditioner indoor unit is provided, comprising:

[0008] A housing, wherein the housing is provided with an air return port and an air outlet;

[0009] a heat exchanger, the heat exchanger being arranged between the return air port and the air outlet, the heat exchanger being configured to exchange heat with the air flow passing therethrough to form a heat exchange air flow;

[0010] a fan assembly, the fan assembly being located in the housing and arranged on a windward side of the heat exchanger;

[0011] a water receiving tray, one end of which is provided with a drain port, the water receiving tray being arranged in the housing and being located below the heat exchanger;

[0012] In which, the water receiving tray is also provided with a first water retaining part and a second water retaining part, the first water retaining part and the second water retaining part are located on the leeward side of the heat exchanger, the first water retaining part is a concave structure, and the second water retaining part is a convex structure, and the first water retaining part is located between the heat exchanger and the second water retaining part.

[0013] In another embodiment of the present application, an air conditioner indoor unit is provided, comprising:

[0014] The housing is provided with an air return port and an air outlet

[0015] a heat exchanger, the heat exchanger being arranged between the return air port and the air outlet, the heat exchanger being configured to exchange heat with the air flow passing therethrough to form a heat exchange air flow;

[0016] a fan assembly, the fan assembly being located in the housing and arranged on a windward side of the heat exchanger;

[0017] a water receiving tray, one end of which is provided with a drain port, the water receiving tray being arranged in the housing and being located below the heat exchanger;

[0018] Wherein, the water receiving tray is further provided with a first water retaining portion and a second water retaining portion, wherein the first water retaining portion and the second water retaining portion are located on the leeward side of the heat exchanger;

[0019] The first water retaining portion is configured to buffer the water in the water receiving tray blown by the airflow; and the second water retaining portion is configured to block the flow of the water in the water receiving tray blown by the airflow.

[0020] In one embodiment of the present application, the first water retaining portion and the second water retaining portion are extended and arranged on the water receiving tray along the length direction of the heat exchanger, and the first water retaining portion is also connected to the drain outlet.

[0021] The above technical solution has the following advantages or beneficial effects: the first water retaining portion and the second water retaining portion can perform water retaining treatment on the condensed water flowing down from various parts of the heat exchanger in the water receiving tray to improve the water retaining effect.

[0022] In one embodiment of the present application, a mounting groove is further provided on the water receiving tray, and the lower portion of the heat exchanger is provided in the mounting groove.

[0023] The above technical solution has the following advantages or beneficial effects: by setting an installation groove in the water receiving tray, on the one hand, it can play a role in fixing the installation of the heat exchanger, and on the other hand, it can also play a role in storing and guiding the condensed water generated by the heat exchanger, so as to reduce the amount of condensed water flowing to the leeward side of the heat exchanger, and can also effectively reduce the occurrence of water blowing.

[0024] In one embodiment of the present application, the end of the water receiving tray where the drain outlet is provided is also provided with a confluence groove, the confluence groove is connected to the drain outlet, and the first water retaining portion and the installation groove are respectively connected to the confluence groove.

[0025] The above technical solution has the following advantages or beneficial effects: by arranging a confluence groove on one side of the water receiving tray, the condensed water can be collected through the confluence groove and finally discharged through the drain port, thereby improving the discharge efficiency of the condensed water.

[0026] In one embodiment of the present application, a water level detector is further provided on the heat exchanger, and the water level detector is provided on the leeward side of the heat exchanger.

[0027] The above technical solution has the following advantages or beneficial effects: the setting of the water level detector can detect the water level in the docking water tray, and when the water level exceeds the set value, it triggers the air conditioner indoor unit to stop working to avoid a large amount of water overflow, thereby improving the reliability of use.

[0028] In one embodiment of the present application, the water level detector is disposed above the confluence trough, and the water level detector is arranged between the first water retaining portion and the installation groove.

[0029] The above technical solution has the following advantages or beneficial effects: by arranging the water level detector above the confluence trough, on the one hand, the water level height in the water receiving tray can be accurately detected by detecting the water in the confluence trough; on the other hand, the water level detector is also arranged on the side of the heat exchanger, which can also reduce the impact of the water surface caused by the airflow.

[0030] In one embodiment of the present application, the water level triggering height of the water level detector is not higher than the highest water level height of the first water retaining portion.

[0031] The above technical solution has the following advantages or beneficial effects: by setting the water level trigger height of the water level detector to no higher than the highest water level height of the first water retaining part, during use, it can be avoided that the fan assembly continues to run after the water level in the water receiving tray is higher than the highest water level of the first water retaining part, causing serious water blowing, thereby improving the user experience.

[0032] In one embodiment of the present application, the water receiving tray is formed with a first surface, a second surface and a third surface arranged at intervals;

[0033] The mounting groove is formed between the first surface and the second surface, the first water retaining portion is formed between the second surface and the third surface, and the third surface is located between the second water retaining portion and the first water retaining portion;

[0034] The first surface and the second surface are inclined surfaces respectively, and the inclined surfaces extend downwardly in a direction of the drain outlet.

[0035] The above technical solution has the following advantages or beneficial effects: by arranging multiple inclined surfaces in the water receiving tray, on the one hand, a first water retaining portion and an installation groove can be formed by the spaced surfaces; on the other hand, condensed water can flow smoothly to the drain outlet under the action of gravity, thereby improving drainage efficiency.

[0036] In one embodiment of the present application, the housing includes a first shell and a second shell; the first shell is provided with the air outlet, and the second shell is provided with the air return port;

[0037] The heat exchanger and the water receiving pan are arranged in the first shell;

[0038] The fan assembly includes a motor, a volute and a fan, wherein the fan is arranged on the rotating shaft of the motor and is located in the volute;

[0039] The fan assembly further includes a mounting support, the motor and the volute are arranged on the mounting support, the mounting support is detachably arranged on the first housing, and the second housing covers the fan assembly.

[0040] The above technical solution has the following advantages or beneficial effects: by adopting a split-design shell, a split modular design is achieved, the heat exchange component, the fan component and the return air duct component are independent of each other, and during the assembly process, the mounting support of the fan component is fixedly installed on the first shell, and then the second shell of the return air duct assembly is installed on the first shell and covers the fan assembly to improve installation convenience.

[0041] In one embodiment of the present application, the mounting support is provided with a first pre-installation portion and a first fixing portion, and the first housing is provided with a first pre-installation fitting portion and a first fixing fitting portion, the first pre-installation portion and the first pre-installation fitting portion are detachably connected together, and the first fixing portion and the first fixing fitting portion are fixedly connected by screws;

[0042] And / or, a second fixing portion is provided on the second shell, a second fixing matching portion is provided on the first shell, and the second fixing portion and the second fixing matching portion are fixedly connected by screws.

[0043] The above technical solution has the following advantages or beneficial effects: The screw fixation ensures sufficient connection reliability between the fixing portion and the fixed mating portion, meeting the overall connection strength requirements during use. Furthermore, the direct connection between the first pre-assembly portion and the first pre-assembly mating portion facilitates rapid on-site assembly, allowing the mounting support member to be pre-assembled with the first housing and positioned in a fixed installation position, thereby improving assembly efficiency.

[0044] Compared with the prior art, the advantages and positive effects of the present application are: by arranging a first water retaining portion and a second water retaining portion on the water receiving tray, the first water retaining portion and the second water retaining portion are both arranged on the leeward side of the heat exchanger. During use, the first water retaining portion can collect and cache the condensed water affected by the airflow and flowing on the leeward side of the heat exchanger, so as to provide a first line of protection against the blowing water generated by the airflow. Furthermore, the part of the condensed water that passes over the first water retaining portion can be further blocked by the raised second water retaining portion, so as to provide a second line of protection against the blowing water generated by the airflow. Since the first water retaining portion can effectively block most of the blowing water generated by the airflow, the overall height of the second water retaining portion can be effectively reduced, which can improve the air outlet efficiency of the air outlet while meeting the requirements of reducing the impact of blowing water. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is one of the structural diagrams of an embodiment of an air-conditioning indoor unit of the present application;

[0046] Figure 2 This is the second structural diagram of an embodiment of the air-conditioning indoor unit of the present application;

[0047] Figure 3 for Figure 1 Exploded view of the indoor unit of the air conditioner;

[0048] Figure 4 for Figure 1 Assembly drawing of heat exchange component and fan component;

[0049] Figure 5 for Figure 4 A partial enlarged view of area A in the middle;

[0050] Figure 6 for Figure 1 Structural diagram of the heat exchange component;

[0051] Figure 7 for Figure 6 A partial enlarged view of the middle B area;

[0052] Figure 8 for Figure 1 Structural diagram of the blower assembly;

[0053] Figure 9 for Figure 1 Structural diagram of the center return air duct assembly;

[0054] Figure 10 for Figure 9 A partial enlarged view of the middle C area;

[0055] Figure 11 for Figure 1 Structural diagram of the second shell;

[0056] Figure 12 This is the third structural diagram of an embodiment of the air-conditioning indoor unit of the present application;

[0057] Figure 13 for Figure 12 Middle DD section view;

[0058] Figure 14 for Figure 13 Enlarged view of the middle E area;

[0059] Figure 15 for Figure 12 Structural diagram of the electronic control components;

[0060] Figure 16 for Figure 1 Assembly drawing of the middle water tray and heat exchanger;

[0061] Figure 17 for Figure 1 Structural diagram of the middle water tray.

[0062] Reference numerals:

[0063] 1. Heat exchange assembly; 11. First shell; 12. Heat exchanger; 13. Water tray; 14. Water level detector;

[0064] 111, air outlet; 112, first communication port; 113, first pre-installed fitting portion; 114, first fixed fitting portion; 115, second fixed fitting portion; 116, first plug-in terminal;

[0065] 131. Drain port; 132. First water retaining portion; 133. Second water retaining portion; 134. Mounting groove; 135. Confluence groove; 136. First surface; 137. Second surface; 138. Third surface;

[0066] 2. Fan assembly; 21. Mounting support; 22. Motor; 23. Volute; 24. Fan;

[0067] 211, second communication port; 212, first pre-installed portion; 213, first fixing portion; 214, second pre-installed fitting portion; 231, extension portion;

[0068] 3. Return air duct assembly; 31. Second housing; 32. Support plate; 33. Support frame;

[0069] 311, air return port; 312, second fixing portion; 313, second pre-installed portion; 314, extension plate; 321, heat dissipation port;

[0070] 4. Electric control components; 41. Electric control box; 42. Electric control board; 43. Radiator; 44. Thermal insulation space; 45. Electric heating component; 46. Temperature sensing component;

[0071] 411. Box body; 412. Maintenance cover; 413. Wiring port. DETAILED DESCRIPTION

[0072] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0073] In this 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.

[0074] Low-temperature, low-pressure refrigerant enters the compressor, which compresses it into high-temperature, 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, releasing heat into the surrounding environment through the condensation process.

[0075] The expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser to a lower-pressure liquid. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves cooling by utilizing the latent heat of evaporation to exchange heat with the material being cooled. Throughout this cycle, the air conditioner regulates the temperature of the indoor space.

[0076] 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.

[0077] 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 heating mode, and when the indoor heat exchanger functions as an evaporator, the air conditioner functions as a cooler in cooling mode.

[0078] In one embodiment of the present application, an air conditioner indoor unit is provided, comprising: a casing, a heat exchanger 12, a water receiving tray 13, a fan and an electrical control box 41 and other components, wherein the casing is provided with a return air port 311 and an air outlet 111, the heat exchanger 12 is arranged between the return air port 311 and the air outlet 111, and the electrical control board 42 in the electrical control box 41 controls the start-up and operation of the fan. Under the driving action of the fan, the air flow flows from the return air port 311 into the casing and is output from the air outlet 111 after heat exchange through the heat exchanger 12.

[0079] When the heat exchanger 12 is in use, condensed water generated by the heat exchanger 12 will flow to the water receiving tray 13 below, and the condensed water in the water receiving tray 13 will eventually be discharged from the drain port 131 .

[0080] In some embodiments of the present application, the housing adopts a split design, that is, the housing includes a first shell 11 and a second shell 31. Correspondingly, the air conditioner indoor unit is divided into multiple independent modules, which will be specifically explained with reference to the accompanying drawings.

[0081] like Figures 1-17 As shown, the air conditioner indoor unit includes a heat exchange component 1, the heat exchange component 1 includes a first shell 11 and a heat exchanger 12, the first shell 11 is provided with an air outlet 111 and a first communication port 112, the heat exchanger 12 is located between the air outlet 111 and the first communication port 112, and the heat exchanger 12 is configured to exchange heat with the air flow passing through to form a heat exchange airflow;

[0082] The air conditioner indoor unit includes a fan assembly 2, which includes a mounting support 21, a motor 22, a volute 23, and a fan 24. The motor 22 and the volute 23 are arranged on the mounting support 21. The fan 24 is arranged on the rotating shaft of the motor 22 and is located in the volute 23.

[0083] The air conditioner indoor unit includes a return air duct assembly 3, the return air duct assembly 3 includes a second shell 31, and the second shell 31 is provided with a return air port 311;

[0084] The mounting support 21 is provided on the first housing 11 , the volute 23 is communicated with the first communication port 112 , and the second housing 31 is provided on the first housing 11 , and the second housing 31 covers the fan assembly 2 .

[0085] Specifically, the air conditioner indoor unit adopts a split modular design, and the heat exchange component 1, the fan component 2 and the return air duct component 3 are independent of each other. During the assembly process, the mounting support 21 of the fan component 2 is fixedly installed on the first shell 11, and then the second shell 31 of the return air duct component 3 is installed on the first shell 11 and covers the fan component 2.

[0086] The fan assembly 2 is a separate structure from the return duct assembly 3. Although the motor 22 included in the fan assembly 2 is relatively heavy, the fan assembly 2 is separated from the second housing 31, resulting in a smaller overall size. This allows for easier installation, as the fan assembly 2, while heavier, is smaller overall.

[0087] By dividing the air conditioner indoor unit into three independent components, during the assembly process, the heat exchange component 1, the fan component 2 and the return air duct component 3 are assembled together. In this way, for the fan component 2, the overall weight of the fan component 2 is heavier, and the fan component 2 is independent of the return air duct component 3, so that the overall size of the fan component 2 is smaller, which makes it convenient for the operator to assemble the fan component 2 to the heat exchange component 1 on site, and then assemble the larger return air duct component 3 to the heat exchange component 1 to cover the fan component 2 to complete the installation, thereby achieving convenient on-site assembly to improve assembly convenience while meeting the modular design.

[0088] For the air conditioner indoor unit, during transportation, the heat exchange assembly 1, the fan assembly 2, and the return air duct assembly 3 can be assembled together at the factory for transportation. Alternatively, the heat exchange assembly 1, the fan assembly 2, and the return air duct assembly 3 can be packaged and transported separately.

[0089] In one embodiment, Figure 8 As shown, a second communication port 211 is provided on the mounting support 21 , and the outlet of the volute 23 is communicated with the first communication port 112 through the second communication port 211 .

[0090] Specifically, to facilitate the connection and assembly between the volute 23 of the fan and the first communication opening 112 of the first housing 11, a second communication opening 211 may be provided on the mounting support 21. During assembly, after the mounting support 21 is assembled to the first housing 11, the first communication opening 112 and the second communication opening 211 are arranged relative to each other, so that the air output from the outlet of the volute 23 can smoothly enter the first housing 11.

[0091] By providing left and right second communicating ports 211 on the mounting support 21, and after the second communicating ports 211 and the volute 23 are precisely assembled, after the mounting support 21 is assembled on the first shell 11, the second communicating ports 211 and the first communicating ports 112 cooperate with each other to ensure that the volute 23 can smoothly deliver the airflow to the first shell 11.

[0092] In another embodiment, if Figure 8 As shown, the outlet of the volute 23 is provided with an extension portion 231 , and the extension portion 231 sequentially passes through the second communication port 211 and the first communication port 112 and extends into the first housing 11 .

[0093] Specifically, the outlet of the volute 23 is formed at the end of the extension 231. The volute 23 is fixedly mounted on the mounting support 21, and the extension 231 of the volute 23 passes through the second communication port 211. After the mounting support 21 is mounted and fixed to the first housing 11, the extension 231 of the volute 23 is inserted into the first communication port 112 to ensure that the airflow output by the volute 23 effectively enters the first housing 11.

[0094] By configuring an extension portion 231 on the volute 23, the extension portion 231 can pass through the second connecting port 211 and the first connecting port 112 and be inserted into the first shell 11, so that the airflow output by the volute 23 can directly enter the first shell 11, thereby reducing the occurrence of air leakage and improving the heat exchange efficiency of the heat exchanger 12.

[0095] In another embodiment, in order to facilitate quick on-site assembly, the following structural improvement design may be made with respect to the assembly method between the first shell 11 , the mounting support 21 , and the second shell 31 .

[0096] In certain embodiments, such as Figure 4-Figure 8 As shown, in order to facilitate the quick and convenient assembly of the mounting support member 21 onto the first housing 11 , the mounting support member 21 is provided with a first pre-installation portion 212 and a first fixing portion 213 ;

[0097] The first housing 11 is provided with a first pre-installation fitting portion 113 and a first fixed fitting portion 114;

[0098] The first pre-installation portion 212 and the first pre-installation matching portion 113 are detachably connected together, and the first fixing portion 213 and the first fixing matching portion 114 are fixedly connected by screws.

[0099] Specifically, during the assembly process, to improve assembly convenience, the mounting support 21 and the first housing 11 can first be connected without tools via the first pre-assembly portion 212 and the first pre-assembly mating portion 113 to pre-assemble the mounting support 21 and the first housing 11. Then, the first fixing portion 213 and the first fixing mating portion 114 are fixedly connected together using screws, so that the mounting support 21 is finally firmly and reliably mounted on the first housing 11.

[0100] The first pre-installed portion 212 and the first pre-installed matching portion 113 can realize the pre-assembly of the mounting support 21 and the first shell 11, which can facilitate on-site assembly. The operator first connects the mounting support 21 to the first shell 11, and then finally tightens it with screws. On the one hand, it improves the convenience of assembly, and on the other hand, it can reduce the use of screws to improve assembly efficiency.

[0101] The screw fixation ensures the connection reliability between the mounting support 21 and the first housing 11, meeting the overall connection strength requirements during use. The direct connection between the first pre-assembly portion 212 and the first pre-assembly mating portion 113 facilitates quick on-site assembly, allowing the mounting support 21 to be pre-assembled with the first housing 11 and positioned in a fixed installation position, thereby improving assembly efficiency.

[0102] In one embodiment, the first pre-installed portion 212 is a first plug tongue provided on the mounting support 21, and the first plug tongue extends toward the first shell 11; the first pre-installed fitting portion 113 is a first slot formed on the first shell 11, and the first plug tongue is inserted into the first slot.

[0103] Specifically, the first pre-installation portion 212 adopts a first inserting tongue structure, and the first inserting tongue can be inserted into a first slot formed on the first shell 11 to achieve pre-assembly of the mounting support 21 on the first shell 11 .

[0104] By adopting the plug-in method, the first plug tongue can be accurately inserted into the first slot, thereby meeting the requirements of pre-assembly and realizing the relative positioning between the mounting support 21 and the first housing 11 .

[0105] Alternatively, the first pre-installed portion 212 is a first lap plate arranged on the mounting support 21, and the first lap plate is bent relative to the mounting support 21; the first pre-installed fitting portion 113 is a first lap surface formed on the first shell 11, and the first lap plate is overlapped on the first lap surface.

[0106] Specifically, the first pre-installed portion 212 adopts a first overlapping plate. During assembly, the first overlapping portion overlaps a first overlapping surface formed on the first shell 11 , so that the mounting support 21 is pre-assembled on the first shell 11 .

[0107] By adopting the overlapping method, the first overlapping plate can be directly overlapped on the first shell 11, and the overlapping assembly is more convenient to operate on site, thereby facilitating the operator to quickly pre-assemble and install.

[0108] In another embodiment, in order to facilitate the assembly of the second housing 31 , a second fixing portion 312 is provided on the second housing 31 ;

[0109] The first housing 11 is provided with a second fixing fitting portion 115;

[0110] The second fixing portion 312 and the second fixing fitting portion 115 are fixedly connected by screws.

[0111] Specifically, during the installation of the second housing 31 , the second fixing portion 312 and the second fixing fitting portion 115 are fixedly connected together by screws, so that the second housing 31 can be firmly and reliably fixedly installed on the first housing 11 .

[0112] The screw fixation method can ensure the connection reliability between the second shell 31 and the first shell 11, so as to meet the requirements for the overall connection strength during use.

[0113] In one embodiment, Figures 9-11 As shown, the second housing 31 is further provided with a second pre-installed portion 313;

[0114] The mounting support 21 is provided with a second pre-installed fitting portion 214;

[0115] The second pre-installation portion 313 and the second pre-installation matching portion 214 are detachably connected together.

[0116] Specifically, to facilitate quick and easy assembly of the second housing 31, a second pre-installation portion 313 can be provided on the second housing 31. The second pre-installation portion 313 can be directly connected to the second pre-installation mating portion 214 configured on the mounting support 21 already fixed to the first housing 11, thereby pre-installing the second housing 31 on the mounting support 21. The second fixing portion 312 and the second fixing mating portion 115 are then fastened together using screws to securely mount the second housing 31 on the first housing 11.

[0117] The direct connection between the second pre-installed portion 313 and the second pre-installed matching portion 214 facilitates quick on-site assembly and combination, so that the mounting support 21 and the second shell 31 are pre-assembled and positioned in a fixed installation position, thereby improving assembly efficiency.

[0118] In one embodiment, the second pre-installed portion 313 is a slot provided on the inner wall of the second shell 31 , and the second pre-installed fitting portion 214 is a flange structure provided on the mounting support 21 , and the flange structure is stuck in the slot.

[0119] Specifically, the second pre-installed portion 313 is a card slot formed in the second shell 31, and correspondingly, the second pre-installed fitting portion 214 is a flange structure on the mounting support 21. During the pre-installation of the second shell 31, the second shell 31 is brought close to the mounting support 21, and the flange structure can be inserted into the card slot, thereby realizing the pre-installation of the second shell 31 onto the mounting support 21.

[0120] By adopting a card-mounting method, the flange structure can be used to cooperate with the card slot so that the second shell 31 can be directly card-mounted onto the installation support 21 during pre-assembly, thereby improving the convenience of on-site assembly.

[0121] In one embodiment, the second pre-installed portion 313 is a second lap plate provided on the second shell 31, and the second lap plate extends to the outside of the second shell 31; the second pre-installed fitting portion 214 is a second lap surface formed on the mounting support 21, and the second lap plate is overlapped on the second lap surface.

[0122] Specifically, the second pre-installation portion 313 and the second pre-installation matching portion 214 may also be overlapped, that is, the second overlapping plate is directly overlapped on the second overlapping surface formed by the installation support member 21 .

[0123] By adopting the overlapping method, the second overlapping plate can be directly overlapped on the installation support 21, and the overlapping assembly is more convenient to operate on site, thereby facilitating the operator to quickly pre-assemble and install.

[0124] In one embodiment, Figure 11 As shown, the two ends of the second shell 31 are respectively provided with extension plates 314 , and the second fixing portion 312 is provided on the extension plates 314 .

[0125] Specifically, to facilitate the secure connection between the second housing 31 and the first housing 11, extension plates 314 are provided on either side of the second housing 31, and the second securing portions 312 are formed on the extension plates 314. Because the second housing 31 does not need to bear the weight of the fan assembly 2, the gravity load requirements for the connection between the second housing 31 and the first housing 11 are relatively low. Installation requirements can be met by simply securing the second securing portions 312 provided on the extension plates 314 on either side of the second housing 31 to the second securing mating portions 115 on the first housing 11.

[0126] By providing the extension plate 314 and arranging the second fixing portion 312 using the extension plate 314 , the requirements for screw connection and fixing can be met while avoiding the mounting support member 21 already fixedly installed on the first shell 11 , thereby improving assembly convenience.

[0127] In another embodiment, Figure 13-15 As shown, the second housing 31 is further provided with an electric control assembly 4, the electric control assembly 4 including an electric control box 41 and an electric control board 42, the electric control board 42 is provided in the electric control box 41, and the electric control box 41 is provided on the second housing 31;

[0128] The electric control board 42 is at least electrically connected to the fan.

[0129] Specifically, in order to meet the installation requirements of the electric control component 4, the electric control component 4 can be installed on the second shell 31, and the end position of the second shell 31 is used to install the electric control box 41 to meet the control requirements.

[0130] By integrating the electronic control component 4 into the second housing 31 , the return air duct component 3 is integrated with the electronic control component 4 . Therefore, during assembly, there is no need to separately install the electronic control component 4 on site, thereby improving assembly efficiency.

[0131] In the above embodiment of the present application, the fan assembly 2 is detachably arranged on the heat exchange assembly 1, the return air duct assembly 3 is detachably arranged on the heat exchange assembly 1, and the return air duct assembly 3 is also located in the return air cavity formed by the return air duct assembly 3.

[0132] Specifically, the fan assembly 2 is a separate module, and the fan assembly 2 is separately installed and fixed on the first shell 11 to reduce the difficulty of assembling the fan assembly 2 due to its excessive volume. After the fan assembly 2 is separately assembled on the first shell 11, the second shell 31 with large volume and light weight is assembled on the first shell 11, thereby reducing the overall assembly difficulty.

[0133] In another embodiment of the present application, during actual use of the water receiving pan 13, condensed water generated by the heat exchanger 12 will be collected in the water receiving pan 13, and the condensed water accumulated in the water receiving pan 13 will be affected by the airflow on the leeward side of the heat exchanger 12 to produce water blowing.

[0134] In order to solve the above technical problems, the following structural improvements are made to the water receiving tray 13.

[0135] like Figure 16-17 As shown, a drain port 131 is provided at one end of the water receiving tray 13 . The water receiving tray 13 is provided in the housing and below the heat exchanger 12 . The fan assembly 2 is arranged on the windward side of the heat exchanger 12 .

[0136] In which, the water receiving tray 13 is also provided with a first water retaining portion 132 and a second water retaining portion 133, the first water retaining portion 132 and the second water retaining portion 133 are located on the leeward side of the heat exchanger 12, the first water retaining portion 132 is configured to buffer the water in the water receiving tray 13 that is blown by the airflow and flows toward the second water retaining portion 133; the second water retaining portion 133 is configured to block the water in the water receiving tray 13 that is blown by the airflow and flows toward the air outlet 111.

[0137] Specifically, the water receiving pan 13 is provided with a first water retaining portion 132 and a second water retaining portion 133. The first water retaining portion 132 is closer to the heat exchanger 12. Along the airflow direction, the first water retaining portion 132 can buffer condensed water flowing toward the edge of the water receiving pan 13, thereby acting as a first flow barrier for the condensed water. Furthermore, after some condensed water passes over the first water retaining portion 132, the airflow causes the condensed water to continue flowing toward the edge of the water receiving pan 13. During this flow, the second water retaining portion 133 blocks the condensed water, thus acting as a second flow barrier.

[0138] Specifically, the first water retaining portion 132 is a concave structure, the second water retaining portion 133 is a convex structure, and the first water retaining portion 132 is located between the heat exchanger 12 and the second water retaining portion 133 .

[0139] Specifically, in order to achieve the first water retaining portion 132 can cache water, the first water retaining portion 132 is a concave structure in the water receiving tray 13. In this way, the water flowing through the first water retaining portion 132 can be cached in the concave structure, and then will not be blown by the airflow to produce a large amount of water being blown away.

[0140] The water that partially passes over the first water retaining portion 132 or overflows from the first water retaining portion 132 will continue to flow toward the edge of the water receiving tray 13 close to the air outlet 111 under the action of the airflow, and this part of the water will be blocked by the second water retaining portion 133.

[0141] During use, the double blocking of the first water retaining portion 132 and the second water retaining portion 133 can effectively reduce the condensed water being blown by the airflow on the leeward side of the heat exchanger 12 and forming water to be output from the air outlet 111, thereby improving the reliability of use.

[0142] By providing a first water retaining portion 132 and a second water retaining portion 133 on the water receiving tray 13, the first water retaining portion 132 and the second water retaining portion 133 are both arranged on the leeward side of the heat exchanger 12. During use, the first water retaining portion 132 can collect and cache the condensed water affected by the airflow and flowing on the leeward side of the heat exchanger 12, so as to provide a first line of protection against the blowing water generated by the airflow. Furthermore, the part of the condensed water that passes over the first water retaining portion 132 can be further blocked by the raised second water retaining portion 133, so as to provide a second line of protection against the blowing water generated by the airflow. Since the first water retaining portion 132 can effectively block most of the blowing water generated by the airflow, the overall height of the second water retaining portion 133 can be effectively reduced, and the air outlet efficiency of the air outlet 111 can be improved while reducing the impact of blowing water.

[0143] In one embodiment, the first water retaining portion 132 and the second water retaining portion 133 are extended on the water receiving tray 13 along the length direction of the heat exchanger 12 , and the first water retaining portion 132 is also connected to the drain port 131 .

[0144] Specifically, in order to improve the water-blocking effect, the first water-blocking portion 132 and the second water-blocking portion 133 can be extended and distributed in the water receiving tray 13 along the length direction of the heat exchanger 12. The first water-blocking portion 132 and the second water-blocking portion 133 can block the condensed water flowing from various parts of the heat exchanger 12 in the water receiving tray 13 to improve the water-blocking effect.

[0145] In another embodiment, a mounting groove 134 is further provided on the water receiving tray 13 , and the lower portion of the heat exchanger 12 is disposed in the mounting groove 134 .

[0146] Specifically, in order to install and position the heat exchanger 12, an installation groove 134 is also provided in the water receiving tray 13. The installation groove 134 can position the contact portion of the heat exchanger 12 and the water receiving tray 13. At the same time, the installation groove 134 is arranged at the bottom of the heat exchanger 12 and is in direct contact with the heat exchanger 12. The installation groove 134 can also collect the condensed water flowing down the heat exchanger 12. The condensed water collected by the installation groove 134 flows to the drain outlet 131 of the water receiving tray 13 to be discharged outside through the drain outlet 131.

[0147] By setting an installation groove 134 in the water receiving tray 13, on the one hand, the heat exchanger 12 can be fixed and installed, and on the other hand, the condensed water generated by the heat exchanger 12 can be stored and diverted to reduce the amount of condensed water flowing to the leeward side of the heat exchanger 12, and the occurrence of water blowing can also be effectively reduced.

[0148] In one embodiment, the end of the water receiving tray 13 provided with the drain outlet 131 is further provided with a confluence groove 135 , the confluence groove 135 is connected to the drain outlet 131 , and the first water retaining portion 132 and the installation groove 134 are respectively connected to the confluence groove 135 .

[0149] Specifically, the confluence groove 135 is arranged at one end of the water receiving tray 13 having the drain outlet 131, and the confluence groove 135 is directly connected to the drain outlet 131. In this way, the condensed water flowing from the first water retaining portion 132 and the installation groove 134 will converge into the confluence groove 135 and finally be quickly discharged through the drain outlet 131.

[0150] By providing a confluence groove 135 at the end of the water receiving tray 13 to converge the condensed water, the condensed water in the first water retaining portion 132 and the installation groove 134 is concentrated and flows toward the confluence groove 135, so that the condensed water can flow to the side of the heat exchanger 12 as quickly as possible, and the air flow intensity on the side of the heat exchanger 12 is relatively small. In this way, water blowing can also be reduced. At the same time, the condensed water in the confluence groove 135 can also be quickly discharged from the drain port 131 to reduce the amount of condensed water stored in the water receiving tray 13.

[0151] In one embodiment, Figure 16 As shown, a water level detector 14 is further provided on the heat exchanger 12 , and the water level detector 14 is provided on the leeward side of the heat exchanger 12 .

[0152] Specifically, the water level detector 14 can detect the water level in the water tray 13. When the condensed water cannot be discharged in time due to reasons such as blockage of the drain outlet 131 of the water tray 13 and the liquid level is higher than the set water level of the water tray 13, the water level detector 14 will send a signal to the electronic control board 42 to execute corresponding operations such as alarm or shutdown through the electronic control board 42.

[0153] The above technical solution has the following advantages or beneficial effects: the setting of the water level detector 14 can detect the water level in the docking water tray 13, and when the water level exceeds the set value, it triggers the air conditioner indoor unit to stop working to avoid a large amount of water overflow, thereby improving the reliability of use.

[0154] In one embodiment, the water level detector 14 is disposed above the confluence trough 135 , and the water level detector 14 is arranged between the first water retaining portion 132 and the installation groove 134 .

[0155] Specifically, the water in the water receiving tray 13 will flow to the confluence groove 135, and then flow to the drain outlet 131 through the confluence groove 135 for discharge. For this purpose, a water level detector 14 is arranged above the confluence groove 135. The water level detector 14 determines the water level in the water receiving tray 13 by detecting the water level in the confluence groove 135.

[0156] By arranging the water level detector 14 above the confluence trough 135, on the one hand, the water level height in the water receiving tray 13 can be accurately detected by detecting the water in the confluence trough 135. On the other hand, the water level detector 14 is also arranged on the side of the heat exchanger 12, which can also reduce the impact of the water surface caused by the airflow.

[0157] In one embodiment, the water level triggering height of the water level detector 14 is not higher than the highest water level of the first water retaining portion 132 .

[0158] Specifically, the water level detector 14 detects the water level height of the water receiving tray 13. When the water level reaches the trigger height, the water level detector 14 will send a signal to the controller of the electronic control board 42, so that the controller in the electronic control board 42 can control the operation of the air conditioner indoor unit to give corresponding instructions, such as shutdown and alarm.

[0159] During the installation process of the water level detector 14, the water level trigger height position of the water level detector 14 is adjusted to be lower than the highest water level of the first water retaining part 132. In this way, when the water level of the first water retaining part 132 is higher than the water level trigger height of the adjusted water level detector 14, the controller can promptly control the air-conditioning indoor unit to execute the corresponding instruction action, such as shutting down, thereby reducing the water level in the water receiving tray 13 from being too high and causing serious water blowing.

[0160] By setting the water level trigger height of the water level detector 14 to no higher than the highest water level height of the first water retaining part 132, during use, it can be avoided that the fan assembly 2 continues to run after the water level in the water receiving tray 13 is higher than the highest water level of the first water retaining part 132, causing serious water blowing, thereby improving the user experience.

[0161] In one embodiment, Figure 17 As shown, the water receiving tray 13 is formed with a first surface 136, a second surface 137 and a third surface 138 arranged at intervals;

[0162] The mounting groove 134 is formed between the first surface 136 and the second surface 137 , the first water retaining portion 132 is formed between the second surface 137 and the third surface 138 , and the third surface 138 is located between the second water retaining portion 133 and the first water retaining portion 132 ;

[0163] The first surface 136 and the second surface 137 are inclined surfaces, respectively. The inclined surfaces extend downwardly and obliquely toward the drain outlet 131 .

[0164] Specifically, a first surface 136, a second surface 137, and a third surface 138 are formed on the bottom surface of the water receiving tray 13, and the spaced surfaces form corresponding mounting grooves 134 and first water retaining portions 132 in the water receiving tray 13. Furthermore, the first surface 136, the second surface 137, and the third surface 138 all extend obliquely toward the drain outlet 131 to ensure that condensed water can flow toward the drain outlet 131.

[0165] By providing multiple inclined surfaces in the water receiving tray 13, on the one hand, the first water retaining portion 132 and the installation groove 134 can be formed by the spaced surfaces, and on the other hand, the condensed water can flow smoothly to the drain outlet 131 under the action of gravity to improve the drainage efficiency.

[0166] In one embodiment of the present application, when the housing adopts a split design, in order to facilitate the connection of electrical components between different housings to the electric control board 42 in the electric control box 41, the following structural improvement design is performed.

[0167] like Figure 3 、 Figure 4 and Figure 15 As shown, the air conditioner indoor unit includes a heat exchange module, which includes a heat exchange component 1 and an electrical device. The heat exchange component 1 includes a first shell 11 and a heat exchanger 12. The first shell 11 is provided with an air outlet 111. The outside of the first shell 11 is also provided with a wiring portion. The heat exchanger 12 is configured to exchange heat for the air flow passing through to form a heat exchange airflow. The electrical device is located in the first shell 11 and is electrically connected to the wiring portion.

[0168] The air conditioner indoor unit also includes an air supply module, which includes a second housing 31, a fan assembly 2 and an electronic control assembly 4. The second housing 31 is provided with a return air port 311. The fan assembly 2 is disposed in the second housing 31 and is connected to the first housing 11 through the first communicating hole. The electronic control assembly 4 includes an electronic control box 41 and an electronic control board 42. The electronic control board 42 is disposed in the electronic control box 41. The electronic control box 41 is disposed in the second housing 31. The electronic control board 42 is also electrically connected to the fan assembly 2.

[0169] The second housing 31 is detachably disposed on the first housing 11 , and the wiring portion is configured to be electrically connected to the electric control board 42 via a cable outside the first housing 11 .

[0170] Specifically, the first shell 11 of the heat exchange module is provided with a wiring portion, which is located outside the first shell 11 to enable electrical components in the first shell 11 to be connected outside the first shell 11 .

[0171] Specifically, a first plug-in terminal 116 is also provided on the first shell 11 as a wiring part, the heat exchanger 12 is located between the air outlet 111 and the first connecting port 112, and the heat exchanger 12 is configured to heat the air flow passing through to form a heat exchange airflow, and the electrical component is located in the first shell 11 and is electrically connected to the first plug-in terminal 116.

[0172] Specifically, the heat exchange module has a heat exchanger 12 and electrical components installed in a first housing 11. The electrical components in the first housing 11 are pre-connected to the first plug-in terminals 116 via wires. The heads of the first plug-in terminals 116 are exposed outside the first housing 11 to facilitate direct wiring outside the first housing 11.

[0173] For the air supply module, the electrical control box 41 is provided with a wiring opening 413. The second housing 31 is detachably mounted on the first housing 11, and the first plug-in terminal 116 is located in the wiring opening 413. The first plug-in terminal 116 is electrically connected to the electrical control board 42 via a cable.

[0174] Specifically, during the assembly process, after the second housing 31 is assembled to the first housing 11, the electrical components inside the first housing 11 can be electrically connected to the electrical control board 42 via cables outside the first housing 11. This eliminates the need to run cables inside the first housing 11 during assembly. Instead, the electrical components in the first housing 11 can be electrically connected to the electrical control board 42 by simply connecting the first plug-in terminals 116 to the electrical control board 42 via cables outside the first housing 11.

[0175] By providing a wiring portion, such as the first plug-in terminal 116, on the outside of the first shell 11 of the heat exchange module, the electrical components in the heat exchange module are pre-connected to the first plug-in terminal 116 in the first shell 11 through a wire. When assembling on-site at the user's home, after assembling the second shell 31 and the first shell 11 together, there is no need to lead the wires from the first shell 11. Instead, the cable is directly connected between the first plug-in terminal 116 and the electrical control board 42 on the outside of the first shell 11 to complete the line connection, which facilitates on-site assembly and improves assembly convenience.

[0176] In one embodiment, a second plug terminal (not shown) is provided on the electric control board 42, and first plug connectors are respectively provided at both ends of the cable, wherein one of the first plug connectors is plugged into the first plug terminal 116, and the other first plug connector is plugged into the second plug terminal.

[0177] Specifically, in order to conveniently and quickly connect the cables, a first plug connector can be provided at the connection of the cables, and correspondingly, a second plug terminal can be provided on the electric control board 42. The first plug connector will be plugged between the corresponding first plug terminal 116 and the second plug terminal to facilitate quick plug-in assembly by the operator on site.

[0178] In one embodiment, a second plug connector is provided at one end of the cable, and the second plug connector is plugged into the first plug terminal 116 . The other end of the cable is electrically connected to the electric control board 42 .

[0179] Specifically, one end of the cable is connected to the first plug terminal 116 using a second plug connector, and the other end of the cable can be connected using conventional wires. For example, the end of the cable has a wiring piece for installation on a structure such as a terminal post of the electrical control board 42.

[0180] The plug-in connector is used to connect the cables to the plug-in terminals, so that the cables can be connected without the help of tools during the connection process, thereby improving the convenience of assembly.

[0181] In another embodiment, Figure 11 As shown, a support plate 32 is further provided in the second shell 31, and the support plate 32 is arranged vertically;

[0182] The electric control box 41 is located on one side of the support plate 32 , and the fan assembly 2 is located on the other side of the support plate 32 .

[0183] Specifically, the support plate 32 is disposed in the second housing 31 . The fan assembly 2 and the electric control box 41 can be separated by the support plate 32 . The electric control box 41 is installed on one side of the support plate 32 .

[0184] By arranging the support plate 32 in the second shell 31, on the one hand, the support plate 32 can improve the structural strength of the second shell 31 itself, and on the other hand, the support plate 32 can also separate two spaces in the second shell 31 to place the electric control box 41 and the fan assembly 2 respectively.

[0185] In certain embodiments, such as Figure 11 As shown, a support frame 33 is further provided at one end of the second shell 31, and the support frame 33 is arranged on the outside of the support plate 32;

[0186] The electric control box 41 is disposed on the supporting frame 33 .

[0187] Specifically, a support frame 33 is further provided at the end of the second shell 31 , and the support frame 33 can meet the installation requirements of the electric control box 41 fixedly installed on the second shell 31 , for example, the electric control box 41 can be fixedly installed on the support frame 33 by screws.

[0188] By adding a support frame 33 at the end of the second shell 31, on the one hand, the support frame 33 can also enhance the structural strength of the second shell 31 at the end of the second shell 31, and on the other hand, the support frame 33 can also meet the requirements for installing the electric control box 41 to facilitate the assembly of the electric control box 41 on the second shell 31.

[0189] In some embodiments, the support plate 32 is further provided with a heat dissipation vent 321 ;

[0190] A radiator 43 is provided on the electric control box 41 , and the radiator 43 passes through the electric control box 41 . The radiator 43 is thermally connected to the electric control board 42 . The end of the radiator 43 extending outside the electric control box 41 passes through the heat dissipation port 321 and is arranged on one side of the fan assembly 2 .

[0191] Specifically, during normal operation, the electrical control box 41 is closed, and the electrical control board 42 generates heat when powered. Heat from the electrical control board 42 is absorbed by the radiator 43 and conducted to the exterior of the electrical control box 41. The portion of the radiator 43 located outside the electrical control box 41 is positioned on one side of the fan assembly 2 through the heat dissipation vents 321. The airflow generated by the fan assembly 2 during operation dissipates heat from the radiator 43 in a timely manner, ensuring stable operation of the electrical control board 42.

[0192] By setting a heat dissipation port 321 on the support plate 32, the radiator 43 can extend through the heat dissipation port 321 to the area where the fan assembly 2 is located. The radiator 43 uses the airflow generated by the fan assembly 2 to dissipate heat, so that the radiator 43 can quickly and efficiently release the heat generated by the electronic control board 42 in a timely and efficient manner to ensure that the electronic control board 42 can work smoothly.

[0193] In one embodiment, Figure 15 As shown, the electric control box 41 includes a box body 411 and a maintenance cover 412. The box body 411 is provided with an inspection port and the wiring port 413. The maintenance cover 412 is detachably provided on the inspection port.

[0194] The box body 411 is disposed in the second shell 31 , and the maintenance cover 412 is arranged at one end of the second shell 31 .

[0195] Specifically, to facilitate later maintenance of the electronic control assembly 4, the electronic control box 41 includes a box body 411 and a maintenance cover 412. The maintenance cover 412 covers an access opening provided on the box body 411. The box body 411 is mounted on the support frame 33, and the access opening is located at an end of the second housing 31 and is covered by the maintenance cover 412. When maintenance is required, the maintenance cover 412 can be removed to open the access opening, allowing maintenance of the electronic control board 42 and other components within the box body 411.

[0196] At the same time, the inspection port is arranged on the end face of the box body 411, and the wiring port 413 is arranged on the side wall of the box body 411 opposite to the first shell 11. When the maintenance cover 412 is opened, the first plug-in terminal 116 is arranged at the wiring port 413, and the cable on the first plug-in terminal 116 can be disassembled and assembled from the box body 411 to improve the convenience of assembly and maintenance.

[0197] By providing a detachable maintenance cover 412 on the box body 411 of the electric control box 41, on the one hand, the maintenance cover 412 can be opened during the maintenance process to facilitate maintenance by the operator; on the other hand, by opening the maintenance cover 412, the wiring opening 413 on the side wall of the box body 411 can be exposed, thereby facilitating the completion of the cable assembly of the first plug terminal 116 during the assembly process, thereby improving the convenience of assembly and maintenance.

[0198] In some embodiments, the electrical components installed in the first housing 11 may be implemented in various forms. For example, the electrical components may include a temperature sensor, a water level detector 14 , and / or a drainage pump.

[0199] Correspondingly, a plurality of first plug-in terminals 116 are provided on the first housing 11 , and the electrical components are connected to the corresponding first plug-in terminals 116 .

[0200] Specifically, by configuring multiple first plug-in terminals 116 to meet the wiring requirements of electrical devices of different functional types, on the one hand, unified wiring is achieved within the first shell 11, and on the other hand, it is convenient for on-site operators to connect different first plug-in terminals 116 to the electrical control board 42 through different cables, thereby improving the efficiency of on-site assembly.

[0201] In some embodiments, the air supply module may be designed as an integral modular structure, or the air supply module may be designed as a split modular structure.

[0202] For example, the air supply module may be designed as an integral modular structure, wherein a fan bracket is provided in the second shell 31 , the motor 22 and the volute 23 are provided on the fan bracket, and the fan 24 is provided on the rotating shaft of the motor 22 and located in the volute 23 .

[0203] Specifically, by setting a fan bracket in the second shell 31, the installation requirements of the fan assembly 2 in the second shell 31 can be met, so that the fan assembly 2 is centrally installed in the second shell 31 to meet the requirement that the air supply module is an integral modular structure design.

[0204] For example, the fan assembly 2 includes a mounting support 21, a motor 22, a volute 23, and a fan 24. The motor 22 and the volute 23 are arranged on the mounting support 21. The fan 24 is arranged on the rotating shaft of the motor 22 and is located in the volute 23.

[0205] The mounting support 21 is disposed on the first housing 11 .

[0206] Specifically, when the air supply module adopts a split modular design, the fan assembly 2 can be independent of the second shell 31 and independently assembled and fixed on the first shell 11. To this end, the fan assembly 2 is provided with a mounting support 21, and components such as the motor 22, the volute 23 and the fan 24 are assembled centrally on the mounting support 21. The fan assembly 2 is fixedly mounted on the first shell 11 through the mounting support 21.

[0207] By setting up the mounting support 21, the modular design of the fan assembly 2 can be met, so that components such as the motor 22, the volute 23 and the fan 24 are assembled on the mounting support 21, and can be independently assembled with the first shell 11 through the mounting support 21. In this way, the overall size of the fan assembly 2 is smaller, which makes it convenient for the operator to assemble the fan assembly 2 on the first shell 11 on site.

[0208] In one embodiment of the present application, the electronic control assembly 4 generates heat during operation of the electronic control board 42, which needs to be dissipated by the radiator 43. During the heat dissipation process, the heat of the radiator 43 is carried away by the airflow returning from the return air port 311. In cooling mode, the airflow from the return air port 311 is relatively low in temperature, and the airflow from the return air port 311 dissipates heat and cools the radiator 43, which may cause the temperature of the radiator 43 to drop below the dew point.

[0209] Since the radiator 43 is thermally connected to the electronic control board 42, when the temperature of the radiator 43 is lower than the dew point temperature, the temperature of the heat conduction portion between the electronic control board 42 and the radiator 43 in the electronic control box 41 will drop below the dew point temperature, thereby causing condensation to form on the surface of the electronic control board 42.

[0210] In order to solve the problem of condensation caused by heat dissipation of the electric control board 42, the electric control assembly 4 includes an electric heating component 45. The electric heating component 45 is arranged on the radiator 43, and the radiator 43 is heated by energizing the electric heating component 45.

[0211] like Figure 13-15 As shown, the electronic control component 4 includes a temperature sensing component 46 , which is disposed on the radiator 43 , and detects the temperature of the radiator 43 through the temperature sensing component 46 .

[0212] The controller is configured to control the electric heating component 45 to turn on or off according to the temperature of the radiator 43 detected by the temperature sensing component 46 so that the temperature of the radiator 43 is higher than the dew point temperature.

[0213] Specifically, during use, when the air conditioner indoor unit is in cooling mode, the temperature of the return air from the return air vent 311 is lower than the ambient temperature, and the humidity of the return air is also lower than the ambient humidity. The return air flows through the radiator 43 to dissipate heat, thereby dissipating heat from the electric control board 42 in the electric control box 41.

[0214] When the return air temperature is low, causing the temperature of the radiator 43 to fall below the dew point, heat conduction occurs between the radiator 43 and the electronic control board 42, causing the temperature of the area where the electronic control board 42 and the radiator 43 are in thermal contact to become substantially the same as the temperature of the radiator 43. At this point, the temperature of the corresponding portion of the electronic control board 42 falls below the dew point, causing condensation to form on the electronic control board 42.

[0215] The temperature sensing component 46 on the radiator 43 can detect the temperature of the radiator 43. The temperature sensing component 46 is configured to detect the temperature of the radiator 43 and transmit the detected temperature signal to the controller, which then controls the power on and off of the electric heating component 45. The temperature sensing component 46 transmits the detected temperature signal to the controller on the electric control board 42, which controls the power on and off of the electric heating component 45 based on the temperature signal detected by the temperature sensing component 46.

[0216] That is, after the temperature sensing component 46 detects that the temperature of the radiator 43 is lower than the dew point temperature, the controller can control the electric heating component 45 to be energized as needed, so as to perform auxiliary electric heating treatment on the radiator 43 through the electric heating component 45. In this way, the temperature of the radiator 43 can be increased to ensure that the temperature of the electric control board 42 is not lower than the dew point temperature, thereby achieving condensation on the electric control board 42 placed in the electric control box 41.

[0217] By configuring a temperature sensing component 46 on the radiator 43, the temperature sensing component 46 can check the temperature of the radiator 43. During use, in the cooling mode, the temperature of the air flow returning from the return air port 311 is also low, resulting in a low temperature of the radiator 43. When the temperature of the radiator 43 is lower than the dew point temperature, the electric heating component 45 can be started, and the radiator 43 is heated by energizing the electric heating component 45 to increase the overall temperature of the radiator 43, thereby making the temperature of the radiator 43 higher than the dew point temperature. In this way, condensation on the surface of the electric control board 42 that is thermally connected to the radiator 43 due to the temperature of the radiator 43 being lower than the dew point temperature can be avoided, so as to avoid electrical failure of the electric control board 42 due to condensation generated in the electric control box 41, thereby improving the operating reliability of the air conditioner indoor unit.

[0218] In one embodiment, the controller is configured to control the electric heating component 45 to be energized for heating after the temperature sensing component 46 detects that the temperature of the radiator 43 is lower than the dew point temperature and the duration is greater than a set time value.

[0219] Specifically, when the controller detects the temperature of the radiator 43 through the temperature sensing component 46 to control the operation of the electric heating component 45, when the temperature of the radiator 43 is lower than the dew point temperature, condensation will not be immediately generated on the electric control board 42. There is a phenomenon that the temperature of the radiator 43 is lower than the dew point temperature for a short time and then rises again.

[0220] In order to avoid the controller from frequently starting and stopping the electric heating component 45, during the control process, the temperature sensing component 46 controls the electric heating component 45 to be powered on and started only after the temperature of the radiator 43 detected by the temperature sensing component 46 is continuously lower than the dew point temperature and the duration of the temperature maintenance exceeds the pre-set time value in the controller, so as to heat the radiator 43 through the electric heating component 45.

[0221] By delaying the power on and heating of the electric heating component 45 through the controller, it can be ensured that the electric heating component 45 is started after the temperature of the radiator 43 is continuously lower than the dew point temperature for a set time value. On the one hand, it can effectively ensure that the radiator 43 can be heated in time to avoid condensation on the electric control board 42. On the other hand, it can avoid the controller from frequently starting and stopping the electric heating component 45, so as to improve the reliability of the use of the electric heating component 45.

[0222] In one embodiment, after the thermal component of the motor 22 is powered on, the controller is configured to control the electric heating component 45 to be powered off after the temperature sensing component 46 detects that the temperature of the radiator 43 is higher than the dew point temperature and the difference between the temperature of the radiator 43 and the dew point temperature is greater than a preset temperature difference.

[0223] Specifically, after the temperature of the radiator 43 falls below the dew point and the electric heating element 45 is activated, the electric heating element 45 can be deactivated while heating the radiator 43. Similarly, to prevent the electric heating element 45 from being frequently activated and deactivated, the controller deactivates the electric heating element 45 when the temperature of the radiator 43 exceeds the dew point and the temperature difference is greater than a preset temperature difference.

[0224] By controlling the electric heating component 45 to heat the radiator 43 to a temperature higher than the dew point temperature to a set temperature difference value, it can be ensured that after the electric heating component 45 is turned off, the radiator 43 itself has sufficient heat to exchange heat with the return air flow from the return air port 311, thereby extending the time it takes for the radiator 43 to cool down to below the dew point temperature again, thereby avoiding the controller from frequently starting and stopping the electric heating component 45, thereby improving the reliability of the use of the electric heating component 45.

[0225] In some embodiments, the controller is further configured to calculate a corresponding dew point temperature according to the ambient temperature of the air conditioner indoor unit.

[0226] Specifically, when the controller is controlling the operation of the air conditioner indoor unit, the dew point temperature is affected by external environmental factors. Therefore, the actual dew point temperature of the radiator 43 may also vary under different external environmental conditions. Therefore, during the control process, the controller also calculates the dew point temperature of the radiator 43 based on the ambient temperature of the air conditioner indoor unit to more accurately control the heating of the electric heating element 45.

[0227] For different environmental conditions, the dew point temperature can be calculated using a conventional dew point temperature calculation method, which is not limited or elaborated herein.

[0228] In some embodiments, a support plate 32 is provided in the housing, and a heat dissipation port 321 is provided on the support plate 32; the electrical control box 41 is arranged on one side of the support plate 32, and the fan assembly 2 is arranged on the other side of the support plate 32; an insulating space 44 is formed between the electrical control box 41 and the support plate 32, and the radiator 43 is inserted into the heat dissipation port 321.

[0229] Specifically, the support plate 32 is arranged in the outer shell to isolate the fan assembly 2 and the electrical control box 41. At the same time, the electrical control box 41 and the support plate 32 are spaced apart to form an insulating space 44. The insulating space 44 can reduce the return air flow from directly conducting heat to the electrical control box 41, thereby causing the overall temperature inside the electrical control box 41 to drop and produce condensation.

[0230] In order to meet normal heat dissipation requirements, the radiator 43 will be inserted into the heat dissipation port 321 and extend to the other side of the support plate 32 to be close to the fan assembly 2 to ensure that during the operation of the fan assembly 2, the radiator 43 can rely on the airflow converging into the fan assembly 2 to dissipate heat.

[0231] By setting a support plate 32 in the outer casing, on the one hand, the support plate 32 can isolate and separate the electrical control box 41 and the fan assembly 2. On the other hand, an insulating space 44 is formed between the support plate 32 and the electrical control box 41, which can reduce the impact of the return air flow on the electrical control box 41, thereby improving the reliability of use.

[0232] In some embodiments, the radiator 43 is arranged on the inlet side of the volute 23 ; wherein at least part of the airflow flowing in from the return air port 311 flows through the radiator 43 and enters the inlet of the volute 23 .

[0233] Specifically, after the radiator 43 extends through the heat dissipation port 321 of the support plate 32, the end of the radiator 43 will be located on one side of the inlet of the volute 23 in the fan assembly 2. When the return air flow flows back to the inlet of the volute 23, part of the return air flow will flow through the radiator 43 to provide good heat dissipation treatment for the radiator 43.

[0234] By arranging the radiator 43 on the inlet side of the volute 23 , it can be ensured that the return air flow can flow through the radiator 43 , thereby ensuring that the radiator 43 has a good heat dissipation effect.

[0235] In some embodiments, a heat insulation layer (not shown) is provided in the heat insulation space 44 , and the heat insulation layer surrounds the outer periphery of the heat sink 43 .

[0236] Specifically, to improve the insulation effect of the insulation space 44, an insulation layer may be provided in the insulation space 44. The insulation layer may be made of an insulation material, such as insulation cotton or insulation pads. The insulation layer can more effectively insulate the heat, thereby further preventing the return air flow from being transferred to the electrical control box 41.

[0237] By setting an insulation layer between the electrical control box 41 and the support plate 32, the insulation layer can better play the role of thermal isolation, thereby reducing the coldness of the return air flow being conducted into the electrical control box 41, reducing the temperature inside the electrical control box 41 to below the dew point temperature, and thereby reducing the generation of condensation in the electrical control box 41, thereby improving the reliability of use.

Claims

1. An air conditioner indoor unit, characterized in that: include: A housing, wherein the housing is provided with an air return port and an air outlet; a heat exchanger, the heat exchanger being arranged between the return air port and the air outlet, the heat exchanger being configured to exchange heat with the air flow passing therethrough to form a heat exchange air flow; a fan assembly, the fan assembly being located in the housing and arranged on a windward side of the heat exchanger; a water receiving tray, one end of which is provided with a drain port, the water receiving tray being arranged in the housing and being located below the heat exchanger; In which, the water receiving tray is also provided with a first water retaining part and a second water retaining part, the first water retaining part and the second water retaining part are located on the leeward side of the heat exchanger, the first water retaining part is a concave structure, and the second water retaining part is a convex structure, and the first water retaining part is located between the heat exchanger and the second water retaining part.

2. The air conditioner indoor unit according to claim 1, characterized in that: The first water retaining portion and the second water retaining portion are extended and arranged on the water receiving tray along the length direction of the heat exchanger, and the first water retaining portion is also communicated with the drain port.

3. The air conditioner indoor unit according to claim 1, characterized in that: The water receiving tray is also provided with a mounting groove, and the lower part of the heat exchanger is arranged in the mounting groove.

4. The air conditioner indoor unit according to claim 3, characterized in that: The end of the water receiving tray where the drain outlet is provided is further provided with a confluence groove, the confluence groove is communicated with the drain outlet, and the first water retaining portion and the mounting groove are respectively communicated with the confluence groove.

5. The air conditioner indoor unit according to claim 4, characterized in that: The heat exchanger is also provided with a water level detector, which is arranged on the leeward side of the heat exchanger.

6. The air conditioner indoor unit according to claim 5, characterized in that: The water level detector is disposed above the confluence trough and arranged between the first water retaining portion and the mounting groove.

7. The air conditioner indoor unit according to claim 5, characterized in that: The water level triggering height of the water level detector is not higher than the highest water level height of the first water retaining part.

8. The air conditioner indoor unit according to claim 3, characterized in that: The water receiving tray is formed with a first surface, a second surface and a third surface arranged at intervals; The mounting groove is formed between the first surface and the second surface, the first water retaining portion is formed between the second surface and the third surface, and the third surface is located between the second water retaining portion and the first water retaining portion; The first surface and the second surface are inclined surfaces respectively, and the inclined surfaces extend downwardly in a direction of the drain outlet.

9. The air conditioner indoor unit according to claim 1, characterized in that: The housing includes a first shell and a second shell; the first shell is provided with the air outlet, and the second shell is provided with the air return port; The heat exchanger and the water receiving pan are arranged in the first shell; The fan assembly includes a motor, a volute and a fan, wherein the fan is arranged on the rotating shaft of the motor and is located in the volute; The fan assembly further includes a mounting support, the motor and the volute are arranged on the mounting support, the mounting support is detachably arranged on the first housing, and the second housing covers the fan assembly.

10. An air conditioner indoor unit, characterized in that: include: The housing is provided with an air return port and an air outlet a heat exchanger, the heat exchanger being arranged between the return air port and the air outlet, the heat exchanger being configured to exchange heat with the air flow passing therethrough to form a heat exchange air flow; a fan assembly, the fan assembly being located in the housing and arranged on a windward side of the heat exchanger; a water receiving tray, one end of which is provided with a drain port, the water receiving tray being arranged in the housing and being located below the heat exchanger; Wherein, the water receiving tray is further provided with a first water retaining portion and a second water retaining portion, wherein the first water retaining portion and the second water retaining portion are located on the leeward side of the heat exchanger; The first water retaining portion is configured to buffer the water in the water receiving tray blown by the airflow; and the second water retaining portion is configured to block the flow of the water in the water receiving tray blown by the airflow.

11. The air conditioner indoor unit according to claim 10, characterized in that: The first water retaining portion and the second water retaining portion are extended and arranged on the water receiving tray along the length direction of the heat exchanger, and the first water retaining portion is also communicated with the drain port.

12. The air conditioner indoor unit according to claim 10, characterized in that: The water receiving tray is also provided with a mounting groove, and the lower part of the heat exchanger is arranged in the mounting groove.

13. The air conditioner indoor unit according to claim 12, characterized in that: The end of the water receiving tray where the drain outlet is provided is further provided with a confluence groove, the confluence groove is communicated with the drain outlet, and the first water retaining portion and the mounting groove are respectively communicated with the confluence groove.

14. The air conditioner indoor unit according to claim 13, characterized in that: The heat exchanger is also provided with a water level detector, which is arranged on the leeward side of the heat exchanger.

15. The air conditioner indoor unit according to claim 14, characterized in that: The water level detector is disposed above the confluence trough and arranged between the first water retaining portion and the mounting groove.

16. The air conditioner indoor unit according to claim 14, characterized in that: The water level triggering height of the water level detector is not higher than the highest water level height of the first water retaining part.

17. The air conditioner indoor unit according to claim 12, wherein: The water receiving tray is formed with a first surface, a second surface and a third surface arranged at intervals; The mounting groove is formed between the first surface and the second surface, the first water retaining portion is formed between the second surface and the third surface, and the third surface is located between the second water retaining portion and the first water retaining portion; The first surface and the second surface are inclined surfaces respectively, and the inclined surfaces extend downwardly in a direction of the drain outlet.

18. The air conditioner indoor unit according to claim 10, characterized in that: The housing includes a first shell and a second shell; the first shell is provided with the air outlet, and the second shell is provided with the air return port; The heat exchanger and the water receiving pan are arranged in the first shell; The fan assembly includes a motor, a volute and a fan, wherein the fan is arranged on the rotating shaft of the motor and is located in the volute; The fan assembly further includes a mounting support, the motor and the volute are arranged on the mounting support, the mounting support is detachably arranged on the first housing, and the second housing covers the fan assembly.

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