Indoor unit of air conditioner

Abstract

The air conditioner indoor unit comprises a heat exchange assembly, the heat exchange assembly comprises a first shell, and an air outlet and a first communicating opening are formed in the first shell; the heat exchanger is located between the air outlet and the first communication port, and the heat exchanger is configured to perform heat exchange on flowing airflow to form heat exchange airflow; the fan assembly comprises a mounting supporting piece, a motor, a volute and a fan; the motor and the volute are arranged on the installation supporting piece, and the fan is arranged on a rotating shaft of the motor and located in the volute. The air return duct assembly comprises a second shell, and an air return port is formed in the second shell; wherein the installation supporting piece is arranged on the first shell, the volute is communicated with the first communication opening, the second shell is arranged on the first shell, and the fan assembly is covered with the second shell. On the premise that the modular design is met, on-site assembly is facilitated, so that the assembly convenience is improved.

Description

Technical Field

[0001] This application relates to air conditioners, and in particular to an indoor unit of an air conditioner. Background Art

[0002] Air conditioners are commonly used household appliances in people's daily lives. Air conditioners are divided into wall-mounted air conditioners and cabinet air conditioners. Among them, an air conditioner usually includes an indoor unit and an outdoor unit. The indoor unit is installed on the indoor side, while the outdoor unit is installed on the outdoor side.

[0003] The installation methods of indoor units in the prior art are different, and are divided into vertical indoor units, wall-mounted indoor units, and duct air conditioners. Among them, the duct air conditioner is widely promoted and used because it occupies less effective indoor space. The duct air conditioner (usually called a duct machine) described in the conventional technology generally includes a housing, and components such as a fan, a heat exchanger, a water receiving tray, and a drainage pump provided in the housing. Among them, in order to facilitate assembly, a duct machine with a split design is promoted and used. For example, Chinese Patent Publication No. CN117646999A discloses an assembly structure and a split duct machine applying the same. The duct machine includes two split components. One of the split components is provided with components such as a heat exchanger, and the other split component is provided with components such as a fan and an electric control box. During the assembly process, the two split components need to be connected together on site. For the split component where the fan is installed, it is heavy and large in volume, resulting in greater assembly difficulty.

[0004] In view of this, how to design a technology that is convenient for on-site assembly to improve assembly convenience is the technical problem to be solved by this application. Utility Model Content

[0005] In view of the problems pointed out in the background art, this application proposes an indoor unit of an air conditioner, which realizes convenient on-site assembly to improve assembly convenience on the premise of meeting modular design.

[0006] To achieve the above application purpose, the following technical solutions are adopted in this application:

[0007] In some embodiments of this application, an indoor unit of an air conditioner is provided, including:

[0008] A heat exchange assembly, the heat exchange assembly includes a first housing and a heat exchanger. An air outlet and a first communication port are provided on the first housing. The heat exchanger is located between the air outlet and the first communication port. The heat exchanger is configured to exchange heat with the flowing air to form a heat exchange air flow;

[0009] A fan assembly, the fan assembly includes a mounting support, a motor, a volute, and a fan. The motor and the volute are provided on the mounting support. The fan is provided on the rotating shaft of the motor and is located in the volute;

[0010] Return air duct assembly, the return air duct assembly includes a second housing, and the second housing is provided with a return air inlet;

[0011] Wherein, the installation support is arranged on the first housing, the volute is communicated with the first communication port, the second housing is arranged on the first housing, and the second housing covers the fan assembly.

[0012] In an embodiment of the present application, a second communication port is arranged on the installation support, and the outlet of the volute is communicated with the first communication port through the second communication port.

[0013] The above technical solution has the following advantages or beneficial effects: By providing a second communication port on the installation support, after the second communication port is precisely assembled with the volute, when the installation support is assembled onto the first housing, with the cooperation of the second communication port and the first communication port, it is ensured that the volute can smoothly deliver the air flow into the first housing.

[0014] In an embodiment of the present application, an extension portion is arranged at the outlet of the volute, and the extension portion sequentially passes through the second communication port and the first communication port and extends into the first housing.

[0015] The above technical solution has the following advantages or beneficial effects: By configuring an extension portion on the volute, the extension portion can pass through the second communication port and the first communication port and be inserted into the first housing, so that the air flow output by the volute can directly enter the first housing, reducing the occurrence of air leakage, and thus improving the heat exchange efficiency of the heat exchanger.

[0016] In an embodiment of the present application, a first pre-assembly portion and a first fixing portion are arranged on the installation support;

[0017] A first pre-assembly mating portion and a first fixing mating portion are arranged on the first housing;

[0018] Wherein, the first pre-assembly portion is detachably connected to the first pre-assembly mating portion, and the first fixing portion and the first fixing mating portion are fixedly connected by screws.

[0019] The above technical solution has the following advantages or beneficial effects: By using the screw fixing method, the connection reliability between the installation support and the first housing can be ensured to meet the requirements for the overall connection strength during use. By directly connecting the first pre-assembly portion and the first pre-assembly mating portion, it is convenient for on-site rapid assembly and combination, so that the installation support and the first housing are pre-assembled and positioned at the fixed installation position, improving the assembly efficiency.

[0020] In an embodiment of the present application, the first pre-assembly part is a first tongue provided on the installation support member, and the first tongue extends towards the direction of the first housing; the first pre-assembly mating part is a first slot formed on the first housing, and the first tongue is inserted into the first slot.

[0021] The above technical solution has the following advantages or beneficial effects: By adopting an insertion method, the first tongue can be accurately inserted into the first slot, which not only meets the pre-assembly requirements but also realizes the positioning of the relative positions between the installation support member and the first housing.

[0022] In an embodiment of the present application, the first pre-assembly part is a first overlapping plate provided on the installation support member, and the first overlapping plate is bent relative to the installation support member; the first pre-assembly mating part is a first overlapping surface formed on the first housing, and the first overlapping plate overlaps on the first overlapping surface.

[0023] The above technical solution has the following advantages or beneficial effects: By adopting an overlapping method, the first overlapping plate can be directly overlapped on the first housing, and the overlapping assembly is more convenient for on-site operation, thus facilitating the operator to quickly perform pre-assembly installation.

[0024] In an embodiment of the present application, a second fixing part is provided on the second housing.

[0025] A second fixing mating part is provided on the first housing.

[0026] The second fixing part and the second fixing mating part are fixedly connected by screws.

[0027] The above technical solution has the following advantages or beneficial effects: By using the screw fixing method, the connection reliability between the second housing and the first housing can be ensured to meet the requirements for the overall connection strength during use.

[0028] In an embodiment of the present application, a second pre-assembly part is further provided on the second housing.

[0029] A second pre-assembly mating part is provided on the installation support member.

[0030] Wherein, the second pre-assembly part and the second pre-assembly mating part are detachably connected together.

[0031] The above technical solution has the following advantages or beneficial effects: By directly connecting the second pre-assembly part and the second pre-assembly mating part, it is convenient for on-site rapid assembly and combination, so that the installation support member and the second housing are pre-assembled and the positioning at the fixed installation position is realized, thereby improving the assembly efficiency.

[0032] In an embodiment of the present application, the second pre-assembly part is a clamping groove provided on the inner wall of the second housing, and the second pre-assembly matching part is a flanging structure provided on the installation support member, and the flanging structure is clamped in the clamping groove;

[0033] The above technical solution has the following advantages or beneficial effects: By adopting the clamping method, the flanging structure can be used in cooperation with the clamping groove to enable the second housing to be directly clamped onto the installation support member during pre-assembly, thereby improving the convenience of on-site assembly.

[0034] In an embodiment of the present application, the second pre-assembly part is a second overlapping plate provided on the second housing, and the second overlapping plate extends to the outside of the second housing; the second pre-assembly matching part is a second overlapping surface formed on the installation support member, and the second overlapping plate overlaps on the second overlapping surface;

[0035] The above technical solution has the following advantages or beneficial effects: By adopting the overlapping method, the second overlapping plate can be directly overlapped on the installation support member, and the overlapping assembly is more convenient for on-site operation, thereby facilitating the operator to quickly pre-assemble and install.

[0036] In an embodiment of the present application, extension plates are respectively provided at both ends of the second housing, and the second fixing part is provided on the extension plate.

[0037] The above technical solution has the following advantages or beneficial effects: By providing the extension plate and arranging the second fixing part by using the extension plate, it can not only meet the requirements of screw connection and fixed installation, but also avoid the installation support member that has been fixedly installed on the first housing, thereby improving the assembly convenience.

[0038] In an embodiment of the present application, it further includes an electric control component;

[0039] The electric control component includes an electric control box and an electric control board, the electric control board is arranged in the electric control box, and the electric control box is arranged on the second housing;

[0040] The electric control board is at least electrically connected to the blower.

[0041] The above technical solution has the following advantages or beneficial effects: By integrating the electric control component in the second housing, the return air duct assembly is integrated with the electric control component, so that during assembly, there is no need to separately install the electric control component on-site, thereby improving the assembly efficiency.

[0042] In another embodiment of the present application, there is also provided an air conditioner indoor unit, including:

[0043] A heat exchange component, the heat exchange component is provided with a heat exchanger and an air outlet;

[0044] A blower assembly;

[0045] A return air duct assembly, the return air duct assembly is provided with a return air inlet;

[0046] Wherein, the fan assembly is configured to drive air flow to flow in from the return air inlet, exchange heat through the heat exchanger to form a heat exchange air flow, and then output from the air outlet;

[0047] In addition, the fan assembly is detachably arranged on the heat exchange assembly, the return air duct assembly is detachably arranged on the heat exchange assembly, and the return air duct assembly is also located in the return air cavity formed by the return air duct assembly.

[0048] Compared with the prior art, the advantages and positive effects of the present application are: by dividing the air conditioner indoor unit into three independent components, during the assembly process, the heat exchange assembly, the fan assembly and the return air duct assembly are assembled together. In this way, for the fan assembly, the overall weight of the fan assembly is relatively heavy, and the fan assembly is independent of the return air duct assembly, so that the overall size of the fan assembly is relatively small. Furthermore, it is convenient for the operator to assemble the fan assembly onto the heat exchange assembly on site, and then assemble the relatively large return air duct assembly onto the heat exchange assembly to cover the fan assembly to complete the installation, realizing convenient on-site assembly to improve the assembly convenience on the premise of meeting the modular design. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 One of the structural diagrams of an embodiment of the air conditioner indoor unit of the present application;

[0050] Figure 2 Two of the structural diagrams of an embodiment of the air conditioner indoor unit of the present application;

[0051] Figure 3 For Figure 1 The exploded view of the air conditioner indoor unit in

[0052] Figure 4 For Figure 1 The assembly diagram of the heat exchange assembly and the fan assembly in

[0053] Figure 5 For Figure 4 The partial enlarged view of area A in

[0054] Figure 6 For Figure 1 The structural diagram of the heat exchange assembly in

[0055] Figure 7 For Figure 6 The partial enlarged view of area B in

[0056] Figure 8 For Figure 1 The structural diagram of the fan assembly in

[0057] Figure 9 ForFigure 1 Structure diagram of the middle return air duct assembly;

[0058] Figure 10 For Figure 9 Partial enlarged view of area C in the middle;

[0059] Figure 11 For Figure 1 Structure diagram of the second housing in the middle;

[0060] Figure 12 This is the third structure diagram of an embodiment of the air conditioner indoor unit of the present application;

[0061] Figure 13 For Figure 12 Cross-sectional view taken along the D-D direction in the middle;

[0062] Figure 14 For Figure 13 Enlarged view of area E in the middle;

[0063] Figure 15 For Figure 12 Structure diagram of the electric control assembly in the middle;

[0064] Figure 16 For Figure 1 Assembly diagram of the water receiving tray and the heat exchanger in the middle;

[0065] Figure 17 For Figure 1 Structure diagram of the water receiving tray in the middle.

[0066] Reference numerals:

[0067] 1. Heat exchange assembly; 11. First housing; 12. Heat exchanger; 13. Water receiving tray; 14. Water level detector;

[0068] 111. Air outlet; 112. First communication port; 113. First pre-assembly and fitting part; 114. First fixing and fitting part; 115. Second fixing and fitting part; 116. First plug-in terminal;

[0069] 131. Drainage port; 132. First water retaining part; 133. Second water retaining part; 134. Installation groove; 135. Confluence groove; 136. First surface; 137. Second surface; 138. Third surface;

[0070] 2. Fan assembly; 21. Installation support; 22. Motor; 23. Volute; 24. Fan;

[0071] 211. Second communication port; 212. First pre-assembly part; 213. First fixing part; 214. Second pre-assembly and fitting part; 231. Extension part;

[0072] 3. Return air duct assembly; 31. Second housing; 32. Support plate; 33. Support frame;

[0073] 311, Air return opening; 312, Second fixing part; 313, Second pre - installation part; 314, Extension plate; 321, Heat dissipation opening;

[0074] 4, Electric control assembly; 41, Electric control box; 42, Electric control board; 43, Radiator; 44, Heat insulation space; 45, Electric heating component; 46, Temperature sensing component;

[0075] 411, Box body; 412, Maintenance cover; 413, Cable routing opening. Detailed implementation manners

[0076] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0077] In the present application, the air conditioner performs the 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.

[0078] The low - temperature and low - pressure refrigerant enters the compressor, and the compressor compresses it into a high - temperature and high - pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0079] The expansion valve expands the high - temperature and high - pressure liquid - phase refrigerant formed by condensation in the condenser into a low - pressure liquid - phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in the low - temperature and low - pressure state to the compressor. The evaporator can achieve the refrigeration effect by using the latent heat of evaporation of the refrigerant for heat exchange with the material to be cooled. In the whole cycle, the air conditioner can adjust the temperature of the indoor space.

[0080] The outdoor unit of the air conditioner refers to the part of the refrigeration cycle including the compressor and the outdoor heat exchanger. The indoor unit of the air conditioner includes the indoor heat exchanger, and the expansion valve can be provided in the indoor unit or the outdoor unit.

[0081] The indoor heat exchanger and the outdoor heat exchanger are used as condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in the heating mode. When the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in the cooling mode.

[0082] In an embodiment of the present application, an indoor air conditioner is provided, which includes components such as a housing, a heat exchanger 12, a water receiving tray 13, a fan, and an electric control box 41. Among them, the housing is provided with an air return opening 311 and an air outlet 111. The heat exchanger 12 is arranged between the air return opening 311 and the air outlet 111. The electric control board 42 in the electric control box 41 controls the start and operation of the fan. Under the driving action of the fan, air flows into the housing from the air return opening 311, exchanges heat through the heat exchanger 12, and is then output from the air outlet 111.

[0083] During the use of the heat exchanger 12, the 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 finally be discharged from the drain opening 131.

[0084] In some embodiments of the present application, the housing adopts a split design, that is, the housing includes a first housing 11 and a second housing 31. Correspondingly, the indoor air conditioner is divided into multiple independent modules, which will be specifically described with reference to the accompanying drawings.

[0085] As Figures 1 - 17 shown, the indoor air conditioner includes a heat exchange assembly 1, and the heat exchange assembly 1 includes a first housing 11 and a heat exchanger 12. The first housing 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. The heat exchanger 12 is configured to exchange heat with the flowing air to form a heat exchange air flow;

[0086] The indoor air conditioner includes a fan assembly 2. 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;

[0087] The indoor air conditioner includes a return air duct assembly 3. The return air duct assembly 3 includes a second housing 31. The second housing 31 is provided with an air return opening 311;

[0088] Among them, the mounting support 21 is arranged on the first housing 11. The volute 23 is communicated with the first communication port 112. The second housing 31 is arranged on the first housing 11, and the second housing 31 covers the fan assembly 2.

[0089] Specifically, the indoor air conditioner adopts a split modular design. The heat exchange assembly 1, the fan assembly 2, and the return air duct assembly 3 are independent of each other. During the assembly process, the mounting support 21 of the fan assembly 2 is fixedly installed on the first housing 11. Then, the second housing 31 of the return air duct assembly 3 is installed on the first housing 11 and covers the fan assembly 2.

[0090] For the fan assembly 2, it is of a split structure with the return air duct assembly 3. The motor 22 configured in the fan assembly 2 has a relatively large overall weight. However, the fan assembly 2 is separated from the second housing 31, thus making the overall volume of the fan assembly 2 relatively small. In this way, during the installation process, although the fan assembly 2 is heavy, its overall volume is small, and it will not be affected by a large volume during the installation process, thereby improving the installation convenience.

[0091] By dividing the air conditioner indoor unit into three independent components, during the assembly process, the heat exchange component 1, the fan assembly 2, and the return air duct assembly 3 are assembled together. In this case, for the fan assembly 2, the overall weight of the fan assembly 2 is relatively heavy, and the fan assembly 2 is independent of the return air duct assembly 3, so that the overall size of the fan assembly 2 is relatively small. Then, it is convenient for the operator to assemble the fan assembly 2 onto the heat exchange component 1 on-site, and then assemble the relatively large-volume return air duct assembly 3 onto the heat exchange component 1 to cover the fan assembly 2 to complete the installation, achieving convenient on-site assembly to improve the assembly convenience on the premise of meeting the modular design.

[0092] For the air conditioner indoor unit, during the transportation process, the heat exchange component 1, the fan assembly 2, and the return air duct assembly 3 can be assembled together at the factory stage for transportation. Or the heat exchange component 1, the fan assembly 2, and the return air duct assembly 3 can be independently packaged and transported respectively.

[0093] In one embodiment, as Figure 8 shown, a second communication port 211 is provided on the installation support 21, and the outlet of the volute 23 is communicated with the first communication port 112 through the second communication port 211.

[0094] Specifically, in order to facilitate the connection and assembly of the volute 23 of the fan with the first communication port 112 of the first housing 11, a second communication port 211 can also be provided on the installation support 21. During the assembly process, after the installation support 21 is assembled onto the first housing 11, the second communication port 211 corresponding to the first communication port 112 is arranged opposite to each other, so that the air output from the outlet of the volute 23 can smoothly enter the first housing 11.

[0095] By providing the left and right second communication ports 211 on the installation support 21, after the second communication port 211 is precisely assembled with the volute 23, when the installation support 21 is assembled onto the first housing 11, with the cooperation of the second communication port 211 and the first communication port 112, it is ensured that the volute 23 can smoothly convey the air flow into the first housing 11.

[0096] In another embodiment, as Figure 8 shown, an extension portion 231 is provided at the outlet of the volute 23, 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.

[0097] Specifically, for the volute 23, the outlet of the volute 23 is formed at the end of the extension 231. The volute 23 is fixedly installed on the mounting support 21, and the extension 231 of the volute 23 will pass through the second communication port 211. After the mounting support 21 is installed and fixed on the first housing 11, the extension 231 of the volute 23 will be inserted into the first communication port 112 to ensure that the air flow output by the volute 23 effectively enters the first housing 11.

[0098] By configuring the extension 231 on the volute 23, the extension 231 can pass through the second communication port 211 and the first communication port 112 and be inserted into the first housing 11, so that the air flow output by the volute 23 can directly enter the first housing 11, reducing the occurrence of air leakage and improving the heat exchange efficiency of the heat exchanger 12.

[0099] In another embodiment, in order to facilitate on-site rapid assembly, the following structural improvement design can be carried out for the assembly method between the first housing 11, the mounting support 21 and the second housing 31.

[0100] In some embodiments, as Figures 4 - 8 shown, in order to facilitate the quick and convenient assembly of the mounting support 21 to the first housing 11, a first pre-assembly part 212 and a first fixing part 213 are provided on the mounting support 21;

[0101] A first pre-assembly mating part 113 and a first fixing mating part 114 are provided on the first housing 11;

[0102] Wherein, the first pre-assembly part 212 is detachably connected to the first pre-assembly mating part 113, and the first fixing part 213 and the first fixing mating part 114 are fixedly connected by screws.

[0103] Specifically, during the assembly process, in order to improve the assembly convenience, for the mounting support 21 and the first housing 11, the first pre-assembly part 212 and the first pre-assembly mating part 113 can be connected without tools first to pre-assemble the mounting support 21 and the first housing 11 together. Then, the first fixing part 213 and the first fixing mating part 114 are fixedly connected by screws, so that the mounting support 21 is finally firmly and reliably installed on the first housing 11.

[0104] The first pre-assembly part 212 and the first pre-assembly mating part 113 can realize the pre-assembly of the mounting support 21 and the first housing 11, which is convenient for on-site assembly. The operator can first connect the mounting support 21 and the first housing 11, and then finally tighten them with screws. On the one hand, it improves the assembly convenience, and on the other hand, it can reduce the use of screws to improve the assembly efficiency.

[0105] The connection reliability between the installation support member 21 and the first housing 11 can be ensured by means of screw fixation, so as to meet the requirement for the overall connection strength during use. Through the direct connection between the first pre-assembly portion 212 and the first pre-assembly mating portion 113, the on-site rapid assembly and combination can be facilitated, so that the installation support member 21 and the first housing 11 are pre-assembled, and the positioning at the fixed installation position can be realized, thereby improving the assembly efficiency.

[0106] In one embodiment, the first pre-assembly portion 212 is a first tongue provided on the installation support member 21, and the first tongue extends towards the direction of the first housing 11; the first pre-assembly mating portion 113 is a first slot formed on the first housing 11, and the first tongue is inserted into the first slot.

[0107] Specifically, the first pre-assembly portion 212 adopts the structure of the first tongue, and through the first tongue, it can be inserted into the first slot formed on the first housing 11, so as to pre-assemble the installation support member 21 onto the first housing 11.

[0108] By adopting the insertion method, the first tongue can be accurately inserted into the first slot. While meeting the pre-assembly requirement, the positioning of the relative position between the installation support member 21 and the first housing 11 can be realized.

[0109] Alternatively, the first pre-assembly portion 212 is a first overlapping plate provided on the installation support member 21, and the first overlapping plate is bent relative to the installation support member 21; the first pre-assembly mating portion 113 is a first overlapping surface formed on the first housing 11, and the first overlapping plate overlaps on the first overlapping surface.

[0110] Specifically, the first pre-assembly portion 212 adopts the first overlapping plate. During assembly, through the overlapping of the first overlapping portion on the first overlapping surface formed on the first housing 11, the installation support member 21 is pre-assembled onto the first housing 11.

[0111] By adopting the overlapping method, the first overlapping plate can be directly overlapped on the first housing 11, and the overlapping assembly is more convenient for on-site operation, thus facilitating the operator to quickly pre-assemble and install.

[0112] 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;

[0113] A second fixing mating portion 115 is provided on the first housing 11;

[0114] The second fixing portion 312 and the second fixing mating portion 115 are fixedly connected by screws.

[0115] Specifically, during the installation of the second housing 31, the second fixing portion 312 and the second fixing and mating 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.

[0116] Moreover, the connection reliability between the second housing 31 and the first housing 11 can be ensured by the screw fixing method, so as to meet the requirement for the overall connection strength during use.

[0117] In one embodiment, as Figures 9 - 11 shown, a second pre-assembly portion 313 is further provided on the second housing 31;

[0118] A second pre-assembly and mating portion 214 is provided on the installation support member 21;

[0119] Wherein, the second pre-assembly portion 313 and the second pre-assembly and mating portion 214 are detachably connected together.

[0120] Specifically, in order to assemble the second housing 31 conveniently and quickly, a second pre-assembly portion 313 can be provided on the second housing 31. The second pre-assembly portion 313 can be directly connected to the second pre-assembly and mating portion 214 configured on the installation support member 21 that has been fixed on the first housing 11, so as to pre-assemble the second housing 31 onto the installation support member 21. Then, the second fixing portion 312 and the second fixing and mating portion 115 are fixed together by screws to realize the fixed installation of the second housing 31 on the first housing 11.

[0121] Moreover, through the direct connection between the second pre-assembly portion 313 and the second pre-assembly and mating portion 214, on-site rapid assembly and combination can be facilitated, so that the installation support member 21 and the second housing 31 are pre-assembled and the positioning at the fixed installation position is realized, thereby improving the assembly efficiency.

[0122] In a certain embodiment, the second pre-assembly portion 313 is a card slot provided on the inner wall of the second housing 31, and the second pre-assembly and mating portion 214 is a flanging structure provided on the installation support member 21, and the flanging structure is stuck in the card slot.

[0123] Specifically, the second pre-assembly portion 313 is a card slot formed in the second housing 31. Correspondingly, the second pre-assembly and mating portion 214 is a flanging structure on the installation support member 21. During the pre-assembly of the second housing 31, the second housing 31 is brought close to the installation support member 21, and the flanging structure can be inserted into the card slot to realize the pre-assembly of the second housing 31 onto the installation support member 21.

[0124] In the card-mounted manner, the flanging structure can be used in cooperation with the card slot so that the second housing 31 can be directly card-mounted onto the installation support member 21 during pre-installation, thereby improving the convenience of on-site assembly.

[0125] In one embodiment, the second pre-installation portion 313 is a second overlapping plate provided on the second housing 31, and the second overlapping plate extends to the outside of the second housing 31; the second pre-installation cooperation portion 214 is a second overlapping surface formed on the installation support member 21, and the second overlapping plate overlaps on the second overlapping surface.

[0126] Specifically, the second pre-installation portion 313 and the second pre-installation cooperation portion 214 can also adopt the overlapping manner, that is, the second overlapping plate directly overlaps on the second overlapping surface formed by the installation support member 21.

[0127] In the overlapping manner, by using the second overlapping plate, it can directly overlap on the installation support member 21, and the overlapping assembly is more convenient for on-site operation, thus facilitating the operator to quickly perform pre-assembly installation.

[0128] In one embodiment, as Figure 11 shown, extension plates 314 are respectively provided at both ends of the second housing 31, and the second fixing portion 312 is provided on the extension plates 314.

[0129] Specifically, in order to facilitate the fixed connection between the second housing 31 and the first housing 11, extension plates 314 are respectively provided on both sides of the second housing 31, and the second fixing portion 312 is formed on the extension plates 314. Since the second housing 31 does not need to bear the weight of the fan assembly 2, the requirement for the connection portion between the second housing 31 and the first housing 11 to bear gravity is relatively low, and the connection and fixation can be achieved by connecting the second fixing portion 312 provided on the extension plates 314 on both sides of the second housing 31 with the second fixing cooperation portion 115 on the first housing 11 to meet the installation requirements.

[0130] By providing the extension plates 314 and arranging the second fixing portion 312 by using the extension plates 314, it can not only meet the requirements of screw connection and fixed installation, but also avoid the installation support member 21 that has been fixedly installed on the first housing 11, thereby improving the assembly convenience.

[0131] In another embodiment, as Figures 13 - 15 shown, an electric control assembly 4 is further provided on the second housing 31. The electric control assembly 4 includes an electric control box 41 and an electric control board 42. The electric control board 42 is arranged in the electric control box 41, and the electric control box 41 is arranged on the second housing 31;

[0132] The electric control board 42 is at least electrically connected to the fan.

[0133] Specifically, to meet the installation requirements of the electronic control component 4, the electronic control component 4 can be installed on the second housing 31, and the end position of the second housing 31 is used to install the electronic control box 41 to meet the control requirements.

[0134] By integrating the electronic control component 4 into the second housing 31, the return air duct assembly 3 is integrated with the electronic control component 4. Therefore, during assembly, there is no need to install the electronic control component 4 separately on site, which improves the assembly efficiency.

[0135] 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.

[0136] Specifically, the fan assembly 2 is used as a separate module. The fan assembly 2 is separately installed and fixed on the first housing 11 to reduce the assembly difficulty caused by the too large volume of the fan assembly 2. After the fan assembly 2 is separately assembled to the first housing 11, the second housing 31 with a large volume and light weight is assembled to the first housing 11, thereby reducing the overall assembly difficulty.

[0137] In another embodiment of the present application, during the actual use of the water receiving tray 13, the water receiving tray 13 will collect the condensed water generated by the heat exchanger 12, and the accumulated condensed water in the water receiving tray 13 will be affected by the air flow on the leeward side of the heat exchanger 12 and cause water blowing.

[0138] To solve the above technical problems, the following structural improvements are made to the water receiving tray 13.

[0139] As Figures 16 - 17 shown, a drain port 131 is provided at one end of the water receiving tray 13. The water receiving tray 13 is arranged in the housing and is located below the heat exchanger 12. The fan assembly 2 is arranged on the windward side of the heat exchanger 12.

[0140] Wherein, the water receiving tray 13 is further provided with a first water retaining part 132 and a second water retaining part 133. The first water retaining part 132 and the second water retaining part 133 are located on the leeward side of the heat exchanger 12. The first water retaining part 132 is configured to buffer the water in the water receiving tray 13 that is blown by the air flow and flows towards the second water retaining part 133; the second water retaining part 133 is configured to block the water in the water receiving tray 13 that is blown by the air flow and flows towards the air outlet 111.

[0141] Specifically, a first water retaining part 132 and a second water retaining part 133 are arranged on the water receiving tray 13. The first water retaining part 132 is closer to the heat exchanger 12. Along the air flow direction, the first water retaining part 132 can buffer the condensed water flowing towards the edge of the water receiving tray 13, thereby playing a first blocking role for the condensed water. Further, for some condensed water that passes over the first water retaining part 132, under the action of the air flow, the condensed water continues to flow towards the edge of the water receiving tray 13. During the flow of the condensed water, the second water retaining part 133 will block the condensed water to play a second blocking role.

[0142] Specifically, the first water retaining part 132 is a concave structure, the second water retaining part 133 is a convex structure, and the first water retaining part 132 is located between the heat exchanger 12 and the second water retaining part 133.

[0143] Specifically, in order to enable the first water retaining part 132 to cache water, the first water retaining part 132 is in a concave structure in the water receiving tray 13. In this way, the water flowing through the first water retaining part 132 can be cached in the concave structure, and thus a large amount of water will not be blown away by the air flow.

[0144] For some water that passes over the first water retaining part 132 or overflows from the first water retaining part 132, under the action of the air flow, it will continue to flow towards the edge of the water receiving tray 13 close to the air outlet 111, and this part of the water will be blocked by the second water retaining part 133.

[0145] During use, through the double blocking of the first water retaining part 132 and the second water retaining part 133, the condensed water can be effectively reduced from being blown by the air flow on the leeward side of the heat exchanger 12 and forming blow - water output from the air outlet 111, thereby improving the use reliability.

[0146] By arranging the first water retaining part 132 and the second water retaining part 133 on the water receiving tray 13, both the first water retaining part 132 and the second water retaining part 133 are arranged on the leeward side of the heat exchanger 12. During use, the first water retaining part 132 can collect and cache the condensed water affected by the air flow and flowing on the leeward side of the heat exchanger 12 to provide a first protection against the blow - water generated by the air flow. Further, for the part of the condensed water that passes over the first water retaining part 132, it can be further blocked by the convex second water retaining part 133 to provide a second protection against the blow - water generated by the air flow. And since the first water retaining part 132 can effectively block most of the blow - water generated by the air flow, the overall height of the second water retaining part 133 can be effectively reduced. While meeting the requirement of reducing the influence of blow - water, the air outlet efficiency of the air outlet 111 can be improved.

[0147] In one embodiment, the first water retaining portion 132 and the second water retaining portion 133 are arranged to extend along the length direction of the heat exchanger 12 on the water receiving tray 13, and the first water retaining portion 132 is also communicated with the drain port 131.

[0148] Specifically, in order to improve the water retaining effect, the first water retaining portion 132 and the second water retaining portion 133 can be distributed to extend in the water receiving tray 13 along the length direction of the heat exchanger 12. The first water retaining portion 132 and the second water retaining portion 133 can perform water retaining treatment on the condensed water flowing down from various parts of the heat exchanger 12 in the water receiving tray 13 to improve the water retaining effect.

[0149] In another embodiment, an installation groove 134 is further provided on the water receiving tray 13, and the lower part of the heat exchanger 12 is arranged in the installation groove 134.

[0150] 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 part of the heat exchanger 12 in contact with 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 from the heat exchanger 12. The condensed water collected by the installation groove 134 flows to the drain port 131 of the water receiving tray 13 to be discharged through the drain port 131.

[0151] By providing the installation groove 134 in the water receiving tray 13, on the one hand, it can play a role in fixedly installing the heat exchanger 12, and on the other hand, it can also store and guide the condensed water generated by the heat exchanger 12 to reduce the amount of condensed water flowing to the leeward side of the heat exchanger 12, and can also effectively reduce the occurrence of water blowing phenomenon.

[0152] In a certain embodiment, a confluence groove 135 is further provided at the end of the water receiving tray 13 where the drain port 131 is provided. The confluence groove 135 is communicated with the drain port 131, and the first water retaining portion 132 and the installation groove 134 are respectively communicated with the confluence groove 135.

[0153] Specifically, the confluence groove 135 is arranged at one end of the water receiving tray 13 having the drain port 131, and the confluence groove 135 is directly communicated with the drain port 131. In this way, the condensed water flowing from the first water retaining portion 132 and the installation groove 134 will converge at the confluence groove 135 and finally be quickly discharged through the drain port 131.

[0154] The condensate is collected by arranging a confluence groove 135 at the end of the water receiving tray 13. The condensate in the first water retaining part 132 and the installation groove 134 flows centrally towards the direction of the confluence groove 135, enabling the condensate to flow to one side of the heat exchanger 12 as soon as possible. Since 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 condensate in the confluence groove 135 can also be quickly discharged from the drain port 131 to reduce the storage amount of condensate in the water receiving tray 13.

[0155] In one embodiment, as Figure 16 shown, a water level detector 14 is further arranged on the heat exchanger 12, and the water level detector 14 is arranged on the leeward side of the heat exchanger 12.

[0156] Specifically, the water level detector 14 can detect the water level in the water receiving tray 13. When the water level in the water receiving tray 13 is higher than the set water level of the water receiving tray 13 due to reasons such as blockage of the drain port 131 and the condensate cannot be discharged in time, the water level detector 14 will send a signal to the electronic control board 42 to perform corresponding operations such as alarm or shutdown through the electronic control board 42.

[0157] The above technical solution has the following advantages or beneficial effects: The setting of the water level detector 14 can realize the detection of the water level in the water receiving tray 13, and after the water level exceeds the set value, it triggers the indoor unit of the air conditioner to stop working to avoid a large amount of water overflow, thereby improving the use reliability.

[0158] In one embodiment, the water level detector 14 is arranged above the confluence groove 135, and the water level detector 14 is arranged between the first water retaining part 132 and the installation groove 134.

[0159] Specifically, the water in the water receiving tray 13 will flow to the confluence groove 135 and then flow into the drain port 131 through the confluence groove 135. Therefore, the water level detector 14 is arranged above the confluence groove 135, and the water level detector 14 judges the water level in the water receiving tray 13 by detecting the water level in the confluence groove 135.

[0160] By arranging the water level detector 14 above the confluence groove 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 groove 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 influence of the air flow on the water surface.

[0161] In a certain embodiment, the water level trigger height of the water level detector 14 is not higher than the highest water level height of the first water retaining part 132.

[0162] Specifically, the water level detector 14 detects the water level height of the water receiving tray 13. When the water level reaches the triggering height, the water level detector 14 sends a signal to the controller of the electronic control board 42, so that the controller in the electronic control board 42 controls the air conditioner indoor unit to execute corresponding instructions, such as shutdown and alarm.

[0163] During the installation process of the water level detector 14, by adjusting the position of the water level triggering height of the water level detector 14 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 triggering height of the adjusted water level detector 14, the controller can timely control the air conditioner indoor unit to execute corresponding instruction actions, such as shutdown, thereby reducing the serious water blowing phenomenon caused by the too high water level in the water receiving tray 13.

[0164] By setting the water level triggering height of the water level detector 14 to be not higher than the highest water level height of the first water retaining part 132, during use, it is possible to avoid serious water blowing caused by the continuous operation of the fan assembly 2 after the water level in the water receiving tray 13 is higher than the highest water level of the first water retaining part 132, so as to improve the user experience.

[0165] In one embodiment, as Figure 17 shown, a first surface 136, a second surface 137 and a third surface 138 are formed in the water receiving tray 13 and are arranged at intervals;

[0166] An installation groove 134 is formed between the first surface 136 and the second surface 137, a first water retaining part 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 part 133 and the first water retaining part 132;

[0167] Wherein, the first surface 136 and the second surface 137 are respectively inclined surfaces, and the inclined surfaces extend obliquely downward toward the drainage port 131.

[0168] 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 are arranged at intervals. Installation grooves 134 and a first water retaining part 132 will be correspondingly formed in the water receiving tray 13 between the surfaces arranged at intervals. In addition, the first surface 136, the second surface 137 and the third surface 138 all extend obliquely toward the drainage port 131 to ensure that the condensed water can flow toward the drainage port 131.

[0169] By arranging multiple inclined surfaces in the water receiving tray 13, on the one hand, the first water retaining part 132 and the installation groove 134 can be formed by the surfaces arranged at intervals, and on the other hand, the condensed water can flow smoothly toward the drainage port 131 under the action of gravity, so as to improve the drainage efficiency.

[0170] In an embodiment of the present application, in the case where the housing is designed in a split manner, in order to facilitate the connection between the electrical components in different housings and the electronic control board 42 in the electronic control box 41, the following structural improvement design is carried out.

[0171] As Figure 3 、 Figure 4 and Figure 15 shown, the air conditioner indoor unit includes a heat exchange module, the heat exchange module includes a heat exchange component 1 and electrical components, the heat exchange component 1 includes a first housing 11 and a heat exchanger 12, an air outlet 111 is provided on the first housing 11, a wiring portion is further provided outside the first housing 11, the heat exchanger 12 is configured to exchange heat with the flowing air to form a heat exchange air flow, and the electrical components are located in the first housing 11 and are electrically connected to the wiring portion.

[0172] The air conditioner indoor unit further includes a air supply module, the air supply module includes a second housing 31, a fan assembly 2 and an electronic control assembly 4, a return air outlet 311 is provided on the second housing 31, the fan assembly 2 is provided in the second housing 31, the fan assembly 2 is communicated with the first housing 11 through the first communication hole, the electronic control assembly 4 includes an electronic control box 41 and an electronic control board 42, the electronic control board 42 is provided in the electronic control box 41, the electronic control box 41 is provided in the second housing 31, and the electronic control board 42 is further electrically connected to the fan assembly 2;

[0173] Wherein, the second housing 31 is detachably provided on the first housing 11, and the wiring portion is configured to be electrically connected to the electronic control board 42 through a cable outside the first housing 11.

[0174] Specifically, the first housing 11 configured by the heat exchange module is provided with a wiring portion, and the wiring portion is located outside the first housing 11 to satisfy that the electrical components in the first housing 11 can be connected outside the first housing 11.

[0175] Specifically: a first plug-in terminal 116 is further provided on the first housing 11 as the wiring portion, the heat exchanger 12 is located between the air outlet 111 and the first communication port 112, the heat exchanger 12 is configured to exchange heat with the flowing air to form a heat exchange air flow, and the electrical components are located in the first housing 11 and are electrically connected to the first plug-in terminal 116.

[0176] Specifically, for the heat exchange module, a heat exchanger 12 and electrical components are provided in the first housing 11, and the electrical components in the first housing 11 are pre-connected to the first plug-in terminal 116 through wires inside. The head of the first plug-in terminal 116 will be exposed outside the first housing 11 to facilitate direct wiring outside the first housing 11.

[0177] For the air supply module, a wire routing opening 413 is provided on the electric control box 41. Among them, the second housing 31 is detachably provided on the first housing 11, the first plug-in terminal 116 is located in the wire routing opening 413, and the first plug-in terminal 116 is electrically connected to the electric control board 42 through a cable.

[0178] Specifically, during the assembly process, after the second housing 31 is assembled onto the first housing 11, the electrical components inside the first housing 11 can be electrically connected to the electric control board 42 through a cable outside the first housing 11. In this way, during the assembly process, there is no need to route wires inside the first housing 11 on-site. Instead, only by directly connecting the first plug-in terminal 116 and the electric control board 42 through a cable outside the first housing 11, the electrical connection between the electrical components in the first housing 11 and the electric control board 42 can be completed.

[0179] By providing a wiring part, such as the first plug-in terminal 116, outside the first housing 11 of the heat exchange module, the electrical components in the heat exchange module are pre-connected to the first plug-in terminal 116 through wires inside the first housing 11. When assembling on-site at the user's home, after the second housing 31 and the first housing 11 are assembled together, there is no need to lead wires from inside the first housing 11. Instead, a cable is directly connected between the first plug-in terminal 116 and the electric control board 42 outside the first housing 11 to complete the connection of the circuit, which is convenient for on-site assembly and improves the assembly convenience.

[0180] In one embodiment, a second plug-in terminal (not shown) is provided on the electric control board 42. First plug connectors are respectively provided at both ends of the cable. One of the first plug connectors is inserted on the first plug-in terminal 116, and the other first plug connector is inserted on the second plug-in terminal.

[0181] Specifically, in order to connect the cable conveniently and quickly, first plug connectors can be provided continuously on the cable without being separated. Correspondingly, a second plug-in terminal is provided on the electric control board 42. The first plug connector will be inserted between the corresponding first plug-in terminal 116 and the second plug-in terminal to facilitate the on-site quick plug-in assembly by the operator.

[0182] In one embodiment, a second plug connector is provided at one end of the cable. The second plug connector is inserted on the first plug-in terminal 116, and the other end of the cable is electrically connected to the electric control board 42.

[0183] Specifically, one end of the cable is connected to the first plug-in terminal 116 by using a second plug connector, and the other end of the cable can be connected in a conventional wire connection manner. For example, the end of the cable has a terminal piece to be installed on a terminal post or other structures of the electric control board 42.

[0184] The insertion joint is adopted to realize the insertion and cooperation with the insertion terminal, so that the cable insertion operation can be completed without tools during the insertion process, thereby improving the assembly convenience.

[0185] In another embodiment, as Figure 11 shown, a support plate 32 is further provided in the second housing 31, and the support plate 32 is arranged vertically;

[0186] 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.

[0187] Specifically, the support plate 32 is arranged in the second housing 31. Through the support plate 32, the fan assembly 2 and the electric control box 41 can be separated. The electric control box 41 will be installed on one side of the support plate 32.

[0188] By providing the support plate 32 in the second housing 31, on the one hand, the support plate 32 can improve the structural strength of the second housing 31 itself, and on the other hand, the support plate 32 can also separate two spaces in the second housing 31 to place the electric control box 41 and the fan assembly 2 respectively.

[0189] In some embodiments, as Figure 11 shown, a support frame 33 is further provided at one end of the second housing 31, and the support frame 33 is arranged outside the support plate 32;

[0190] The electric control box 41 is arranged on the support frame 33.

[0191] Specifically, a support frame 33 is further provided at the end of the second housing 31. The support frame 33 can meet the installation requirements for the fixed installation of the electric control box 41 on the second housing 31. For example, the electric control box 41 can be fixedly installed on the support frame 33 by screws.

[0192] By adding the support frame 33 at the end of the second housing 31, on the one hand, the support frame 33 can also enhance the structural strength of the second housing 31 at the end of the second housing 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 to the second housing 31.

[0193] In some embodiments, a heat dissipation port 321 is further provided on the support plate 32;

[0194] A radiator 43 is provided on the electric control box 41. The radiator 43 penetrates through the electric control box 41. The radiator 43 is in thermal conduction connection with 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.

[0195] Specifically, during normal operation, the electronic control box 41 is in a closed state. When the electronic control board 42 is powered on, heat is generated. Therefore, the heat sink 43 can absorb the heat of the electronic control board 42 and conduct it to the outside of the electronic control box 41. The part of the heat sink 43 located outside the electronic control box 41 will pass through the heat dissipation opening 321 and be arranged on one side of the fan assembly 2. The airflow generated during the operation of the fan assembly 2 is used to dissipate the heat of the heat sink 43 in a timely manner to ensure the stable operation of the electronic control board 42.

[0196] By providing the heat dissipation opening 321 on the support plate 32, the heat sink 43 can extend through the heat dissipation opening 321 to the area where the fan assembly 2 is located. The heat sink 43 uses the airflow generated by the fan assembly 2 for heat dissipation, so that the heat sink 43 can quickly release the heat generated by the electronic control board 42 in a timely and efficient manner to ensure the stable operation of the electronic control board 42.

[0197] In one embodiment, as Figure 15 shown, the electronic control box 41 includes a box body 411 and a maintenance cover 412. An inspection opening and the wire routing opening 413 are provided on the box body 411, and the maintenance cover 412 is detachably provided on the inspection opening;

[0198] The box body 411 is arranged in the second housing 31, and the maintenance cover 412 is arranged at one end of the second housing 31.

[0199] Specifically, for the convenience of 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 can cover the inspection opening provided on the box body 411. The box body 411 is arranged on the support frame 33. The inspection opening is arranged at the end of the second housing 31 and is covered by the maintenance cover 412. When maintenance is required, the maintenance cover 412 can be disassembled to open the inspection opening, and the electronic control board 42 and other components in the box body 411 can be maintained.

[0200] At the same time, the inspection opening is arranged on the end face of the box body 411, and the wire routing opening 413 is arranged on the side wall of the box body 411 opposite to the first housing 11. When the maintenance cover 412 is opened, the first plug-in terminal 116 is arranged at the wire routing opening 413, and thus the disassembly and assembly of the cable on the first plug-in terminal 116 can be completed from inside the box body 411 to improve the convenience of assembly and maintenance.

[0201] By providing a detachable maintenance cover 412 on the box body 411 of the electronic control box 41, on the one hand, the maintenance cover 412 can be opened during maintenance to facilitate the maintenance of the operator. On the other hand, by opening the maintenance cover 412, the wire routing opening 413 on the side wall of the box body 411 can also be exposed, and thus the cable assembly of the first plug-in terminal 116 can be completed during the assembly process to improve the convenience of assembly and maintenance.

[0202] In some embodiments, the specific manifestation entities of the electrical components installed in the first housing 11 can have various forms. For example, the electrical components include a temperature sensor, a water level detector 14, and / or a drainage pump.

[0203] Correspondingly, a plurality of the first plug terminals 116 are provided on the first housing 11, and the electrical components are connected to the corresponding first plug terminals 116.

[0204] Specifically, by configuring a plurality of first plug terminals 116 to meet the wiring requirements of electrical components of different functional types, on the one hand, unified wiring inside the first housing 11 is achieved, and on the other hand, it is also convenient for on-site operators to connect different first plug terminals 116 to the electronic control board 42 through different cables, improving the efficiency of on-site assembly.

[0205] In some embodiments, the air supply module can be designed as an integral modular structure, or the air supply module can also be designed as a split modular structure.

[0206] For example, when the air supply module is designed as an integral modular structure, a fan bracket is provided in the second housing 31, the motor 22 and the volute 23 are arranged on the fan bracket, and the fan 24 is arranged on the rotating shaft of the motor 22 and is located in the volute 23.

[0207] Specifically, by providing a fan bracket in the second housing 31, the installation requirements of the fan assembly 2 in the second housing 31 can be met, so that the fan assembly 2 is centrally installed in the second housing 31 to meet the requirements of the air supply module being designed as an integral modular structure.

[0208] 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, and the fan 24 is arranged on the rotating shaft of the motor 22 and is located in the volute 23;

[0209] The mounting support 21 is arranged on the first housing 11.

[0210] Specifically, when the air supply module is designed as a split modular structure, the fan assembly 2 can be independent of the second housing 31 and independently assembled and fixed on the first housing 11. For this reason, the fan assembly 2 is configured with a mounting support 21, and components such as the motor 22, the volute 23, and the fan 24 are centrally assembled onto the mounting support 21, and the fan assembly 2 is fixedly installed on the first housing 11 through the mounting support 21.

[0211] By providing the installation support member 21, the modular design of the fan assembly 2 can be satisfied, enabling components such as the motor 22, the volute 23, and the fan 24 to be centrally assembled onto the installation support member 21, so as to be independently assembled with the first housing 11 through the installation support member 21. In this way, the overall size of the fan assembly 2 is relatively small, facilitating on-site assembly of the fan assembly 2 by the operator onto the first housing 11.

[0212] In an embodiment of the present application, for the electric control assembly 4, since the electric control board 42 generates heat during operation and needs to dissipate heat with the help of the radiator 43, during the heat dissipation process of the radiator 43, the heat of the radiator 43 will be carried away by the air flow flowing back through the air return port 311. In the cooling mode, the temperature of the air flow at the air return port 311 is relatively low, and the air flow at the air return port 311 cools down the radiator 43, and the temperature of the radiator 43 may also drop below the dew point temperature.

[0213] Since the radiator 43 is thermally connected to the electric control board 42, when the temperature of the radiator 43 is lower than the dew point temperature, the temperature of the part of the electric control board 42 in thermal conduction with the radiator 43 inside the electric control box 41 will drop below the dew point temperature, thereby causing condensation on the surface of the electric control board 42.

[0214] To solve the problem of condensation on the electric control board 42 due to heat dissipation, the electric control assembly 4 includes an electric heating component 45, and the electric heating component 45 is provided on the radiator 43 to heat the radiator 43 by energizing the electric heating component 45.

[0215] As Figures 13 - 15 shown, the electric control assembly 4 includes a temperature sensing component 46, and the temperature sensing component 46 is provided on the radiator 43 to detect the temperature of the radiator 43 through the temperature sensing component 46.

[0216] The controller is configured to control the energization and de-energization of the electric heating component 45 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.

[0217] Specifically, during use, when the indoor unit of the air conditioner is in the cooling mode, the temperature of the return air flow at the air return port 311 is lower than the outside temperature and the humidity of the return air is also lower than the outside humidity. The return air flow will flow through the radiator 43 to dissipate heat from the radiator 43, so as to dissipate heat from the electric control board 42 inside the electric control box 41 through the radiator 43.

[0218] When the temperature of the return air is low such that the temperature of the radiator 43 is lower than the dew point temperature, heat conduction occurs between the radiator 43 and the electronic control board 42, resulting in the temperature of the portion of the electronic control board 42 in thermal contact with the radiator 43 being substantially the same as the temperature of the radiator 43. At this time, the temperature of the corresponding part of the electronic control board 42 will be lower than the dew point temperature, leading to condensation on the electronic control board 42.

[0219] 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 to control the power on and off of the electric heating component 45 through the controller. The temperature sensing component 46 transmits the detected temperature signal to the controller on the electronic control board 42, and the controller controls the power on and off of the electric heating component 45 according to the temperature signal detected by the temperature sensing component 46.

[0220] 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 powered on as needed 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 electronic control board 42 is not lower than the dew point temperature, thereby preventing condensation from occurring on the electronic control board 42 placed in the electronic control box 41.

[0221] By configuring the temperature sensing component 46 on the radiator 43, the temperature sensing component 46 can detect the temperature of the radiator 43. During use, in the cooling mode, the temperature of the air flow flowing back from the air return 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 powering on the electric heating component 45 to increase the overall temperature of the radiator 43, so that the temperature of the radiator 43 is higher than the dew point temperature. In this way, it is possible to prevent condensation from occurring on the surface of the electronic control board 42 thermally connected to the radiator 43 due to the temperature of the radiator 43 being lower than the dew point temperature, and to avoid electrical failures of the electronic control board 42 caused by condensation in the electronic control box 41, improving the operating reliability of the indoor unit of the air conditioner.

[0222] In one embodiment, the controller is configured to control the electric heating component 45 to be powered on 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 the set duration value.

[0223] Specifically, during the process of the controller detecting 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 does not immediately occur on the electronic control board 42, and 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.

[0224] To avoid frequent start-up and power-off of the electric heating component 45 by the controller, during the control process, after the temperature of the radiator 43 detected by the temperature sensing component 46 continuously remains lower than the dew point temperature and the maintained time exceeds the preset duration value in the pre-trial of the controller, the controller controls the electric heating component 45 to be powered on and started, so as to heat the radiator 43 through the electric heating component 45.

[0225] By delaying the power-on heating of the electric heating component 45 by the controller, it can be ensured that the electric heating component 45 is started after the temperature of the radiator 43 continuously remains lower than the dew point temperature for the set duration value. On the one hand, it can effectively ensure that the radiator 43 can be heated in time to avoid condensation on the electronic control board 42. On the other hand, it can avoid frequent start-up and power-off of the electric heating component 45 by the controller, so as to improve the use reliability of the electric heating component 45.

[0226] 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.

[0227] Specifically, after the temperature of the radiator 43 is lower than the dew point temperature and the electric heating component 45 is started, during the process of heating the radiator 43 by the electric heating component 45, when the temperature of the radiator 43 is higher than the dew point temperature, the electric heating component 45 can be turned off. Similarly, to avoid frequent start-up and stop of the electric heating component 45, after the temperature of the radiator 43 exceeds the dew point temperature and the temperature difference is greater than the preset temperature difference, the controller controls the electric heating component 45 to be powered off.

[0228] By controlling the temperature of the radiator 43 heated by the electric heating component 45 to be higher than the dew point temperature to the set temperature difference value, it can be ensured that after the electric heating component 45 is turned off, the radiator 43 itself has enough heat to exchange heat with the return air flow at the return air outlet 311, extending the duration for the radiator 43 to cool down below the dew point temperature again, so as to avoid frequent start-up and power-off of the electric heating component 45 by the controller, and improve the use reliability of the electric heating component 45.

[0229] In some embodiments, the controller is further configured to calculate the corresponding dew point temperature according to the ambient temperature where the air conditioner indoor unit is located.

[0230] Specifically, during the process of controlling the operation of the air conditioner indoor unit by the controller, for the dew point temperature, it will be affected by external environmental factors. Therefore, for different external environmental conditions, the actual dew point temperature of the radiator 43 will also change. Therefore, during the control process, the controller will also calculate the dew point temperature of the radiator 43 according to the ambient temperature where the air conditioner indoor unit is located, so as to more accurately control the power-on heating of the electric heating component 45.

[0231] For different environmental conditions, the dew point temperature can be calculated using conventional dew point temperature calculation methods, which are not restricted or elaborated here.

[0232] 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 electric 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; a heat insulation space 44 is formed between the electric control box 41 and the support plate 32, and the radiator 43 is inserted into the heat dissipation port 321.

[0233] Specifically, the support plate 32 is provided in the housing to separate the fan assembly 2 and the electric control box 41. At the same time, the electric control box 41 and the support plate 32 are spaced apart to form a heat insulation space 44, which can reduce the direct heat conduction of the return air flow to the electric control box 41, resulting in condensation due to the overall temperature reduction inside the electric control box 41.

[0234] To meet the 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, so as to ensure that during the operation of the fan assembly 2, the radiator 43 can rely on the air flow converging into the fan assembly 2 for heat dissipation treatment.

[0235] By providing the support plate 32 in the housing, on the one hand, the support plate 32 can separate the electric control box 41 and the fan assembly 2, and on the other hand, the heat insulation space 44 formed between the support plate 32 and the electric control box 41 can reduce the influence of the return air flow on the electric control box 41, thereby improving the use reliability.

[0236] In some embodiments, the radiator 43 is arranged on the inlet side of the volute 23; among them, at least part of the air flow flowing in from the return air port 311 flows through the radiator 43 and enters the inlet of the volute 23.

[0237] Specifically, after the radiator 43 penetrates and extends out from 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. During the process of the return air flow flowing back to the inlet of the volute 23, part of the return air flow will flow through the radiator 43 to perform good heat dissipation treatment on the radiator 43.

[0238] 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 to ensure that the radiator 43 has a good heat dissipation effect.

[0239] 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 radiator 43.

[0240] Specifically, in order to improve the heat insulation effect of the heat insulation space 44, a heat insulation layer can also be provided in the heat insulation space 44. The heat insulation layer is made of heat insulation materials, such as heat insulation cotton, heat insulation pads, etc. The heat insulation layer can play a more effective role in heat insulation, so as to further isolate the cold quantity of the return air flow from being conducted into the electronic control box 41 through the heat insulation layer.

[0241] By providing a heat insulation layer between the electronic control box 41 and the support plate 32, the heat insulation layer can better play the role of heat isolation, so as to reduce the cold quantity of the return air flow from being conducted into the electronic control box 41, reduce the temperature in the electronic control box 41 from dropping below the dew point temperature, and further reduce the generation of condensation in the electronic control box 41, so as to improve the use reliability.

[0242] In some embodiments of the present application, the controller is electrically connected to the fan assembly. During the process of controlling the operation of the fan assembly, the controller can adjust the rotation speed of the fan assembly in an equal static pressure manner to control the operation of the fan assembly, which is specifically described as follows.

[0243] In one embodiment, the controller is configured to: compare the actual power of the fan assembly with the equal static pressure power based on a preset equal static pressure curve, so as to adjust the rotation speed of the fan assembly;

[0244] Wherein, the preset equal static pressure curve is used to determine the preset target rotation speed of the fan assembly corresponding to the equal static pressure power.

[0245] Specifically, the air conditioner can preset the curve fitted by the power of the fan assembly and the rotation speed of the fan assembly corresponding to the equal static pressure of the air conditioner during the actual operation according to its own specifications and the influence of the actual installation conditions, that is, the preset equal static pressure curve.

[0246] During the actual operation process, the controller will adjust the rotation speed of the fan assembly based on the preset equal static pressure curve according to the actual power of the fan assembly. Based on the preset equal static pressure curve, when the actual power of the fan assembly is different from the equal static pressure power, by adjusting the rotation speed of the fan assembly, the actual power of the fan assembly is made the same as the equal static pressure power at the corresponding rotation speed.

[0247] By controlling the operation of the fan assembly according to the preset equal static pressure curve stored in the air conditioner controller, when the actual power corresponding to the rotation speed of the fan assembly is different from the equal static pressure power, the rotation speed of the fan assembly is adjusted so that the actual power corresponding to the adjusted rotation speed of the fan assembly matches the equal static pressure power. In this way, the static pressure in the air duct connecting the fan assembly can be maintained in a relatively constant state, so as to realize the equal static pressure control of the air conditioner, reduce the static pressure fluctuation of the air conditioner and reduce the wind noise to improve the user experience.

[0248] In some embodiments, the controller is configured to: control the fan assembly to operate at a preset target speed, and determine whether the actual power of the fan assembly at this time is equal to the corresponding equal-static-pressure power;

[0249] If not, adjust the speed of the fan assembly until the preset target speed matches the actual power of the fan assembly;

[0250] If so, control the speed of the fan assembly to remain at the preset target speed;

[0251] Wherein, the preset equal-static-pressure curve is used to determine the preset target speed of the fan assembly corresponding to the equal-static-pressure power.

[0252] Specifically, in the actual control process, according to the equal-static-pressure power corresponding to the preset target speed of the fan assembly matched by the preset equal-static-pressure curve, after the fan assembly starts at the set fan assembly power, the speed of the fan assembly runs at the preset target speed corresponding to the corresponding equal-static-pressure power. In this way, after the air conditioner is started, the air duct connected to the air conditioner can be in a constant static pressure state.

[0253] Moreover, during the operation, as the user's air volume changes, the static pressure in the air duct will change. During this process, the actual power of the fan assembly will change accordingly, and further cause the static pressure in the air duct to change. When it is determined that the actual power of the fan assembly at this time is not the same as the equal-static-pressure power corresponding to the actual speed of the fan assembly, the controller adjusts the speed of the fan assembly, based on the preset target speed corresponding to the equal-static-pressure power matched in the preset equal-static-pressure curve, so that the actual speed of the fan assembly is adjusted to the corresponding preset target speed.

[0254] For the control process based on the equal-static-pressure curve, a corresponding formula can be derived according to the fitted equal-static-pressure curve, and the controller calculates the speed of the fan assembly according to the derived formula. Since the specific process of deriving the formula of the equal-static-pressure curve varies according to the specifications and usage scenarios of different air conditioners.

[0255] The acquisition of the equal-static-pressure curve is carried out by means of finite measurements. Under the condition that the equal static pressure is maintained in the air duct at different speeds of the fan assembly, record the power of the fan assembly corresponding to different speeds of the fan assembly, and finally obtain the equal-static-pressure curve, so as to derive the corresponding formula. Here, the acquisition of the equal-static-pressure curve and the derivation of the formula are not restricted and elaborated.

[0256] By controlling the operation of the fan assembly according to a preset equal static pressure curve stored in the air conditioner controller, during the process of the fan assembly running at a preset target speed, if the actual power of the fan assembly is different from the corresponding equal static pressure power, the speed of the fan assembly is adjusted so that the actual power corresponding to the adjusted speed of the fan assembly matches the equal static pressure power. In this way, the static pressure in the air duct connecting the fan assembly can be maintained in a relatively constant state to achieve equal static pressure control of the air conditioner, reduce the static pressure fluctuation of the air conditioner and lower the wind noise to improve the user experience.

[0257] In one embodiment, the controller is configured to: when the power of the fan assembly is the equal static pressure power, determine the preset target speed of the fan assembly based on the preset equal static pressure curve, and control the fan assembly to run at the preset target speed.

[0258] Specifically, during the startup phase of the air conditioner, the fan assembly speed at startup of the fan assembly is determined according to the actual power at startup of the fan assembly based on the preset equal static pressure curve, so as to ensure that after the fan assembly runs during the startup phase, the static pressure in the air duct reaches the operating requirements of equal static pressure.

[0259] During the startup phase of the air conditioner, based on the power of the fan assembly at startup, the preset target speed matching the corresponding equal static pressure power is determined based on the equal static pressure curve, and then the fan assembly runs at the corresponding preset target speed under the power of the fan assembly at startup, ensuring that the static pressure in the air duct is constant during the startup phase.

[0260] In some other embodiments, the controller is configured to: control the fan assembly to run at a preset target speed, and determine whether the actual power of the fan assembly at this time is equal to the corresponding equal static pressure power;

[0261] If not, adjust the speed of the fan assembly until the preset target speed matches the actual power of the fan assembly;

[0262] If so, control the speed of the fan assembly to remain at the preset target speed;

[0263] Wherein, the equal static pressure power corresponding to the preset target speed of the fan assembly is obtained by querying a preset equal static pressure table.

[0264] Specifically, in the actual control process, a table lookup method can also be used to match the preset target speed corresponding to the equal static pressure power. Among them, the preset equal static pressure table is a data table preset according to the self-specification of the air conditioner and the influence of the actual installation conditions, which pre-sets the corresponding data of the power of the fan assembly and the speed of the fan assembly of the air conditioner under equal static pressure during the actual operation of the air conditioner, that is, the preset equal static pressure table.

[0265] During the actual operation, the controller will adjust the speed of the fan assembly based on a preset equal static pressure table according to the actual power of the fan assembly. Based on the preset equal static pressure table, when the actual power of the fan assembly is different from the equal static pressure power, the speed of the fan assembly is adjusted so that the actual power of the fan assembly is the same as the equal static pressure power at the corresponding speed.

[0266] By controlling the operation of the fan assembly according to the preset equal static pressure table stored in the air conditioner controller, during the process of the fan assembly running at the preset target speed, if the actual power of the fan assembly is different from the corresponding equal static pressure power, the speed of the fan assembly is adjusted so that the actual power corresponding to the adjusted speed of the fan assembly matches the equal static pressure power. In this way, the static pressure in the air duct connecting the fan assembly can be maintained in a relatively constant state to achieve the equal static pressure control of the air conditioner, reduce the static pressure fluctuation of the air conditioner and lower the wind noise to improve the user experience.

[0267] In one embodiment, the controller is configured to: when the power of the fan assembly is the equal static pressure power, query the preset equal static pressure table to obtain the preset target speed of the fan assembly, and control the fan assembly to run at the preset target speed.

[0268] Specifically, during the startup stage of the air conditioner, according to the actual power of the fan assembly at startup and the preset equal static pressure table, the speed of the fan assembly at startup is determined to ensure that after the fan assembly runs during the startup stage, the static pressure in the air duct reaches the operation requirements of the equal static pressure.

[0269] During the startup stage of the air conditioner, based on the power of the fan assembly at startup and the preset equal static pressure table, the preset target speed matching the corresponding equal static pressure power is determined, so that the fan assembly runs at the corresponding preset target speed at the power of the fan assembly at startup, ensuring that the static pressure in the air duct is constant during the startup stage.

[0270] In one embodiment, the actual power of the fan assembly is PT, the actual speed of the fan assembly is NT, and the equal static pressure power corresponding to the actual speed of the fan assembly is P0;

[0271] The controller is configured to:

[0272] When |PT - P0| / P0 ≥ A%, and the duration is greater than the preset duration;

[0273] Take the preset target speed corresponding to the actual power P0 of the fan assembly as the target value for adjusting the speed of the fan assembly to adjust the speed of the fan assembly.

[0274] Specifically, during the operation of the air conditioner, due to the change in the air intake volume of different rooms caused by user operations, the air pressure in the air duct connected to the air conditioner will also change. At the same time, the actual power of the fan assembly will change correspondingly. In this case, the actual power of the fan assembly will be different from the equal static pressure power corresponding to the current speed of the fan assembly, which will cause a large change in the pressure in the air duct connected to the air conditioner. At this time, according to the actual power of the fan assembly, a preset equal static pressure curve or a preset equal static pressure table is used to obtain the adjusted speed value of the fan assembly to adjust the speed of the fan assembly.

[0275] In the actual control process, the actual power of the fan assembly will fluctuate. Therefore, in the equal static pressure control process, the actual power cannot always be exactly the same as the equal static pressure power. After the difference between the actual power and the equal static pressure power reaches the preset power difference, the speed of the fan assembly is adjusted.

[0276] After it is detected that the actual power of the fan assembly is different from the equal static pressure power at the corresponding speed, after the duration when the actual power is different from the equal static pressure power is greater than the preset duration, the speed of the fan assembly is adjusted to improve the accuracy of the fan assembly adjustment and the control accuracy. By comparing whether the difference between the actual power and the equal static pressure power exceeds the preset power difference, and starting the adjustment of the fan assembly speed when the difference exceeds the preset power difference, this can avoid frequent adjustment of the fan assembly speed to simplify the control process.

[0277] In one embodiment, the controller is configured to:

[0278] When (PT - P0) / P0 ≥ A%, and the duration is greater than the preset duration;

[0279] Increase the speed of the fan assembly until it is consistent with the preset target speed corresponding to the actual power P0 of the fan assembly.

[0280] Specifically, when the fan assembly needs to be adjusted, if the actual power of the fan assembly is greater than the equal static pressure power corresponding to the current speed and the duration is approximately the preset duration, the speed of the fan assembly can be adjusted. At this time, since the actual power of the fan assembly increases, the speed of the fan assembly will be correspondingly increased, so that the speed of the fan assembly is adjusted to the preset target speed matching the equal static pressure power of the actual power value.

[0281] When the actual power of the fan assembly is greater than the equal static pressure power, the speed of the fan assembly is increased so that the speed of the fan assembly is increased until the equal static pressure power is the preset target speed corresponding to the actual power of the fan assembly to improve the control accuracy of the fan assembly.

[0282] In one embodiment, the controller is configured to:

[0283] When (P0 - PT) / P0 ≥ A% and the duration is greater than a preset duration;

[0284] Reduce the rotational speed of the fan assembly until it is consistent with the preset target rotational speed corresponding to the actual power P0 of the fan assembly.

[0285] Specifically, when the fan assembly needs to be adjusted, if the actual power of the fan assembly is less than the equal static pressure power corresponding to the current rotational speed and the duration is approximately the preset duration, then the rotational speed of the fan assembly can be adjusted. At this time, since the actual power of the fan assembly decreases, the rotational speed of the fan assembly will be correspondingly reduced, so that the rotational speed of the fan assembly is adjusted to the preset target rotational speed matching the equal static pressure power of the actual power value.

[0286] When the actual power of the fan assembly is less than the equal static pressure power, reduce the rotational speed of the fan assembly to lower the rotational speed of the fan assembly until the equal static pressure power is the preset target rotational speed corresponding to the actual power of the fan assembly, so as to improve the control accuracy of the fan assembly.

[0287] In one embodiment, the controller is configured to:

[0288] When |PT - P0| / P0 ≥ A% and the duration is not greater than the preset duration;

[0289] Control the rotational speed of the fan assembly to remain at the preset target rotational speed.

[0290] Specifically, during the operation of the fan assembly, when users in different rooms adjust the air supply volume in the rooms, the actual power of the fan assembly changes. However, the duration after the actual power of the fan assembly changes is short. At this time, there is no need to adjust the rotational speed of the fan assembly. In this way, frequent adjustment of the rotational speed of the fan assembly can be avoided to simplify the control process.

[0291] In one embodiment, the controller is configured to:

[0292] When the actual power of the fan assembly is different from the corresponding equal static pressure power (i.e., |PT - P0| / P0 ≥ A%) and the duration is greater than the preset duration;

[0293] After continuously adjusting the rotational speed of the fan assembly N times and the actual power of the fan exceeds the value range of the equal static pressure power, the air conditioner emits an alarm signal.

[0294] Specifically, during the process of adjusting the rotational speed of the fan assembly, after the rotational speed of the fan assembly is adjusted, the actual power changes again and cannot match the isostatic pressure power. At this time, the controller will continue to adjust the rotational speed of the fan assembly. If the controller frequently adjusts the rotational speed of the fan assembly but still cannot make the actual power the same as the isostatic pressure power corresponding to the adjusted rotational speed, it indicates that there is a fault inside the air conditioner or the air duct connected to the air conditioner.

[0295] Therefore, during the process of adjusting the fan assembly through the controller, if the actual power of the fan still exceeds the value range of the isostatic pressure power and the percentage of the power difference is greater than or equal to a% when it is the same as the isostatic pressure power corresponding to the adjusted rotational speed, it is determined that the air duct system connected to the air conditioner has a fault (rupture or air leakage). At this time, an alarm prompt is given to reduce the damage of components caused by continuing to operate the air conditioner, thereby improving the use reliability.

[0296] During the process of adjusting the rotational speed of the fan assembly, if after multiple adjustments, the actual power of the fan assembly still cannot be the same as the isostatic pressure power corresponding to the adjusted rotational speed, it is determined that the air conditioner has a fault. At this time, an alarm prompt is given to reduce the damage of components caused by continuing to operate the air conditioner, thereby improving the use reliability.

Claims

1. An air conditioner indoor unit, characterized in that, Comprising: A heat exchange assembly, the heat exchange assembly comprising: A first housing, an air outlet and a first communication port being provided on the first housing; A heat exchanger, the heat exchanger being located between the air outlet and the first communication port, and the heat exchanger being configured to exchange heat with the flowing air stream to form a heat exchange air stream; A return air duct assembly, the return air duct assembly comprising: A second housing, a return air inlet being provided on the second housing; A fan assembly, the fan assembly comprising: A motor; A volute; A fan, the fan being provided on the rotating shaft of the motor, and the fan being located in the volute; Wherein, the fan assembly further comprises a mounting support member; the motor and the volute are provided on the mounting support member, the mounting support member is provided on the first housing, the volute communicates with the first communication port, the second housing is provided on the first housing, and the second housing covers the fan assembly.

2. The air conditioner indoor unit according to claim 1, characterized in that, A second communication port is provided on the mounting support member, and the outlet of the volute communicates with the first communication port through the second communication port.

3. The air conditioner indoor unit according to claim 2, characterized in that, An extension portion is provided at the outlet of the volute, and the extension portion sequentially passes through the second communication port and the first communication port and extends into the first housing.

4. The air conditioner indoor unit according to claim 1, characterized in that A first pre-assembly portion and a first fixing portion are provided on the mounting support member; A first pre-assembly mating portion and a first fixing mating portion are provided on the first housing; Wherein, the first pre-assembly portion and the first pre-assembly mating portion are detachably connected together, and the first fixing portion and the first fixing mating portion are fixedly connected by screws.

5. The air conditioner indoor unit according to claim 4, characterized in that The first pre-assembly portion is a first tongue provided on the mounting support member, and the first tongue extends towards the first housing; the first pre-assembly mating portion is a first slot formed on the first housing, and the first tongue is inserted into the first slot; Or, the first pre-assembly portion is a first overlapping plate provided on the mounting support member, and the first overlapping plate is bent relative to the mounting support member; the first pre-assembly mating portion is a first overlapping surface formed on the first housing, and the first overlapping plate overlaps on the first overlapping surface.

6. The indoor air conditioner according to claim 1, characterized in that, A second fixing portion is provided on the second housing; A second fixing mating portion is provided on the first housing; The second fixing portion and the second fixing mating portion are fixedly connected by screws.

7. The air conditioner indoor unit according to claim 6, characterized in that, A second pre-assembly portion is further provided on the second housing; A second pre-assembly mating portion is provided on the mounting support member; Wherein, the second pre-assembly portion and the second pre-assembly mating portion are detachably connected together.

8. The air conditioner indoor unit according to claim 7, characterized in that, The second pre-assembly portion is a card slot provided on the inner wall of the second housing, and the second pre-assembly mating portion is a flanging structure provided on the mounting support member, and the flanging structure is stuck in the card slot; Or, the second pre-assembly portion is a second overlapping plate provided on the second housing, and the second overlapping plate extends out of the second housing; the second pre-assembly mating portion is a second overlapping surface formed on the mounting support member, and the second overlapping plate overlaps on the second overlapping surface; Or, extension plates are respectively provided at both ends of the second housing, and the second fixing portion is provided on the extension plate.

9. The indoor air conditioner according to any one of claims 1-8, characterized in that, It further includes an electric control component, and the electric control component includes: An electric control box; An electric control board, and the electric control board is arranged in the electric control box; The electric control board is at least electrically connected to the blower, and the electric control box is arranged on the second housing.

10. An air conditioner indoor unit, characterized in that, It includes: A heat exchange component, and the heat exchange component is provided with a heat exchanger and an air outlet; A return air duct component, and the return air duct component is provided with a return air inlet, and the return air duct component is detachably arranged on the heat exchange component; A blower assembly, and the blower assembly is configured to drive air to flow in from the return air inlet, form a heat exchange air flow after heat exchange via the heat exchanger, and then output from the air outlet; Wherein, the blower assembly includes: An installation support member, and the installation support member is configured to detachably arrange the blower assembly on the heat exchange component; The blower assembly is also located in the return air duct component.

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