Indoor unit of air conditioner

Abstract

The utility model discloses an air conditioner indoor unit which comprises a shell, an indoor air outlet, an indoor air return opening, an outdoor air outlet and an outdoor air inlet are formed in the shell, a heat exchange cavity is further formed in the shell, and the indoor air outlet is communicated with the heat exchange cavity; the total heat exchange core body is provided with an exhaust air heat exchange flow channel and a fresh air heat exchange flow channel; the heat exchanger is arranged in the heat exchange cavity; the heat exchange cavity is configured to be selectively communicated with the air exhaust heat exchange flow channel, and in the state that the heat exchange cavity is communicated with the air exhaust heat exchange flow channel, part of airflow subjected to heat exchange through the heat exchanger is conveyed into the air exhaust heat exchange flow channel. The heat dissipation efficiency of the electrical box is improved, and the operation reliability of equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to an air treatment equipment technical field especially relates to a kind of air conditioner indoor units. BACKGROUND

[0002] Air conditioner is the electric appliance commonly used in people's daily life, along with the requirement of user to air quality, air conditioning with fresh air function is gradually popularized and used too.The air conditioner with fresh air function is usually additionally provided with full heat exchange core, and the full heat exchange core is used to meet the air exchange between indoor and outdoor.

[0003] Chinese patent announcement No.CN220250164U discloses a kind of fresh air air conditioner, the inside of shell is provided with full heat exchanger to meet the heat exchange between outdoor air inlet and indoor exhaust air, to realize the function of replacing fresh air.Indoor air supply port is arranged with air inlet heat exchanger to carry out fresh air temperature adjustment for adjusting the temperature in room.Usually, fresh air through full heat exchanger is dehumidified by air inlet heat exchanger in actual use process.The temperature of fresh air is reduced after passing through air inlet heat exchanger, and the moisture in fresh air is condensed to form condensate to realize dehumidification process on air inlet heat exchanger.However, because the time of air inlet heat exchanger and fresh air heat exchange is short, the temperature of fresh air is reduced after passing through air inlet heat exchanger, but the humidity of airflow after heat exchange is still large, resulting in low dehumidification efficiency.

[0004] Therefore, how to design an air conditioner with improved dehumidification efficiency is the technical problem to be solved by the utility model.

[0005] The above information disclosed in the background is only used to increase the understanding of the background of the application, so it can include prior art known by those skilled in the art. UTILITY MODEL CONTENT

[0006] In view of the problems pointed out in the background, the utility model provides an air conditioner indoor unit, which realizes improving the heat dissipation efficiency of the electric appliance box to improve the operation reliability of the equipment.

[0007] To achieve the above utility model purposes, the utility model adopts the following technical solutions:

[0008] In some embodiments of the application, an air conditioner indoor unit is provided, comprising: a shell, the shell is provided with indoor air outlet, indoor return air inlet, outdoor air outlet and outdoor air inlet, the shell is further provided with heat exchange cavity, the indoor air outlet is communicated with the heat exchange cavity;

[0009] A total heat exchange core is provided with an exhaust air heat exchange flow channel and a fresh air heat exchange flow channel, which are in heat conduction with each other; the total heat exchange core is arranged in the shell, a fresh air channel is formed between the indoor air outlet, the heat exchange cavity, the fresh air heat exchange flow channel and the outdoor air inlet, and an exhaust air channel is formed between the indoor return air inlet, the exhaust air heat exchange flow channel and the outdoor air outlet;

[0010] A heat exchanger is arranged in the heat exchange cavity and is configured to perform heat exchange treatment on the air flow entering the heat exchange cavity;

[0011] Two fan assemblies are arranged in the fresh air channel and the exhaust air channel respectively;

[0012] The heat exchange cavity is configured to selectively communicate with the exhaust air heat exchange flow channel and, in the state of communicating with the exhaust air heat exchange flow channel, to deliver part of the air flow after heat exchange by the heat exchanger to the exhaust air heat exchange flow channel.

[0013] Compared with the prior art, the air flow after heat exchange by the heat exchanger is distributed, part of the air flow after heat exchange is delivered to the exhaust air heat exchange flow channel in the dehumidification mode, so that the temperature of the air flow in the exhaust air heat exchange flow channel is lower, and the air flow in the exhaust air heat exchange flow channel and the air flow in the fresh air heat exchange flow channel can perform heat conduction, the fresh air input by the outdoor air inlet can be pre-cooled and dehumidified by the total heat exchange core, the humidity of the air flow output by the fresh air heat exchange flow channel is preliminarily reduced, and then when the air flow output by the fresh air heat exchange flow channel flows through the heat exchanger for condensation and dehumidification, the humidity of the air flow can be more efficiently reduced, the two-stage dehumidification treatment is realized by the total heat exchange core and the heat exchanger, and the dehumidification efficiency of the air conditioner indoor unit is improved.

[0014] Another embodiment of the present application also provides an air conditioner indoor unit, comprising:

[0015] A shell is provided with an indoor air outlet, an indoor return air inlet, an outdoor air outlet and an outdoor air inlet, and a heat exchange cavity is further arranged in the shell, and the indoor air outlet communicates with the heat exchange cavity;

[0016] A total heat exchange core is provided with an exhaust air heat exchange flow channel and a fresh air heat exchange flow channel, which are in heat conduction with each other; the total heat exchange core is arranged in the shell, a fresh air channel is formed between the indoor air outlet, the heat exchange cavity, the fresh air heat exchange flow channel and the outdoor air inlet, and an exhaust air channel is formed between the indoor return air inlet, the exhaust air heat exchange flow channel and the outdoor air outlet;

[0017] a heat exchanger disposed in the heat exchange cavity, the heat exchanger being configured to perform heat exchange treatment on the air flow entering into the heat exchange cavity;

[0018] two fan assemblies, one of the fan assemblies being disposed in the fresh air passage, and the other of the fan assemblies being disposed in the exhaust air passage;

[0019] the air conditioner indoor unit is configured to, in a first dehumidification mode, output the air flow input from the outdoor air inlet from the indoor air outlet via the fresh air heat exchange flow channel and the heat exchanger in sequence;

[0020] the air conditioner indoor unit is configured to, in a second dehumidification mode, output part of the air flow after heat exchange from the indoor air outlet, and output the remaining part of the air flow after heat exchange from the exhaust air heat exchange flow channel.

[0021] Compared with the prior art, the advantages and positive effects of the air conditioner indoor unit are as follows: the air flow after heat exchange of the heat exchanger is distributed, part of the air flow after heat exchange is transported to the exhaust air heat exchange flow channel in the dehumidification mode, so that the temperature of the air flow in the exhaust air heat exchange flow channel is lower, and the air flow in the exhaust air heat exchange flow channel and the air flow in the fresh air heat exchange flow channel can be pre-cooled and dehumidified by the total heat exchange core during heat conduction, so that the humidity of the air flow output from the fresh air heat exchange flow channel is preliminarily reduced, and then the humidity of the air flow output from the fresh air heat exchange flow channel can be more efficiently reduced when the air flow flows through the heat exchanger for condensation and dehumidification, so that two-stage dehumidification treatment is realized by the total heat exchange core and the heat exchanger, and the dehumidification efficiency of the air conditioner indoor unit is improved.

[0022] In an embodiment of the present application, a partition plate is arranged in the shell, the partition plate surrounds the inner side of the indoor air outlet, and the partition plate divides the shell to form the heat exchange cavity;

[0023] The partition plate is provided with a first air vent and a second air vent;

[0024] The first air vent is arranged on the windward side of the heat exchanger and is configured to transport the air flow to the windward surface of the heat exchanger;

[0025] The second air vent is arranged on the leeward side of the heat exchanger and is configured to transport the air flow after heat exchange of the heat exchanger to the exhaust air heat exchange flow channel.

[0026] The technical scheme has the following advantages or beneficial effects: the first air vent provided on the partition plate can meet the requirement that the airflow output by the fresh air heat exchange channel enters the heat exchange cavity to be heat exchanged with the heat exchanger, and the second air vent can meet the requirement that the airflow after being heat exchanged with the heat exchanger in the heat exchange cavity is transported to the exhaust air heat exchange channel, so that the air path can be conveniently connected to meet the airflow flow requirement in different situations.

[0027] In an embodiment of the present application, a first air door is arranged at the second air vent and configured to open and close the second air vent.

[0028] The technical scheme has the following advantages or beneficial effects: the first air door is arranged to control the opening and closing of the second air vent, so that when pre-dehumidification is required to be performed by the total heat exchange core, the airflow after being heat exchanged with the heat exchanger in the heat exchange cavity is controlled to flow into the total heat exchange core by opening the first air door, so as to control the pre-dehumidification operation and improve the reliability of the control.

[0029] In an embodiment of the present application, a first partition plate is arranged in the shell and connected between the total heat exchange core and the partition plate.

[0030] One end of the first partition plate separates the exhaust air heat exchange channel and the fresh air heat exchange channel from each other, and the other end of the first partition plate separates the first air vent and the second air vent from each other.

[0031] The technical scheme has the following advantages or beneficial effects: the first partition plate is arranged between the partition plate and the total heat exchange core, the inlet of the exhaust air heat exchange channel and the outlet of the fresh air heat exchange channel are separated by the first partition plate, so that the fresh air channel and the exhaust air channel are separated from each other, and the indoor exhaust air and the outdoor fresh air are independent of each other.

[0032] In an embodiment of the present application, a third air vent is arranged on the first partition plate and communicates the fresh air channel and the exhaust air channel.

[0033] A second air door is further arranged in the third air vent and configured to open and close the third air vent.

[0034] The technical scheme has the following advantages or beneficial effects: the second air door is arranged to control the opening and closing of the third air vent, so that the indoor return air vent and the indoor outlet air vent can be communicated with each other, and when the indoor temperature does not reach the set temperature value, the indoor return air vent and the indoor outlet air vent are communicated by opening the second air door, so as to quickly adjust the indoor temperature, thereby improving the user experience.

[0035] In an embodiment of the present application, the shell is further provided with a second partition plate, one end of the second partition plate is connected to the total heat exchange core, and the second partition plate separates the two fan assemblies.

[0036] The above technical solution has the following advantages or beneficial effects: by providing the second partition plate in the shell, the installation requirement of separating the two fan assemblies can be met, the fresh air channel and the exhaust air channel are separated from each other, and the indoor exhaust air and the outdoor intake air are independent of each other.

[0037] In an embodiment of the present application, the shell is further provided with an air path switching component, which is configured to selectively communicate the exhaust air heat exchange flow channel and the heat exchange cavity.

[0038] The above technical solution has the following advantages or beneficial effects: by providing the air path switching component in the shell, the air flow path in the shell is switched, when pre-dehumidification treatment is required through the total heat exchange core, the air path switching component communicates the exhaust air heat exchange flow channel and the heat exchange cavity, thereby realizing control of the air flow in the heat exchange cavity after heat exchange by the heat exchanger to flow into the total heat exchange core, to control the pre-dehumidification operation, and to improve the reliability of the control.

[0039] In an embodiment of the present application, the air path switching component is arranged between the total heat exchange core and the partition plate.

[0040] The air path switching component is further configured to selectively communicate the fresh air channel and the exhaust air channel.

[0041] The above technical solution has the following advantages or beneficial effects: by controlling the fresh air channel and the exhaust air channel to communicate outside the heat exchange cavity through the air path switching component, the indoor return air outlet and the indoor air outlet are communicated with each other, when the indoor temperature does not reach the set temperature value, the indoor return air outlet and the indoor air outlet are communicated, to realize rapid adjustment of the indoor temperature, thereby improving the user experience.

[0042] In an embodiment of the present application, the air path switching component can be a switching valve, a first valve port of the switching valve communicates the exhaust air channel, a second valve port of the switching valve communicates the heat exchange cavity, and a third valve port of the switching valve communicates the fresh air channel; the switching valve can switch the first valve port to communicate the second valve port or the third valve port, and similarly, the switching valve can also switch the first valve port to be in a closed state.

[0043] In an embodiment of the present application, the fresh air heat exchange flow channel of the total heat exchange core is arranged obliquely, and the fresh air heat exchange flow channel is further configured to selectively perform condensation and dehumidification treatment on the air flow passing therethrough.

[0044] The technical scheme has the following advantages or beneficial effects: by arranging the fresh air heat exchange flow channel to be inclined, when the fresh air enters the fresh air heat exchange flow channel for condensation and dehumidification, the condensed water can flow out of the total heat exchange core quickly through the inclined fresh air heat exchange flow channel, so that the condensed water is prevented from being stored in the total heat exchange core, and the reliability of use is improved.

[0045] In an embodiment of the present application, the bottom of the total heat exchange core is further provided with a condensed water collecting disc configured to collect the condensed water flowing out of the fresh air heat exchange flow channel.

[0046] The technical scheme has the following advantages or beneficial effects: by arranging the condensed water collecting disc at the bottom of the total heat exchange core, the condensed water collecting disc can collect the condensed water flowing out of the total heat exchange core, and the condensed water collecting disc can be connected with a drain pipe to discharge the collected condensed water to the outside of the shell.

[0047] In an embodiment of the present application, the shell is further provided with an electric heating component arranged close to the indoor air outlet, and a space is formed between the electric heating component and the heat exchanger, and the electric heating component is configured to heat the airflow flowing therethrough and output from the indoor air outlet.

[0048] The technical scheme has the following advantages or beneficial effects: by arranging the electric heating component at the indoor air outlet, the airflow cooled and condensed by the heat exchanger can be heated by the electric heating component, so that the temperature fluctuation range of the indoor environment in the dehumidification process is reduced, and the user experience is improved.

[0049] Other features and advantages of the present application will become more apparent after reading the specific embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are some embodiments of the present application, and other accompanying drawings can be obtained by those skilled in the art without any creative labor.

[0051] Figure 1 FIG. 1 is a structural schematic diagram of one embodiment of the indoor unit of the air conditioner of the present application;

[0052] Figure 2 FIG. 2 is a structural schematic diagram of another embodiment of the indoor unit of the air conditioner of the present application;

[0053] Figure 3Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application;

[0054] Figure 4 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application; Figure 1 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application;

[0055] Figure 5 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application; Figure 1 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application;

[0056] Figure 6 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application; Figure 1 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application;

[0057] Figure 7 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application; Figure 4 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application;

[0058] Figure 8 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application; Figure 4 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application;

[0059] Figure 9 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application; Figure 4 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application;

[0060] Figure 10 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application; Figure 6 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application;

[0061] Figure 11 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application; Figure 4 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application;

[0062] Figure 12 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application; Figure 4 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application;

[0063] Figure 13 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application; Figure 4 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application;

[0064] Figure 14 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application; Figure 4 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application;

[0065] Figure 15 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application; Figure 4 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application;

[0066] Figure 16 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application; Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application;

[0067] Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application; Figure 17 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application; Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application;

[0068] Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application; Figure 18 Structure schematic view of the air conditioner indoor unit according to an embodiment of the present application; Figure 17Structure schematic view of the full-heat-exchange core.

[0069] Reference signs:

[0070] 1, housing; 11, indoor air outlet; 12, indoor air return; 13, outdoor air outlet; 14, outdoor air inlet; 15, second partition plate; 16, first partition plate; 17, threading plate; 18, first filter screen; 19, second filter screen; 10, heat exchange cavity;

[0071] 151, folded edge; 161, second air door; 162, first air door; 163, third air vent; 171, first wiring part; 172, second wiring part;

[0072] 101, bearing part; 102, fixing part; 103, clamping groove;

[0073] 2, full-heat-exchange core; 21, exhaust air heat exchange flow channel; 22, fresh air heat exchange flow channel;

[0074] 3, fan assembly; 31, mounting bracket; 32, fan;

[0075] 311, ventilation gap; 312, avoidance gap; 313, bearing matching part; 314, fixing matching part;

[0076] 4, electric control box; 41, electric controller; 42, air inlet hole; 43, air outlet hole; 44, first fireproof plate; 45, second fireproof plate; 46, terminal;

[0077] 5, heat exchanger; 51, first mounting plate; 52, second mounting plate; 53, drainage pump;

[0078] 6, heat preservation frame; 61, first connecting port; 62, second connecting port; 63, third connecting port; 64, fourth connecting port; 65, partition plate; 66, positioning groove; 67, first mounting part; 68, second mounting part; 69, wiring groove;

[0079] 651, first air vent; 652, second air vent;

[0080] 7, heating assembly; 71, electric auxiliary support; 72, electric heating component; 711, first plug-in part; 712, first connecting part; 713, second plug-in part; 714, second connecting part; 721, first plug-in matching part; 722, first connecting matching part; 723, first end; 724, second end; 725, electric heating element;

[0081] 8, air path switching component. DETAILED DESCRIPTION

[0082] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0083] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0084] The terms "first", "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "a plurality of" means two or more.

[0085] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0086] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "under" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0087] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which in itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0088] The air conditioner indoor unit in the present application generally comprises a shell and a fan and a total heat exchange core body arranged in the shell, wherein two first air vents connecting the indoor side are arranged on the shell, and two first air vents connecting the outdoor side are also arranged on the shell, wherein one fan inhales indoor air through the first air vent on the indoor side, flows through the total heat exchange core body for heat exchange, and then is discharged to the outdoor through the first air vent on the outdoor side, and the other fan inhales outdoor air through the first air vent on the outdoor side, flows through the total heat exchange core body for heat exchange, and then is discharged to the indoor through the first air vent on the indoor side.

[0089] As shown in Figure 16 and Figure 18 An embodiment of the present application provides an air conditioner indoor unit, which comprises a shell 1, wherein an indoor air outlet 11, an indoor air return 12, an outdoor air outlet 13 and an outdoor air inlet 14 are arranged on the shell 1, a fresh air channel is formed between the indoor air outlet 11 and the outdoor air inlet 14, and an exhaust air channel is formed between the indoor air return 12 and the outdoor air outlet 13.

[0090] Specifically, the shell 1 serves as a mounting body structure of the air conditioner indoor unit, and the indoor air outlet 11, the indoor air return 12, the outdoor air outlet 13 and the outdoor air inlet 14 are arranged on the shell 1 to meet the requirements of indoor and outdoor air flow.

[0091] Generally, the indoor air outlet 11 and the indoor air return 12 are formed on a first end surface of the shell 1, and the outdoor air outlet 13 and the outdoor air inlet 14 are formed on a second end surface of the shell 1, and the first end surface and the second end surface of the shell 1 are arranged back to back.

[0092] The air conditioner indoor unit comprises a total heat exchange core body 2 arranged in the shell 1, and the total heat exchange core body 2 is configured to exchange heat between the air flow passing through the fresh air channel and the air flow passing through the exhaust air channel.

[0093] Specifically, the total heat exchange core body 2 is provided with an exhaust air heat exchange flow channel and a fresh air heat exchange flow channel, and the exhaust air heat exchange flow channel and the fresh air heat exchange flow channel are in thermal conduction with each other.

[0094] The air conditioner indoor unit comprises a heat exchanger 5 configured to perform heat exchange treatment on the air flow passing therethrough.

[0095] Specifically, the heat exchanger 5 can perform heat exchange treatment on the air flow passing through the fresh air channel, and the air flow after the heat exchange treatment will be output to the indoor through the indoor air outlet 11.

[0096] The air conditioner indoor unit comprises two fan assemblies 3, one of which is arranged in the fresh air channel, and the other of which is arranged in the exhaust air channel.

[0097] Specifically, the two fan assemblies 3 are used to meet the driving requirements of indoor and outdoor air flow, one of which is arranged in the fresh air channel to meet the requirement that the outdoor fresh air enters the shell 1 and is output from the indoor air outlet 11 after heat exchange through the total heat exchange core 2. The other fan assembly 3 is arranged in the exhaust air channel to meet the requirement that the indoor dirty air enters the shell 1 and is output from the outdoor air outlet 13 after heat exchange through the total heat exchange core 2.

[0098] In one embodiment, the shell 1 further comprises a heat exchange cavity 10, the indoor air outlet 11 communicates with the heat exchange cavity 10, and the heat exchanger 5 is arranged in the heat exchange cavity 10; the fresh air channel is formed between the indoor air outlet 11, the heat exchange cavity 10, the fresh air heat exchange flow channel 22 and the outdoor air inlet 14, and the exhaust air channel is formed between the indoor return air outlet 12, the exhaust air heat exchange flow channel 21 and the outdoor air outlet 13.

[0099] The heat exchange cavity 10 is configured to selectively communicate with the exhaust air heat exchange flow channel 21, and in the state of communicating with the exhaust air heat exchange flow channel 21, part of the air flow after the heat exchange through the heat exchanger 5 is transported into the exhaust air heat exchange flow channel 21.

[0100] Specifically, in actual use, under the action of the fan assembly 3, the outdoor fresh air enters the shell 1 through the outdoor air inlet 14, the fresh air is heat treated through the fresh air heat exchange flow channel 22 of the total heat exchange core 2, and then enters the heat exchange cavity 10, the fresh air is further heat treated with the heat exchanger 5, and finally output to the outside of the shell 1 to enter the indoor through the indoor air outlet 11.

[0101] When dehumidification treatment is required through the air conditioner indoor unit, the heat exchanger 5 is in a refrigeration cooling state, so that the fresh air passing through the heat exchanger 5 can be condensed and dehumidified.

[0102] When the humidity of the fresh air is high and the dehumidification effect is poor by only relying on the heat exchanger 5, part of the airflow after heat exchange by the heat exchanger 5 can be transported to the exhaust air heat exchange flow channel 21. In this way, the airflow input from the indoor return air inlet 12 and part of the airflow after heat exchange by the heat exchanger 5 are both transported in the exhaust air heat exchange flow channel 21, so that the overall temperature of the airflow in the exhaust air heat exchange flow channel 21 is lower than the temperature of the airflow at the indoor return air inlet 12.

[0103] In the process of heat exchange between the airflow in the exhaust air heat exchange flow channel 21 and the fresh air airflow of the fresh air heat exchange flow channel 22, pre-dehumidification treatment can be realized by the total heat exchange core 2, so that the fresh air enters the fresh air heat exchange flow channel 22 for preliminary dehumidification, and then the humidity of the airflow output from the fresh air heat exchange flow channel 22 is reduced, and after secondary dehumidification by the heat exchanger 5, the humidity of the fresh air can be quickly and efficiently reduced to achieve the effect of rapid dehumidification.

[0104] By distributing the airflow after heat exchange by the heat exchanger 5, part of the airflow after heat exchange is transported to the exhaust air heat exchange flow channel 21 in the dehumidification mode. In this way, the temperature of the airflow in the exhaust air heat exchange flow channel 21 is low, and in the process of heat conduction between the airflow in the exhaust air heat exchange flow channel 21 and the airflow in the fresh air heat exchange flow channel 22, the fresh air input from the outdoor air inlet 14 can be pre-cooled and dehumidified by the total heat exchange core 2. The humidity of the airflow output from the fresh air heat exchange flow channel 22 is preliminarily reduced, and then when the airflow output from the fresh air heat exchange flow channel 22 flows through the heat exchanger 5 for condensation dehumidification, the humidity of the airflow can be more efficiently reduced. Two-stage dehumidification treatment is realized by the cooperation of the total heat exchange core 2 and the heat exchanger 5, and the dehumidification efficiency of the air conditioner indoor unit is improved.

[0105] In an embodiment, the heat exchange cavity 10 is configured to selectively communicate with the exhaust air heat exchange flow channel 21, and in the state of communicating with the exhaust air heat exchange flow channel 21, part of the airflow after heat exchange by the heat exchanger 5 is transported to the exhaust air heat exchange flow channel 21.

[0106] Specifically, the airflow after heat exchange treatment by the heat exchanger 5 entering the heat exchange cavity 10 can be selectively partially transported to the exhaust air heat exchange flow channel 21 as needed.

[0107] When the airflow after heat exchange in the heat exchange cavity 10 is partially transported to the exhaust air heat exchange flow channel 21, the overall temperature of the airflow flowing in the exhaust air heat exchange flow channel 21 is reduced, and in the process of heat exchange between the airflow in the exhaust air heat exchange flow channel 21 and the fresh air airflow of the fresh air heat exchange flow channel 22, pre-dehumidification treatment can be realized by the total heat exchange core 2.

[0108] In this way, the new air enters the new air heat exchange flow channel 22 for preliminary dehumidification, and the humidity of the air flow output from the new air heat exchange flow channel 22 after preliminary dehumidification is reduced. After secondary dehumidification by the heat exchanger 5, the humidity of the new air can be quickly and efficiently reduced to achieve the effect of rapid dehumidification.

[0109] In an embodiment, the housing 1 is provided with a partition plate 65, which surrounds the inner side of the indoor air outlet 11. The partition plate 65 divides the housing 1 to form the heat exchange cavity 10;

[0110] The partition plate 65 is provided with a first air vent 651 and a second air vent 652;

[0111] The first air vent 651 is arranged on the windward side of the heat exchanger 5 and is configured to transport air flow towards the windward surface of the heat exchanger 5;

[0112] The second air vent 652 is arranged on the leeward side of the heat exchanger 5 and is configured to transport air flow after heat exchange by the heat exchanger 5 to the exhaust air heat exchange flow channel 21.

[0113] Specifically, the partition plate 65 is arranged in the housing 1, and the heat exchange cavity 10 is formed on the inner side of the indoor air outlet 11 by the partition plate 65 to meet the installation requirements of the heat exchanger 5.

[0114] Furthermore, the first air vent 651 arranged on the partition plate 65 can meet the requirement that the air flow output from the new air heat exchange flow channel 22 enters the heat exchange cavity 10 for heat exchange with the heat exchanger 5. For example, the outlet of the fan assembly 3 located in the new air channel is connected to the first air vent 651. Under the action of the fan assembly 3, the air flow output from the new air heat exchange flow channel 22 is sucked into the fan assembly 3 and transported from the first air vent 651 towards the heat exchanger 5.

[0115] Similarly, the second air vent 652 can meet the requirement that the air flow after heat exchange with the heat exchanger 5 in the heat exchange cavity 10 is transported to the exhaust air heat exchange flow channel 21. The air flow processed by the heat exchanger 5 in the heat exchange cavity 10 can be transported to the exhaust air channel and finally flow into the exhaust air heat exchange flow channel 21 through the second air vent 652 to meet the air flow requirements in different situations.

[0116] In an embodiment, as shown in Figure 17 The first air door 162 is arranged at the second air vent 652 and is configured to open and close the second air vent 652.

[0117] Specifically, when it is required to deliver the part of the airflow in the heat exchange cavity 10 which has been heat exchanged by the heat exchanger 5 to the exhaust air heat exchange flow channel 21, the first air door 162 is opened, at this time, the part of the airflow in the heat exchange cavity 10 flows from the second air vent 652 to the exhaust air passage and enters into the exhaust air heat exchange flow channel 21, and the remaining airflow in the heat exchange cavity 10 can be output from the indoor air outlet 11.

[0118] By setting the first air door 162 to control the on-off of the second air vent 652, when it is required to perform pre-dehumidification by the total heat exchange core 2, the airflow in the heat exchange cavity 10 which has been heat exchanged by the heat exchanger 5 is controlled to flow into the total heat exchange core 2 by opening the first air door 162 to control the pre-dehumidification operation, thereby improving the reliability of the control.

[0119] In an embodiment, as shown in Figure 17 the first partition plate 16 is arranged in the shell 1 and connected between the total heat exchange core 2 and the partition plate 65;

[0120] One end of the first partition plate 16 separates the exhaust air heat exchange flow channel 21 and the fresh air heat exchange flow channel 22 from each other, and the other end of the first partition plate 16 separates the first air vent 651 and the second air vent 652 from each other.

[0121] Specifically, the first partition plate 16 arranged in the shell 1 can separate the fresh air passage and the exhaust air passage from each other between the total heat exchange core 2 and the partition plate 65. The first partition plate 16 can also separate the exhaust air heat exchange flow channel 21 and the fresh air heat exchange flow channel 22 from each other, and can also separate the first air vent 651 and the second air vent 652 from each other, so as to ensure that the indoor exhaust air and the outdoor incoming air are independent of each other.

[0122] In an embodiment, as shown in Figure 17 the first partition plate 16 is arranged in the shell 1 and connected between the total heat exchange core 2 and the partition plate 65;

[0123] The third air vent 163 is further provided with a second air door 161, and the second air door 161 is configured to open and close the third air vent 163.

[0124] Specifically, in the closed state of the second air door 161, the indoor return air outlet 12 and the indoor air outlet 11 are separated, and the exhaust air passage and the fresh air passage are isolated from each other, so as to meet the requirement of independent indoor and outdoor air intake and exhaust.

[0125] When it is required to perform internal circulation, the second air door 161 can be opened, and the airflow input by the indoor return air outlet 12 can flow into the fan assembly 3 in the fresh air passage and be delivered to the heat exchange cavity 10 for heat exchange treatment by the heat exchanger 5.

[0126] The opening and closing of the third air vent 163 is controlled by the second damper 161, which can realize the intercommunication between the indoor return air vent 12 and the indoor air outlet 11, so as to realize the rapid adjustment of the indoor temperature by connecting the indoor return air vent 12 and the indoor air outlet 11 when the indoor temperature does not reach the set temperature value, thereby improving the user experience.

[0127] In an embodiment, as shown in Figure 16 The shell 1 is further provided with an air path switching component 8, which is configured to selectively connect the exhaust air heat exchange flow channel 21 and the heat exchange cavity 10.

[0128] Specifically, the air path switching component 8 can be a switching valve. According to the use requirement, when secondary dehumidification is needed, the exhaust air heat exchange flow channel 21 and the heat exchange cavity 10 are connected.

[0129] By setting the air path switching component 8 in the shell 1, the air flow path in the shell 1 is switched. When pre-dehumidification treatment is needed by the total heat exchange core 2, the air path switching component 8 connects the exhaust air heat exchange flow channel 21 and the heat exchange cavity 10, thereby realizing the control of the air flow in the heat exchange cavity 10 after heat exchange by the heat exchanger 5 into the total heat exchange core 2, to control the pre-dehumidification operation, and to improve the reliability of the control.

[0130] In an embodiment of the present application, the air path switching component 8 is arranged between the total heat exchange core 2 and the partition plate 65.

[0131] The air path switching component 8 is further configured to selectively connect the fresh air channel and the exhaust air channel.

[0132] Specifically, when internal circulation is needed, the air path switching component 8 connects the fresh air channel and the exhaust air channel, so that the air flow input by the indoor return air vent 12 can flow into the fan assembly 3 in the fresh air channel and be transported to the heat exchange cavity 10 for heat exchange treatment with the heat exchanger 5.

[0133] The above technical solution has the following advantages or beneficial effects: the fresh air channel and the exhaust air channel are connected outside the heat exchange cavity 10 by the air path switching component 8, to realize the intercommunication between the indoor return air vent 12 and the indoor air outlet 11. When the indoor temperature does not reach the set temperature value, the indoor return air vent 12 and the indoor air outlet 11 are connected to realize the rapid adjustment of the indoor temperature, thereby improving the user experience.

[0134] In an embodiment, the first valve port of the switching valve is communicated with the exhaust channel, the second valve port of the switching valve is communicated with the heat exchange cavity 10, and the third valve port of the switching valve is communicated with the fresh air channel; the switching valve can switch the first valve port to be communicated with the second valve port or the third valve port, and the switching valve can also switch the first valve port to be in a closed state.

[0135] In an embodiment of the present application, as shown in Figure 18 the fresh air heat exchange flow channel 22 of the total heat exchange core 2 is arranged obliquely, and the fresh air heat exchange flow channel 22 is also configured to selectively perform condensation and dehumidification on the airflow flowing therethrough.

[0136] Specifically, since the total heat exchange core 2 can perform pre-dehumidification on fresh air during use, condensate water will be generated in the fresh air heat exchange flow channel 22 during the pre-dehumidification process, and the condensate water in the fresh air heat exchange flow channel 22 can be discharged in time by arranging the fresh air heat exchange flow channel 22 in an oblique extension structure.

[0137] By arranging the fresh air heat exchange flow channel 22 obliquely, when the fresh air enters the fresh air heat exchange flow channel 22 to perform condensation and dehumidification during the pre-dehumidification process by the total heat exchange core 2, the generated condensate water can quickly flow out of the total heat exchange core 2 through the oblique fresh air heat exchange flow channel 22, so as to avoid the condensate water from being stored in the total heat exchange core 2, thereby improving the reliability of use.

[0138] In an embodiment, the bottom of the total heat exchange core 2 is also provided with a condensate water collection tray (not shown), which is configured to collect the condensate water flowing out of the fresh air heat exchange flow channel 22.

[0139] Specifically, the condensate water generated during the condensation and dehumidification process of the total heat exchange core 2 can be collected by the condensate water collection tray at the bottom of the total heat exchange core 2, and the condensate water collection tray can discharge the collected condensate water to the outside of the shell 1 through a connected drain pipe. For the discharge mode of the condensate water, reference can be made to the drain mode of the water collecting tray arranged at the bottom of the heat exchanger 5, that is, the conventional drain structure of the air collecting tray, which is not limited herein.

[0140] By arranging the condensate water collection tray at the bottom of the total heat exchange core 2, the condensate water collection tray can collect the condensate water flowing out of the total heat exchange core 2, and the condensate water collection tray can be connected to a drain pipe to discharge the collected condensate water to the outside of the shell 1.

[0141] In an embodiment of the present application, the shell 1 is also provided with an electric heating component 72; the electric heating component 72 is arranged close to the indoor air outlet 11, an interval is formed between the electric heating component 72 and the heat exchanger 5, and the electric heating component 72 is configured to heat the airflow flowing therethrough and output from the indoor air outlet 11.

[0142] Specifically, the temperature of the fresh air will be reduced after the fresh air is processed by the heat exchanger 5 in the dehumidification process. In order to avoid the fresh air output from the indoor air outlet 11 causing a large fluctuation range of the indoor temperature, an electric heating component 72 can be arranged at the indoor air outlet 11, and the air flow processed by the heat exchanger 5 is heated by the electric heating component 72 to reduce the fluctuation range of the indoor temperature.

[0143] In order to ensure that the air flow processed by the heat exchanger 5 can be smoothly delivered to the exhaust air heat exchange flow channel 21 in the secondary dehumidification working state, the electric heating component 72 is arranged at intervals with the heat exchanger 5. Thus, the air flow processed by the heat exchanger 5 and needing to be delivered to the exhaust air heat exchange flow channel 21 will not be heated by the electric heating component 72.

[0144] By arranging the electric heating component 72 at the indoor air outlet 11, the air flow processed by the heat exchanger 5 can be heated by the electric heating component 72 to reduce the fluctuation range of the indoor temperature in the dehumidification process, thereby improving the user experience.

[0145] As shown in Figures 1-4 An embodiment of the present application provides an air conditioner indoor unit, which comprises a shell 1, wherein the shell 1 is provided with an indoor air outlet 11, an indoor air return inlet 12, an outdoor air outlet 13, and an outdoor air inlet 14. A fresh air channel is formed between the indoor air outlet 11 and the outdoor air inlet 14, and an exhaust air channel is formed between the indoor air return inlet 12 and the outdoor air outlet 13.

[0146] Specifically, the shell 1 serves as a mounting body structure of the air conditioner indoor unit, and the indoor air outlet 11, the indoor air return inlet 12, the outdoor air outlet 13, and the outdoor air inlet 14 are arranged on the shell 1 to meet the requirement of indoor and outdoor air flow.

[0147] Generally, the indoor air outlet 11 and the indoor air return inlet 12 are formed on a first end surface of the shell 1, and the outdoor air outlet 13 and the outdoor air inlet 14 are formed on a second end surface of the shell 1. The first end surface and the second end surface of the shell 1 are arranged in opposite directions.

[0148] The air conditioner indoor unit comprises a total heat exchange core 2, which is arranged in the shell 1 and is configured to perform heat exchange processing on the air flow flowing through the fresh air channel and the air flow flowing through the exhaust air channel.

[0149] Specifically, the total heat exchange core 2 is provided with an exhaust air heat exchange flow channel and a fresh air heat exchange flow channel, and the exhaust air heat exchange flow channel and the fresh air heat exchange flow channel are in thermal conduction with each other; the indoor return air outlet 12, the exhaust air heat exchange flow channel, and the outdoor air outlet 13 form an exhaust air passage in the shell 1, and the outdoor air inlet 14, the fresh air heat exchange flow channel, and the indoor air outlet 11 form a fresh air passage in the shell 1.

[0150] The heat exchanger 5 is configured to perform heat exchange treatment on the air flow flowing through the fresh air passage.

[0151] Specifically, the heat exchanger 5 can perform heat exchange treatment on the air flow flowing through the fresh air passage, and the air flow after the heat exchange treatment is output to the indoor air through the indoor air outlet 11.

[0152] Two fan assemblies 3, the fan assembly 3 includes a mounting bracket 31 and a fan 32, the fan 32 is arranged on the mounting bracket 31; one of the fan assemblies 3 is arranged in the fresh air passage, and the other of the fan assemblies 3 is arranged in the exhaust air passage.

[0153] Specifically, the two fan assemblies 3 are used to meet the driving requirements of indoor and outdoor air flow, one of the fan assemblies 3 is arranged in the fresh air passage to meet the requirement that the outdoor fresh air enters the shell 1 and is output from the indoor air outlet 11 after heat exchange through the total heat exchange core 2. The other of the fan assemblies 3 is arranged in the exhaust air passage to meet the requirement that the indoor dirty air enters the shell 1 and is output from the outdoor air outlet 13 after heat exchange through the total heat exchange core 2.

[0154] In an embodiment of the present application, as shown in Figures 1-4 、 Figures 14-15 In order to perform heating treatment on the air after heat exchange treatment through the heat exchanger 5, the shell is further provided with an electric heating assembly 7.

[0155] In an embodiment, the electric heating assembly 7 includes an electric auxiliary bracket 71, and the electric auxiliary bracket 71 is provided with a first plug-in part 711 and a first connecting part 712.

[0156] The electric heating assembly 7 includes an electric heating part 72, one end of the electric heating part 72 is provided with a first plug-in matching part 721, and the other end of the electric heating part 72 is provided with a first connecting matching part 722.

[0157] The first plug-in part 711 and the first plug-in matching part 721 are inserted together, and the first connecting part 712 and the first connecting matching part 722 are fixedly connected together through screws; the electric auxiliary bracket 71 is arranged in the shell and located between the heat exchanger and the indoor air outlet.

[0158] Specifically, the electric heating assembly 7 adopts the electric heating component 72 to heat, and the electric heating component 72 can generate heat to meet the heating requirements after being powered on. In order to enable the electric heating assembly 7 to be fixedly installed in the shell, the electric heating component 72 is fixedly installed in the interior of the shell through the electric auxiliary support 71.

[0159] In order to facilitate the disassembly and maintenance of the electric heating component 72, in the assembly process, one end of the electric heating component 72 is installed on the electric auxiliary support 71 in a plug-in manner, and the other end of the electric heating component 72 is fixedly installed on the electric auxiliary support 71 through a screw, so as to reduce the number of screws.

[0160] In the disassembly process, only the screws arranged on the corresponding end of the electric heating component 72 need to be unscrewed and removed, and the first plug-in matching part 721 of the electric heating component 72 can be directly pulled out of the first plug-in part 711 on the electric auxiliary support 71, so as to reduce the number of screws to be disassembled.

[0161] By arranging the first plug-in part 711 on the electric auxiliary support 71, and correspondingly arranging the first plug-in matching part 721 on the electric heating component 72, one end of the electric heating component 72 can be installed on the electric auxiliary support 71 in a plug-in manner, and the other end of the electric heating component 72 is fixedly installed through a screw connection, so as to reduce the amount of screws used, and only a small number of screws are needed to fixedly connect the fixed part and the fixed matching part together, so as to complete the assembly; in the later maintenance process, after the screws on the corresponding end of the electric heating component 72 are disassembled by the maintenance personnel, the electric heating component 72 can be pulled out of the electric auxiliary support 71, thereby reducing the disassembly difficulty and improving the maintenance convenience.

[0162] In another embodiment, the electric auxiliary support 71 is provided with a second plug-in part 713 and a second connecting part 714, and the top plate of the shell is provided with a second plug-in matching part (not shown) and a second connecting matching part (not shown); the second plug-in part 713 and the second plug-in matching part are plugged together, and the second connecting part 714 and the second connecting matching part are fixedly connected together through a screw.

[0163] Specifically, the electric heating assembly 7 adopts the electric heating component 72 to heat, and the electric heating component 72 can generate heat to meet the heating requirements after being powered on. In order to enable the electric heating assembly 7 to be fixedly installed in the shell, the electric heating component 72 is fixedly installed in the interior of the shell through the electric auxiliary support 71.

[0164] In order to facilitate disassembly and maintenance of the heating assembly 7, during assembly, the electric auxiliary support 71 is inserted into the second insertion matching part of the shell through the second insertion part 713, and then the second connecting part 714 is fixedly connected with the second connecting matching part through the screw.

[0165] Similarly, when disassembling and maintaining the heating assembly 7, only a small amount of screws need to be disassembled, and the second insertion part 713 of the electric auxiliary support 71 can be directly pulled out from the second insertion matching part of the shell, so as to reduce the number of screws to be disassembled.

[0166] By providing the second insertion part 713 on the electric auxiliary support 71, and correspondingly providing the second insertion matching part on the shell, the electric auxiliary support 71 can be first inserted into the shell in the form of insertion, and then fixedly installed through the screw connection. In this way, the number of screws used can be reduced, and only a small number of screws are needed to fixedly connect the fixed part with the fixed matching part, so that the assembly can be completed. During the later maintenance process, the maintenance personnel only need to disassemble a small number of screws to disassemble the electric heating assembly 7 from the shell, thereby reducing the disassembly difficulty and improving the maintenance convenience.

[0167] In an embodiment of the present application, the electric auxiliary support 71 is provided with the first insertion part 711 and the first connecting part 712, and is also provided with the second insertion part 713 and the second connecting part 714.

[0168] One end of the electric heating component 72 is provided with the first insertion matching part 721, and the other end of the electric heating component 72 is provided with the first connecting matching part 722.

[0169] The top plate of the shell is provided with the second insertion matching part (not shown) and the second connecting matching part (not shown).

[0170] The first insertion part 711 and the first insertion matching part 721 are inserted together, and the first connecting part 712 and the first connecting matching part 722 are fixedly connected together through the screw.

[0171] The second insertion part 713 and the second insertion matching part are inserted together, and the second connecting part 714 and the second connecting matching part are fixedly connected together through the screw.

[0172] The first plug-in part 711 is arranged on the electric auxiliary support 71, and the first plug-in matching part 721 is arranged on the electric heating component 72 correspondingly. One end of the electric heating component 72 is installed on the electric auxiliary support 71 in a plug-in manner, and the other end of the electric heating component 72 is fixed and installed by screw connection. In this way, the number of screws can be reduced, and only a small number of screws are needed to fixedly connect the fixed part and the fixed matching part together to complete the assembly. During the later maintenance process, the electric heating component 72 can be pulled out of the electric auxiliary support 71 after the screws on the corresponding end of the electric heating component 72 are disassembled, thereby reducing the disassembly difficulty and improving the maintenance convenience. Similarly, the second plug-in part 713 is arranged on the electric auxiliary support 71, and the second plug-in matching part is arranged on the shell correspondingly. The electric auxiliary support 71 can be installed in the shell in a plug-in manner first, and then fixed and installed by screw connection. In this way, the number of screws can be reduced, and only a small number of screws are needed to fixedly connect the fixed part and the fixed matching part together to complete the assembly. During the later maintenance process, the electric heating assembly 7 can be disassembled from the shell by only disassembling a small number of screws, thereby reducing the disassembly difficulty and improving the maintenance convenience.

[0173] In an embodiment of the present application, the electric heating component 72 includes a first end 723, a second end 724 and an electric heating element 725, and the electric heating element 725 is arranged between the first end 723 and the second end 724.

[0174] The first end 723 is provided with the first plug-in matching part 721, and the second end 724 is provided with a first connection matching part 722.

[0175] Specifically, for the electric heating component, the electric heating element 725 can be connected to a power supply cable, so that the electric heating element 725 can generate heat in a powered state. The two ends of the electric heating element 725 are correspondingly provided with the first end 723 and the second end 724, which are supported by insulating materials, thereby satisfying the installation of the electric heating element 725 on the electric auxiliary support 71.

[0176] The first end 723 is provided with the first plug-in matching part 721 to satisfy the plug-in installation together with the electric auxiliary support 71, and the second end 724 is fixedly connected with the electric auxiliary support 71 by screws.

[0177] The expression entity of the above-mentioned plug-in part and plug-in matching part has various structural forms, for example: the plug-in part is a plug-in slot, and the plug-in matching part is a plug-in tongue; or, the plug-in part is a plug-in tongue, and the plug-in matching part is a plug-in slot, which is not limited and described here. The expression entity of the connecting part and the connecting matching part can be a hole structure, for example: the connecting part is a threaded hole, and the connecting matching part is a through hole; or, the connecting part is a through hole, and the connecting matching part is a threaded hole.

[0178] The electric heating component 72 adopts a split design, and the end of the electric heating element 725 is respectively provided with a first end head 723 and a second end head 724. The first end head 723 is provided with a first plug-in matching part 721 to meet the requirements of plug-in connection with the electric auxiliary support 71, and the second end head 724 is provided with a first connecting matching part 722 to meet the requirements of fixed installation on the electric auxiliary support 71 through a screw.

[0179] In an embodiment of the present application, the first connecting part 712 and the first connecting matching part 722 are arranged close to the indoor air outlet, and the first plug-in part 711 and the first plug-in matching part 721 are arranged away from the indoor air outlet.

[0180] Specifically, after the heating assembly 7 is assembled into the shell, in order to facilitate disassembly and maintenance, the first connecting part 712 and the first connecting matching part 722 are arranged close to the indoor air outlet. In this way, when the electric heating component 72 needs to be disassembled and maintained, the operator does not need to open the shell, but only needs to insert a tool into the shell through the indoor air outlet and disassemble the screws on the first connecting part 712 and the first connecting matching part 722. Then, the electric heating component 72 is pulled to be inclined to be pulled out of the indoor air outlet.

[0181] When the maintenance is completed and the assembly is assembled again, the electric heating component 72 is inclined to be inserted into the indoor air outlet, the first plug-in matching part 721 is plug-in assembled to the first plug-in part 711, and the first connecting part 712 and the first connecting matching part 722 are fixedly connected together through a screw, so that the disassembly and assembly of the electric heating component 72 can be completed without opening the shell, and the convenience of maintenance is improved.

[0182] By arranging the first connecting part 712 and the first connecting matching part 722 close to the indoor air outlet, when disassembled and maintained, the maintenance personnel can insert a screwdriver into the shell through the indoor air outlet to disassemble the screws on the first connecting part 712 and the first connecting matching part 722, and then the electric heating component 72 is inclined to be directly taken out of the indoor air outlet. Similarly, when installed and maintained, the electric heating component 72 is inclined to be inserted into the shell through the indoor air outlet and plug-in assembled on the auxiliary support, and then fixed through a screw, so that the convenience of maintenance is more effectively improved.

[0183] In an embodiment of the present application, as shown in Figure 4 , Figures 11-12 For the electric control box 4, since the electric control box 4 is provided with the electric controller 41, the electric controller 41 will generate heat during the operation of the electric appliance in the air conditioner indoor unit, and the electric controller 41 in the electric control box 4 needs to be cooled.

[0184] Therefore, the electric control box 4 is provided with an air inlet hole 42 and an air outlet hole 43, and the inside of the electric control box 4 forms a cooling air duct between the air inlet hole 42 and the air outlet hole 43, and the electric control box 4 is arranged in the air outlet passage in the shell.

[0185] Specifically, by arranging the electric control box 4 in the air outlet passage in the shell, during the operation of the air conditioner indoor unit, the indoor return air inlet can suck in the indoor air and discharge it outward through the air outlet passage.

[0186] After the airflow flowing in the air outlet passage passes through the electric control box 4, part of the airflow can enter the electric control box 4 through the air inlet hole 42, and the temperature of the air sucked in by the indoor return air inlet is generally not higher than 30 degrees, so that the airflow sucked in by the indoor return air inlet can enter the electric control box 4 to cool the electric controller 41 in the electric control box 4.

[0187] After the airflow enters the electric control box 4 and exchanges heat with the electric controller 41, the heat-exchanged airflow is discharged from the electric control box 4 through the air outlet hole and flows back to the air outlet passage and is finally discharged to the outside of the shell.

[0188] By correspondingly arranging the air inlet hole 42 and the air outlet hole 43 on the electric control box 4, and arranging the electric control box 4 in the air outlet passage, during the operation of the air conditioner indoor unit, the airflow input by the indoor return air inlet flows in the air outlet passage, part of the airflow can enter the electric control box 4 through the air inlet hole 42, and the airflow entering the electric control box 4 can exchange heat with the heating electric appliance element of the electric controller 41, thereby effectively and timely taking away the heat in the electric control box 4 and discharging it from the air outlet hole. In this way, the electric control box 4 has circulating airflow for cooling, so that the electric controller 41 can be well cooled, and the outside of the electric control box 4 can also be cooled by the airflow, thereby improving the cooling efficiency of the electric appliance box and improving the operation reliability of the equipment.

[0189] In another embodiment of the present application, the electric control box 4 is provided with an air inlet hole 42 and an air outlet hole 43, and the inside of the electric control box 4 forms a cooling air duct between the air inlet hole 42 and the air outlet hole 43, and the electric control box 4 is arranged in the shell.

[0190] The air inlet hole 42 is close to the indoor return air inlet, and the air outlet hole 43 is close to the air outlet passage.

[0191] Specifically, for the electric control box 4, the air inlet hole 42 arranged on the electric control box 4 is arranged close to the indoor return air inlet, so that part of the air flow sucked in through the indoor return air inlet can enter the electric control box 4 through the air inlet hole 42 arranged close to the indoor return air inlet after flowing into the shell, so that the air flow sucked in through the indoor return air inlet enters the electric control box 4, and the air flow entering the electric control box 4 can exchange heat with the heating electrical element of the electric controller 41, thereby effectively and timely removing the heat in the electric control box 4, and the heat-exchanged air flow is discharged from the air outlet hole to the outside of the electric control box 4 and enters the exhaust heat exchange flow channel of the total heat exchange core, so that the air flow in the electric control box 4 circulates to remove heat, so that the electric controller 41 is well heat-dissipated, and at the same time, the outside of the electric control box 4 can also be heat-dissipated through the air flow, thereby improving the heat dissipation efficiency of the electric appliance box and improving the operation reliability of the equipment.

[0192] After the air flow enters the electric control box 4 and exchanges heat with the electric controller 41, the heat-exchanged air flow is discharged from the electric control box 4 through the air outlet hole and flows back into the exhaust channel and is finally discharged to the outside of the shell.

[0193] By correspondingly arranging the air inlet hole 42 and the air outlet hole 43 on the electric control box 4, the air inlet hole 42 is arranged close to the indoor return air inlet, so that the air flow flowing into the electric control box 4 through the indoor return air inlet can enter the electric control box 4 through the air inlet hole 42 arranged close to the indoor return air inlet, the air flow entering the electric control box 4 can exchange heat with the heating electrical element of the electric controller 41, thereby effectively and timely removing the heat in the electric control box 4, and the heat-exchanged air flow is discharged from the air outlet hole to the outside of the electric control box 4 and enters the exhaust heat exchange flow channel of the total heat exchange core, so that the air flow in the electric control box 4 circulates to remove heat, so that the electric controller 41 is well heat-dissipated, and at the same time, the outside of the electric control box 4 can also be heat-dissipated through the air flow, thereby improving the heat dissipation efficiency of the electric appliance box and improving the operation reliability of the equipment.

[0194] The air flow flowing into the shell through the indoor return air inlet, part of the air flow directly flows into the total heat exchange core, and the remaining part of the air flow flows into the electric control box 4 through the air inlet hole 42 and is discharged from the air outlet hole 43 and flows into the total heat exchange core.

[0195] By correspondingly arranging the air inlet hole 42 and the air outlet hole 43 on the electric control box 4, the air inlet hole 42 is arranged close to the indoor return air inlet, so that the air inlet hole 42 is arranged close to the indoor return air inlet, so that the air flow flowing into the electric control box 4 through the indoor return air inlet can enter the electric control box 4 through the air inlet hole 42 arranged close to the indoor return air inlet, the air flow entering the electric control box 4 can exchange heat with the heating electrical element of the electric controller 41, thereby effectively and timely removing the heat in the electric control box 4, and the heat-exchanged air flow is discharged from the air outlet hole to the outside of the electric control box 4 and enters the exhaust heat exchange flow channel of the total heat exchange core, so that the air flow in the electric control box 4 circulates to remove heat, so that the electric controller 41 is well heat-dissipated, and at the same time, the outside of the electric control box 4 can also be heat-dissipated through the air flow, thereby improving the heat dissipation efficiency of the electric appliance box and improving the operation reliability of the equipment.

[0196] In an embodiment, the shell further comprises a second partition plate, one end of the second partition plate is connected to the total heat exchange core, and the second partition plate separates the two fan assemblies.

[0197] The shell further comprises a first partition plate, one end of the first partition plate is connected to the total heat exchange core, and the first partition plate separates the indoor air outlet and the indoor return air inlet.

[0198] The total heat exchange core separates the outdoor air outlet and the outdoor air inlet.

[0199] Specifically, the two fan assemblies 3 are arranged on the same side of the shell 1, which facilitates the quick assembly of the two fan assemblies 3 in the same direction during the assembly process. Moreover, the two fan assemblies 3 are spaced apart by the second spacing plate 15, so that the two fan assemblies 3 do not affect each other during operation.

[0200] By further arranging the first spacing plate 16 in the shell 1, the first spacing plate 16 separates the exhaust heat exchange flow channel and the fresh air heat exchange flow channel of the total heat exchange core 2 from each other through the ports on the indoor side, so as to meet the installation requirements of the total heat exchange core 2.

[0201] Among the four corners of the total heat exchange core 2, the corner facing the indoor side is separated by the first spacing plate 16, the corner facing the fan assembly 3 side is separated by the second spacing plate 15, and the other two corners of the total heat exchange core 2 can be connected to the corresponding side walls of the shell 1 in a conventional manner, so as to finally realize the mutual isolation of the exhaust air channel and the fresh air channel.

[0202] In an embodiment, the first spacing plate is provided with a communication port, the communication port is provided with a second air door, and the communication port is configured to communicate the indoor air outlet and the indoor air return port, and the second air door is configured to open and close the communication port.

[0203] Specifically, in order to realize the mutual communication of the indoor air return port 12 and the indoor air outlet 11 when the exhaust air channel and the fresh air channel are subjected to indoor circulation treatment, a second air door 161 can be directly added between the inlet of the exhaust air heat exchange flow channel and the outlet of the fresh air heat exchange flow channel of the total heat exchange core 2.

[0204] When the second air door 161 is in a closed state, the indoor air return port 12 and the indoor air outlet 11 are isolated, so that the exhaust air channel and the fresh air channel are isolated from each other to meet the requirement of independent indoor and outdoor air inlet and outlet, and at this time, the air valves of the outdoor air inlet port 14 and the outdoor air outlet port 13 are in an open state.

[0205] When indoor circulation is required, the second air door 161 can be opened, and the second air door 161 allows the indoor air return port 12 and the indoor air outlet 11 to communicate with each other at the total heat exchange core 2, and at this time, the air valves of the outdoor air inlet port 14 and the outdoor air outlet port 13 are in a closed state.

[0206] In an embodiment, the air inlet hole 42 is arranged on the end face of the electric control box 4 opposite to the indoor air return port, and the air outlet hole 43 is arranged on the side wall of the electric control box 4 opposite to the first spacing plate;

[0207] The air flow from the indoor return air outlet into the shell, part of the air flow directly flows into the communication port, and the remaining part of the air flow flows into the electric control box 4 through the air inlet hole 42 and is discharged from the air outlet hole 43 and flows into the communication port.

[0208] Specifically, in order to meet the heat dissipation requirement of the electric control box 4 during the process of the air conditioner indoor unit in the internal circulation, the air outlet hole 43 is arranged on the side wall of the electric control box 4 facing the first partition plate, and the heat-exchanged gas discharged from the electric control box 4 can enter the other side of the first partition plate through the second air door and be discharged from the indoor air outlet.

[0209] By arranging the air inlet hole 42 at the end of the electric control box 4 to be opposite to the indoor return air outlet, the air flow from the indoor return air outlet into the shell can enter the electric control box 4 for heat dissipation treatment, and for the air flow output from the electric control box 4, because the air outlet hole 43 is arranged on the side wall of the electric control box 4 and opposite to the second partition, the heat dissipation requirement of the electric control box 4 can be met during the process of the air conditioner indoor unit in the fresh air and internal circulation, so as to improve the use reliability.

[0210] In an embodiment of the present application, the air inlet hole 42 is arranged away from the air outlet hole 43.

[0211] Specifically, by arranging the air inlet hole 42 away from the air outlet hole 43, the air inlet and outlet of the electric control box 4 can be effectively isolated to avoid the air flow interference between the air inlet hole 42 and the air outlet hole 43, so as to improve the heat dissipation efficiency.

[0212] In an embodiment of the present application, the air inlet hole 42 and the air outlet hole 43 are arranged at the bottom of the electric control box 4.

[0213] Specifically, by arranging the air inlet hole 42 at the bottom of the electric control box 4, the air flow entering the electric control box 4 through the air inlet hole 42 is heat-exchanged with the electric control device 41 and becomes hot air, and the hot air flows to the top area of the electric control box 4 during the flow process due to the hot air rising, and the air outlet hole 43 is arranged at the bottom of the electric control box 4, so that the hot air flows to the area above the air outlet hole 43 after rising and flows downward again, thereby the heat dissipation treatment of the electric elements at different positions of the electric control device 41 in the electric control box 4 can be more comprehensive and effective.

[0214] In an embodiment of the present application, a first fireproof plate 44 is further arranged on the electric control box 4, the first fireproof plate 44 covers the outside of the air inlet hole 42, and an air inlet interval is formed between the first fireproof plate 44 and the electric control box 4.

[0215] Specifically, the electric control device 41 in the electric control box 4 can generate electric sparks due to faults during operation, and the electric sparks can be transmitted to the outside of the electric control box 4 through the air inlet hole 42. In order to avoid damage to the devices outside the electric control box 4 caused by the electric sparks, the first fireproof plate 44 can be covered outside the air inlet hole 42.

[0216] During use, when the electric sparks are output from the air inlet hole 42, the electric sparks can be blocked by the first fireproof plate 44 outside the air inlet hole, so as to prevent the electric sparks from escaping arbitrarily, thereby improving the safety and reliability of use.

[0217] By arranging the first fireproof plate 44 on the electric control box 4, the first fireproof plate can block the outside of the air inlet hole 42. When the electric control box 4 generates electric sparks due to circuit faults, the electric sparks sprayed out of the air inlet hole 42 can be blocked by the first fireproof plate 44, so as to avoid damage to the components outside the electric control box 4 caused by the electric sparks, even to avoid fire, thereby improving the safety and reliability of use.

[0218] In an embodiment of the present application, the electric control box 4 is further provided with a second fireproof plate 45, the second fireproof plate 45 covers the outside of the air outlet hole 43, and the second fireproof plate 45 and the electric control box 4 form an air outlet interval.

[0219] Specifically, the electric control device 41 in the electric control box 4 can generate electric sparks due to faults during operation, and the electric sparks can be transmitted to the outside of the electric control box 4 through the air outlet hole 43. In order to avoid damage to the devices outside the electric control box 4 caused by the electric sparks, the second fireproof plate 45 can be covered outside the air outlet hole 43.

[0220] During use, when the electric sparks are output from the air inlet hole 42, the electric sparks can be blocked by the first fireproof plate 44 outside the air inlet hole 42, so as to prevent the electric sparks from escaping arbitrarily, thereby improving the safety and reliability of use.

[0221] By arranging the second fireproof plate 45 on the electric control box 4, the second fireproof plate can block the outside of the air outlet hole. When the electric control box 4 generates electric sparks due to circuit faults, the electric sparks sprayed out of the air outlet hole can be blocked by the second fireproof plate 45, so as to avoid damage to the components outside the electric control box 4 caused by the electric sparks, even to avoid fire, thereby improving the safety and reliability of use.

[0222] In an embodiment of the present application, the electric control box 4 is further provided with a wiring terminal 46, the wiring terminal is exposed outside the electric control box 4, and the wiring terminal is electrically connected with the electric control device 41.

[0223] Specifically, since the electric control box 4 is arranged in the shell, in order to facilitate the electric connection between the electric control box 4 and the external electrical device, a wiring terminal 46 can be arranged on the electric control box 4, the wiring terminal 46 extends to the outside of the electric control box 4, and the wiring terminal 46 is electrically connected with the electric controller 41 in advance. The external electrical device is connected with the wiring terminal 46 through a cable, so as to improve the convenience of circuit connection.

[0224] By arranging the wiring terminal 46 on the electric control box 4, when the electrical device in the shell is connected with the electric controller 41 in the electric control box 4, the electric connection can be quickly completed by plugging the wiring terminal 46 outside the electric control box 4, so as to improve the assembly efficiency.

[0225] In an embodiment of the present application, in order to improve the disassembly convenience of the fan assembly 3, the mounting mode of the fan assembly 3 is improved as follows.

[0226] As shown in Figure 6 and Figure 8 , the top plate of the shell 1 is provided with two sets of assembly units, each set of assembly units includes a bearing part 101 and a fixing part 102; the mounting bracket 31 is provided with a bearing matching part 313 and a fixing matching part 314; the bearing matching part 313 is screwlessly assembled on the bearing part 101, and the fixing matching part 314 is screw-fixedly connected with the fixing part 102.

[0227] Specifically, the fan 32 is fixedly mounted on the top plate of the shell 1 through the mounting bracket 31, wherein the top plate of the shell 1 is provided with the bearing part 101 and the fixing part 102, and correspondingly, the mounting bracket 31 is provided with the bearing matching part 313 and the fixing matching part 314. The bearing part 101 and the bearing matching part 313 are matched to realize screwless assembly, and the fixing part 102 and the fixing matching part 314 are matched to realize screw mounting.

[0228] In this way, in the actual assembly process, the mounting bracket 31 is first mounted through the cooperation of the bearing matching part 313 and the bearing part 101, and then the fixing matching part 314 is screw-fixedly mounted on the fixing part 102.

[0229] Similarly, in the later maintenance process, the screw between the fixing part 102 and the fixing matching part 314 can be disassembled first, and then the bearing matching part 313 is separated from the bearing part 101, so that the fan assembly 3 can be disassembled from the shell 1.

[0230] By setting two assembling units on the shell 1, the bearing part 101 in the assembling unit can be connected with the bearing matching part 313 on the mounting bracket 31 without screws, and the fixing part 102 in the assembling unit can be connected with the fixing matching part 314 on the mounting bracket 31 through screws, so that in the actual assembly process, the operator can reduce the amount of screws by matching the bearing matching part 313 with the bearing part 101, and only a small number of screws are needed to fixedly connect the fixing part 102 and the fixing matching part 314, so that the assembly can be completed. Similarly, in the later maintenance process, the operator only needs to disassemble a small number of screws to disassemble the fan assembly 3 from the shell 1, thereby reducing the disassembly difficulty to improve the maintenance convenience.

[0231] In an embodiment, the bearing matching part 313 is slidably arranged on the bearing part 101.

[0232] Specifically, the matching mode of the bearing matching part 313 and the bearing part 101 can be sliding connection, and the specific matching structure can be a conventional sliding installation structure such as a sliding rail matched with a sliding groove.

[0233] In this way, in the assembly process, the bearing matching part 313 is slidably assembled to the bearing part 101, and then the fixing part 102 and the fixing matching part 314 are screwed and fixed.

[0234] In some embodiments, the performance entity of the fixing part 102 can be a screw hole, and the performance entity of the fixing matching part 314 can be a fixing hole, which will not be repeated and limited here.

[0235] In an embodiment, the bearing matching part 313 is overlapped on the bearing part 101.

[0236] Specifically, the matching mode of the bearing matching part 313 and the bearing part 101 can be overlapping, and the specific matching structure can be that the bearing matching part 313 is an overlapping plate extending out of the mounting bracket 31, and the bearing part 101 is a hanging plate formed on the top plate of the shell 1, and the overlapping plate is overlapped on the hanging plate.

[0237] In an embodiment, the bearing matching part 313 is inserted into the bearing part 101.

[0238] Specifically, the matching mode of the bearing matching part 313 and the bearing part 101 can be insertion, and the specific matching structure can be that the bearing matching part 313 is an insertion plate extending out of the mounting bracket 31, and the bearing part 101 is an insertion slot formed on the top plate of the shell 1, and the insertion plate is inserted into the insertion slot.

[0239] In an embodiment, in order to realize the design of compact structure, two fan assemblies 3 are arranged side by side on one side of the shell 1.

[0240] A second partition plate 15 is arranged between the two fan assemblies 3, and the two sides of the second partition plate 15 are respectively provided with the assembly units. The second partition plate 15 is arranged between the side wall of the shell 1 and the total heat exchange core 2.

[0241] Specifically, the two fan assemblies 3 are arranged on the same side of the shell 1, which facilitates the quick assembly of the two fan assemblies 3 in the same direction during the assembly process. Moreover, the two fan assemblies 3 are spaced apart by the second partition plate 15, so that the two fan assemblies 3 do not affect each other during operation.

[0242] By arranging the two fan assemblies 3 on the same side of the shell 1 and spacing them apart by the second partition plate 15, the layout of the devices inside the shell 1 is more compact, so as to realize the compact design of the structure. At the same time, the second partition plate 15 isolates the two fan assemblies 3, thereby realizing the mutual isolation of the fresh air channel and the exhaust air channel, and ensuring that the air in and out of the shell 1 exchanges heat well and the air paths do not affect each other.

[0243] In an embodiment, the two fan assemblies 3 are arranged side by side between the indoor air outlet 11 and the outdoor air outlet 13.

[0244] The outlet of one of the fans 32 communicates with the outdoor air outlet 13, and the outlet of the other fan 32 communicates with the indoor air outlet 11.

[0245] Specifically, the two fan assemblies 3 are arranged on the same side of the shell 1 and located between the indoor air outlet 11 and the outdoor air outlet 13. In this way, the fan assembly 3 adjacent to the indoor air outlet 11 is used to drive the airflow to flow in the fresh air channel, and the fan assembly 3 adjacent to the outdoor air outlet 13 is used to drive the airflow to flow in the exhaust air channel.

[0246] By arranging the fan assembly 3 between the indoor air outlet 11 and the outdoor air outlet 13, the air output to the outdoor can be efficiently discharged to the outdoor through the outdoor air outlet 13 under the action of the corresponding fan 32, and similarly, the air output to the indoor can be efficiently delivered to the indoor under the action of the corresponding fan 32, so as to increase the air supply amount in the indoor, thereby reducing the air outlet resistance of the fan 32 and improving the air supply efficiency.

[0247] In an embodiment, the heat exchanger 5 is arranged between the indoor air outlet 11 and the outlet of the corresponding fan 32.

[0248] Specifically, for the heat exchanger 5, it is installed between the indoor air outlet 11 and the corresponding fan 32, so that the airflow output by the fan 32 directly blows to the heat exchanger 5.

[0249] By arranging the heat exchanger 5 between the indoor air outlet 11 and the outlet of the fan 32, the airflow output by the outlet of the fan 32 is directly blown to the heat exchanger 5, thereby improving the heat exchange efficiency of the airflow and the heat exchanger 5, and improving the heat exchange efficiency of the air conditioner indoor unit.

[0250] In an embodiment, the shell 1 is further provided with a partition plate 65, the partition plate 65 is provided with a first air vent 651, the partition plate 65 covers the inner side of the indoor air outlet 11 in the interior of the shell 1, the partition plate 65 separates the indoor air outlet 11 and the indoor return air outlet 12, the indoor air outlet 11 is communicated with the outlet of the corresponding fan 32 through the first air vent 651, and the heat exchanger 5 is located between the first air vent 651 and the indoor air outlet 11.

[0251] Specifically, the partition plate 65 arranged in the shell 1 can surround the space where the heat exchanger 5 is installed at the outdoor air outlet 13, so as to facilitate the installation of the heat exchanger 5 at the indoor air outlet 11, and ensure that the airflow flowing in the fresh air channel can be effectively exchanged with the heat exchanger 5.

[0252] By arranging the partition plate 65 in the shell 1 to separate the indoor air outlet 11 and the indoor return air outlet 12, at the same time, the partition plate 65 covers the area of the indoor air outlet 11 to form a space for installing the heat exchanger 5, so that the airflow generated by the corresponding fan 32 is blown to the heat exchanger 5 through the first air vent 651 for heat exchange before being output from the indoor air outlet 11, so as to ensure that the airflow output from the indoor air outlet 11 is fully exchanged, thereby improving the heat exchange efficiency.

[0253] In an embodiment, the shell 1 is further provided with a first partition plate 16; the first partition plate 16 is arranged between the partition plate 65 and the total heat exchange core 2.

[0254] Specifically, by further arranging the first partition plate 16 in the shell 1, the first partition plate 16 separates the exhaust air heat exchange flow channel and the fresh air heat exchange flow channel of the total heat exchange core 2 from each other through the ports adjacent to the indoor side, so as to meet the installation requirements of the total heat exchange core 2.

[0255] Among them, the corner of the total heat exchange core 2 towards the indoor side is separated by the first partition plate 16, and the corner towards the fan assembly 3 side is separated by the second partition plate 15, and the other two corners of the total heat exchange core 2 can be connected to the corresponding side wall of the shell 1 in a conventional installation manner, so as to finally realize the isolation of the exhaust air channel and the fresh air channel.

[0256] In an embodiment of the present application, as Figure 5 , Figure 8 and Figure 9As shown, in order to improve the air supply efficiency of the fan 32, the indoor unit of the air conditioner is improved as follows.

[0257] The application provides an indoor unit of an air conditioner, comprising a shell 1, wherein an indoor air outlet 11, an indoor air return inlet 12, an outdoor air outlet 13 and an outdoor air inlet 14 are arranged on the shell 1, a fresh air channel is formed between the indoor air outlet 11 and the outdoor air inlet 14, and an exhaust air channel is formed between the indoor air return inlet 12 and the outdoor air outlet 13.

[0258] The indoor unit of the air conditioner comprises a total heat exchange core 2, wherein the total heat exchange core 2 is arranged in the shell 1, and the total heat exchange core 2 is configured to perform heat exchange treatment on airflows flowing through the fresh air channel and the exhaust air channel.

[0259] The indoor unit of the air conditioner comprises a heat exchanger 5, wherein the heat exchanger 5 is configured to perform heat exchange treatment on airflows flowing through the fresh air channel.

[0260] The indoor unit of the air conditioner comprises two fan assemblies 3, wherein each fan assembly 3 comprises a mounting bracket 31 and a fan 32, the fan 32 is arranged on the mounting bracket 31, one fan assembly 3 is arranged in the fresh air channel, and the other fan assembly 3 is arranged in the exhaust air channel.

[0261] The mounting bracket 31 and the top plate of the shell 1 form a space, the fan 32 is provided with a centrifugal fan, and a ventilation gap 311 is further arranged on the mounting bracket 31, wherein the ventilation gap 311 is configured to allow airflows to flow between the upper and lower surfaces of the mounting bracket 31.

[0262] Specifically, for the fan assembly 3, the fan 32 can adopt a centrifugal fan and is fixedly installed on the top of the shell 1 through the mounting bracket 31. The mounting bracket 31 and the top plate of the shell 1 form a space, so that the airflows entering and exiting the total heat exchange core 2 flow to the upper and lower surfaces of the mounting bracket 31 during the operation of the fan 32.

[0263] The ventilation gap 311 is arranged on the mounting bracket 31, the upper and lower spaces of the mounting bracket 31 are connected to each other through the ventilation gap 311, and when there is a large difference in the airflow amount of the two inlets of the centrifugal fan during the operation of the centrifugal fan, the air in the upper and lower layers of the mounting bracket 31 can flow to each other, so that the airflow amount of the two inlets of the centrifugal fan is automatically balanced.

[0264] By providing ventilation gaps 311 on the mounting bracket 31, the upper and lower sides of the mounting bracket 31 can be connected to each other through the ventilation gaps 311. In this way, during the operation of the fan 32, the airflow distribution on both sides of the mounting bracket 31 can be balanced, so that the air intake on both sides of the fan 32 is more uniform, thereby improving the air delivery efficiency of the fan 32.

[0265] In one embodiment, the ventilation opening 311 is arranged on the outside of the fan 32 and away from the total heat exchange core 2.

[0266] Specifically, the ventilation opening 311 is located near the side wall of the outer casing 1, and in order to meet the requirements of the mounting bracket 31 supporting the installation of the fan 32, the ventilation opening 311 is also located on the outside of the fan 32.

[0267] Since the ventilation opening 311 is close to the side wall of the housing 1 and far away from the total heat exchange core 2, it can reduce the area of ​​poor ventilation that is generated near the side wall of the housing 1.

[0268] By providing a ventilation gap 311 at the location of the mounting bracket 31 outside the fan 32, a large space is provided between the ventilation gap 311 and the side wall of the outer casing 1 to meet the vertical ventilation requirements of the mounting bracket 31. At the same time, the ventilation gap 311 is far away from the total heat exchange core 2, which can ensure that sufficient negative pressure is formed at the total heat exchange core 2 to accelerate the flow speed of air in the total heat exchange core 2.

[0269] In one embodiment, the mounting bracket 31 is provided with an avoidance notch 312, the avoidance notch 312 is arranged adjacent to the total heat exchange core 2, and the corresponding corner of the total heat exchange core 2 is sandwiched between the two fans 32.

[0270] Specifically, in order to achieve the requirement of compact installation of internal components of the housing 1, a clearance notch 312 is provided on the mounting bracket 31. The design of the clearance notch 312 allows the heat exchange core 2 to use the space provided by the clearance notch 312 to get closer to the fan 32, so as to achieve a compact structural design inside the housing 1.

[0271] By providing a clearance notch 312 on the mounting bracket 31, the corner of the total heat exchange core 2 will be inserted into the area between the two fans 32 and connected to the second partition plate 15, so that the total heat exchange core 2 can be arranged closer to the fans 32, the components in the housing 1 are more compactly distributed, which is more conducive to the design requirements of overall structural compactness, so as to reduce the overall volume of the housing 1.

[0272] Meanwhile, since the total heat exchange core 2 is closer to the inlet of the fan 32, it is more conducive to increasing the negative pressure at the heat exchange core, so as to accelerate the flow speed of the air in the total heat exchange core 2.

[0273] In an embodiment of the present application, as shown in Figures 4-7 In order to improve the assembly efficiency of the heat preservation structure installed inside the shell 1, the air conditioner indoor unit is improved in structure as follows.

[0274] The air conditioner indoor unit comprises a shell 1, wherein an indoor air outlet 11, an indoor air return inlet 12, an outdoor air outlet 13 and an outdoor air inlet 14 are arranged on the shell 1, a fresh air passage is formed between the indoor air outlet 11 and the outdoor air inlet 14, and an exhaust air passage is formed between the indoor air return inlet 12 and the outdoor air outlet 13.

[0275] The air conditioner indoor unit comprises a total heat exchange core 2, wherein the total heat exchange core 2 is arranged in the shell 1, and the total heat exchange core 2 is configured to perform heat exchange treatment on airflows flowing through the fresh air passage and the exhaust air passage.

[0276] The air conditioner indoor unit comprises a heat exchanger 5, wherein the heat exchanger 5 is configured to perform heat exchange treatment on airflows flowing through the fresh air passage.

[0277] The air conditioner indoor unit comprises two fan assemblies 3, wherein each fan assembly 3 comprises a mounting bracket 31 and a fan 32, the fan 32 is arranged on the mounting bracket 31, one fan assembly 3 is arranged in the fresh air passage, and the other fan assembly 3 is arranged in the exhaust air passage.

[0278] The air conditioner indoor unit comprises a heat preservation frame 6, wherein a first connecting port 61, a second connecting port 62, a third connecting port 63 and a fourth connecting port 64 are arranged on the heat preservation frame 6.

[0279] The heat preservation frame 6 is arranged in the shell 1 and abuts against the inner side walls of the shell 1, the first connecting port 61 is connected with the indoor air outlet 11, the second connecting port 62 is connected with the indoor air return inlet 12, the third connecting port 63 is connected with the outdoor air inlet 14, and the fourth connecting port 64 is connected with the outdoor air outlet 13.

[0280] Specifically, when the side walls of the shell 1 need to be heat preserved and insulated, the heat preservation frame 6 in an integrated structure can be arranged in the shell 1, and the four walls of the heat preservation frame 6 abut against the corresponding inner side walls of the shell 1, so that the heat preservation and insulation of the four walls of the shell 1 can be realized by only arranging the entire heat preservation frame 6 in the shell 1.

[0281] By adding the heat preservation frame 6 in the shell 1, on the one hand, the side wall of the shell 1 can be integrally heat preserved by the heat preservation frame 6 to meet the heat preservation and insulation requirements. The heat preservation frame 6 is a whole structure, avoiding gaps caused by assembled structures, and having better heat preservation performance. Related components in the shell 1 are installed in the heat preservation frame 6 to improve the assembly accuracy and assembly consistency, and more conducive to improving the assembly efficiency.

[0282] In an embodiment, the heat preservation frame 6 is provided with a partition plate 65, the partition plate 65 is provided with a first ventilation opening 651, the partition plate 65 covers the inner side of the first connecting opening 61, the partition plate 65 separates the first connecting opening 61 and the second connecting opening 62, and the partition plate 65 separates the heat preservation frame 6 into a first installation area and a second installation area.

[0283] The first installation area is provided with the heat exchanger 5, and the second installation area is provided with the total heat exchange core 2 and the fan assembly 3.

[0284] One outlet of the fan 32 is connected with the fourth connecting opening 64, and the outlet of the other fan 32 communicates with the first installation area through the first ventilation opening 651.

[0285] The heat exchanger 5 is arranged between the first ventilation opening 651 and the first connecting opening 61.

[0286] Specifically, since the heat preservation frame 6 is built in the shell 1, the related components in the shell 1 are also surrounded inside by the heat preservation frame 6. In order to realize the installation of different parts in different areas, a partition plate 65 can also be arranged in the heat preservation shelf.

[0287] The partition plate 65 and the heat preservation shelf are an integral structure. Under the action of the partition plate 65, the heat preservation frame 6 forms the first installation area and the second installation area which are separated. In the first installation area, the heat exchanger 5 is installed to enable the airflow entering the room to be well heat exchanged with the heat exchanger 5, thereby improving the heat exchange efficiency.

[0288] By arranging the partition plate 65 in the heat preservation frame 6, the partition plate 65 separates the heat preservation frame 6 into two installation areas to respectively install the related components in the shell 1, thereby improving the assembly accuracy and assembly consistency, and more conducive to improving the assembly efficiency.

[0289] In an embodiment, for the second installation area, the fan assembly 3, the total heat exchange core 2, and the electric control box 4 and other components are correspondingly installed. In the actual assembly process, based on the above description in the embodiment, the second partition plate 15 and the first partition plate 16 can be arranged in the second installation area.

[0290] Specifically, two fan assemblies 3 are arranged side by side on one side of the shell 1; a second partition plate 15 is further arranged in the shell 1 and located between the two fan assemblies 3; an inner wall of the heat preservation frame 6 is further provided with a positioning groove 66, and the end of the second partition plate 15 is inserted into the positioning groove 66; and the second partition plate 15 is arranged between the positioning groove 66 and the total heat exchange core 2.

[0291] By arranging the positioning groove 66, in the process of installing the second partition plate 15, the end of the second partition plate 15 can be inserted into the positioning groove 66, so as to pre-assemble the second partition plate 15 to the shell 1, and the number of screws used in the fixing and installation of the second partition plate 15 can be effectively reduced, thereby improving the disassembly and assembly efficiency.

[0292] In an embodiment, the second partition plate 15 is provided with a folded edge 151, the end of the second partition plate 15 is inserted into the positioning groove 66, the folded edge 151 is clamped in the clamping groove 103 of the top plate of the shell 1, and the folded edge 151 is fixedly connected to the top plate of the shell 1 by a screw.

[0293] Specifically, for the second partition plate 15, in order to facilitate the operator to quickly install, the end of the second partition plate 15 can be inserted into the positioning groove 66 at the same time, and the folded edge 151 can be inserted into the clamping groove 103 arranged on the top plate of the shell 1, so that the positioning groove 66 and the clamping groove 103 can cooperate to pre-position and assemble the second partition plate 15, and finally, the folded edge 151 is fixed to the top plate of the shell 1 by a single screw.

[0294] By arranging the clamping groove 103 on the shell 1, in the process of installing the second partition plate 15, the folded edge 151 of the second partition plate 15 is clamped in the clamping groove 103, so as to pre-assemble the second partition plate 15 to the shell 1, and then the folded edge 151 is fixedly installed on the top plate of the shell 1 by a screw, so as to fix and install the second partition plate 15, thereby effectively reducing the number of screws used in the fixing and installation of the second partition plate 15, and improving the disassembly and assembly efficiency.

[0295] In another embodiment, for the first partition plate 16, the first partition plate 16 is arranged between the partition plate 65 and the total heat exchange core 2.

[0296] Specifically, by arranging the first partition plate 16 in the shell 1, the first partition plate 16 is connected between the partition plate 65 and the total heat exchange core 2, and then the first partition plate 16 separates the exhaust air channel and the fresh air channel at the total heat exchange core 2, so as to ensure that the outdoor exhaust air and the indoor fresh air do not affect each other.

[0297] In an embodiment, in order to prolong the service life of the total heat exchange core 2, the heat preservation frame 6 is provided with two first mounting portions 67 arranged oppositely, and a first filter screen 18 is arranged between the two first mounting portions 67.

[0298] The first filter screen 18 is arranged between the total heat exchange core 2 and the indoor return air inlet 12.

[0299] Specifically, the first filter screen 18 is mounted and fixed through the two first mounting portions 67 formed in the heat preservation frame 6, the first filter screen 18 can filter the air input into the shell 1 by the indoor return air inlet 12, and then the filtered air enters the total heat exchange core 2.

[0300] The first mounting portion 67 can be in the form of a screw fixing or the like to assemble the first filter screen 18 in place, or can be in the form of a slot or the like to meet the mounting requirements of the first filter screen 18.

[0301] By arranging the first filter screen 18, the air in the room can be effectively filtered after entering the shell 1, so as to play a dust protection role for the total heat exchange core, thereby improving the service life of the total heat exchange core. The first mounting portion 67 arranged on the heat preservation frame 6 can conveniently mount the first filter screen 18, thereby improving the assembly convenience.

[0302] In an embodiment, the heat preservation frame 6 is provided with two second mounting portions 68 arranged oppositely, and a second filter screen 19 is arranged between the two second mounting portions 68.

[0303] The second filter screen 19 is arranged between the total heat exchange core 2 and the outdoor air inlet 14.

[0304] Specifically, after the outdoor air enters the shell 1, it is first filtered by the second filter screen 19 and then flows into the total heat exchange core 2.

[0305] The second mounting portion 68 can be in the form of a screw fixing or the like to assemble the second filter screen 19 in place, or can be in the form of a slot or the like to meet the mounting requirements of the second filter screen 19.

[0306] By arranging the second filter screen 19, the outdoor air can be effectively filtered after entering the shell 1, so as to play a dust protection role for the total heat exchange core, thereby improving the service life of the total heat exchange core. The second mounting portion 68 arranged on the heat preservation frame 6 can conveniently mount the second filter screen 19, thereby improving the assembly convenience.

[0307] In another embodiment, in order to improve the heat exchange efficiency of the heat exchanger 5 and the air flow, a first mounting plate 51 is arranged between the first end of the heat exchanger 5 and the inner side wall adjacent to the heat preservation frame 6, and a second mounting plate 52 is arranged between the second end of the heat exchanger 5 and the heat preservation frame 6, and the second mounting plate 52 is inclined towards the indoor air outlet 11 and connected between the indoor air outlet 11 and the indoor air return port 12.

[0308] Specifically, the heat exchanger 5 is fixedly installed in the first mounting area through the mounting plates on both sides, and the first mounting plate 51 and the second mounting plate 52 can well fix and support the heat exchanger 5 on both sides.

[0309] In addition, the second mounting plate 52 extends to the indoor air outlet 11, and the inclined second mounting plate 52 can guide the air flow after heat exchange of the heat exchanger 5, so that the air flow can quickly flow to the indoor air outlet 11.

[0310] By arranging the mounting plates at both ends of the heat exchanger 5, a relatively closed air outlet area is formed between the heat exchanger 5 and the indoor air outlet 11, and the second mounting plate 52 extends towards the indoor air outlet 11, so that the second mounting plate 52 can guide the air flow after heat exchange of the heat exchanger 5, so that the air flow after heat exchange can smoothly flow to the indoor air outlet 11.

[0311] In an embodiment, the shell 1 is further provided with a water pan (not shown), which is located in the first mounting area and arranged below the heat exchanger 5.

[0312] Specifically, the water pan is installed in the first mounting area, and the water pan and the top plate of the shell 1 form a relatively closed heat exchange cavity in the first mounting area, so that the air flow entering the heat exchange cavity can be well heat exchanged with the heat exchanger 5.

[0313] At the same time, the water pan can collect the defrosting water of the heat exchanger 5.

[0314] In addition, the shell 1 is further provided with a drainage pump 53, which is arranged above the water pan and between the second mounting plate 52 and the partition plate 65.

[0315] By arranging the water pan at the bottom of the first mounting area to meet the requirement of collecting condensed water on the evaporator, and arranging the drainage pump 53 outside the second mounting plate 52, the air flow after heat exchange of the heat exchanger 5 is prevented from being blocked by the drainage pump 53 during flowing to the indoor air outlet 11, so as to reduce the air resistance at the indoor air outlet 11 and improve the air outlet efficiency.

[0316] In an embodiment of the present application, as shown inFigures 4-7 As shown, in order to realize the compact design of the overall structure, the indoor unit of the air conditioner is improved and designed as follows.

[0317] The indoor unit of the air conditioner comprises a shell 1, the shell 1 is provided with an indoor air outlet 11, an indoor air return port 12, an outdoor air outlet 13 and an outdoor air inlet 14, a new air passage is formed between the indoor air outlet 11 and the outdoor air inlet 14, and an exhaust air passage is formed between the indoor air return port 12 and the outdoor air outlet 13.

[0318] The indoor unit of the air conditioner comprises a total heat exchange core 2, the total heat exchange core 2 is arranged in the shell 1, and the total heat exchange core 2 is configured to exchange heat between the air flow passing through the new air passage and the air flow passing through the exhaust air passage.

[0319] The indoor unit of the air conditioner comprises a heat exchanger 5, the heat exchanger 5 is configured to exchange heat for the air flow passing through the new air passage;

[0320] The indoor unit of the air conditioner comprises two fan assemblies 3, the fan assembly 3 comprises a mounting bracket 31 and a fan 32, the fan 32 is arranged on the mounting bracket 31; one of the fan assemblies 3 is arranged in the new air passage, and the other of the fan assemblies 3 is arranged in the exhaust air passage.

[0321] The shell 1 is formed with a first mounting area and a second mounting area, the heat exchanger 5 is arranged in the first mounting area, the fan assembly 3 and the total heat exchange core 2 are arranged in the second mounting area, the indoor air outlet 11 communicates with the first mounting area, the indoor air return port 12, the outdoor air outlet 13 and the outdoor air inlet 14 communicate with the second mounting area, and the first mounting area extends to the indoor air return port 12 and covers part of the indoor air return port 12 inside the shell 1.

[0322] Specifically, because the heat exchanger 5 and the total heat exchange core 2 are installed in the indoor unit of the air conditioner, the number of components in the shell 1 is relatively large. For the indoor air return port 12 and the indoor air outlet on the shell 1, the distance between the two needs to meet the connection requirements of the pipeline in the user's home, so the distance between the two cannot be too small. In order to make the structure more compact, part of the area of the indoor air return port 12 inside the shell 1 can be occupied to meet the installation requirements of the related components.

[0323] Specifically, the first mounting area extends to the indoor return air inlet 12 and covers part of the indoor return air inlet 12 inside the shell 1. In this way, the length of the first mounting area is further increased, so that components such as the heat exchanger 5 and the drain pump 53 can be installed in the first mounting area, and the heat exchanger 5 has a large enough heat exchange area while ensuring compact design of the structure.

[0324] By providing the first mounting area and the second mounting area in the shell 1, the first mounting area is used to meet the installation requirements of the heat exchanger 5, and at the same time, to meet the requirements of compact design of the internal structure of the shell 1 and the requirements of the heat exchanger 5 on the heat exchange area, the first mounting area will occupy part of the area where the indoor return air inlet 12 is located, so that part of the indoor return air inlet 12 is covered by the first mounting area, and the area between the indoor return air inlet 12 and the indoor air outlet 11 can be fully utilized to increase the size of the first mounting area to meet the installation requirements of the heat exchanger 5 with more heat exchange area, which can improve the heat exchange area of the heat exchanger 5 on the one hand, and meet the requirements of compact design of the internal structure of the shell 1 on the other hand, so as to reduce the overall volume of the air conditioner.

[0325] In an embodiment, based on the above embodiment, the heat preservation frame 6 is divided into the first mounting area and the second mounting area by the partition plate 65;

[0326] The heat preservation frame 6 covers part of the indoor return air inlet 12 inside the shell 1.

[0327] Specifically, by increasing the heat preservation frame 6 in the shell 1, on the one hand, the heat preservation frame 6 can perform overall heat preservation treatment on the side wall of the shell 1 to meet the heat preservation and insulation requirements, and the heat preservation frame 6 has a whole structure to avoid gaps caused by assembly structure and has better heat preservation performance; on the other hand, the partition plate 65 in the heat preservation frame 6 divides the heat preservation frame 6 into two mounting areas to install related components in the shell 1 respectively, so as to improve the assembly accuracy and consistency of assembly, and further improve the assembly efficiency.

[0328] In an embodiment, the ventilation area of the second connecting port 62 is smaller than the ventilation area of the indoor return air inlet 12;

[0329] The heat preservation frame 6 covers part of the indoor return air inlet 12 inside the shell 1.

[0330] Specifically, by designing the ventilation area of the second connecting port 62 to be smaller than the ventilation area of the indoor return air inlet 12, the length of the first mounting area inside the shell 1 can be extended by the heat preservation frame 6 to meet the installation requirements of the heat exchanger 5 and realize compact design of the structure.

[0331] Wherein, the area of indoor return air outlet 12 blocked by heat insulation frame 6 and the total opening area ratio of indoor return air outlet 12 can be obtained by test according to different air supply requirements to meet the requirement of air conditioning indoor unit return air volume, which is not limited here.

[0332] In another embodiment of the application, as shown in Figure 6 and Figure 10 In order to realize the strong and weak current separation design of the related electrical devices in the shell 1, the air conditioning indoor unit is improved as follows.

[0333] The air conditioning indoor unit in an embodiment of the application comprises a shell 1, wherein an indoor air outlet 11, an indoor return air outlet 12, an outdoor air outlet 13 and an outdoor air inlet 14 are arranged on the shell 1, a fresh air channel is formed between the indoor air outlet 11 and the outdoor air inlet 14, and an exhaust air channel is formed between the indoor return air outlet 12 and the outdoor air outlet 13; the outdoor air outlet 13 and the outdoor air inlet 14 are respectively provided with air valves (not marked).

[0334] The air conditioning indoor unit comprises a full heat exchange core 2 arranged in the shell 1, and the full heat exchange core 2 is configured to perform heat exchange treatment on the air flow flowing through the fresh air channel and the air flow flowing through the exhaust air channel.

[0335] The air conditioning indoor unit comprises two fan assemblies 3, each of which comprises a mounting bracket 31 and a fan 32 arranged on the mounting bracket 31; one of the fan assemblies 3 is arranged in the fresh air channel, and the other of the fan assemblies 3 is arranged in the exhaust air channel.

[0336] The air conditioning indoor unit comprises an electric control box 4 provided with an electric controller, and the electric control box 4 is arranged on the shell 1.

[0337] The shell 1 is provided with a first wiring part 171, the cable of the air valve is wired and extended through the first wiring part 171, the cable of the air valve extends into the electric control box 4 from a first end of the electric control box 4 and is electrically connected to the electric controller; the cable of the fan 32 is arranged outside the first wiring part 171 and extends into the electric control box 4 from a second end of the electric control box 4 and is electrically connected to the electric controller; the first end and the second end of the electric control box 4 are arranged back to back.

[0338] Specifically, the shell 1 is provided with a first wiring part 171, which can form a cable wiring channel for the air valve, and under the action of the first wiring part 171, the cable of the air valve can be isolated from the cable of the fan 32.

[0339] In addition, the cable of the damper and the cable of the fan 32 extend into the electric control box 4 from different ends of the electric control box 4, which more effectively separates the strong and weak electricity.

[0340] In this way, the cable of the fan 32 and the cable of the damper do not cross during the wiring of the shell 1, and the strong and weak electricity are mixed.

[0341] Since the cables of the strong and weak electricity are separated from each other, especially the cable of the damper is separately wired and protected by the first wiring part 171, the safety in use can be improved.

[0342] By arranging the first wiring part 171 and the second wiring part 172 in the shell 1, the cable of the damper is separately wired through the first wiring part 171 and extends into the electric control box 4 from the first end of the electric control box 4, and the cable of the fan 32 is wired outside the first wiring part 171 to be separated from the cable of the damper, and the cable of the fan 32 extends into the electric control box 4 from the second end of the electric control box 4 to effectively separate the strong and weak electricity, thereby improving the safety and reliability of the indoor unit of the air conditioner.

[0343] In another embodiment of the present application, the shell 1 is provided with the first wiring part 171 and the second wiring part 172, the first wiring part 171 and the second wiring part 172 are separated from each other, the cable of the damper is wired through the first wiring part 171 and extends into the electric control box 4 to be electrically connected with the electric controller, and the cable of the fan 32 is wired through the second wiring part 172 and extends into the electric control box 4 to be electrically connected with the electric controller.

[0344] Specifically, in order to simultaneously guide and protect the wiring of the cables of the damper and the fan 32, the first wiring part 171 and the second wiring part 172 can be arranged in the shell 1, the first wiring part 171 and the second wiring part 172 are completely separated and have a sufficient safety distance therebetween to avoid the cables of the strong and weak electricity from affecting each other.

[0345] By arranging the first wiring part 171 and the second wiring part 172 in the shell 1, the cable of the damper is wired through the first wiring part 171 and guided to extend into the electric control box 4, and the cable of the fan 32 is wired through the second wiring part 172 and guided to extend into the electric control box 4, so that the cable of the damper and the cable of the fan 32 are separated from each other to separate the strong and weak electricity, on the one hand, the wiring of the cables in the shell 1 is more regular, and on the other hand, the safety hazard caused by the crossing of the strong and weak electricity can be avoided, thereby improving the safety and reliability of the indoor unit of the air conditioner.

[0346] In an embodiment, the first wiring portion 171 is arranged between the total heat exchange core 2 and the top plate of the shell 1.

[0347] Specifically, the first wiring portion 171 can guide the cable extension wiring of the air valve between the total heat exchange core 2 and the top plate of the shell 1. In this way, the space between the total heat exchange core 2 and the shell 1 can be fully utilized for wiring the cable of the air valve, on the one hand, the cable of the air valve can be wired in a shorter distance from the electric control box 4, on the other hand, the cable of the air valve is shielded by the total heat exchange core 2 to play the role of tidying the wire harness.

[0348] By arranging the first wiring portion 171 between the total heat exchange core 2 and the top plate of the shell 1, the space between the total heat exchange core 2 and the top plate of the shell 1 can be fully utilized for wiring, thereby the use amount of the cable can be effectively saved without long-distance wiring along the side wall of the shell 1.

[0349] In an embodiment, the two fan assemblies 3 are arranged side by side on one side of the shell 1.

[0350] Specifically, by arranging the two fan assemblies 3 on the same side of the shell 1, the cables of the two fans 32 can be wired together, so that the operation process of wiring the two fans 32 respectively can be simplified to improve the assembly efficiency.

[0351] Moreover, the two fans 32 are arranged side by side, which facilitates the wiring of the cables of the fans 32 together to realize the wire harness design of the high-voltage cable.

[0352] In an embodiment, the electric control box 4 is arranged in the air discharge channel, and the electric control box 4 is located at the side of the total heat exchange core 2.

[0353] Specifically, for the electric control box 4, the electric control box 4 is arranged in the air discharge channel formed in the shell 1 to install the electric control box 4 by using the space of the air discharge channel. At the same time, the electric control box 4 is in the air discharge channel, the heat generated by the electric control device in the electric control box 4 can be taken away by the airflow in the air discharge channel to achieve heat dissipation.

[0354] In addition, since the electric control box 4 is arranged at the side of the total heat exchange core 2, the cable of the air valve can enter the electric control box 4 after passing over the total heat exchange core 2 to shorten the length of the wiring.

[0355] By arranging the electric control box 4 at the side of the total heat exchange core 2 and in the air discharge channel, on the one hand, the airflow in the air discharge channel is used to dissipate heat of the electric control box 4, on the other hand, the cable extending through the top of the total heat exchange core 2 can directly extend into the electric control box 4 at the side to shorten the extension length of the cable.

[0356] In an embodiment, the casing 1 is provided with a threading plate 17, which is arranged between the full-heat exchange core 2 and the top plate of the casing 1.

[0357] The threading plate 17 is provided with a first wiring groove, in which the cable of the air valve is arranged. The first wiring groove is a first wiring part 171.

[0358] Specifically, in order to facilitate the formation of the first wiring part 171 in the casing 1, a separate threading plate 17 can be used to form the first wiring part 171. The threading plate 17 is provided with a first wiring groove for the air valve cable, which limits and guides the air valve cable through the first wiring groove. At the same time, the first wiring groove allows the air valve cable to be independent of the cable of the fan 32 and prevents cross-contact.

[0359] During the assembly of the casing 1, the threading plate 17 is arranged against the top plate of the casing 1 and can be fixedly installed on the top plate of the casing 1 by screws. The threading plate 17 is made of insulating material to improve the wiring safety of the cable.

[0360] By arranging the threading plate 17 between the full-heat exchange core 2 and the top plate of the casing 1, the threading plate 17 is provided with a first wiring groove to meet the wiring requirements of the air valve cable, thereby realizing the function of the first wiring part 171.

[0361] In an embodiment, the threading plate 17 is provided with a second wiring groove, which is arranged separately from the first wiring groove. At least one cable of the fan 32 is arranged in the second wiring groove.

[0362] Specifically, in order to meet the wiring requirements of the fan 32 cable through the threading plate 17, a second wiring groove can be provided on the threading plate 17, which is separated from the first wiring groove to realize the separate arrangement of strong and weak electricity.

[0363] By arranging the second wiring groove separately from the first wiring groove on the threading plate 17, the second wiring groove can meet the wiring requirements of the fan 32 cable, thereby realizing the function of the second wiring part 172.

[0364] In an embodiment, the first wiring groove and the second wiring groove are respectively provided with a wire clamp.

[0365] Specifically, after the cable is wired in place in the first wiring groove and the second wiring groove, the wire clamp can be used to limit the cable in the wiring groove from the outside, thereby preventing the cable from detaching from the wiring groove.

[0366] By arranging the wired card in the first wiring groove and the second wiring groove, the wired card can restrict the cable in the wiring groove to prevent the cable from being separated from the wiring groove, thereby improving the reliability of the wiring.

[0367] In one embodiment, in the case that the heat preservation frame 6 is arranged in the shell 1, a wiring groove 69 is further arranged on the heat preservation frame 6 in the second mounting area, and the wiring groove 69 is arranged between the total heat exchange core 2 and the electric control box 4; the cable of the air valve is also arranged in the wiring groove 69.

[0368] Specifically, after the cable of the air valve passes between the total heat exchange core 2 and the top plate of the shell 1, the cable is further guided to extend into the electric control box 4 through the wiring groove 69 formed on the heat preservation frame 6.

[0369] By additionally arranging the wiring groove 69 on the heat preservation frame 6, the wiring groove 69 can cooperate with the first wiring part 171 to wire the cable of the air valve, thereby fully utilizing the structure of the heat preservation frame 6 to further meet the wiring requirements of the cable of the air valve, so as to improve the wiring quality of the cable.

[0370] In one embodiment of the present application, as shown in Figures 4-6 In order to meet the requirements of the internal circulation of air flow and simplify the structure in the shell 1 to reduce the assembly cost and manufacturing cost, the air conditioner indoor unit is improved as follows.

[0371] The air conditioner indoor unit provided by the present application comprises a shell 1, and the shell 1 is provided with an indoor air outlet 11, an indoor air return inlet 12, an outdoor air outlet 13 and an outdoor air inlet 14.

[0372] The air conditioner indoor unit comprises a total heat exchange core 2, and the total heat exchange core 2 is provided with an exhaust air heat exchange flow channel and a fresh air heat exchange flow channel, and the exhaust air heat exchange flow channel and the fresh air heat exchange flow channel are in thermal conduction with each other; an exhaust air passage is formed between the indoor air return inlet 12, the exhaust air heat exchange flow channel and the outdoor air outlet 13 in the shell 1, and a fresh air passage is formed between the outdoor air inlet 14, the fresh air heat exchange flow channel and the indoor air outlet 11 in the shell 1.

[0373] The air conditioner indoor unit comprises a heat exchanger 5, and the heat exchanger 5 is configured to perform heat exchange treatment on the air flow flowing through the fresh air passage.

[0374] The air conditioner indoor unit comprises two fan assemblies 3, and each fan assembly 3 comprises a mounting bracket 31 and a fan 32, and the fan 32 is arranged on the mounting bracket 31; one fan assembly 3 is arranged in the fresh air passage, and the other fan assembly 3 is arranged in the exhaust air passage.

[0375] The second air door 161 is arranged between the inlet of the exhaust air heat exchange flow channel and the outlet of the fresh air heat exchange flow channel of the full-heat exchange core 2, and is configured to selectively communicate the indoor air outlet 11 and the indoor air return 12.

[0376] Specifically, in order to realize the communication between the indoor air return 12 and the indoor air outlet 11 when the exhaust air channel and the fresh air channel are in the internal circulation process, the second air door 161 is directly arranged between the inlet of the exhaust air heat exchange flow channel and the outlet of the fresh air heat exchange flow channel of the full-heat exchange core 2.

[0377] When the second air door 161 is in the closed state, the indoor air return 12 and the indoor air outlet 11 are isolated, so that the exhaust air channel and the fresh air channel are isolated to meet the requirement of independent air inlet and outlet between indoor and outdoor. At this time, the air valves of the outdoor air inlet 14 and the outdoor air outlet 13 are in the open state.

[0378] When internal circulation is needed, the second air door 161 can be opened, and the second air door 161 communicates the indoor air return 12 and the indoor air outlet 11 at the full-heat exchange core 2. At this time, the air valves of the outdoor air inlet 14 and the outdoor air outlet 13 are in the closed state.

[0379] By arranging the second air door 161 between the inlet of the exhaust air heat exchange flow channel and the outlet of the fresh air heat exchange flow channel of the full-heat exchange core 2, the second air door 161 is used to control the communication between the indoor air return 12 and the indoor air outlet 11, so as to meet the requirement that when the indoor temperature does not reach the set temperature value, the second air door 161 is opened to realize the communication between the indoor air return 12 and the indoor air outlet 11, so as to realize the rapid adjustment of the indoor temperature, thereby improving the user experience. In addition, since the second air door 161 is installed at the full-heat exchange core 2 and is spaced apart from the inlet of the exhaust air heat exchange flow channel and the outlet of the fresh air heat exchange flow channel, the internal circulation air duct does not need to be additionally arranged, the use amount of parts is reduced, and the assembly cost and manufacturing cost are reduced.

[0380] In an embodiment, the outlet side of the fresh air heat exchange flow channel of the full-heat exchange core 2 is provided with a second spacing plate 15, and the other side of the outlet of the fresh air heat exchange flow channel of the full-heat exchange core 2 is provided with a first spacing plate 16.

[0381] The second spacing plate 15 and the first spacing plate 16 are configured to separate the exhaust air channel and the fresh air channel, the second spacing plate 15 is arranged between the indoor air outlet 11 and the outdoor air outlet 13, and the first spacing plate 16 is further arranged between the indoor air return 12 and the indoor air outlet 11.

[0382] The first partition plate 16 is provided with a communication port, and the second damper 161 is arranged in the communication port.

[0383] Specifically, the second partition plate 15 and the first partition plate 16 can meet the installation requirements of installing the total heat exchange core 2 in the shell 1 and isolating the exhaust air passage and the fresh air passage from each other. The second damper 161 is arranged in the communication port on the first partition plate 16, so as to facilitate the installation of the second damper 161 in the shell 1.

[0384] By arranging the second partition plate 15 and the first partition plate 16, the total heat exchange core 2 can isolate the exhaust air passage and the fresh air passage from each other at the outlet of the fresh air heat exchange flow channel. The communication port arranged on the first partition plate 16 can meet the requirement of the communication between the exhaust air passage and the fresh air passage, so as to realize the communication between the indoor return air port 12 and the indoor outlet air port 11 and realize the internal circulation. The second damper 161 is arranged at the communication port, so as to realize the start and stop control of the internal circulation, and the second damper 161 is convenient to install and fix.

[0385] In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0386] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An air conditioner indoor unit characterized by comprising: The air conditioner indoor unit comprises: a shell, wherein an indoor air outlet, an indoor air return, an outdoor air outlet and an outdoor air inlet are arranged on the shell, and a heat exchange cavity is arranged in the shell, and the indoor air outlet is communicated with the heat exchange cavity; a total heat exchange core, wherein an exhaust air heat exchange flow channel and a fresh air heat exchange flow channel are arranged on the total heat exchange core, and the exhaust air heat exchange flow channel and the fresh air heat exchange flow channel are in thermal conduction with each other; the total heat exchange core is arranged in the shell, a fresh air channel is formed between the indoor air outlet, the heat exchange cavity, the fresh air heat exchange flow channel and the outdoor air inlet, and an exhaust air channel is formed between the indoor air return, the exhaust air heat exchange flow channel and the outdoor air outlet; a heat exchanger, wherein the heat exchanger is arranged in the heat exchange cavity, and the heat exchanger is configured to perform heat exchange treatment on air flow entering the heat exchange cavity; two fan assemblies, wherein one fan assembly is arranged in the fresh air channel, and the other fan assembly is arranged in the exhaust air channel; wherein the heat exchange cavity is configured to selectively communicate with the exhaust air heat exchange flow channel, and in the state of communicating with the exhaust air heat exchange flow channel, part of the air flow after heat exchange treatment by the heat exchanger is delivered into the exhaust air heat exchange flow channel.

2. An air conditioner indoor unit characterized by comprising: The air conditioner indoor unit comprises: a shell, wherein an indoor air outlet, an indoor air return, an outdoor air outlet and an outdoor air inlet are arranged on the shell, and a heat exchange cavity is arranged in the shell, and the indoor air outlet is communicated with the heat exchange cavity; a total heat exchange core, wherein an exhaust air heat exchange flow channel and a fresh air heat exchange flow channel are arranged on the total heat exchange core, and the exhaust air heat exchange flow channel and the fresh air heat exchange flow channel are in thermal conduction with each other; the total heat exchange core is arranged in the shell, a fresh air channel is formed between the indoor air outlet, the heat exchange cavity, the fresh air heat exchange flow channel and the outdoor air inlet, and an exhaust air channel is formed between the indoor air return, the exhaust air heat exchange flow channel and the outdoor air outlet; a heat exchanger, wherein the heat exchanger is arranged in the heat exchange cavity, and the heat exchanger is configured to perform heat exchange treatment on air flow entering the heat exchange cavity; two fan assemblies, wherein one fan assembly is arranged in the fresh air channel, and the other fan assembly is arranged in the exhaust air channel; the air conditioner indoor unit is configured to, in a first dehumidification mode, output the air flow input from the outdoor air inlet from the indoor air outlet in sequence via the fresh air heat exchange flow channel and the heat exchanger; the air conditioner indoor unit is configured to, in a second dehumidification mode, output part of the air flow after heat exchange from the indoor air outlet, and output the remaining part of the air flow after heat exchange from the exhaust air heat exchange flow channel. 3.The indoor unit of the air conditioner according to claim 1 or 2, characterized by, a partition plate is arranged in the shell, the partition plate surrounds the inner side of the indoor air outlet, and the partition plate divides the heat exchange cavity in the shell; a first ventilation opening and a second ventilation opening are arranged on the partition plate; the first ventilation opening is arranged on the windward side of the heat exchanger, and is configured to deliver air flow to the windward surface of the heat exchanger. The second air vent is arranged at the leeward side of the heat exchanger and is configured to deliver the airflow after heat exchange through the heat exchanger to the exhaust heat exchange flow channel. 4.The indoor unit of the air conditioner according to claim 3, characterized by, A first air door is arranged at the second air vent and is configured to open and close the second air vent. 5.The indoor unit of the air conditioner according to claim 3, characterized in that, A first partition plate is arranged in the shell and is connected between the total heat exchange core and the partition plate. One end of the first partition plate separates the exhaust heat exchange flow channel and the fresh air heat exchange flow channel from each other, and the other end of the first partition plate separates the first air vent and the second air vent from each other. 6.The indoor unit of the air conditioner according to claim 5, characterized in that, A third air vent is arranged on the first partition plate and communicates the fresh air channel and the exhaust air channel. A second air door is further arranged in the third air vent and is configured to open and close the third air vent. 7.The indoor unit of the air conditioner according to claim 3, characterized by, An air path switching component is further arranged in the shell and is configured to selectively communicate the exhaust heat exchange flow channel and the heat exchange cavity. 8.The indoor unit of the air conditioner according to claim 7, characterized by, The air path switching component is arranged between the total heat exchange core and the partition plate. The air path switching component is further configured to selectively communicate the fresh air channel and the exhaust air channel. 9.The indoor unit of the air conditioner according to claim 1 or 2, characterized by, The fresh air heat exchange flow channel of the total heat exchange core is arranged obliquely and is further configured to selectively perform condensation and dehumidification treatment on the airflow flowing therethrough. And / or, a condensate collecting disc is further arranged at the bottom of the total heat exchange core and is configured to collect the condensate flowing out of the fresh air heat exchange flow channel. 10.The indoor unit of the air conditioner according to claim 1 or 2, characterized by, An electric heating component is further arranged in the shell, the electric heating component is arranged close to the indoor air outlet, a space is formed between the electric heating component and the heat exchanger, and the electric heating component is configured to heat the airflow flowing therethrough and output from the indoor air outlet.

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