Air conditioner indoor unit

Abstract

The utility model discloses an indoor unit of an air conditioner in the field of air conditioning technology, comprising a housing, a fan, a water tray, an evaporator, an air inlet, an air outlet, an air inlet duct and an air outlet duct, the housing having a cavity, an air inlet and an air outlet, the fan, the water tray and the evaporator being located in the cavity, the air inlet being located at the bottom of the housing, the air outlet being located at the bottom or side of the housing, the water tray and the evaporator being arranged in sequence along the direction of gas entering the air inlet, the bottom of the water tray being sealedly connected to the inner wall of the bottom of the housing, the evaporator being sealedly connected to the top of the water tray, a vent and a water receiving trough being provided at the top of the water tray, the bottom of the water tray being connected to the vent, the air inlet duct comprising the air inlet arranged in sequence, the connecting area between the bottom of the water tray and the vent of the water tray, the vent at the top of the water tray and the inside of the evaporator, the fan being arranged in the air inlet duct, and the air outlet duct being connected to the air inlet duct through the evaporator. The utility model solves the technical problem of the limited installation position of the existing air conditioner.

Description

Technical Field

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

[0002] At present, household air conditioners are mainly divided into two categories, one is split wall-mounted type, and the other is cabinet type.

[0003] At present, the split wall-mounted indoor unit includes a shell, a front panel, an evaporator, a water tray, a fan, an air inlet, an air outlet and an air duct, wherein the front panel is installed at the front of the shell, the evaporator, the water tray and the fan are installed in the cavity formed by the shell and the front panel, the air duct is arranged in the cavity formed by the shell and the front panel, the fan is installed in the air duct, the air outlet is arranged on the shell or the front panel, an air supply guide plate is arranged at the air outlet, the air inlet is arranged on the top plate of the shell, and a grille and an air filter are arranged at the air inlet. The indoor unit of the air conditioner of this structure can usually only be installed in the middle and upper part of the wall of the room, and cannot be close to the ceiling, otherwise it will affect the air intake of the air conditioner, which limits the installation method and installation position of the air conditioner.

[0004] Currently, cabinet-type indoor units, due to their floor-standing design and large size, need to occupy a certain amount of floor space indoors, which may be inconvenient for rooms with limited area or compact layout.

[0005] However, in the process of house decoration and layout, users hope to install the air conditioner indoor unit in a specific position according to their needs, such as installing it against the wall at the corner of the ceiling, or not installing it on the wall, hanging it between the top of the wardrobe and the ceiling, making full use of the space above the wardrobe, or embedding it in the ceiling. However, the existing split wall-mounted and cabinet-type air conditioner indoor units are obviously not installed in the above positions due to the influence of the air duct or structural design. Therefore, there is an urgent need for an air conditioner indoor unit with a compact structure that can be used for hanging or embedding to meet user needs. Utility Model Content

[0006] In order to solve the technical problems existing in the existing air-conditioning indoor unit, the utility model provides an air-conditioning indoor unit which has a compact structure and can be used for hoisting or embedding.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] The indoor unit of the air conditioner includes a shell, a fan, a water tray, an evaporator, an air inlet, an air outlet, an air inlet duct and an air outlet duct. The shell has a cavity, an air inlet and an air outlet. The fan, the water tray and the evaporator are located in the cavity. The air inlet is located at the bottom of the shell, and the air outlet is located at the bottom or side of the shell. The water tray and the evaporator are arranged in sequence along the direction of gas entering the air inlet. The bottom of the water tray is sealed with the inner wall of the bottom of the shell, and the evaporator is sealed with the top of the water tray. The top of the water tray is provided with a vent. The bottom of the pan is connected with the vent, and a water collecting trough is provided on the top of the water collecting pan, which surrounds the vent. The air inlet duct includes the air inlet arranged in sequence, the connecting area between the bottom of the water collecting pan and the vent of the water collecting pan, the vent on the top of the water collecting pan and the inside of the evaporator. The fan is arranged in the air inlet duct, and the gap between the evaporator and the inner wall of the side of the shell, as well as the gap between the water collecting pan and the inner wall of the side of the shell together constitute the air outlet duct, which is connected with the air outlet, and the air outlet duct is connected with the air inlet duct through the evaporator.

[0009] Furthermore, a cavity is provided at the bottom of the water receiving tray, the cavity is communicated with the vent, and the cavity at least partially accommodates the fan.

[0010] Furthermore, fins are provided on the evaporator, and the gaps between the fins connect the air inlet duct with the air outlet duct.

[0011] Furthermore, it also includes an electric heating component, and a mounting structure is provided on the top of the water receiving tray for mounting the electric heating component.

[0012] Furthermore, it also includes a first sealing plate and a second sealing plate, the first sealing plate and the second sealing plate are vertically arranged, the evaporator is semi-enclosed, the evaporator cross-section is U-shaped, the two open ends of the U-shaped opening of the evaporator are used to connect with the refrigerant pipe, the top of the evaporator is sealed to the top inner wall of the shell, the first sealing plates are respectively sealed installed at the two open ends of the U-shaped opening of the evaporator, the first sealing plates are respectively sealed to the top of the water receiving tray, the side inner wall of the shell and the top inner wall of the shell, the second sealing plate is sealed installed on the side opposite to the U-shaped opening of the evaporator and corresponds to the first sealing plate, the second sealing plate is respectively sealed to the top of the water receiving tray, the side inner wall of the shell and the top inner wall of the shell, the side of the water receiving tray corresponding to the first sealing plate, and the side of the water receiving tray corresponding to the second sealing plate are respectively sealed to the side inner wall of the shell.

[0013] Furthermore, it also includes a support member, the water receiving tray and the bottom inner wall of the shell are sealed through the support member, an elastic seal is arranged between the top of the support member and the water receiving tray, and an elastic seal is arranged between the bottom of the support member and the bottom inner wall of the shell.

[0014] Furthermore, both the inner wall and the outer wall of the shell top are provided with gaskets.

[0015] Furthermore, the air inlet and the air outlet are both located at the bottom of the shell, and there are two air outlets located on both sides of the air inlet. The air outlet is provided with a swing blade structure.

[0016] Furthermore, it also includes a water pump assembly, which is installed on the outer wall of the side of the shell and is used to extract condensed water in the water receiving tray.

[0017] Furthermore, it also includes an electric control component, which is installed on the outer wall of the side of the shell.

[0018] The beneficial effects of the utility model are:

[0019] 1. The air inlet is located at the bottom of the shell, and the air outlet is located at the bottom or side of the shell. Compared with the split wall-mounted air conditioner, this layout of bottom air inlet and bottom or side air outlet no longer requires air inlet from the top, so it can be suspended between the ceiling and the wardrobe, or embedded in the ceiling, or suspended on the top of a narrow corridor, so that the indoor unit of the air conditioner can adapt to a relatively narrow space and more installation positions. At the same time, the water tray and the evaporator are arranged in sequence along the direction of gas entering the air inlet, and the fan is arranged in the air inlet duct, which simplifies the arrangement of the air inlet and outlet ducts. The air inlet and outlet ducts are arranged in parallel, and the space is reasonably used, making the entire indoor unit of the air conditioner small in size and compact in structure. In addition, the bottom air outlet can prevent cold air from blowing directly to the human body, especially the head and neck, which is particularly friendly for sensitive people or people with cervical spine problems.

[0020] 2. A cavity is provided at the bottom of the water tray, which is connected to the vent. The cavity at least partially accommodates the fan. By partially or completely embedding the fan in the cavity at the bottom of the water tray, a compact and space-saving design is achieved, while reducing the overall height of the air conditioner, making it easier to install in a limited space. In addition, the cavity is equivalent to providing a relatively independent space for the fan, physically separating the fan from other parts of the air conditioner. When the fan is running, the vibration generated is buffered and dispersed by the air in the cavity and the wall of the cavity, rather than being directly transmitted to the air conditioner body or installation surface, thereby reducing the structural noise caused by vibration and improving the quiet performance of the air conditioner.

[0021] 3. The evaporator is equipped with fins. The gaps between the fins connect the air inlet and the air outlet. The fins greatly increase the heat exchange area of ​​the evaporator and improve the heat exchange efficiency, thereby speeding up the cooling or heating speed and improving the energy efficiency of the air conditioner. The gaps between the fins allow the air to flow smoothly, ensuring the effective connection between the air inlet and the air outlet, and ensuring that the air is fully heat exchanged in the evaporator.

[0022] 4. It also includes an electric heating component. A mounting structure is provided on the top of the water tray for installing the electric heating component. The addition of the electric heating component significantly reduces the heating efficiency of the traditional heat pump system when the indoor unit of the air conditioner is in a low temperature environment, especially when the outdoor temperature is lower than the minimum ambient temperature for the normal operation of the air conditioner. At this time, the electric heating component, as an auxiliary heat source, can directly convert electrical energy into thermal energy, provide additional heat for the room, make up for the insufficient heating of the heat pump system, and ensure that the indoor temperature is maintained at the set value. The electric heating component has a fast response characteristic and can output a large amount of heat in a short time to meet the user's demand for rapid heating, especially in scenarios where the room temperature drops suddenly or the indoor temperature needs to be quickly increased. The electric heating component is located above the fan outlet, which can effectively disperse the wind to achieve the purpose of air diversion and prevent the gas from blowing directly to the top of the shell, causing condensation and aging of the gasket after a long time.

[0023] 5. The evaporator is a semi-enclosed structure with a U-shaped cross section. The two open ends of the U-shaped opening of the evaporator are used to connect with the refrigerant pipe to ensure that the refrigerant enters one open end and flows out of the other open end, which simplifies the structure and improves the heat exchange effect and the utilization efficiency of the refrigerant. The first sealing plate is sealed and installed at the two open ends of the U-shaped opening of the evaporator. The second sealing plate is sealed and installed on the side opposite to the U-shaped opening of the evaporator and corresponds to the first sealing plate. The evaporator, the top of the water tray, the first sealing plate, the second sealing plate, the inner wall of the side of the shell and the inner wall of the top of the shell together construct a chamber. This design ensures that the gas entering from the air inlet can only flow along the predetermined path, that is, it must pass through the evaporator for heat exchange and cannot bypass the evaporator to directly enter the air outlet. In this way, all air entering the air conditioner is forced to fully contact the evaporator to complete the heat exchange process.

[0024] 6. The water tray is sealed and connected to the inner wall of the bottom of the shell through a support. An elastic seal is provided between the top of the support and the water tray, and an elastic seal is provided between the bottom of the support and the inner wall of the bottom of the shell. The use of the support enhances the stability of the connection between the water tray and the bottom of the shell, avoiding displacement or damage of the water tray due to gravity or vibration. The elastic seal has good buffering and vibration absorption performance, which can absorb and slow down the vibration generated by the water tray, fan and even the entire air conditioning system during operation, reduce the degree of vibration transmission to the shell, and thus reduce the operating noise.

[0025] 7. The inner and outer walls of the top of the shell are both padded. The inner wall padded helps to absorb and isolate the noise generated by the operation of internal components, improving the quiet performance of the air conditioner. The outer wall padded can play a role in heat preservation and insulation, effectively preventing condensation.

[0026] 8. The air inlet and outlet are both located at the bottom of the shell. There are two air outlets, located on both sides of the air inlet. The air outlet is equipped with a swing blade structure. The double air outlet design enhances the flexibility of air flow distribution. By adjusting the swing blade angle, multiple air supply modes such as left and right, downward, concentrated or dispersed can be achieved to adapt to different room layouts and user needs. The swing blade structure can also effectively avoid direct cold wind and improve the comfort of use.

[0027] 9. It also includes a water pump assembly, which is installed on the outer wall of the side of the shell and is used to extract condensed water in the water tray. The configuration of the water pump assembly enables the air conditioner to have an active drainage function. Even if the amount of condensed water is large or the installation position is not conducive to gravity drainage, it can ensure that the condensed water is discharged in a timely and effective manner, avoiding safety hazards and performance degradation caused by water accumulation.

[0028] 10. It also includes an electric control component, which is installed on the outer wall of the side of the shell: the electric control component centrally manages the various operating parameters and functions of the air conditioner, which is convenient for user operation and fault diagnosis. It is installed on the outer wall of the side of the shell to facilitate maintenance personnel to carry out maintenance, while preventing the electric control component from contacting the humid air inside the air conditioner, thereby improving the reliability and life of the electrical system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural explosion diagram of the indoor unit of the air conditioner of the utility model;

[0030] Figure 2 A cross-sectional view of an indoor unit of an air conditioner according to the present utility model;

[0031] Figure 3 yes Figure 2 The front view in;

[0032] Figure 4 It is an assembly diagram of the indoor unit of the air conditioner of the utility model with the top of the shell removed;

[0033] Figure 5 It is an assembly diagram of the indoor unit of the air conditioner of the utility model with the side of the shell removed;

[0034] Marked in the figure are, 1-housing, 2-fan, 3-water tray, 4-evaporator, 5-air inlet, 6-air outlet, 7-ventilation port, 8-electric heating component, 9-mounting structure, 10-first sealing plate, 11-second sealing plate, 12-support member, 13-elastic sealing member, 14-water pump assembly, 15-electric control assembly, 16-air inlet duct, 17-air outlet duct, 18-swing blade structure. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions and advantages of the embodiments of the present application more clearly expressed, the present invention is further described below in conjunction with the accompanying drawings.

[0036] First of all, it needs to be stated that the technical solutions of the embodiments of the present application are clearly and completely described. The described embodiments are part of the embodiments of the present application, rather than limitations of the present utility model. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present application.

[0037] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by terms such as “first”, “second”, “upper”, “lower”, “left”, “right”, “inner”, “outer”, “axial” or “radial” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They are not intended to indicate or imply that the device or element referred to must have a specific orientation structure and operation, and therefore cannot be understood as a limitation on the present invention.

[0038] It should be noted that, in the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection: it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Reference Figures 1 to 5 , the utility model provides an indoor unit of an air conditioner.

[0040] In some embodiments, an indoor unit of an air conditioner includes a shell 1, a fan 2, a water tray 3, an evaporator 4, an air inlet 5, an air outlet 6, an air inlet duct 16 and an air outlet duct 17. The shell 1 has a cavity, an air inlet 5 and an air outlet 6. The fan 2, the water tray 3 and the evaporator 4 are located in the cavity. The air inlet 5 is located at the bottom of the shell 1, and the air outlet 6 is located at the bottom or side of the shell 1. The water tray 3 and the evaporator 4 are arranged in sequence along the gas entry direction of the air inlet 5. The bottom of the water tray 3 is sealed with the inner wall of the bottom of the shell 1, the evaporator 4 is sealed with the top of the water tray 3, and the top of the water tray 3 is provided with a vent 7, the bottom of the water receiving pan 3 is connected with the vent 7, the top of the water receiving pan 3 is provided with a water receiving groove, and the water receiving groove surrounds the vent 7. The air inlet duct 16 includes the air inlet 5 arranged in sequence, the connecting area between the bottom of the water receiving pan 3 and the vent 7 of the water receiving pan 3, the vent 7 at the top of the water receiving pan 3 and the inside of the evaporator 4, the fan 2 is arranged in the air inlet duct 16, the gap between the evaporator 4 and the side inner wall of the shell 1, and the gap between the water receiving pan 3 and the side inner wall of the shell 1 together constitute the air outlet duct 17, the air outlet duct 17 is connected with the air outlet 6, and the air outlet duct 17 is connected with the air inlet duct 16 through the evaporator 4.

[0041] The air outlet 6 is located at the bottom or side of the shell 1, and is connected to the air outlet duct 17. Such a design ensures that the air conditioner has a larger air outlet range when it is hoisted, avoiding single and directional air outlet in a certain direction, affecting the cooling or heating effect, and at the same time, the airflow blows directly, affecting the user's comfort.

[0042] The water receiving pan 3 and the evaporator 4 are arranged in sequence along the gas entry direction of the air inlet 5. The bottom of the water receiving pan 3 is sealed and connected to the bottom inner wall of the shell 1, and the evaporator 4 is sealed and connected to the top of the water receiving pan 3. They are arranged in sequence and in an orderly manner, which reduces the volume of the air conditioner. In addition, the sealed connection is adopted to ensure the relative independence of the air inlet 16 and the air outlet 17. The air inlet 16 and the air outlet 17 utilize the gap between the parts and are arranged in an arranged manner, which simplifies the air duct and reduces the overall volume of the air conditioner. In this way, the connection between the air inlet 16 and the air outlet 17 is achieved only through the evaporator 4, and all airflows entering the air inlet 16 are forced to pass through the evaporator 4 for heat exchange, and cannot bypass the evaporator 4 to directly enter the air outlet 17. The gas after heat exchange in the evaporator 4 flows to the air outlet 17 and is discharged into the room through the air outlet 6.

[0043] The fan 2 is arranged in the air inlet duct 16. The fan 2 can be arranged in the area between the air inlet 5 and the water receiving tray 3, or can be arranged inside the water receiving tray 3, or between the water receiving tray 3 and the evaporator 4, so as to realize the extraction of gas through the air inlet 5.

[0044] In some embodiments, a cavity is provided at the bottom of the water receiving tray 3 , the cavity is communicated with the vent 7 , and the cavity at least partially accommodates the fan 2 .

[0045] The cavity at the bottom of the water tray 3 at least partially accommodates the fan 2, that is, partially or completely accommodates the fan 2. Such a design achieves a compact structure and saves space, while reducing the overall height of the air conditioner, making it easy to install in a limited space. At the same time, the cavity also has the effect of reducing the noise of the fan 2, ensuring that users have good use comfort.

[0046] In some embodiments, fins are provided on the evaporator 4, and the gaps between the fins connect the air inlet 16 with the air outlet 17. The fins are provided on the outer wall of the heat exchange tube of the evaporator 4, and there is a certain gap between the fins. The fins increase the contact area between the airflow and the evaporator 4 and improve the heat exchange efficiency.

[0047] In some embodiments, an electric heating component 8 is also included, and a mounting structure 9 is provided on the top of the water tray 3 for mounting the electric heating component 8. The electric heating component 8 is used for auxiliary heating, and its position setting can also prevent the airflow from directly blowing on the top of the housing 1, and prevent a large temperature difference between the inner wall and the outer wall of the top of the housing 1, thereby generating condensation, and the condensation drips into the electrical components, causing safety accidents.

[0048] In some embodiments, it also includes a first sealing plate 10 and a second sealing plate 11, the first sealing plate 10 and the second sealing plate 11 are vertically arranged, the evaporator 4 is semi-enclosed, the cross-section of the evaporator 4 is U-shaped, the two open ends of the U-shaped opening of the evaporator 4 are used to connect with the refrigerant pipe, the top of the evaporator 4 is sealedly connected to the top inner wall of the shell 1, the first sealing plate 10 is respectively sealedly installed at the two open ends of the U-shaped opening of the evaporator 4, the first sealing plate 10 is respectively sealedly connected to the top of the water receiving tray 3, the side inner wall of the shell 1 and the top inner wall of the shell 1, the second sealing plate 11 is sealedly installed on the side opposite to the U-shaped opening of the evaporator 4, and corresponds to the first sealing plate 10, the second sealing plate 11 is respectively sealedly connected to the top of the water receiving tray 3, the side inner wall of the shell 1 and the top inner wall of the shell 1, the side of the water receiving tray 3 corresponding to the first sealing plate 10, and the side of the water receiving tray 3 corresponding to the second sealing plate 11 are respectively sealedly connected to the side inner wall of the shell 1.

[0049] Such a design enables the evaporator 4, the top of the water tray 3, the first sealing plate 10, the second sealing plate 11, the inner wall of the side of the housing 1 and the inner wall of the top of the housing 1 to form a chamber. Only the evaporator 4 is ventilated in this chamber. This design ensures that the gas entering from the air inlet 16 can only flow along a predetermined path, that is, it must pass through the evaporator 4 for heat exchange and cannot bypass the evaporator 4 to directly enter the air outlet 17. In this way, all the air entering the air conditioner is forced to fully contact the evaporator 4 to complete the heat exchange process.

[0050] In some embodiments, a support member 12 is further included, and the water tray 3 is sealed and connected to the inner wall of the bottom of the shell 1 through the support member 12. An elastic seal 13 is provided between the top of the support member 12 and the water tray 3, and an elastic seal 13 is provided between the bottom of the support member 12 and the inner wall of the bottom of the shell 1. The elastic seal 13 can use a thickened gasket, a rubber pad or a sealing pad made of other rubber materials. The elastic seal 13 has good buffering and vibration absorption performance, and can absorb and slow down the vibration generated by the water tray 3, the fan 2 and even the entire air-conditioning system during operation, reduce the degree of vibration transmission to the shell 1, and thus reduce the operating noise.

[0051] In some embodiments, both the inner wall and the outer wall of the top of the housing 1 are provided with pads. The inner wall pad helps to absorb and isolate the noise generated by the operation of the internal components, improving the quiet performance of the air conditioner, and the outer wall pad can play a role in heat preservation and insulation, effectively preventing condensation.

[0052] In some embodiments, the air inlet 5 and the air outlet 6 are both located at the bottom of the housing 1. There are two air outlets 6, which are located on both sides of the air inlet 5. The air outlet 6 is provided with a swing blade structure 18. This swing blade structure 18 should be well known to those skilled in the art, and can be selected and designed according to the application conditions, so the swing blade structure 18 should be clear. The dual air outlet 6 design enhances the flexibility of air flow distribution. By adjusting the swing blade angle, a variety of air supply modes such as left and right, downward, concentrated or dispersed can be achieved to adapt to different room layouts and user needs. The swing blade structure 18 can also effectively prevent cold air from blowing directly, improving the comfort of use.

[0053] In some embodiments, a water pump assembly 14 is also included. The water pump assembly 14 is installed on the outer wall of the side of the housing 1 and is used to extract condensed water in the water receiving tray 3.

[0054] In some embodiments, an electric control component 15 is also included, and the electric control component 15 is installed on the side outer wall of the housing 1. Installing it on the side outer wall of the housing 1 can facilitate maintenance on the one hand, and on the other hand, prevent the electric control component 15 from contacting the humid air inside the indoor unit of the air conditioner, thereby improving the reliability and life of the electrical system.

Claims

1. An indoor unit of an air conditioner, comprising a housing (1), a fan (2), a water tray (3), an evaporator (4), an air inlet (5), an air outlet (6), an air inlet duct (16) and an air outlet duct (17), wherein the housing (1) has a cavity, an air inlet (5) and an air outlet (6), and the fan (2), the water tray (3) and the evaporator (4) are located in the cavity, and wherein: The air inlet (5) is located at the bottom of the shell (1), the air outlet (6) is located at the bottom or side of the shell (1), the water receiving tray (3) and the evaporator (4) are arranged in sequence along the gas entry direction of the air inlet (5), the bottom of the water receiving tray (3) is sealedly connected to the inner wall of the bottom of the shell (1), the evaporator (4) is sealedly connected to the top of the water receiving tray (3), a vent (7) is provided at the top of the water receiving tray (3), the bottom of the water receiving tray (3) is connected to the vent (7), a water receiving trough is provided at the top of the water receiving tray (3), the water receiving trough surrounds the vent (7), and the air inlet duct (16) The invention comprises an air inlet (5), a communicating area between the bottom of a water receiving tray (3) and a vent (7) of the water receiving tray (3), a vent (7) at the top of the water receiving tray (3), and the interior of an evaporator (4) arranged in sequence; a fan (2) is arranged in an air inlet duct (16); a gap between the evaporator (4) and a side inner wall of a shell (1), and a gap between the water receiving tray (3) and a side inner wall of the shell (1) together form an air outlet duct (17); the air outlet duct (17) is connected to the air outlet (6); and the air outlet duct (17) is connected to the air inlet duct (16) via the evaporator (4).

2. The air conditioner indoor unit according to claim 1, characterized in that: A cavity is provided at the bottom of the water receiving tray (3), the cavity is connected to the vent (7), and the cavity at least partially accommodates the fan (2).

3. The air conditioner indoor unit according to claim 1, characterized in that: The evaporator (4) is provided with fins, and the gaps between the fins connect the air inlet duct (16) and the air outlet duct (17).

4. The air conditioner indoor unit according to claim 1, characterized in that: It also includes an electric heating component (8), and a mounting structure (9) is provided on the top of the water receiving tray (3) for mounting the electric heating component (8).

5. The air conditioner indoor unit according to claim 1, characterized in that: The evaporator (4) also includes a first sealing plate (10) and a second sealing plate (11), the first sealing plate (10) and the second sealing plate (11) are arranged vertically, the evaporator (4) is semi-enclosed, the cross section of the evaporator (4) is U-shaped, the two open ends of the U-shaped opening of the evaporator (4) are used to connect with the refrigerant pipe, the top of the evaporator (4) is sealed and connected with the top inner wall of the shell (1), the first sealing plate (10) is respectively installed in a sealing manner at the two open ends of the U-shaped opening of the evaporator (4), and the first sealing plate (10) is respectively connected with the top of the water receiving tray (3) and the shell (1). The side inner wall of the housing (1) is sealed and connected to the top inner wall of the housing (1); the second sealing plate (11) is sealed and installed on the side opposite to the U-shaped opening of the evaporator (4) and corresponds to the first sealing plate (10); the second sealing plate (11) is sealed and connected to the top of the water receiving tray (3), the side inner wall of the housing (1) and the top inner wall of the housing (1); the side of the water receiving tray (3) corresponding to the first sealing plate (10) and the side of the water receiving tray (3) corresponding to the second sealing plate (11) are sealed and connected to the side inner wall of the housing (1).

6. The air conditioner indoor unit according to claim 1, characterized in that: It also comprises a support member (12), the water receiving tray (3) and the bottom inner wall of the shell (1) are sealedly connected via the support member (12), an elastic sealing member (13) is provided between the top of the support member (12) and the water receiving tray (3), and an elastic sealing member (13) is provided between the bottom of the support member (12) and the bottom inner wall of the shell (1).

7. The air conditioner indoor unit according to claim 1, characterized in that: The inner wall and the outer wall of the top of the shell (1) are both provided with gaskets.

8. The air conditioner indoor unit according to claim 1, characterized in that: The air inlet (5) and the air outlet (6) are both located at the bottom of the shell (1). There are two air outlets (6) located on both sides of the air inlet (5). The air outlets (6) are provided with a swing blade structure (18).

9. The air conditioner indoor unit according to claim 1, characterized in that: It also includes a water pump assembly (14), which is installed on the outer wall of the side of the shell (1) and is used to extract condensed water in the water receiving tray (3).

10. The air conditioner indoor unit according to claim 1, characterized in that: It also includes an electric control component (15), which is mounted on the outer wall of the side of the housing (1).

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