Indoor unit and air conditioner

Abstract

The present invention provides an indoor unit and an air conditioner, and relates to the technical field of air conditioners. The indoor unit includes a shell, a volute, and an air inlet channel, the air inlet channel is connected to the volute, and is used to pass outdoor fresh air into the volute, the shell has an air inlet surface and a panel surface connected to each other, the volute is provided with a fresh air outlet, the panel surface is provided with a first air outlet, the air inlet surface is provided with an air inlet and a second air outlet, the fresh air outlet is provided at a position corresponding to the connection between the air inlet surface and the panel surface of the volute, and the fresh air outlet is connected to the second air outlet and the first air outlet. In an embodiment of the present invention, the first air outlet is provided on the panel surface, and the second air outlet is provided on the air inlet surface, so that the user's perceptibility can be taken into account while ensuring the indoor comfort, thereby improving the user's experience.

Description

Technical Field

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

[0002] Household air conditioners are mostly used in closed environments. Long-term operation will result in high indoor carbon dioxide content and poor air quality. To solve this problem and keep the indoor air at a comfortable level for a long time, it is necessary to introduce sufficient fresh air from the outside to supplement the oxygen content in the indoor air. For this purpose, air conditioners with fresh air function are developed to improve user comfort.

[0003] However, with the air conditioners currently on the market, either users cannot sense whether there is fresh air blowing out from outside, or the fresh air blowing in from outside causes the indoor temperature to be unstable, resulting in poor indoor comfort. Summary of the invention

[0004] The problem solved by the present invention is how to satisfy both comfort and user perceptibility at the same time, thereby improving user experience.

[0005] In order to solve the above problems, the present invention provides an indoor unit and an air conditioner.

[0006] In the first aspect, an embodiment of the present invention provides an indoor unit, which includes a shell, a volute and an air inlet channel, the air inlet channel is connected to the volute, and is used to pass outdoor fresh air into the volute, the shell has an air inlet surface and a panel surface that are connected to each other, the volute is provided with a fresh air outlet, the panel surface is provided with a first air outlet, the air inlet surface is provided with an air inlet and a second air outlet, the fresh air outlet is provided at a position of the volute corresponding to the connection between the air inlet surface and the panel surface, and the fresh air outlet is connected to the second air outlet and the first air outlet.

[0007] In the embodiment of the present invention, a first air outlet is arranged on the panel surface, and a second air outlet is arranged on the air inlet surface. When outdoor fresh air enters the volute from the fresh air duct, part of it enters the room through the first air outlet, and part of it enters the room through the second air outlet, and then enters the indoor unit from the air inlet for heat exchange, and finally re-enters the room, thereby avoiding a large amount of outdoor fresh air from directly entering the room and ensuring the stability of the indoor temperature. At the same time, a first air outlet is arranged on the panel surface, and a second air outlet is arranged on the air inlet surface, which can ensure indoor comfort while taking into account user perceptibility, thereby improving user experience.

[0008] In an optional embodiment of the present invention, the fresh air outlet has a first section and a second section that are interconnected, the first section is arranged toward the panel surface and is connected to the first air outlet, and the second section is arranged toward the air inlet surface and is connected to the second air outlet.

[0009] In an optional embodiment of the present invention, the second section is inclined toward the first section.

[0010] In an optional embodiment of the present invention, a projected area of ​​the second section on the fresh air surface is larger than a projected area of ​​the first section on the panel surface.

[0011] In an optional embodiment of the present invention, a projection area of ​​the second section on the fresh air surface is 1.5 to 2.5 times the projection area of ​​the first section on the panel surface.

[0012] In an optional embodiment of the present invention, the first air outlet is arranged close to the air inlet surface, and the second air outlet is arranged close to the panel surface.

[0013] In an optional embodiment of the present invention, the indoor unit further includes a panel, the panel is mounted on the panel surface, and there are a plurality of the first air outlets, and the plurality of the first air outlets are arranged on the panel.

[0014] In an optional embodiment of the present invention, the indoor unit further includes a plurality of second air outlet plates, the plurality of second air outlet plates are spaced apart at the second air outlet, and a gap between two adjacent second air outlet plates is connected to the fresh air outlet.

[0015] In an optional embodiment of the present invention, the indoor unit further comprises an air inlet grille, the air inlet grille is arranged on the air inlet surface, and the second air outlet and the air inlet are adjacently arranged on the air inlet grille.

[0016] In a second aspect, an embodiment of the present invention provides an air conditioner, comprising the indoor unit provided in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a partial structure of an indoor unit provided in a first embodiment of the present invention.

[0018] Figure 2 A schematic structural diagram of an indoor unit from a first perspective provided by the first embodiment of the present invention.

[0019] Figure 3 A schematic structural diagram of the indoor unit from a second perspective provided by the first embodiment of the present invention.

[0020] Figure 4 The indoor unit provided in the first embodiment of the present invention is Figure 3 Schematic diagram of the locally enlarged structure at IV in the middle.

[0021] Figure 5 The indoor unit provided in the first embodiment of the present invention is Figure 2Schematic diagram of the locally enlarged structure at V in the middle.

[0022] Description of reference numerals:

[0023] 100-indoor unit; 110-housing; 111-panel surface; 112-air inlet surface; 113-first air outlet; 114-air inlet; 115-second air outlet; 120-volute; 122-fresh air outlet; 124-first section; 126-second section; 140-second air outlet plate; 150-panel; 160-air inlet grille. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] First embodiment

[0026] See also Figure 1 The present embodiment provides an indoor unit 100. The indoor unit 100 provided in the present embodiment can introduce outdoor fresh air into the room, which can meet the requirements of comfort and user perceptibility at the same time, thereby improving the user experience.

[0027] The indoor unit 100 is generally installed indoors, and heat is exchanged with the indoor air through the heat exchanger in the indoor unit 100. Generally, when the air conditioner is in cooling mode, the indoor unit 100 cools the indoor air. When the air conditioner is in heating mode, the indoor unit 100 heats the indoor air. Since the room is often in a closed state when the air conditioner is turned on, long-term operation will cause the carbon dioxide content of the indoor air to increase, resulting in air quality. In order to maintain the indoor air at a comfortable level for a long time, it is necessary to introduce sufficient outdoor air from the outside to supplement the oxygen content of the indoor air.

[0028] Please refer to Figure 1 and Figure 2 In this embodiment, the indoor unit 100 includes a shell 110, a volute 120 and an air inlet channel (not shown in the figure), the air inlet channel is connected to the volute 120, and is used to pass outdoor fresh air into the volute 120, the shell 110 has an air inlet surface 112 and a panel surface 111 that are connected to each other, the volute 120 is provided with a fresh air outlet 122, the panel surface 111 is provided with a first air outlet 113, the air inlet surface 112 is provided with an air inlet 114 and a second air outlet 115, the fresh air outlet 122 is connected to the second air outlet 115 and the first air outlet 113, and can allow outdoor fresh air to pass into the room through the first air outlet 113 and the outdoor fresh air blown out from the second air outlet 115 to enter the shell 110 from the air inlet 114.

[0029] In this embodiment, the volute 120 and the air inlet channel form a fresh air module, which is mainly used to introduce outdoor fresh air. When the indoor unit 100 is installed indoors, the surface opposite to the panel surface 111 is fixed on the wall. The panel surface 111 is a display surface, that is, a surface that the user can directly see. The first air outlet 113 is set on the panel surface 111, and the user can directly feel that there is outdoor fresh air entering the room. If only the first air outlet 113 is set on the panel surface 111, the outdoor fresh air entering the room from the first air outlet 113 will have a certain temperature difference with the indoor air, resulting in poor indoor comfort.

[0030] For example: Generally, the cooling mode will be turned on when the outdoor temperature is high. The current indoor air temperature will be lower than the outdoor fresh air temperature. After the outdoor fresh air is directly introduced into the room from the panel surface 111, the oxygen content will be solved while causing the temperature of the entire indoor air to rise, resulting in poor indoor comfort.

[0031] Similarly, the heating mode is generally turned on when the outdoor temperature is low. The current indoor air temperature will be higher than the outdoor fresh air temperature. After the outdoor fresh air is directly introduced into the room from the panel surface 111, the oxygen content is solved while the temperature of the entire indoor air will be lowered, resulting in poor indoor comfort.

[0032] The air inlet surface 112 is generally arranged at the top of the housing 110, and the air inlet 114 arranged on the air inlet surface 112 is mainly used to pass the indoor air into the housing 110 for heat exchange. A second air outlet 115 is arranged on the air inlet surface 112. When the outdoor fresh air enters the room from the second air outlet 115, it will re-enter the housing 110 under the action of the indoor fan installed at the air inlet 114, and re-enter the room after heat exchange in the indoor unit 100. This method can improve the indoor comfort, but because the second air outlet 115 is arranged on the air inlet surface 112, the user cannot sense whether there is outdoor fresh air entering the room.

[0033] In this embodiment, a first air outlet 113 is provided on the panel surface 111, and a second air outlet 115 is provided on the air inlet surface 112. When outdoor fresh air enters the volute 120 from the fresh air duct, part of it enters the room through the first air outlet 113, and part of it enters the room through the second air outlet 115, and then enters the indoor unit 100 from the air inlet 114 for heat exchange, and finally re-enters the room, thereby preventing a large amount of outdoor fresh air from directly entering the room and ensuring the stability of the indoor temperature. At the same time, a first air outlet 113 is provided on the panel surface 111, and a second air outlet 115 is provided on the air inlet surface 112, which can ensure indoor comfort while taking into account user perceptibility, thereby improving user experience.

[0034] In this embodiment, the fresh air outlet 122 is disposed at a position of the volute 120 corresponding to the connection between the air inlet surface 112 and the panel surface 111 .

[0035] In this embodiment, there is one fresh air outlet 122. In order to ensure that one fresh air outlet 122 can take care of both the first air outlet 113 and the second air outlet 115, the fresh air outlet 122 is arranged at the position of the connection between the volute 120 corresponding to the air inlet surface 112 and the panel surface 111. Arranging it at this position can ensure that the fresh air outlet 122 can be connected to the first air outlet 113, and can also ensure that the fresh air outlet 122 is connected to the second air outlet 115.

[0036] Generally, the panel surface 111 and the air inlet surface 112 are arranged at an angle to each other, and the connection between the panel surface 111 and the air inlet surface 112 has a corner. The fresh air outlet 122 is arranged at a position of the volute 120 corresponding to the corner, so that part of the fresh air outlet 122 corresponds to the panel surface 111, and part of the fresh air outlet 122 corresponds to the air inlet surface 112.

[0037] It should be noted that, in other embodiments of the present invention, there can be two fresh air outlets 122, both of which are arranged on the volute 120, one fresh air outlet 122 is connected to the first air outlet 113, and the other fresh air outlet 122 is connected to the second air outlet 115. When the outdoor fresh air enters the volute 120 through the air inlet channel, the indoor fresh air is introduced into the room through the connected fresh air outlet 122 and the first air outlet 113, and at the same time, the indoor fresh air can be introduced into the air inlet 114 through the second air outlet 115 and the other fresh air outlet 122, and then heat exchange is performed inside the indoor unit 100 at the air inlet 114, and then re-enters the room after heat exchange.

[0038] In addition, the number of the fresh air outlets 122 may also be three, four, or other numbers. The number of the fresh air outlets 122 is not specifically limited.

[0039] In this embodiment, the fresh air outlet 122 has a first section 124 and a second section 126 that are interconnected. The first section 124 is arranged toward the panel surface 111 and is connected to the first air outlet 113. The second section 126 is arranged toward the air inlet surface 112 and is connected to the second air outlet 115.

[0040] The first section 124 and the second section 126 are connected to each other, and the outdoor fresh air blown out from the first section 124 is blown out toward the panel surface 111 and blown into the room through the first air outlet 113. Similarly, the outdoor fresh air blown out from the second section 126 is blown out toward the fresh air surface and blown into the room through the second air outlet 115.

[0041] In this embodiment, the first section 124 can be directly arranged corresponding to the first air outlet 113, that is, the projection of the first section 124 on the panel surface 111 coincides with the first air outlet 113, and the outdoor fresh air blown out from the first section 124 is directly blown out from the first air outlet 113.

[0042] In addition, in other embodiments of the present invention, the first section 124 can be connected to the first air outlet 113 through the air guide channel. The fresh air in the volute 120 is blown out from the first section 124 and enters the air guide channel, and is blown out from the first air outlet 113 after being guided by the air guide channel.

[0043] Similarly, the second section 126 is directly arranged corresponding to the second air outlet 115 , and it can also be understood that the projection of the second section 126 on the fresh air surface coincides with the second air outlet 115 , and the outdoor fresh air blown out from the second section 126 can be directly blown out through the second air outlet 115 .

[0044] Similarly, in addition to this, in other embodiments of the present invention, the second section 126 can be connected to the second air outlet 115 through an air guide channel. The fresh air in the volute 120 is blown out of the second section 126 and enters the air guide channel, and is guided by the air guide channel and blown out from the second air outlet 115.

[0045] In this embodiment, the second section 126 is tilted toward the first section 124. The end of the second section 126 close to the first section 124 is lower than the end of the second section 126 away from the first section 124. It can be considered that the end of the second section 126 away from the first section 124 is closer to the air inlet surface 112. The second section 126 is slightly tilted toward the panel surface 111. When the outdoor air is blown out through the fresh air outlet 122, the second section 126 and the first section 124 can smoothly transition, so that the outdoor fresh air in the volute 120 can be blown into the room from the first air outlet 113 or the second air outlet 115 as much as possible, thereby improving the utilization rate of the outdoor fresh air.

[0046] At the same time, the indoor unit 100 is generally installed near the roof, and the second section 126 is arranged toward the first section 124. The outdoor fresh air blown obliquely from the second air outlet 115 is reflected by the roof and then sent obliquely downward, so that the fresh air brought by the outdoor fresh air can be felt more quickly. In addition, the outdoor fresh air blown obliquely from the second air outlet 115 in the vertical direction and the outdoor fresh air blown horizontally from the first air outlet 113 form a multi-dimensional air supply, which accelerates the flow of outdoor fresh air in the room and improves the indoor fresh air exchange efficiency.

[0047] In this embodiment, the first air outlet 113 is disposed close to the air inlet surface 112 , and the second air outlet 115 is disposed close to the panel surface 111 .

[0048] Since the fresh air outlet 122 is arranged at the connection between the panel surface 111 and the air inlet surface 112 , in order to enable the first air outlet 113 and the second air outlet 115 to be arranged with the fresh air outlet 122 , the first air outlet 113 and the second air outlet 115 need to be arranged close to the connection between the panel surface 111 and the air inlet surface 112 .

[0049] In this embodiment, the projection area of ​​the second section 126 on the fresh air surface is larger than the projection area of ​​the first section 124 on the panel surface 111. Under the same wind speed, the air volume of the outdoor fresh air output from the second section 126 is larger than the air volume of the outdoor fresh air output from the first section 124.

[0050] Since the first section 124 is connected to the first air outlet 113, the outdoor fresh air blown out from the first air outlet 113 directly enters the room. If the outdoor fresh air blown out from the first air outlet 113 is too much, the indoor temperature may drop quickly, resulting in poor indoor comfort. The first air outlet 113 provided on the panel surface 111 is mainly intended to allow the user to feel that outdoor fresh air is entering the room. Therefore, it is only necessary to ensure that outdoor fresh air is blown out from the first air outlet 113, and the air volume of the first air outlet 113 does not need to be too large.

[0051] Similarly, the second section 126 is connected to the second air outlet 115, and the outdoor fresh air blown out from the second air outlet 115 or enters the indoor unit 100 through the air inlet 114. After heat exchange in the indoor unit 100, the temperature of the outdoor fresh air increases. After entering the room again, the indoor temperature does not decrease, thereby improving the user experience.

[0052] Therefore, in this embodiment, in order to ensure that the user feels that there is outdoor fresh air entering the room while ensuring that the indoor temperature is relatively stable, the projection area of ​​the second section 126 on the fresh air surface is larger than the projection area of ​​the first section 124 on the panel surface 111, so as to ensure that the air volume of outdoor fresh air output from the second air outlet 115 is larger than the air volume of outdoor fresh air output from the first air outlet 113.

[0053] Generally, the projection area of ​​the second section 126 on the fresh air surface is 1.5 to 2.5 times the projection area of ​​the first section 124 on the panel surface 111. As much outdoor fresh air as possible is blown out from the second air outlet 115, enters the indoor unit 100 through the air inlet 114 for heat exchange, and then enters the room again, ensuring that the indoor temperature does not drop as much as possible.

[0054] Preferably, in this embodiment, the ratio of the projection area of ​​the second section 126 on the fresh air surface to the projection area of ​​the first section 124 on the panel surface 111 is 2:1, which allows the user to feel that outdoor fresh air is entering the room while ensuring the stability of the indoor temperature.

[0055] In this embodiment, the air outlet direction of the second section 126 is set at an angle to the air outlet direction of the first section 124. The first air outlet 113 is set on the panel surface 111, and the air outlet direction of the first section 124 is perpendicular to the panel surface 111. The outdoor fresh air blown out from the first section 124 can be completely blown out from the first air outlet 113, thereby improving the utilization rate of the outdoor fresh air.

[0056] Similarly, since the second section 126 is arranged on the air inlet surface 112, the air outlet direction of the second section 126 is perpendicular to the air inlet surface 112, so that the outdoor fresh air blown out from the second section 126 can be completely blown out from the second air outlet 115, thereby improving the utilization rate of the outdoor fresh air.

[0057] Please refer to Figure 3 and Figure 4 In this embodiment, the indoor unit 100 further includes a panel 150 , and there are multiple first air outlets 113 , which are arranged on the panel 150 .

[0058] In this embodiment, a plurality of first air outlets 113 are arranged in a matrix on the panel 150. Arranging a plurality of first air outlets 113 in a matrix on the panel 150 can improve the aesthetics of the entire panel 150.

[0059] In addition, in other embodiments of the present invention, the plurality of first air outlets 113 may be arranged on the panel 150 in other shapes, for example, in a diamond shape, a trapezoidal shape, or a circular shape.

[0060] At the same time, the aperture of the first air outlet 113 is relatively small. When the outdoor fresh air is blown out from the first air outlet 113, numerous first air outlets 113 can separate the outdoor fresh air into numerous small wisps. When the outdoor fresh air blows toward the user, the user can feel that the wind is blowing out, thereby improving the user experience. At the same time, the first air outlet 113 is provided with a microporous structure, which can prevent larger impurities from entering the interior of the housing 110 from the first air outlet 113 and affecting the operation of other components inside the housing 110.

[0061] It is easy to understand that the smaller the aperture of the first air outlet 113 is, the smaller the volume of impurities that can be prevented. Impurities with a volume larger than the aperture of the first air outlet 113 cannot enter the interior of the shell 110, thereby improving the dust prevention effect.

[0062] In this embodiment, the shape of the first air outlet 113 may be circular, rectangular, or diamond-shaped, and the shape of the first air outlet 113 may not be specifically limited. It should be noted that in other embodiments of the present invention, there may be one first air outlet 113. When there is one first air outlet 113, the first air outlet 113 generally has a larger diameter. In this case, a first air outlet plate may be provided at the first air outlet 113, and a plurality of through holes are provided at intervals on the first air outlet plate, which are connected to the fresh air outlet 122.

[0063] The first air outlet plate is disposed at the first air outlet 113 , and can shield the first air outlet 113 , thereby preventing larger impurities from entering the shell 110 through the first air outlet 113 and affecting the operation of other components inside the shell 110 .

[0064] In this embodiment, the number of through holes is not specifically limited, and the aperture of the through holes is relatively small. When outdoor fresh air is blown out from the first air outlet 113, countless through holes can separate the outdoor fresh air into countless small wisps. When the outdoor fresh air blows toward the user, the user can feel that it is a breeze, thereby improving the user experience.

[0065] See also Figure 5 In this embodiment, the indoor unit 100 further includes a plurality of second air outlet plates 140 , which are spaced apart at the first air outlet 113 , and a gap between two adjacent second air outlet plates 140 is connected to the fresh air outlet 122 .

[0066] In this embodiment, since the second air outlet 115 is disposed on the air inlet surface 112, generally, the air inlet surface 112 and the top surface of the housing 110 are connected, and when the outdoor fresh air is blown out from the second air outlet 115, it will quickly diffuse to other locations in the room. The second air outlet plate 140 is disposed at the second air outlet 115 to guide the outdoor fresh air, so that the fresh air blown out from the second air outlet 115 is blown out along the direction of the second air outlet plate 140.

[0067] Preferably, the second air outlet plate 140 is arranged toward the air inlet 114, so that the outdoor fresh air blown out from the second air outlet 115 can diffuse to the air inlet 114, and enter the indoor unit 100 from the air inlet 114 for heat exchange processing, thereby preventing a large amount of outdoor fresh air from directly diffusing into the room, causing unstable indoor temperature and reducing indoor comfort.

[0068] In this embodiment, the interval between two adjacent second air outlet plates 140 is small, and the multiple second air outlet plates 140 can also play a protective role, which can prevent external foreign objects or small animals from entering the second air outlet 115 through the gap between two adjacent second air outlet plates 140 as much as possible.

[0069] It is easy to understand that the smaller the interval between two adjacent second air outlet plates 140 is, the smaller the impurities that can enter the second air outlet 115 are.

[0070] In this embodiment, the indoor unit 100 further includes an air inlet grille 160 . The air inlet grille 160 is installed on the air inlet surface 112 . The air inlet 114 and the second air outlet are both arranged on the air inlet grille 160 .

[0071] The working principle of the indoor unit 100 provided in this embodiment is as follows: in this embodiment, when the user turns on the fresh air mode, the outdoor fresh air enters the interior of the volute 120 through the fresh air channel, part of the outdoor fresh air is directly blown into the room from the first air outlet 113, and part of the outdoor fresh air is blown out from the second air outlet 115 and then enters the indoor unit 100 through the air inlet 114, and enters the room again after heat exchange treatment.

[0072] To summarize, the indoor unit 100 provided in this embodiment, in this embodiment, a first air outlet 113 is set on the panel surface 111, and a second air outlet 115 is set on the air inlet surface 112. When outdoor fresh air enters the volute 120 from the fresh air channel, part of it enters the room through the first air outlet 113, and part of it enters the room through the second air outlet 115, and then enters the indoor unit 100 from the air inlet 114 for heat exchange, and finally re-enters the room, avoiding a large amount of outdoor fresh air from directly entering the room, ensuring the stability of the indoor temperature. At the same time, the first air outlet 113 is set on the panel surface 111, and the second air outlet 115 is set on the air inlet surface 112, which can ensure indoor comfort while taking into account user perceptibility, thereby improving user experience.

[0073] Second embodiment

[0074] The present embodiment provides an air conditioner. The air conditioner provided by the present embodiment can introduce outdoor fresh air into the room, and can meet both comfort and user perceptibility, thereby improving the user experience.

[0075] For the sake of brief description, reference may be made to the first embodiment for matters not mentioned in this embodiment.

[0076] In this embodiment, the air conditioner includes an outdoor unit and the indoor unit 100 provided in the first embodiment, and the indoor unit 100 is connected to the outdoor unit.

[0077] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. An indoor unit, characterized in that: The indoor unit (100) comprises a housing (110), a volute (120) and an air inlet passage, wherein the air inlet passage is connected to the volute (120) and is used to introduce outdoor fresh air into the volute (120), the housing (110) is provided with an air inlet surface (112) and a panel surface (111) which are connected to each other, the volute (120) is provided with a fresh air outlet (122), the panel surface (111) is provided with a first air outlet (113), the air inlet surface (112) is provided with an air inlet (114) and a second air outlet (115), the fresh air outlet (122) is provided at a position of the volute (120) corresponding to the connection between the air inlet surface (112) and the panel surface (111), and the fresh air outlet (122) is connected to the second air outlet (115) and the first air outlet (113); The first air outlet (113) is arranged close to the air inlet surface (112), and the second air outlet (115) is arranged close to the panel surface (111); The panel surface (111) and the air inlet surface (112) are arranged at an angle to each other, the connection between the panel surface (111) and the air inlet surface (112) has a corner, and the fresh air outlet (122) is arranged at a position of the volute (120) corresponding to the corner, so that part of the fresh air outlet (122) corresponds to the panel surface (111), and part of the fresh air outlet (122) corresponds to the air inlet surface (112); The fresh air outlet (122) comprises a first section (124) and a second section (126) which are connected to each other, the first section (124) being arranged towards the panel surface (111) and being in communication with the first air outlet (113), and the second section (126) being arranged towards the air inlet surface (112) and being in communication with the second air outlet (115); The second section (126) is arranged to be inclined toward the first section (124); After the fresh air enters the volute (120) from the fresh air passage, part of it enters the room through the first air outlet (113), and part of it enters the room through the second air outlet (115), and then enters the indoor unit (100) through the air inlet (114) for heat exchange.

2. The indoor unit according to claim 1, characterized in that: The projection area of ​​the second section (126) on the fresh air surface is larger than the projection area of ​​the first section (124) on the panel surface (111).

3. The indoor unit according to claim 2, characterized in that: The projection area of ​​the second section (126) on the fresh air surface is 1.5 to 2.5 times the projection area of ​​the first section (124) on the panel surface (111).

4. The indoor unit according to claim 1, characterized in that: The indoor unit further comprises a panel (150), wherein the panel (150) is mounted on the panel surface (111), and the first air outlet (113) comprises a plurality of first air outlets (113), wherein the plurality of first air outlets (113) are arranged on the panel (150).

5. The indoor unit according to claim 1, characterized in that: The indoor unit (100) further comprises a plurality of second air outlet plates (140), wherein the plurality of second air outlet plates (140) are arranged at intervals at the second air outlet (115), and a gap between two adjacent second air outlet plates (140) is connected to the fresh air outlet (122).

6. The indoor unit according to claim 5, characterized in that: The indoor unit further comprises an air inlet grille (160), wherein the air inlet grille (160) is arranged on the air inlet surface (112), and the second air outlet (115) and the air inlet (114) are adjacently arranged on the air inlet grille (160).

7. An air conditioner, characterized in that: It comprises the indoor unit (100) as described in any one of claims 1 to 6.

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