Air conditioner indoor unit

Abstract

The present invention provides an air-conditioning indoor unit, which includes a casing and a fresh air device, wherein the fresh air device is installed in the casing to introduce outdoor fresh air into the room through the fresh air device; wherein, a fresh air outlet and an air-conditioning outlet are arranged on the casing, the fresh air device has a fresh air channel, and the fresh air outlet is connected with the fresh air channel; the minimum distance between the fresh air outlet and the air-conditioning outlet is the synchronous air supply distance, and the synchronous air supply distance is less than or equal to the predetermined air supply distance, so that the air-conditioned wind flowing out of the air-conditioning outlet drives the flow of the fresh air flowing out of the fresh air outlet, which can not only increase the air supply distance of the fresh air flowing out of the fresh air outlet; but also change the direction of the fresh air flowing out of the fresh air outlet by changing the air volume and flow direction of the air-conditioned wind flowing out of the air-conditioning outlet, thereby achieving a better fresh air supply effect, so that the indoor air quality is well improved.

Description

Technical Field

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

[0002] In recent years, due to the rapid economic development and the acceleration of urbanization, air pollution has become increasingly serious. Most cities have experienced smog weather. The increase in PM2.5 concentration will directly lead to frequent smog weather, a substantial increase in toxic and harmful substances in the fog, and other problems, which have seriously threatened human health. In this case, conventional household air conditioners can no longer meet people's needs, and health, comfort and environmental protection have become the goals of modern air conditioning development.

[0003] For ordinary air conditioners, in order to ensure its air conditioning effect, the air-conditioned room must be closed, resulting in an increase in indoor dust, smoke, bacteria, viruses, and exhaust gas, a decrease in oxygen content, and worsening air quality. In recent years, as "air-conditioning disease" has attracted increasing attention, people have been asked not to stay in air-conditioned rooms for a long time, and to improve the indoor environment by opening windows to let in fresh air or by exhausting indoor air to create negative pressure through the gaps of doors and windows to let in fresh air.

[0004] At present, air conditioner indoor units with fresh air structures have been launched on the market. However, existing air conditioner indoor units with fresh air structures have the following problems:

[0005] 1. The exhaust effect is poor, which cannot effectively improve the indoor air quality;

[0006] 2. Poor human comfort, that is, in summer, the human body will feel that the temperature of the fresh air blown out by the air conditioner is higher than the indoor temperature, and in winter, the human body will feel that the temperature of the fresh air blown out by the air conditioner is lower than the indoor temperature;

[0007] 3. High energy consumption and poor energy saving effect;

[0008] 4. The introduction of fresh air results in poor cooling and heating effects of air conditioning. Summary of the invention

[0009] The main purpose of the present invention is to provide an air-conditioning indoor unit to solve the problem that the air-conditioning indoor unit in the prior art cannot effectively improve the indoor air quality.

[0010] In order to achieve the above-mentioned purpose, the present invention provides an air-conditioning indoor unit, which includes a casing and a fresh air device, wherein the fresh air device is installed in the casing to introduce outdoor fresh air into the room through the fresh air device; wherein a fresh air outlet and an air-conditioning outlet are provided on the casing, the fresh air device has a fresh air channel, and the fresh air outlet is connected to the fresh air channel; the minimum distance between the fresh air outlet and the air-conditioning outlet is a synchronous air supply distance, and the synchronous air supply distance is less than or equal to a predetermined air supply distance, so that the air-conditioning wind flowing out of the air-conditioning outlet drives the flow of fresh air flowing out of the fresh air outlet.

[0011] Furthermore, the predetermined air supply distance is half of the height of the fresh air outlet.

[0012] Furthermore, the fresh air outlet is located at the upper end of the casing, the air conditioning outlet is located below the fresh air outlet, and the synchronous air supply distance is the minimum distance between the bottom end of the fresh air outlet and the top end of the air conditioning outlet.

[0013] Furthermore, a return air outlet is provided on the casing, and the fresh air device also has a return air channel. The return air outlet is connected to the return air channel. The maximum distance between the center line of the return air outlet and the bottom end of the casing is a predetermined return air distance, and the value range of the predetermined return air distance is 1.1m to 1.6m.

[0014] Furthermore, the return air vent is located below the air outlet of the air conditioner.

[0015] Furthermore, a maximum distance between a top end of the return air outlet and a bottom end of the air-conditioning outlet is greater than or equal to one third of a height of the return air outlet.

[0016] Furthermore, an air guide plate is provided at the fresh air outlet to adjust the direction of the fresh air flowing out of the fresh air outlet by controlling the air guide plate.

[0017] Furthermore, the wind guide plate includes wind guide blades, and the angle between the wind guide blades and the vertical plane ranges from 0 degrees to 90 degrees.

[0018] Furthermore, a fresh air inlet is provided on the casing, and the fresh air inlet is connected to both the outside and the fresh air passage to introduce outdoor fresh air into the fresh air passage; wherein, the fresh air inlet is located at the upper end of the casing.

[0019] Furthermore, an exhaust port is provided on the casing, and the exhaust port is connected to both the outside and the return air passage, so that the return air in the return air passage is discharged through the exhaust port; wherein the exhaust port is located at the upper end of the casing.

[0020] Furthermore, the fresh air device includes a heat exchanger, at least part of the fresh air channel and at least part of the return air channel are located in the heat exchanger, and part of the fresh air channel located in the heat exchanger and part of the return air channel located in the heat exchanger are cross-arranged; wherein, the heat exchanger is arranged at the upper end of the inner cavity of the casing.

[0021] By applying the technical solution of the present invention, the air-conditioning indoor unit includes a casing and a fresh air device, which is installed in the casing to introduce outdoor fresh air into the room through the fresh air device; wherein a fresh air outlet and an air-conditioning outlet are provided on the casing, the fresh air device has a fresh air channel, and the fresh air outlet is connected to the fresh air channel; the minimum distance between the fresh air outlet and the air-conditioning outlet is the synchronous air supply distance, and the synchronous air supply distance is less than or equal to the predetermined air supply distance, so that the air-conditioning wind flowing out of the air-conditioning outlet drives the flow of fresh air flowing out of the fresh air outlet. By setting a synchronous air supply distance between the fresh air outlet and the air-conditioning outlet, the conditioned air flowing out of the air-conditioning outlet can drive the flow of fresh air flowing out of the fresh air outlet. This can not only increase the air supply distance of the fresh air flowing out of the fresh air outlet, so that the fresh air can be transported to a farther area where human beings are active; it can also change the direction of the fresh air flowing out of the fresh air outlet by changing the air volume and flow direction of the conditioned air flowing out of the air-conditioning outlet, thereby achieving a better fresh air supply effect, and improving the indoor air quality quickly and effectively, thereby solving the problem that the air-conditioning indoor unit in the prior art cannot effectively improve the indoor air quality.

[0022] In addition, after the fresh air coming out of the fresh air outlet merges with the air-conditioned air coming out of the air-conditioning outlet, the fresh air coming out of the fresh air outlet can exchange heat with the air-conditioned air coming out of the air-conditioning outlet, thereby increasing the supply air temperature of the fresh air, making the supply air temperature of the fresh air closer to the air-conditioning air temperature, thereby improving human comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 A schematic side view of an air-conditioning indoor unit according to an embodiment of the air-conditioning indoor unit of the present invention is shown;

[0025] Figure 2 Shows Figure 1 A front view of a fresh air outlet of an indoor unit of an air conditioner;

[0026] Figure 3 Shows Figure 2 A schematic diagram of the angle between the air guide blades of the air guide plate at the fresh air outlet of the indoor unit of the air conditioner and the vertical plane;

[0027] Figure 4 Shows Figure 1 Schematic diagram of fresh air flow of the indoor unit of the air conditioner;

[0028] Figure 5 Shows Figure 1 A schematic diagram of an airflow flow of return air of an indoor unit of an air conditioner; and

[0029] Figure 6 Shows Figure 1 Another airflow diagram of the return air of the air conditioner indoor unit.

[0030] The above drawings include the following reference numerals:

[0031] 10. Casing; 12. Air guide plate; 13. Air guide blades; 32. Fresh air outlet; 36. Fresh air inlet; 31. Return air outlet; 37. Exhaust outlet; 33. Return air duct; 35. Heat exchanger; 20. Air conditioning outlet; 50. Evaporator; 60. Air conditioning fan; 71. Air inlet duct; 72. Exhaust duct; A. The angle between the air guide blades and the vertical plane. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] The present invention provides an air conditioner indoor unit, please refer to Figures 1 to 6 The air-conditioning indoor unit includes a casing 10 and a fresh air device, which is installed in the casing 10 to introduce outdoor fresh air into the room through the fresh air device; wherein, a fresh air outlet 32 ​​and an air-conditioning outlet 20 are provided on the casing 10, the fresh air device has a fresh air channel, and the fresh air outlet 32 ​​is connected to the fresh air channel; the minimum distance between the fresh air outlet 32 ​​and the air-conditioning outlet 20 is the synchronous air supply distance, and the synchronous air supply distance is less than or equal to the predetermined air supply distance, so that the air-conditioning wind flowing out of the air-conditioning outlet 20 drives the fresh air flowing out of the fresh air outlet 32 ​​to flow.

[0034] In the air conditioner indoor unit of the present invention, Figure 4 As shown, by setting a synchronous air supply distance between the fresh air outlet 32 ​​and the air-conditioning outlet 20, the air-conditioned air flowing out of the air-conditioning outlet 20 can drive the flow of fresh air flowing out of the fresh air outlet 32. This can not only increase the air supply distance of the fresh air flowing out of the fresh air outlet 32, so that the fresh air can be transported to a farther human activity area; it can also change the direction of the fresh air flowing out of the fresh air outlet 32 ​​by changing the air volume and flow direction of the air-conditioned air flowing out of the air-conditioning outlet 20, thereby achieving a better fresh air supply effect, so that the indoor air quality is quickly and effectively improved, thereby solving the problem that the air-conditioning indoor unit in the prior art cannot effectively improve the indoor air quality.

[0035] In addition, after the fresh air coming out of the fresh air outlet 32 ​​merges with the air-conditioned air coming out of the air-conditioning outlet 20, the fresh air coming out of the fresh air outlet 32 ​​can exchange heat with the air-conditioned air coming out of the air-conditioning outlet 20, thereby increasing the supply air temperature of the fresh air, making the supply air temperature of the fresh air closer to the air-conditioning air temperature, thereby improving human comfort.

[0036] During the specific implementation, the predetermined air supply distance is half of the height of the fresh air outlet 32 ​​.

[0037] During the specific implementation process, the fresh air outlet 32 ​​is located at the upper end of the casing 10 to prevent the fresh air delivered by the fresh air outlet 32 ​​from blowing directly toward the human body, which helps to improve human comfort; the air-conditioning outlet 20 is located below the fresh air outlet 32, and the synchronous air supply distance is the minimum distance between the bottom end of the fresh air outlet 32 ​​and the top of the air-conditioning outlet 20; optionally, the maximum distance between the hole center line of the fresh air outlet 32 ​​and the top of the casing 10 is less than or equal to one tenth of the height of the casing 10, the maximum distance between the hole center line of the air-conditioning outlet 20 and the top of the casing 10 is less than or equal to one half of the height of the casing 10, and the height of the air-conditioning outlet 20 is greater than or equal to one half of the height of the casing 10; preferably, the air-conditioning outlet 20 is a strip opening.

[0038] Specifically, a return air outlet 31 is also provided on the casing 10, and the fresh air device also has a return air channel 33. The return air outlet 31 is connected to the return air channel 33. The maximum distance between the hole center line of the return air outlet 31 and the bottom end of the casing 10 is the predetermined return air distance. The value range of the predetermined return air distance is 1.1m to 1.6m, and this value range is the height of the main breathing area when the human body is standing or sitting. Therefore, the predetermined return air distance here is to better meet the situation that when the human body is sitting or standing, the return air outlet 31 can be located in the main breathing area of ​​the human body, so that the carbon dioxide and other polluted gases exhaled by the human body enter the return air channel 33 from the return air outlet 31, and then effectively discharge the carbon dioxide and other polluted gases in the indoor human breathing area.

[0039] During the specific implementation process, the return air outlet 31 is located below the air-conditioning outlet 20; that is, the fresh air outlet 32, the air-conditioning outlet 20 and the return air outlet 31 are arranged in sequence along the height direction of the casing 10, and the fresh air outlet 32, the air-conditioning outlet 20 and the return air outlet 31 are all located on the front panel of the casing 10.

[0040] In a specific implementation process, the maximum distance between the top end of the return air outlet 31 and the bottom end of the air-conditioning outlet 20 is greater than or equal to one third of the height of the return air outlet 31 .

[0041] like Figure 2As shown, in order to ensure that the fresh air flowing out of the fresh air outlet 32 ​​can be driven by the air-conditioning air flowing out of the air-conditioning outlet 20, an air guide plate 12 is provided at the fresh air outlet 32 ​​to adjust the direction of the fresh air flowing out of the fresh air outlet 32 ​​by controlling the air guide plate 12.

[0042] Specifically, Figure 3 As shown, the air guide plate 12 includes an air guide blade 13, and the direction of the fresh air flowing out of the fresh air outlet 32 ​​is changed by changing the angle A between the air guide blade 13 and the vertical plane. The value range of the angle A between the air guide blade 13 and the vertical plane is set to 0 degrees to 90 degrees, so that the fresh air flowing out of the fresh air outlet 32 ​​can flow toward the air conditioning outlet 20.

[0043] Specifically, the housing 10 is further provided with a fresh air inlet 36, which is connected to both the outside and the fresh air passage to introduce outdoor fresh air into the fresh air passage; wherein the fresh air inlet 36 is located at the upper end of the housing 10. Optionally, the maximum distance between the hole center line of the fresh air inlet 36 and the top of the housing 10 is less than or equal to one tenth of the height of the housing 10. Optionally, the fresh air inlet 36 is located on the rear panel of the housing 10.

[0044] Specifically, the fresh air device also includes a fresh air fan, and the fresh air inlet 36 is arranged opposite to the fresh air fan, so that outdoor fresh air enters the fresh air channel through the fresh air inlet 36.

[0045] Specifically, the housing 10 is further provided with an exhaust port 37, which is connected to both the outside and the return air passage 33, so that the return air in the return air passage 33 is discharged through the exhaust port 37; wherein the exhaust port 37 is located at the upper end of the housing 10. Optionally, the exhaust port 37 is located on a side panel of the housing 10.

[0046] Specifically, the fresh air device further includes an exhaust fan, and the return air port 31 is arranged opposite to the exhaust fan, so that the indoor polluted air enters the return air channel 33 through the return air port 31 .

[0047] Specifically, the fresh air device also includes a heat exchanger 35, at least part of the fresh air channel and at least part of the return air channel 33 are both located in the heat exchanger 35, and part of the fresh air channel located in the heat exchanger 35 and part of the return air channel 33 located in the heat exchanger 35 are cross-arranged, so that the fresh air in the part of the fresh air channel located in the heat exchanger 35 and the return air in the part of the return air channel 33 located in the heat exchanger 35 can exchange heat with each other, which can recover a certain amount of energy loss and reduce energy loss.

[0048] During the specific implementation process, the fresh air channel includes a first fresh air section, a second fresh air section and a third fresh air section, and the third fresh air section is arranged between the first fresh air section and the second fresh air section; the two ends of the third fresh air section are respectively connected to the second end of the first fresh air section and the first end of the second fresh air section, the first end of the first fresh air section is connected to the fresh air inlet 36, and the second end of the second fresh air section is connected to the fresh air outlet 32; wherein, the first fresh air section and the second fresh air section both extend in a horizontal direction, and the third fresh air section is located in the heat exchanger 35.

[0049] The return air duct includes a first return air section, a second return air section and a third return air section, and the third return air section is arranged between the first return air section and the second return air section; the two ends of the third return air section are respectively connected to the second end of the first return air section and the first end of the second return air section, the first end of the first return air section is connected to the return air port 31, and the second return air section is connected to the exhaust port 37; wherein the first return air section and the second return air section both extend in a horizontal direction, and the third return air section is located in the heat exchanger 35 and is cross-arranged with the third fresh air section.

[0050] In a specific implementation process, the heat exchanger 35 is disposed at the upper end of the inner cavity of the casing 10 .

[0051] During the specific implementation process, the air-conditioning indoor unit also includes an air-conditioning air inlet and an evaporator 50; the evaporator 50 is arranged in the casing 10, so that the indoor air enters the casing 10 from the air-conditioning air inlet, and after heat exchange through the evaporator 50, it is delivered to the room through the air-conditioning outlet 20; optionally, the evaporator 50 is arranged opposite to the air-conditioning outlet 20, and the side wall of the evaporator 50 is in contact with the inner wall of the rear panel of the casing 10.

[0052] During the specific implementation process, the air conditioner indoor unit also includes an air conditioner fan 60, which is arranged between the evaporator 50 and the air conditioner outlet 20, and is arranged opposite to the air conditioner outlet 20, so that indoor air enters the casing 10 from the air conditioner inlet.

[0053] During the specific implementation process, the air conditioner indoor unit also includes an air inlet duct 71, one end of which is connected to the fresh air inlet 36, and the other end of the air inlet duct 71 extends through the indoor wall to the outdoors to connect with the outdoors, and the outdoor fresh air enters the fresh air channel through the air inlet duct 71.

[0054] During the specific implementation process, the air conditioner indoor unit also includes an exhaust duct 72, one end of the exhaust duct 72 is connected to the exhaust port 37, and the other end of the exhaust duct 72 extends to the outdoors through the indoor wall to communicate with the outdoors, and the return air in the return air channel 33 is discharged to the outdoors through the exhaust duct 72.

[0055] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0056] In the air-conditioning indoor unit of the present invention, the air-conditioning indoor unit includes a casing 10 and a fresh air device, and the fresh air device is installed in the casing 10 to introduce outdoor fresh air into the room through the fresh air device; wherein, a fresh air outlet 32 ​​and an air-conditioning outlet 20 are provided on the casing 10, the fresh air device has a fresh air channel, and the fresh air outlet 32 ​​is connected to the fresh air channel; the minimum distance between the fresh air outlet 32 ​​and the air-conditioning outlet 20 is the synchronous air supply distance, and the synchronous air supply distance is less than or equal to the predetermined air supply distance, so that the air-conditioning wind flowing out of the air-conditioning outlet 20 drives the fresh air flowing out of the fresh air outlet 32 ​​to flow. By setting a synchronous air supply distance between the fresh air outlet 32 ​​and the air-conditioning outlet 20, the air-conditioned air flowing out of the air-conditioning outlet 20 can drive the flow of fresh air flowing out of the fresh air outlet 32. This can not only increase the air supply distance of the fresh air flowing out of the fresh air outlet 32, so that the fresh air can be transported to a farther area where human bodies are active; it can also change the direction of the fresh air flowing out of the fresh air outlet 32 ​​by changing the air volume and flow direction of the air-conditioned air flowing out of the air-conditioning outlet 20, thereby achieving a better fresh air supply effect, and improving the indoor air quality quickly and effectively, thereby solving the problem that the air-conditioning indoor unit in the prior art cannot effectively improve the indoor air quality.

[0057] In addition, after the fresh air coming out of the fresh air outlet 32 ​​merges with the air-conditioned air coming out of the air-conditioning outlet 20, the fresh air coming out of the fresh air outlet 32 ​​can exchange heat with the air-conditioned air coming out of the air-conditioning outlet 20, thereby increasing the supply air temperature of the fresh air, making the supply air temperature of the fresh air closer to the air-conditioning air temperature, thereby improving human comfort.

[0058] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0059] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0060] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air conditioner indoor unit, characterized in that: include: Housing (10); A fresh air device, the fresh air device being installed in the casing (10) so as to introduce outdoor fresh air into the room through the fresh air device; The housing (10) is provided with a fresh air outlet (32) and an air conditioning outlet (20), the fresh air device has a fresh air channel, and the fresh air outlet (32) is connected to the fresh air channel; The minimum distance between the bottom end of the fresh air outlet (32) and the top end of the air conditioning outlet (20) is a synchronous air supply distance, and the synchronous air supply distance is less than or equal to a predetermined air supply distance, so that the air conditioning air flowing out of the air conditioning outlet (20) drives the fresh air flowing out of the fresh air outlet (32); the predetermined air supply distance is one half of the height of the fresh air outlet (32); The fresh air outlet (32) is located at the upper end of the housing (10), and the air conditioning outlet (20) is located below the fresh air outlet (32); The housing (10) is also provided with a return air port (31), and the return air port (31) is located below the air-conditioning outlet (20); the fresh air device also has a return air channel (33), and the return air port (31) is in communication with the return air channel (33); The housing (10) is also provided with a fresh air inlet (36), the fresh air inlet (36) being in communication with the outside and the fresh air passage, so as to introduce outdoor fresh air into the fresh air passage; the fresh air inlet (36) is located at the upper end of the housing (10); The fresh air device comprises a heat exchanger (35), and at least a portion of the fresh air channel and at least a portion of the return air channel (33) are both located in the heat exchanger (35); the heat exchanger (35) is arranged at the upper end of the inner cavity of the casing (10).

2. The air conditioner indoor unit according to claim 1, characterized in that: The maximum distance between the centerline of the return air port (31) and the bottom end of the housing (10) is a predetermined return air distance, and the predetermined return air distance has a value range of 1.1 m to 1.6 m.

3. The air conditioner indoor unit according to claim 2, characterized in that: The maximum distance between the top end of the return air outlet (31) and the bottom end of the air-conditioning outlet (20) is greater than or equal to one third of the height of the return air outlet (31).

4. The air conditioner indoor unit according to claim 1, characterized in that: An air guide plate (12) is provided at the fresh air outlet (32) so as to adjust the direction of the fresh air flowing out of the fresh air outlet (32) by controlling the air guide plate (12).

5. The air conditioner indoor unit according to claim 4, characterized in that: The wind guide plate (12) comprises a wind guide blade (13), and the angle between the wind guide blade (13) and the vertical plane ranges from 0 degrees to 90 degrees.

6. The air conditioner indoor unit according to claim 2, characterized in that: The housing (10) is also provided with an air outlet (37), the air outlet (37) being in communication with the outside and the return air passage (33), so that the return air in the return air passage (33) is discharged through the air outlet (37); Wherein, the air outlet (37) is located at the upper end of the casing (10).

7. The air conditioner indoor unit according to claim 2, characterized in that: The portion of the fresh air channel located in the heat exchanger (35) and the portion of the return air channel (33) located in the heat exchanger (35) are arranged crosswise.

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