Air conditioner indoor unit

Abstract

This application relates to the field of home appliance technology, and more particularly to an air conditioner indoor unit. An air conditioner indoor unit includes: an air conditioner housing with an air inlet and an air outlet; a heat treatment module disposed within the air conditioner housing; and a fresh air module disposed within the air conditioner housing, including: a housing; and a filter element disposed in a fresh air duct. The housing includes: a fresh air volute; a stale air volute; a fresh air fan; and a stale air fan. The stale air volute is stacked on top of the fresh air volute along a stacking direction, and the angle between the extension direction of the fresh air volute and the extension direction of the stale air volute is γ, where γ ≥ 0° and γ ≤ 10°. The air conditioner indoor unit provided by this application has a larger exhaust volume of the stale air fan, resulting in higher efficiency of the fresh air module in optimizing indoor air quality, thus providing a better user experience.

Description

Technical Field

[0001] This application relates to the field of home appliance technology, and more particularly to an indoor unit of an air conditioner. Background Technology

[0002] As people's demands for the functionality of air conditioner indoor units increase, indoor units integrating fresh air modules are becoming increasingly popular. Specifically, a fresh air module typically includes a fresh air fan and a stale air fan. When the fresh air fan rotates, it draws in fresh outdoor air, while the stale air fan exhausts stale indoor air to the outside. The combined action of these two fans aims to optimize indoor air quality. However, in related technologies, the exhaust volume of the stale air fan is usually relatively small, resulting in lower efficiency in optimizing indoor air quality and consequently a less than ideal user experience for the air conditioner indoor unit. Utility Model Content

[0003] This application discloses an indoor air conditioner unit with a large exhaust volume of the waste air fan, which makes the fresh air module more efficient in optimizing indoor air quality, thereby improving the user experience of the indoor air conditioner unit.

[0004] To achieve the above objectives, this application discloses an indoor air conditioning unit, comprising:

[0005] An air conditioner housing, wherein an air conditioner inlet and an air conditioner outlet are provided on the air conditioner housing;

[0006] A heat treatment module is disposed inside the air conditioner housing. It is used to draw air from outside the air conditioner housing into the air conditioner housing through the air conditioner inlet for heat exchange, and blow the heat-exchanged air out of the air conditioner housing through the air conditioner outlet.

[0007] A fresh air module, wherein the fresh air module is disposed in the air conditioner housing, includes:

[0008] The housing has a fresh air duct and a waste air duct formed inside it. The housing is provided with a fresh air inlet and a fresh air outlet at both ends of the fresh air duct, and a waste air inlet and a waste air outlet at both ends of the waste air duct.

[0009] The housing includes:

[0010] The fresh air volute, wherein the first cavity of the fresh air volute forms at least a portion of the fresh air duct;

[0011] Fresh air volute, one end of which is disposed on the fresh air volute and communicates with the first cavity, and the other end of which is communicated with the fresh air outlet;

[0012] A volute for polluting air, wherein the second cavity of the volute for polluting air forms at least a portion of the polluting air duct;

[0013] A sludge volute neck, one end of which is disposed on the sludge volute shell and communicates with the second cavity, and the other end of which is communicated with the sludge outlet;

[0014] A fresh air fan is disposed in the first cavity and is used to draw in fresh outdoor air into the first cavity and discharge it into the room.

[0015] A sludge fan, which is installed in the second cavity, is used to draw sludge from the room into the second cavity and discharge it to the outside.

[0016] The contaminated air volute is stacked on top of the fresh air volute along the stacking direction, and the angle between the extension direction of the fresh air volute neck and the extension direction of the contaminated air volute neck is γ, where γ ≥ 0° and γ ≤ 10°.

[0017] By ensuring that the angle γ between the extension direction of the fresh air volute and the extension direction of the stale air volute is within the range of 0° to 10°, the orientation of the fresh air volute and the stale air volute can be approximately the same or completely identical. This allows the periphery of the stale air volute and the periphery of the fresh air volute to be aligned as much as possible along the stacking direction. Consequently, the diameter of the stale air fan located in the second cavity of the stale air volute can be maximized, thereby maximizing the exhaust volume of the stale air fan. This results in higher efficiency of the fresh air module in optimizing indoor air quality, leading to a better user experience for the indoor unit of the air conditioner.

[0018] Optionally, along the stacking direction, at least a portion of the periphery of the polluted air volute is aligned with the periphery of the fresh air volute.

[0019] By aligning at least part of the periphery of the waste air volute with the periphery of the fresh air volute along the stacking direction, on the one hand, the overall appearance of the fresh air module can be made more uniform, thereby improving the appearance of the fresh air module. On the other hand, the diameter of the waste air fan and the diameter of the fresh air fan can be made approximately equal, thus making the exhaust volume of the waste air fan and the exhaust volume of the fresh air fan approximately equal. Therefore, the fresh air module can optimize indoor air quality more efficiently, thereby making the user experience of the indoor unit of the air conditioner better.

[0020] Optionally, the fresh air volute includes:

[0021] The first half-shell, along the stacking direction, has a first opening on the side of the first half-shell away from the sludge volute, and the first opening is connected to the fresh air inlet;

[0022] The second half-shell is aligned with the side of the first half-shell opposite to the first opening along the stacking direction, so that the second half-shell and the first half-shell form the first cavity. The sludge volute is disposed on the side of the second half-shell opposite to the first half-shell along the stacking direction, so that the sludge volute and the second half-shell form the second cavity. A second opening is provided on the side of the sludge volute opposite to the first half-shell, and the second opening forms the sludge inlet.

[0023] Since the fresh air volute includes a first half-shell and a second half-shell, and since the polluted air volute is disposed on the side of the second half-shell opposite to the first half-shell along the stacking direction, so that the polluted air volute and the second half-shell form a second cavity, the polluted air volute can utilize part of the structure of the fresh air volute to form the second cavity. On the one hand, it can reduce the number of parts of the entire fresh air module to a certain extent, thereby reducing the cost of the fresh air module. On the other hand, it can make the thickness of the entire fresh air module along the stacking direction thinner.

[0024] Optionally, the fresh air module further includes:

[0025] The driving component includes a fresh air fan and a stale air fan, both of which are connected to the rotating shaft of the driving component. The driving component is used to drive the fresh air fan and the stale air fan to rotate synchronously via the rotating shaft.

[0026] Since both the fresh air fan and the stale air fan are connected to the rotating shaft of the drive unit, when the rotating shaft of the drive unit starts to rotate, it can simultaneously drive the fresh air fan and the stale air fan to rotate synchronously. In this way, the fresh air fan and the stale air fan can share the same drive unit, eliminating the need to equip the fresh air fan and the stale air fan with separate drive units, thereby saving drive units. This makes the structure of the fresh air module more compact, smaller in size, and lower in manufacturing cost.

[0027] Optionally, the housing further includes:

[0028] The fresh air volute tongue is connected between the fresh air volute neck and the peripheral wall of the fresh air volute shell. The fresh air volute neck has a first surrounding wall opposite to the fresh air volute tongue. The minimum distance between the fresh air volute tongue and the first surrounding wall is D1.

[0029] The volute tongue is connected between the volute neck and the peripheral wall of the volute shell. The volute neck has a second wall opposite to the volute tongue. The minimum distance between the volute tongue and the second wall is D2.

[0030] Where D1 > D2.

[0031] By connecting the sludge tongue to the sludge neck and the peripheral wall of the sludge shell, the sludge tongue can, on the one hand, prevent the sludge from circulating within the sludge shell, thus avoiding a decrease in exhaust volume and efficiency loss due to sludge backflow; on the other hand, it can also reduce the noise during the operation of the fresh air module.

[0032] Furthermore, the inventors have discovered that by making D1 > D2, the exhaust volume of the waste air fan can be increased while keeping the outer diameter of the waste air fan constant. This can further improve the efficiency of the fresh air module 3 in optimizing indoor air quality, thereby making the user experience of the indoor unit of the air conditioner better.

[0033] Optionally, the fresh air module further includes a total heat exchanger, which is disposed at the intersection of the fresh air duct and the waste air duct. The total heat exchanger has a first windward surface and a first leeward surface arranged opposite to each other along the extension direction of the fresh air duct. The other end of the fresh air volute is opposite to the first windward surface, and the fresh air in the fresh air volute enters the total heat exchanger sequentially through the other end of the fresh air volute and the first windward surface.

[0034] The fresh air volute also has a third enclosure opposite to the first enclosure, the angle between the third enclosure and the first windward surface being a1, a1≥15°, a1≤80°, and / or, the polluted air volute has a fourth enclosure opposite to the second enclosure, the angle between the fourth enclosure and the first windward surface being a2, a2≥15°, a2≤80°.

[0035] By ensuring that the angle a1 between the third enclosure wall and the first windward surface is within the range of 15° to 80°, the inventors have discovered that this allows the fresh air blown onto the first windward surface of the total heat exchanger via the fresh air volute to pass evenly across the first windward surface. This maximizes the contact area between the fresh air and the total heat exchanger, allowing the fresh air to pass through the small channels of the total heat exchanger as much as possible. On the one hand, this reduces the wind pressure at the total heat exchanger, thereby increasing the exhaust volume of the fresh air. On the other hand, it also increases the heat exchange efficiency between the fresh air and the stale air.

[0036] Optionally, the total heat exchanger has a second windward side and a second leeward side arranged opposite to each other along the extension direction of the sludge duct, and the sludge in the sludge volute enters the total heat exchanger through the other end of the sludge volute and the second windward side.

[0037] The housing includes a first plate spaced apart from the other end of the vortex neck, and a second plate spaced apart from the second windward surface. A guide surface is provided at the connection between the second plate and the first plate. The angle between the guide surface and the second windward surface is β, where β ≥ 15° and β ≤ 60°.

[0038] The inventors discovered that when the angle β between the guide surface and the second windward surface is within the range of 15° to 60°, the guide surface can play a good guiding role in the flow of the polluted air, so that the polluted air can flow into the total heat exchanger with very little energy loss when passing through the guide surface, thereby increasing the exhaust volume of the polluted air and also improving the heat exchange efficiency of the total heat exchanger.

[0039] Optionally, along the axial direction of the wastewater fan, the height of the wastewater fan is d, where d ≥ 20 mm and d ≤ 35 mm.

[0040] When the height d of the stale air fan is greater than 35mm, the fan will be too large, resulting in an overly large and bulky fresh air module. When the height d of the stale air fan is less than 20mm, the fan will be too small, leading to insufficient stale air exhaust volume. Therefore, when the height d of the stale air fan is within the range of 20mm to 35mm, it allows for a larger stale air exhaust volume while maintaining a smaller overall fan size.

[0041] Optionally, the wastewater fan includes:

[0042] The first turntable; and,

[0043] A plurality of first fan blades are arranged in an array on the surface of the first turntable along the periphery of the first turntable. Each first fan blade includes a distal end away from the center of the first turntable. Along the axial direction of the waste air fan, the distal end overlaps with the periphery of the first turntable and the distal end is a free end.

[0044] By aligning the distal end of the first blade with the periphery of the first turntable, the effective diameter of the waste air fan can be maximized while maintaining a fixed diameter for the first turntable, thereby increasing the waste air exhaust volume. Furthermore, by making the distal end a free end, no reinforcing ribs are required, further increasing the effective diameter of the waste air fan and thus increasing its waste air exhaust volume.

[0045] Optionally, a rounded corner is provided at the connection between the first fan blade and the first turntable, and the radius of the rounded corner is R, where R > 0 and R ≤ 3 mm.

[0046] By aligning the distal end of the first blade with the periphery of the first turntable, the effective diameter of the waste air fan can be maximized while maintaining a fixed diameter for the first turntable, thereby increasing the waste air exhaust volume. Furthermore, by making the distal end a free end, no reinforcing ribs are required, further increasing the effective diameter of the waste air fan and thus increasing its waste air exhaust volume.

[0047] Optionally, the distance between the periphery of the sludge volute and the periphery of the fresh air volute along the radial direction of the sludge volute is L, where L≥0mm and L≤3mm.

[0048] By ensuring that the radial distance L between the periphery of the sludge volute and the periphery of the fresh air volute is within the range of 0mm to 3mm, the radial dimensions of the sludge volute and the fresh air volute can be made approximately equal. In this way, compared to the method in related technologies where the size of the sludge volute is significantly smaller than that of the fresh air volute, the diameter of the sludge fan installed in the second cavity of the sludge volute can be increased as much as possible, thereby increasing the exhaust volume of the sludge fan. This results in a higher efficiency of the fresh air module in optimizing indoor air quality, leading to a better user experience for the indoor unit of the air conditioner.

[0049] Compared with the prior art, the beneficial effects of this application are as follows:

[0050] In this application, by making the angle γ between the extension direction of the fresh air volute and the extension direction of the sludge volute within the range of 0° to 10°, the orientation of the fresh air volute and the sludge volute can be made approximately the same or completely identical. In this way, the periphery of the sludge volute and the periphery of the fresh air volute along the stacking direction can be aligned as much as possible, thereby maximizing the diameter of the sludge fan installed in the second cavity of the sludge volute, thereby maximizing the exhaust volume of the sludge fan, and thus making the fresh air module more efficient in optimizing indoor air quality, thereby improving the user experience of the indoor unit of the air conditioner. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 This is a schematic diagram of the structure of an air conditioner indoor unit according to an embodiment of this application;

[0053] Figure 2 yes Figure 1A structural schematic diagram of the indoor unit of an air conditioner from another perspective;

[0054] Figure 3 yes Figure 1 A structural schematic diagram of the indoor unit of an air conditioner from another perspective;

[0055] Figure 4 yes Figure 3 A cross-sectional view of the indoor air conditioner unit at position AA;

[0056] Figure 5 yes Figure 3 A sectional view at position BB in the middle;

[0057] Figure 6 yes Figure 5 Axonometric drawing of the fresh air module;

[0058] Figure 7 yes Figure 6 A structural diagram of the fresh air module from another perspective;

[0059] Figure 8 yes Figure 6 An exploded view of a fresh air module;

[0060] Figure 9 yes Figure 8 An exploded view of a fresh air module;

[0061] Figure 10 yes Figure 6 A structural diagram of the fresh air module from another perspective;

[0062] Figure 11 yes Figure 10 A structural diagram of the fresh air module from another perspective;

[0063] Figure 12 yes Figure 11 A cross-sectional view of the fresh air module at position CC;

[0064] Figure 13 yes Figure 7 A structural diagram of the fresh air module from another perspective;

[0065] Figure 14 yes Figure 13 An exploded view of a fresh air module;

[0066] Figure 15 yes Figure 9 A schematic diagram of the structure of the medium-pollution ventilation fan.

[0067] Explanation of reference numerals in the attached figures:

[0068] 1-Air conditioner housing; 11-Air conditioner air inlet; 12-Air conditioner air outlet;

[0069] 2-Heat treatment module; 21-Heat exchanger; 22-Fan;

[0070] 3-Fresh air module; 31-Shell; 31a-First plate; 31b-Second plate; 31c-Guide surface; 310-Fresh air volute; 3101-Fresh air volute tongue; 3102-First enclosure; 3103-Third enclosure; 311-Fresh air duct; 312-Stale air duct; 313-Fresh air inlet; 314-Fresh air outlet; 315-Stale air inlet; 316-Stale air outlet; 317-Fresh air volute shell; 3171-First cavity; 3172-First half-shell; 3172a-First opening; 3173-Second half-shell; 318-Sewage volute; 318a-Second opening; 3181-Second cavity; 319-Sewage volute neck; 3191-Sewage volute tongue; 3192-Second enclosure wall; 3193-Fourth enclosure wall; 32-Total heat exchanger; 321-First windward side; 322-First leeward side; 323-Second windward side; 324-Second leeward side; 33-Filter element; 34-Fresh air fan; 35-Sewage fan; 351-First turntable; 3511-Center end; 352-First fan blade; 36-Drive element; 361-Rotating shaft;

[0071] 100 - Air conditioner indoor unit. Detailed Implementation

[0072] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0073] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0074] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0075] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0076] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0077] Before explaining the technical solution of the application, the background technology of this application shall be explained first.

[0078] As people's demands for the functionality of air conditioner indoor units increase, indoor units integrating fresh air modules are becoming increasingly popular. Specifically, a fresh air module typically includes a fresh air fan and a stale air fan. When the fresh air fan rotates, it draws fresh outdoor air into the room, while the stale air fan exhausts stale indoor air to the outside. The combined action of the fresh air fan and the stale air fan achieves the goal of optimizing indoor air quality. However, in related technologies, the exhaust volume of the stale air fan is usually relatively small, resulting in low efficiency in optimizing indoor air quality and consequently a poor user experience for the air conditioner indoor unit. Therefore, this application provides a new air conditioner indoor unit to solve the above problems.

[0079] The technical solution of this application will be described below with reference to specific embodiments and accompanying drawings.

[0080] Figure 1 This is a schematic diagram of the structure of an air conditioner indoor unit 100 according to an embodiment of this application. Figure 2 yes Figure 1 A schematic diagram of the structure of an indoor air conditioning unit from another perspective.

[0081] See Figure 1 and Figure 2 The indoor unit of the air conditioner 100 includes an air conditioner housing 1, on which an air conditioner air inlet 11 and an air conditioner air outlet 12 are provided.

[0082] The aforementioned air conditioner indoor unit 100 can be a wall-mounted air conditioner indoor unit 100, or it can be a cabinet air conditioner indoor unit 100, etc. This embodiment does not limit this.

[0083] Taking the indoor unit 100 of the air conditioner as an example, the air inlet 11 of the air conditioner can be set on the top surface of the air conditioner casing 1, and the air outlet 12 of the air conditioner can be set on the front or bottom surface of the air conditioner casing 1, etc. This embodiment does not limit this.

[0084] The shape of the air conditioner housing 1 can be roughly cuboid. Of course, the air conditioner housing 1 can also be other possible shapes, which are not limited in this embodiment.

[0085] Figure 3 yes Figure 1 A structural schematic diagram of the indoor unit 100 of the air conditioner from another perspective. Figure 4 yes Figure 3 A cross-sectional view of the indoor unit 100 of the air conditioner at position AA.

[0086] See Figure 3 and Figure 4 In some embodiments, the indoor unit 100 of the air conditioner also includes a heat treatment module 2, which is disposed inside the air conditioner housing 1 and is used to draw air outside the air conditioner housing 1 into the air conditioner housing 1 through the air conditioner inlet 11 for heat exchange, and blow the heat-exchanged air out of the air conditioner housing 1 through the air conditioner outlet 12.

[0087] Since the heat treatment module 2 is located inside the air conditioner housing 1, and the heat treatment module 2 can draw air from outside the air conditioner housing 1 into the air conditioner housing 1 through the air conditioner inlet 11 for heat exchange, and blow the air after heat exchange out of the air conditioner housing 1 through the air conditioner outlet 12, when the air conditioner indoor unit 100 includes the heat treatment module 2, the air can be heated or cooled under the action of the heat treatment module 2, thereby achieving the purpose of heating or cooling the indoor unit.

[0088] Among them, see Figure 4 The aforementioned heat treatment module 2 may include a heat exchanger 21 and a fan 22. The fan 22 can draw air from outside the air conditioner casing 1 into the air conditioner casing 1 through the air conditioner inlet 11. When the air enters the air conditioner casing 1, the heat exchanger 21 can perform heat exchange on the air. Then, the fan 22 can blow the heat-exchanged air out of the air conditioner casing 1 through the air conditioner outlet 12, thereby achieving the purpose of heating or cooling the room.

[0089] Figure 5 yes Figure 3 A cross-sectional view at position BB in the middle. Figure 6 yes Figure 5 Axonometric view of the fresh air module 3.

[0090] See Figure 5 and Figure 6 The indoor unit 100 of the air conditioner also includes a fresh air module 3, which is installed in the air conditioner casing 1.

[0091] Among them, the aforementioned fresh air module 3 can be as follows: Figure 5 The fresh air module 3 is installed inside the air conditioner housing 1 as shown. Of course, the fresh air module 3 can also be installed outside the air conditioner housing 1, etc. This embodiment does not limit this.

[0092] When the fresh air module 3 is installed inside the air conditioner housing 1, on the one hand, the air conditioner housing 1 can wrap the fresh air module 3, which can protect the fresh air module 3 and make the environment where the fresh air module 3 is located safer. On the other hand, it can improve the appearance of the air conditioner indoor unit 100 to a certain extent.

[0093] See Figure 6 and Figure 7 , Figure 7 yes Figure 6 The diagram shows the structure of the fresh air module 3 from another perspective. In some embodiments, the fresh air module 3 includes a housing 31, within which a fresh air duct 311 and a waste air duct 312 are formed. The housing 31 is provided with a fresh air inlet 313, a fresh air outlet 314, a waste air inlet 315, and a waste air outlet 316. The fresh air inlet 313 and the fresh air outlet 314 are located at both ends of the fresh air duct 311, and the waste air inlet 315 and the waste air outlet 316 are located at both ends of the waste air duct 312.

[0094] The fresh air inlet 313 and the waste air outlet 316 can both be formed by the opening of a tubular structure. This makes it easy to install extension pipes at the fresh air inlet 313 and the waste air outlet 316 respectively, so that the fresh air inlet 313 and the waste air outlet 316 can be connected to the outside through the extension pipes respectively.

[0095] The shapes of the fresh air outlet 314 and the waste air inlet 315 can be circular, rectangular or irregular, etc., and this embodiment does not limit them.

[0096] In some embodiments, see Figure 6 and Figure 7 The fresh air module 3 also includes a total heat exchanger 32, which is located at the intersection of the fresh air duct 311 and the waste air duct 312 for heat exchange between the fresh air in the fresh air duct 311 and the waste air in the waste air duct 312.

[0097] Since the total heat exchanger 32 is installed at the intersection of the fresh air duct 311 and the waste air duct 312, the fresh air in the fresh air duct 311 and the waste air in the waste air duct 312 can pass through the total heat exchanger 32 respectively. In this way, during the process of the waste air passing through the total heat exchanger 32, the total heat exchanger 32 can absorb the heat in the waste air to avoid heat waste, and during the process of the fresh air passing through the total heat exchanger 32, the heat is transferred to the fresh air, thereby achieving the purpose of heating the fresh air, so that the temperature of the fresh air is approximately equal to the temperature of the waste air, and thus the fresh air will not have a significant impact on the indoor temperature after entering the room, making the indoor temperature more comfortable.

[0098] In some embodiments, see Figure 6 The fresh air module 3 also includes a filter element 33, which is disposed in the fresh air duct 311 and is used to filter the fresh air in the fresh air duct 311.

[0099] Since the filter element 33 is located in the fresh air duct 311, when the outdoor fresh air is drawn into the fresh air duct 311 through the fresh air inlet 313 and discharged into the room through the fresh air outlet 314, the fresh air will pass through the filter element 33. In this way, the filter element 33 can filter the fresh air, making the fresh air discharged into the room cleaner and preventing dust and other contaminants from entering the room.

[0100] In some embodiments, see Figure 6 and Figure 8 , Figure 8 yes Figure 6 An exploded view of the fresh air module 3 shows that the housing 31 includes a fresh air volute 317, and the first cavity 3171 of the fresh air volute 317 forms at least a portion of the fresh air duct 311.

[0101] Since the first cavity 3171 of the fresh air volute 317 forms at least part of the fresh air duct 311, the first cavity 3171 will be located on the flow path of fresh air in the fresh air duct 311, so that the first cavity 3171 will also have fresh air.

[0102] In some embodiments, see Figure 7 The housing 31 also includes a sludge volute 318, the second cavity 3181 of which forms at least a portion of the sludge duct 312.

[0103] Since the second cavity 3181 of the sludge volute 318 forms at least part of the sludge duct 312, the second cavity 3181 will be located on the flow path of the sludge duct 312, so that the second cavity 3181 will also contain sludge.

[0104] In some embodiments, see Figure 8 and Figure 9 , Figure 9yes Figure 8 An exploded view of the fresh air module 3, which also includes a fresh air fan 34. The fresh air fan 34 is disposed in the first cavity 3171 and is used to draw fresh outdoor air into the first cavity 3171 through the fresh air inlet 313 and discharge it into the room through the fresh air outlet 314.

[0105] Since the fresh air fan 34 is located inside the first cavity 3171, when the fresh air fan 34 starts to operate, it can draw fresh outdoor air into the first cavity 3171 through the fresh air inlet 313 and discharge it into the room through the fresh air outlet 314, thereby achieving the purpose of providing fresh air to the room and optimizing the indoor air quality, making the indoor air fresher.

[0106] In some embodiments, see Figure 8 and Figure 9 The fresh air module 3 also includes a stale air fan 35, which is located in the second cavity 3181 and is used to draw indoor stale air into the second cavity 3181 through the stale air inlet 315 and discharge it to the outside through the stale air outlet 316.

[0107] Since the stale air fan 35 is located inside the second cavity 3181, when the stale air fan 35 starts to operate, it can draw indoor stale air into the second cavity 3181 through the stale air inlet 315 and discharge it to the outside through the stale air outlet 316, thereby achieving the purpose of optimizing indoor air quality and making the indoor air fresher.

[0108] In some embodiments, see Figure 10 , Figure 10 yes Figure 6 The diagram shows the structure of the fresh air module 3 from another perspective. The sludge volute 318 is stacked on top of the fresh air volute 317 along the stacking direction. The distance between the periphery of the sludge volute 318 and the periphery of the fresh air volute 317 along the radial direction of the sludge volute 318 is L, where L≥0mm and L≤3mm.

[0109] By ensuring that the radial distance L between the periphery of the waste air volute 318 and the periphery of the fresh air volute 317 along the waste air volute 318 is within the range of 0mm to 3mm, the radial dimensions of the waste air volute 318 and the fresh air volute 317 along the fresh air volute 317 can be approximately equal. In this way, compared to the method in related technologies where the size of the waste air volute 318 is significantly smaller than that of the fresh air volute 317, the diameter of the waste air fan 35 disposed in the second cavity 3181 of the waste air volute 318 can be increased as much as possible, thereby increasing the exhaust volume of the waste air fan 35. This results in a higher efficiency of the fresh air module 3 in optimizing indoor air quality, thus providing a better user experience for the indoor unit 100 of the air conditioner.

[0110] Specifically, the distance L between the periphery of the volute projection and the periphery of the fresh air volute 317 can be 0mm, 1mm or 3mm, etc., and this embodiment does not limit it.

[0111] When the radial distance L between the periphery of the waste air volute 318 and the periphery of the fresh air volute 317 is less than 0 mm, the size of the waste air volute 318 will be too small compared to the size of the fresh air volute 317, resulting in insufficient exhaust volume of the waste air fan 35 and thus affecting the efficiency of the fresh air module 3 in optimizing indoor air quality. When the radial distance L between the periphery of the waste air volute 318 and the periphery of the fresh air volute 317 is greater than 3 mm, the size of the fresh air volute 317 will be too small compared to the size of the waste air volute 318, resulting in insufficient exhaust volume of the fresh air fan 34 and similarly affecting the efficiency of the fresh air module 3 in optimizing indoor air quality.

[0112] Based on this, when the distance L between the periphery of the waste air volute 318 and the periphery of the fresh air volute 317 along the radial direction of the waste air volute 318 is within the range of 0mm to 3mm, the dimensions of the waste air volute 318 and the fresh air volute 317 along the radial direction of the fresh air volute 317 can be made approximately equal. Consequently, the exhaust volume of the waste air fan 35 and the exhaust volume of the fresh air fan 34 can be made approximately equal. This allows the fresh air module 3 to optimize indoor air quality more efficiently, resulting in a better user experience for the indoor unit 100 of the air conditioner.

[0113] In some embodiments, see Figure 8 , Figure 9 and Figure 13 The housing 31 also includes a fresh air vortex 310 and a polluted air vortex 319, one end of the fresh air vortex 310 ( Figure 9 The rear end of the fresh air volute 310 is located on the fresh air volute 317 and communicates with the first cavity 3171. The other end of the fresh air volute 310 ( Figure 9 The front end of the fresh air volute 310 is connected to the fresh air outlet 314. One end of the polluted air volute 319 is located in the polluted air volute 318 and is connected to the second cavity 3181. The other end of the polluted air volute 319 is connected to the polluted air outlet 316. The angle between the extension direction of the fresh air volute 310 and the extension direction of the polluted air volute 319 is γ, where γ ≥ 0° and γ ≤ 10°.

[0114] By ensuring that the angle γ between the extension direction of the fresh air volute 310 and the extension direction of the polluted air volute 319 is within the range of 0° to 10°, the orientation of the fresh air volute 310 and the polluted air volute 319 can be approximately the same or completely identical. In this way, the periphery of the polluted air volute 318 and the periphery of the fresh air volute 317 can be aligned as much as possible along the stacking direction. This allows for maximizing the diameter of the polluted air fan 35 located in the second cavity 3181 of the polluted air volute 318, thereby maximizing the exhaust volume of the polluted air fan 35. Consequently, the fresh air module 3 can optimize indoor air quality more efficiently, resulting in a better user experience for the indoor unit 100 of the air conditioner.

[0115] Specifically, γ can be 0°, 5° or 10°, etc., as long as γ is within the range of 0° to 10°. This embodiment does not limit this.

[0116] In some embodiments, see Figure 1 , Figure 4 and Figure 5 The indoor unit 100 of the air conditioner includes an air conditioner casing 1, a heat treatment module 2, and a fresh air module 3, wherein, see Figure 1 and Figure 2 The air conditioner housing 1 is provided with an air inlet 11 and an air outlet 12. The heat treatment module 2 is located inside the air conditioner housing 1 and is used to draw air from outside the air conditioner housing 1 into the air conditioner housing 1 through the air inlet 11 for heat exchange, and blow the heat-exchanged air out of the air conditioner housing 1 through the air outlet 12. The fresh air module 3 is located inside the air conditioner housing 1.

[0117] See Figure 6 and Figure 7 The fresh air module 3 includes a housing 31, a total heat exchanger 32, a filter element 33, a fresh air fan 34, and a waste air fan 35. A fresh air duct 311 and a waste air duct 312 are formed inside the housing 31. A fresh air inlet 313, a fresh air outlet 314, a waste air inlet 315, and a waste air outlet 316 are provided on the housing 31. The fresh air inlet 313 and the fresh air outlet 314 are located at both ends of the fresh air duct 311, and the waste air inlet 315 and the waste air outlet 316 are located at both ends of the waste air duct 312.

[0118] A total heat exchanger 32 is located at the intersection of the fresh air duct 311 and the waste air duct 312 for heat exchange between the fresh air in the fresh air duct 311 and the waste air in the waste air duct 312. A filter element 33 is located in the fresh air duct 311 for filtering the fresh air in the fresh air duct 311.

[0119] See Figure 9The housing 31 includes a fresh air volute 317 and a stale air volute 318. The first cavity 3171 of the fresh air volute 317 forms at least a portion of the fresh air duct 311, and the second cavity 3181 of the stale air volute 318 forms at least a portion of the stale air duct 312. A fresh air fan 34 is disposed in the first cavity 3171 and is used to draw fresh outdoor air into the first cavity 3171 through the fresh air inlet 313 and discharge it into the room through the fresh air outlet 314. A stale air fan 35 is disposed in the second cavity 3181 and is used to draw stale indoor air into the second cavity 3181 through the stale air inlet 315 and discharge it to the outside through the stale air outlet 316.

[0120] Among them, see Figure 10 The distance between the periphery of the waste air volute 318 and the periphery of the fresh air volute 317 along the radial direction of the waste air volute 318 is L, where L≥0mm and L≤3mm.

[0121] In this embodiment, since the total heat exchanger 32 is installed at the intersection of the fresh air duct 311 and the waste air duct 312, the fresh air in the fresh air duct 311 and the waste air in the waste air duct 312 can pass through the total heat exchanger 32 respectively. In this way, during the process of the waste air passing through the total heat exchanger 32, the total heat exchanger 32 can absorb the heat in the waste air to avoid heat waste, and during the process of the fresh air passing through the total heat exchanger 32, the heat is transferred to the fresh air, thereby achieving the purpose of heating the fresh air, so that the temperature of the fresh air is approximately equal to the temperature of the waste air, and thus the fresh air will not have a significant impact on the indoor temperature after entering the room, making the indoor temperature more comfortable.

[0122] In addition, since the filter element 33 is located in the fresh air duct 311, when the outdoor fresh air is drawn into the fresh air duct 311 through the fresh air inlet 313 and discharged into the room through the fresh air outlet 314, the fresh air will pass through the filter element 33. In this way, the filter element 33 can filter the fresh air, making the fresh air discharged into the room cleaner and preventing dust and other contaminants from entering the room.

[0123] Furthermore, by ensuring that the radial distance L between the periphery of the waste air volute 318 and the periphery of the fresh air volute 317 along the waste air volute 318 is within the range of 0mm to 3mm, the radial dimensions of the waste air volute 318 and the fresh air volute 317 along the fresh air volute 317 can be approximately equal. In this way, compared to the method in related technologies where the size of the waste air volute 318 is significantly smaller than that of the fresh air volute 317, the diameter of the waste air fan 35 disposed in the second cavity 3181 of the waste air volute 318 can be increased as much as possible, thereby increasing the exhaust volume of the waste air fan 35. This, in turn, makes the fresh air module 3 more efficient in optimizing indoor air quality, resulting in a better user experience for the indoor unit 100 of the air conditioner.

[0124] In some embodiments, see Figure 10 Along the stacking direction ( Figure 10 (In the Y-axis direction), at least part of the periphery of the polluted air volute 318 is aligned with the periphery of the fresh air volute 317.

[0125] By aligning at least a portion of the periphery of the waste air volute 318 with the periphery of the fresh air volute 317 along the stacking direction, on the one hand, the overall appearance of the fresh air module 3 can be made more uniform, thereby improving the appearance of the fresh air module 3; on the other hand, the diameter of the waste air fan 35 can be made approximately equal to the diameter of the fresh air fan 34, thereby making the exhaust volume of the waste air fan 35 and the exhaust volume of the fresh air fan 34 approximately equal. Therefore, the fresh air module 3 can optimize indoor air quality more efficiently, thus providing a better user experience for the indoor unit 100 of the air conditioner.

[0126] In some embodiments, see Figure 8 and Figure 9 The fresh air volute 317 includes a first half-shell 3172 and a second half-shell 3173, wherein, along the stacking direction ( Figure 9 (in the Y-axis direction), on the side of the first half-shell 3172 away from the contaminated volute 318 ( Figure 9 The left side of the first half-shell 3172 has a first opening 3172a, which communicates with the fresh air inlet 313. The second half-shell 3173 is aligned with the side of the first half-shell 3172 opposite to the first opening 3172 along the stacking direction. Figure 9 (to the right side of the first half-shell 3172), so that the second half-shell 3173 and the first half-shell 3172 form the first cavity 3171.

[0127] The volute 318 is disposed along the stacking direction on the side of the second half-shell 3173 opposite to the first half-shell 3172. Figure 9 The right side of the second half-shell 3173, so that the volute 318 and the second half-shell 3173 form a second cavity 3181, on the side of the volute 318 facing away from the first half-shell 3172 ( Figure 9 The right side of the volute 318 has a second opening 318a, which forms a sludge inlet 315.

[0128] Since the fresh air volute 317 includes a first half-shell 3172 and a second half-shell 3173, and since the polluted air volute 318 is disposed along the stacking direction on the side of the second half-shell 3173 opposite to the first half-shell 3172 ( Figure 9(Right side of the second half shell 3173) so that the polluted air volute 318 and the second half shell 3173 form the second cavity 3181. Therefore, the polluted air volute 318 can utilize part of the structure of the fresh air volute 317 to form the second cavity 3181. On the one hand, it can reduce the number of parts of the entire fresh air module 3 to a certain extent, thereby reducing the cost of the fresh air module 3. On the other hand, it can make the thickness of the entire fresh air module 3 along the stacking direction thinner.

[0129] In some embodiments, see Figure 9 , Figure 11 and Figure 12 , Figure 11 yes Figure 10 A structural schematic diagram of the fresh air module 3 from another perspective. Figure 12 yes Figure 11 The fresh air module 3 is shown in a cross-sectional view at position CC. The fresh air module 3 also includes a drive unit 36. The fresh air fan 34 and the waste air fan 35 are both connected to the rotation shaft 361 of the drive unit 36. The drive unit 36 ​​is used to drive the fresh air fan 34 and the waste air fan 35 to rotate synchronously through the rotation shaft 361.

[0130] Since both the fresh air fan 34 and the stale air fan 35 are connected to the rotating shaft 361 of the drive component 36, when the rotating shaft 361 of the drive component 36 starts to rotate, it can simultaneously drive the fresh air fan 34 and the stale air fan 35 to rotate synchronously. In this way, the fresh air fan 34 and the stale air fan 35 can share the same drive component 36, eliminating the need to equip the fresh air fan 34 and the stale air fan 35 with separate drive components 36, thereby saving drive components 36. As a result, the structure of the fresh air module 3 can be more compact, the size can be smaller, and the manufacturing cost can be lower.

[0131] It should be noted that the aforementioned driving component 36 can be a stepper motor or a servo motor, etc., and this embodiment does not limit it.

[0132] In some embodiments, see Figure 9 and Figure 13 , Figure 13 yes Figure 7 A schematic diagram of the structure of the fresh air module 3 from another perspective. The housing 31 also includes a fresh air volute 310 and a fresh air volute tongue 3101. One end of the fresh air volute 310 ( Figure 9 The rear end of the fresh air volute 310 is located on the fresh air volute 317 and communicates with the first cavity 3171. The other end of the fresh air volute 310 ( Figure 9The front end of the fresh air volute 310 is connected to the fresh air outlet 314. The fresh air volute tongue 3101 is connected between the peripheral walls of the fresh air volute 310 and the fresh air volute 317. The fresh air volute 310 has a first surrounding wall 3102 opposite to the fresh air volute tongue 3101. The minimum distance between the fresh air volute tongue 3101 and the first surrounding wall 3102 is D1.

[0133] By connecting the fresh air volute tongue 3101 between the fresh air volute neck 310 and the peripheral wall of the fresh air volute shell 317, the fresh air volute tongue 3101 can, on the one hand, block the fresh air from circulating within the fresh air volute shell 317, thus avoiding a decrease in fresh air volume and efficiency loss due to fresh air backflow; on the other hand, it can also reduce the noise during the operation of the fresh air module 3.

[0134] In some embodiments, see Figure 8 , Figure 9 and Figure 13 The housing 31 also includes a vortex neck 319 and a vortex tongue 3191, wherein one end of the vortex neck 319 ( Figure 9 The rear end of the volute neck 319 is located on the volute housing 318 and communicates with the second cavity 3181. The other end of the volute neck 319 ( Figure 9 The front end of the middle volute neck 319 is connected to the volute outlet 316. The volute tongue 3191 is connected between the volute neck 319 and the peripheral wall of the volute shell 318. The volute neck 319 has a second wall 3192 opposite to the volute tongue 3191. The minimum distance between the volute tongue 3191 and the second wall 3192 is D2, where D1 > D2.

[0135] By connecting the sludge tongue 3191 between the sludge neck 319 and the peripheral wall of the sludge housing 318, the sludge tongue 3191 can, on the one hand, prevent the sludge from circulating within the sludge housing 318, avoiding a decrease in exhaust volume and efficiency loss due to sludge backflow; on the other hand, it can also reduce the noise of the fresh air module 3 during operation. Furthermore, the inventors' research has shown that by ensuring D1 > D2, the exhaust volume of the sludge fan 35 can be increased while maintaining a fixed outer diameter, thereby further improving the efficiency of the fresh air module 3 in optimizing indoor air quality, resulting in a better user experience for the indoor unit 100 of the air conditioner.

[0136] In some embodiments, see Figure 6 , Figure 13 and Figure 14 , Figure 14 yes Figure 13 An exploded view of the fresh air module 3 shows that the total heat exchanger 32 has a first windward surface 321 and a first leeward surface 322 arranged opposite to each other along the extension direction of the fresh air duct 311, and the other end of the fresh air volute 310 ( Figure 13 The left end of the fresh air volute 310 is opposite to the first windward surface 321. The fresh air in the fresh air volute 310 enters the total heat exchanger 32 sequentially through the other end of the fresh air volute 310 and the first windward surface 321.

[0137] The fresh air volute 310 also has a third enclosure 3103 opposite to the first enclosure 3102, and the angle between the third enclosure 3103 and the first windward surface 321 is a1, where a1≥15° and a1≤80°.

[0138] By ensuring that the angle α1 between the third enclosure wall 3103 and the first windward surface 321 is within the range of 15° to 80°, the inventors have discovered that this allows the fresh air blown from the fresh air volute 310 to the first windward surface 321 of the total heat exchanger 32 to pass evenly through the first windward surface 321. This maximizes the contact area between the fresh air and the total heat exchanger 32, allowing the fresh air to pass through the small channels of the total heat exchanger 32 as much as possible. On the one hand, this reduces the wind pressure at the total heat exchanger 32, thereby increasing the exhaust volume of the fresh air. On the other hand, it also increases the heat exchange efficiency between the fresh air and the stale air.

[0139] Wherein, a1 can be 15°, 20°, 30° or 80°, etc., as long as a1 is within the range of 15° to 80°, this embodiment does not limit it.

[0140] In some embodiments, see Figure 13 and Figure 14 The wind turbine neck 319 has a fourth enclosure 3193 opposite to the second enclosure 3192. The angle between the fourth enclosure 3193 and the first windward surface 321 is a2, where a2 ≥ 15° and a2 ≤ 80°.

[0141] By ensuring that the angle α2 between the fourth enclosure wall 3193 and the first windward surface 321 is within the range of 15° to 80°, the inventors have discovered that the contact area between the waste air and the total heat exchanger 32 can be increased as much as possible, allowing the waste air to pass through the small channels of the total heat exchanger 32 as much as possible. On the one hand, this can reduce the wind pressure at the total heat exchanger 32, thereby increasing the exhaust volume of the waste air. On the other hand, it can also increase the heat exchange efficiency between the fresh air and the waste air.

[0142] Wherein, a2 can be 15°, 20°, 30° or 80°, etc., as long as a2 is within the range of 15° to 80°, this embodiment does not limit it.

[0143] In some embodiments, see Figure 7 , Figure 10 and Figure 14The total heat exchanger 32 has a second windward surface 323 and a second leeward surface 324 arranged opposite to each other along the extension direction of the waste air duct 312. The waste air in the waste air volute 319 passes through the other end of the waste air volute 319. Figure 10 The air enters the total heat exchanger 32 from the left end of the central air vortex 319 and the second air-facing surface 323.

[0144] The housing 31 includes a first plate 31a that is spaced apart from the other end of the vortex neck 319, and a second plate 31b that is spaced apart from the second windward surface 323. A guide surface 31c is provided at the connection between the second plate 31b and the first plate 31a. The included angle between the guide surface 31c and the second windward surface 323 is β, where β ≥ 15° and β ≤ 60°.

[0145] The inventors discovered that when the angle β between the guide surface 31c and the second windward surface 323 is within the range of 15° to 60°, the guide surface 31c can effectively guide the flow of the polluted air, allowing the polluted air to flow into the total heat exchanger 32 with minimal energy loss when passing through the guide surface 31c. This can increase the exhaust volume of the polluted air and also improve the heat exchange efficiency of the total heat exchanger 32.

[0146] Wherein, β can be 15°, 20° or 60°, etc., as long as β is within the range of 15° to 60°, this embodiment does not limit it.

[0147] In some embodiments, see Figure 15 , Figure 15 yes Figure 9 A schematic diagram of the structure of the sewage fan 35. Along the axial direction of the sewage fan 35, the height of the sewage fan 35 is d, where d≥20mm and d≤35mm.

[0148] When the height d of the sludge fan 35 is greater than 35mm, the size of the sludge fan 35 will be too large, which in turn will make the size of the fresh air module 3 too large and not lightweight. When the height d of the sludge fan 35 is less than 20mm, the size of the sludge fan 35 will be too small, which will result in a small sludge exhaust volume. Therefore, when the height d of the sludge fan 35 is within the range of 20mm to 35mm, the sludge fan 35 can have a large sludge exhaust volume while keeping the overall size of the sludge fan 35 small.

[0149] Specifically, the height d of the wastewater fan 35 can be 20mm, 25mm or 35mm, etc., and this embodiment does not limit it.

[0150] In some embodiments, see Figure 15The waste air fan 35 includes a first turntable 351 and a plurality of first blades 352. The plurality of first blades 352 are arranged in an array on the surface of the first turntable 351 along the periphery of the first turntable 351. Each first blade 352 includes a distal end 3511 away from the center of the first turntable 351. Along the axial direction of the waste air fan 35, the distal end 3511 overlaps with the periphery of the first turntable 351, and the distal end 3511 is a free end.

[0151] By making the distal end 3511 of the first blade 352 overlap with the periphery of the first turntable 351, the effective diameter of the waste air fan 35 can be increased as much as possible while keeping the diameter of the first turntable 351 constant, thereby increasing the waste air exhaust volume of the waste air fan 35. Furthermore, by making the distal end 3511 a free end, no reinforcing ribs need to be designed on the distal end 3511, which further increases the effective diameter of the waste air fan 35, thereby increasing the waste air exhaust volume of the waste air fan 35.

[0152] To strengthen the first fan blade 352 and prevent it from falling off or breaking from the first turntable 351, in some embodiments, see [reference needed]. Figure 15 The connection between the first fan blade 352 and the first turntable 351 is provided with a rounded corner, the radius of which is R, R>0, R≤3mm.

[0153] By setting a rounded corner at the connection between the first blade 352 and the first turntable 351, and making the radius R of the rounded corner within the range of 0 to 3 mm, the inventors have found that the strength of the first blade 352 can be enhanced, thereby avoiding or reducing the occurrence of the first blade 352 falling off the first turntable 351 or breaking.

[0154] Specifically, R can be 1mm, 2mm or 3mm, etc., as long as R > 0 and R ≤ 3mm. This embodiment does not limit this.

[0155] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An air conditioner indoor unit (100), characterized by, include: An air conditioner housing (1) is provided with an air conditioner inlet (11) and an air conditioner outlet (12); Heat treatment module (2), the heat treatment module (2) is disposed inside the air conditioner housing (1), and is used to draw air outside the air conditioner housing (1) into the air conditioner housing (1) through the air conditioner inlet (11) for heat exchange, and blow the air after heat exchange out of the air conditioner housing (1) through the air conditioner outlet (12). A fresh air module (3), wherein the fresh air module (3) is disposed in the air conditioner housing (1), and includes: The housing (31) has a fresh air duct (311) and a waste air duct (312) formed inside it. The housing (31) is provided with a fresh air inlet (313) and a fresh air outlet (314) at both ends of the fresh air duct (311), and a waste air inlet (315) and a waste air outlet (316) at both ends of the waste air duct (312). The housing (31) includes: Fresh air volute (317), the first cavity (3171) of the fresh air volute (317) forms at least a portion of the fresh air duct (311); Fresh air volute (310), one end of which is disposed on the fresh air volute (317) and communicates with the first cavity (3171), and the other end of which is communicated with the fresh air outlet (314); The volute (318) of the volute (318) forms at least a portion of the volute (312); A sludge volute (319) is provided at one end of the sludge volute shell (318) and communicates with the second cavity (3181), and the other end of the sludge volute (319) is communicated with the sludge outlet (316). Fresh air fan (34), which is disposed in the first cavity (3171) and is used to draw fresh air from the outside into the first cavity (3171) and discharge it into the room; Sewage fan (35), the sewage fan (35) is disposed in the second cavity (3181) and is used to draw indoor sewage into the second cavity (3181) and discharge it to the outside; The sludge volute (318) is stacked on top of the fresh air volute (317) along the stacking direction, and the angle between the extension direction of the fresh air volute neck (310) and the extension direction of the sludge volute neck (319) is γ, where γ≥0° and γ≤10°. 2.The air conditioning indoor unit (100) of claim 1, characterized in that, Along the stacking direction, at least a portion of the periphery of the polluted air volute (318) is aligned with the periphery of the fresh air volute (317). 3.The indoor unit (100) of the air conditioner according to claim 1, characterized in that, The fresh air volute (317) includes: The first half-shell (3172) has a first opening (3172a) on the side away from the sludge volute (318) along the stacking direction, and the first opening (3172a) is connected to the fresh air inlet (313). The second half-shell (3173) is aligned with the side of the first half-shell (3172) opposite to the first opening (3172a) along the stacking direction, so that the second half-shell (3173) and the first half-shell (3172) form the first cavity (3171). The sludge volute (318) is disposed on the side of the second half-shell (3173) opposite to the first half-shell (3172) along the stacking direction, so that the sludge volute (318) and the second half-shell (3173) form the second cavity (3181). The sludge volute (318) has a second opening (318a) on the side opposite to the first half-shell (3172), and the second opening (318a) forms the sludge inlet (315). 4.The indoor unit (100) of the air conditioner according to claim 1, characterized by, The fresh air module (3) also includes: The drive unit (36) is connected to the rotation shaft (361) of the drive unit (36), and the fresh air fan (34) and the sludge fan (35) are both connected to the rotation shaft (361). The drive unit (36) is used to drive the fresh air fan (34) and the sludge fan (35) to rotate synchronously through the rotation shaft (361). 5.The air conditioner indoor unit (100) according to any one of claims 1-4, characterized in that, The housing (31) further includes: A fresh air volute tongue (3101) is connected between the fresh air volute neck (310) and the peripheral wall of the fresh air volute shell (317). The fresh air volute neck (310) has a first surrounding wall (3102) opposite to the fresh air volute tongue (3101). The minimum distance between the fresh air volute tongue (3101) and the first surrounding wall (3102) is D1. The volute tongue (3191) is connected between the volute neck (319) and the peripheral wall of the volute shell (318). The volute neck (319) has a second peripheral wall (3192) opposite to the volute tongue (3191). The minimum distance between the volute tongue (3191) and the second peripheral wall (3192) is D2. Where D1 > D2. 6.The indoor unit (100) of the air conditioner according to claim 5, characterized by, The fresh air module (3) also includes a total heat exchanger (32), which is located at the intersection of the fresh air duct (311) and the waste air duct (312). The total heat exchanger (32) has a first windward surface (321) and a first leeward surface (322) arranged opposite to each other along the extension direction of the fresh air duct (311). The other end of the fresh air volute (310) is opposite to the first windward surface (321). The fresh air in the fresh air volute (310) enters the total heat exchanger (32) sequentially through the other end of the fresh air volute (310) and the first windward surface (321). The fresh air volute (310) also has a third enclosure (3103) opposite to the first enclosure (3102), the angle between the third enclosure (3103) and the first windward surface (321) being a1, a1≥15°, a1≤80°, and / or, the polluted air volute (319) has a fourth enclosure (3193) opposite to the second enclosure (3192), the angle between the fourth enclosure (3193) and the first windward surface (321) being a2, a2≥15°, a2≤80°. 7.The indoor unit (100) of the air conditioner according to claim 6, characterized by, The total heat exchanger (32) has a second windward surface (323) and a second leeward surface (324) arranged opposite to each other along the extension direction of the waste air duct (312). The waste air in the waste air volute (319) enters the total heat exchanger (32) through the other end of the waste air volute (319) and the second windward surface (323). The housing (31) includes a first plate (31a) spaced apart from the other end of the vortex (319), and a second plate (31b) spaced apart from the second windward surface (323). A guide surface (31c) is provided at the connection between the second plate (31b) and the first plate (31a). The included angle between the guide surface (31c) and the second windward surface (323) is β, where β ≥ 15° and β ≤ 60°. 8.The air conditioner indoor unit (100) according to any one of claims 1-4, characterized in that, Along the axial direction of the sewage fan (35), the height of the sewage fan (35) is d, where d≥20mm and d≤35mm. 9.The air conditioner indoor unit (100) according to any one of claims 1-4, characterized in that, The wastewater fan (35) includes: The first turntable (351); and, Multiple first fan blades (352) are arranged in an array on the surface of the first turntable (351) along the periphery of the first turntable (351). Each first fan blade (352) includes a distal end (3511) away from the center of the first turntable (351). Along the axial direction of the waste air fan (35), the distal end (3511) overlaps with the periphery of the first turntable (351) and the distal end (3511) is a free end. 10.The air conditioner indoor unit (100) according to any one of claims 1-4, characterized in that, The distance between the periphery of the polluted air volute (318) and the periphery of the fresh air volute (317) along the radial direction of the polluted air volute (318) is L, where L≥0mm and L≤3mm.

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