CN216114363U

CN216114363U - Fresh air processing device and air conditioner indoor unit

Info

Publication number: CN216114363U
Application number: CN202122617271.XU
Authority: CN
Inventors: 单联瑜
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-03-22
Anticipated expiration: 2031-10-28

Abstract

The utility model provides a fresh air processing device and air conditioner indoor unit belongs to the air conditioner field. This new trend processing apparatus includes: the air inlet assembly comprises a first air inlet and a first air outlet which are oppositely arranged; the air outlet assembly comprises a second air inlet and a second air outlet which are oppositely arranged; the fan comprises a third air inlet and a third air outlet which are oppositely arranged, the third air inlet and the first air outlet are opposite in position and are mutually communicated, and the third air outlet and the second air inlet are opposite in position and are mutually communicated. The third air inlet of the fan is opposite to the first air outlet of the air inlet assembly and communicated with the first air outlet of the air outlet assembly, the third air outlet of the fan is opposite to the second air inlet of the air outlet assembly and communicated with the second air outlet of the air outlet assembly, when the fan works, air flow enters the fan along the first air outlet of the air inlet assembly, enters the air outlet assembly from the third air outlet of the fan and is blown out by the air outlet assembly, resistance of the air flow is small, flow loss of the air flow is reduced, and indoor fresh air volume entering is increased.

Description

Fresh air processing device and air conditioner indoor unit

Technical Field

The embodiment of the disclosure relates to the field of air conditioners, in particular to a fresh air processing device and an air conditioner indoor unit.

Background

Along with the development and progress of science and technology, fresh air processing device has been added to the air conditioner mostly, and fresh air processing device can follow outdoor new trend and constantly replace indoor air, keeps indoor air fresh and clean.

The air conditioner comprises a fresh air processing device and a heat exchange processing device, wherein the fresh air processing device is connected to one end of the heat exchange processing device. The fresh air processing device comprises a first shell, an air inlet pipe, a filtering module and a fan, wherein the air inlet pipe is positioned outside the first shell. One end of the filtering module is positioned outside the first shell, one end of the filtering module, which is positioned outside the first shell, is connected with the air inlet pipe, the other end of the filtering module is positioned in the first shell, and one end of the filtering module, which is positioned in the first shell, is connected with the fan. The fan is located the first casing to link to each other with first casing. After the fan is started, outdoor air enters the fresh air processing device from the air inlet pipe, is filtered and purified by the filtering module and then enters the room through the fan.

In the related art, when air flow enters the fresh air processing device from the outside, the air flow sequentially passes through the air inlet pipe, the filtering module and the fan, and finally enters the room, the air flow needs to be turned for multiple times, so that the resistance of the fresh air processing device to the air flow is large, and the fresh air volume entering the room is small.

SUMMERY OF THE UTILITY MODEL

The utility model provides a fresh air processing apparatus and air conditioner indoor unit can strengthen the fresh air volume of new trend module. The technical scheme at least comprises the following scheme:

in one aspect, an embodiment of the present disclosure provides a fresh air processing apparatus, including:

the air inlet assembly comprises a first air inlet and a first air outlet which are oppositely arranged;

the air outlet assembly comprises a second air inlet and a second air outlet which are oppositely arranged;

the fan comprises a third air inlet and a third air outlet which are oppositely arranged, the third air inlet and the first air outlet are opposite in position and are mutually communicated, and the third air outlet and the second air inlet are opposite in position and are mutually communicated.

Optionally, the air intake assembly includes:

the air inlet pipe comprises a first end and a second end which are arranged oppositely, the first end is formed into the first air inlet, the second end is formed into the first air outlet, the first end extends to the outside to communicate with the outdoor air, and the second end is connected with the third air inlet.

Optionally, the air intake assembly includes:

the air inlet pipe comprises a first end and a second end which are oppositely arranged, and the first end forms the first air inlet;

the filtering module comprises a filtering shell and a filtering piece arranged in the filtering shell, the filtering shell comprises a first opening and a second opening which are oppositely arranged, the first opening is connected with the second end of the air inlet pipe, and the second opening forms the first air outlet.

Optionally, the second housing includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall, the first sidewall, the second sidewall, the third sidewall, and the fourth sidewall form a cylinder, the first sidewall is opposite to the second sidewall, the third sidewall is opposite to the fourth sidewall, the inlet of the filter module is located on the fourth sidewall, and the filter element is connected to at least one of the first sidewall and the second sidewall.

Optionally, the second side wall has a strip-shaped hole, and the filter is inserted in the strip-shaped hole and contacts with the first side wall.

Optionally, the filter module further comprises a fresh air door, the fresh air door is located in the inlet of the filter module, and is movably connected with the second shell, so as to open or close the inlet of the filter module.

Optionally, the first side wall has an opening located on a side of the filter element adjacent to the fourth side wall;

the filtration module further comprises a purification air door which is movably connected with the first side wall and used for opening or closing the opening.

Optionally, the first side wall has a chute located at one side of the opening, and the purge damper is at least partially located in the chute and is slidable along the chute.

Optionally, the fan includes:

the fan shell is formed into a cylinder, and the two ends of the cylinder are respectively provided with the third air inlet and the third air outlet;

the first impeller is arranged in the fan shell and is close to the third air inlet;

the second impeller is arranged in the fan shell and is close to the third air outlet;

and the motor is arranged between the first impeller and the second impeller and is respectively connected with the first impeller and the second impeller so as to drive the first impeller and the second impeller to rotate.

Optionally, the fresh air processing device further comprises a first housing, and the first housing comprises a first mounting opening and a second mounting opening which are arranged oppositely;

the air inlet assembly is fixedly connected to the first mounting port;

the air outlet assembly is fixedly connected to the second mounting opening.

Optionally, the fresh air processing device further comprises a baffle, the baffle is provided with a plurality of through holes, and the baffle is located at the second air outlet of the air outlet assembly and connected with the first shell.

On the other hand, the embodiment of the present disclosure further provides an air conditioner indoor unit, including any one of the fresh air processing devices described in the foregoing aspect.

Optionally, the air conditioner indoor unit is vertical, the air conditioner indoor unit further comprises a circulating air processing device, and the fresh air processing device is arranged at the bottom of the circulating air processing device.

The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:

the third air inlet of the fan is opposite to the first air outlet of the air inlet component and is communicated with the first air outlet of the air outlet component, the third air outlet of the fan is opposite to the second air inlet of the air outlet component and is communicated with the second air inlet of the air outlet component, when the fan works, air flow can enter the third air inlet of the fan along the first air inlet of the air inlet component, the air flow passes through the fan, then enters the air outlet component from the third air outlet of the fan, finally, the air flow is blown out from the second air outlet of the air outlet component, the resistance of the air flow when the air flow flows inside the fresh air processing device is small, the flow loss of the air flow is reduced, and the amount of fresh air entering the room is increased.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a fresh air processing device according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a fresh air processing device according to an embodiment of the present disclosure;

fig. 3 is a schematic cross-sectional view of a fresh air processing device according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural view of a filter element provided in accordance with an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a fresh air processing device according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a part of a fresh air processing device according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a part of a fresh air processing device according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present disclosure.

Detailed Description

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," "third," and similar terms in the description and claims of the present disclosure are not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a fresh air processing device according to an embodiment of the present disclosure. As shown in fig. 1, the fresh air processing device includes an air inlet assembly 10, an air outlet assembly 20 and a fan 30.

As shown in fig. 1, the air intake assembly 10 includes a first air intake opening 10a and a first air outlet opening 10b, the air outlet assembly 20 includes a second air intake opening 20a and a second air outlet opening 20b, and the blower 30 includes a third air intake opening 30a and a third air outlet opening 30 b. The third air inlet 30a and the first air outlet 10b are opposite and communicated with each other, and the third air outlet 30b and the second air inlet 20a are opposite and communicated with each other.

As shown in fig. 1, the air intake assembly 10 includes an air intake duct 11. The air inlet duct 11 includes a first end 111 and a second end 112 opposite to each other, the first end 111 forms a first air inlet 10a, the second end 112 forms a first air outlet 10b, the first end 111 extends to the outside to communicate with the outside air, and the second end 112 is connected to the third air inlet 30 a.

The air inlet pipe 11 is communicated with the outside so as to conveniently guide outdoor air into the fresh air processing device. Illustratively, the air inlet duct 11 is cylindrical.

As shown in fig. 1, in the embodiment of the present disclosure, the air intake pipe 11 includes a first-stage communicating pipe 11a, a second-stage communicating pipe 11b, and a third-stage communicating pipe 11 c. The first-stage communication pipe 11a is communicated with the outdoor, the third-stage communication pipe 11c is connected to the third air inlet 30a of the fan 30, and the second-stage communication pipe 11b is connected between the first-stage communication pipe 11a and the third-stage communication pipe 11c, so that the outdoor air enters the fan 30 through the first-stage communication pipe 11a, the second-stage communication pipe 11b and the third-stage communication pipe 11 c. The second section of communicating pipe 11b is trumpet-shaped, and the end with the larger diameter is connected with the third section of communicating pipe 11c, which is beneficial to reducing the resistance of outdoor air flowing in the air inlet pipe 11 and reducing the loss of air flow.

Fig. 2 is a schematic structural diagram of a fresh air processing device according to an embodiment of the present disclosure. As shown in fig. 2, in the fresh air processing device, the air intake assembly 10 includes an air intake pipe 11 and a filter module 12. The air inlet duct 11 includes a first end 111 and a second end 112 opposite to each other, and the first end 111 forms a first air inlet opening 10 a. The filter module 12 includes a filter housing 121 and a filter member 122 disposed in the filter housing 121, the filter housing 121 includes a first opening 121a and a second opening 121b disposed opposite to each other, the first opening 121a is connected to the second end 112 of the air inlet duct 11, and the second opening 121b forms a first air outlet 10 b.

As shown in fig. 2, the filter module 12 of the fresh air treatment device includes a filter housing 121 and a filter member 122. The first opening 121a of the filter module 12 is located in one of the two opposite side walls of the filter housing 121, the second opening 121b of the filter module 12 is located in the other of the two opposite side walls of the filter housing 121, the first opening 121a and the second opening 121b are opposite, and the filter member 122 is located in the filter housing 121 between the first opening 121a of the filter module 12 and the second opening 121b of the filter module 12.

The air inlet duct 11 is connected to the first opening 121a of the filter module 12, the blower 30 is connected to the second opening 121b of the filter module 12, and the filter 122 is located between the first opening 121a of the filter module 12 and the second opening 121b of the filter module 12, and is connected to the filter housing 121, so as to filter the air drawn into the filter module 12.

Fig. 3 is a schematic structural view of a filter element provided in an embodiment of the present disclosure. As shown in fig. 3, the filter member 122 includes a bracket 1221 and a filter net 1222. The filter net 1222 is connected to the bracket 1221, and the bracket 1221 is detachably connected to the filter housing 121. The filter 122 can filter air entering from the air inlet duct 11.

Fig. 4 is a schematic structural diagram of a fresh air processing device according to an embodiment of the present disclosure. As shown in fig. 4, the filter housing 121 of the filter module 12 of the fresh air processing device includes a first sidewall 1211, a second sidewall 1212, a third sidewall 1213, and a fourth sidewall 1214. The first, second, third and

fourth sidewalls

1211, 1212, 1213, 1214 define a cylindrical shape with the first sidewall 1211 opposite the second sidewall 1212 and the third sidewall 1213 opposite the fourth sidewall 1214, the first opening 121a of the filter module 12 is located in the fourth sidewall 1214, and the filter element 122 is attached to at least one of the first and

second sidewalls

1211, 1212.

As shown in fig. 4, the filter housing 121 encloses a cavity, and the filter element 122 is located between the third side wall 1213 and the fourth side wall 1214, dividing the cavity into two portions. The air inlet duct 11 is connected to the fourth side wall 1214, the fan 30 is connected to the third side wall 1213, and the air inlet duct 11 and the fan 30 are separated by the filter 122 so that the air introduced into the fan 30 is filtered.

The filter housing 121 further includes at least top and bottom walls at both ends of the cylindrical space enclosed by the first, second, third and

fourth side walls

1211, 1212, 1213, 1214, which are removed in fig. 4 for facilitating the temporary filter elements 122.

In some examples, the filter element 122 may be coupled to one of the first sidewall 1211 and the second sidewall 1212 to facilitate removal and installation of the filter element 122 during removal for cleaning, and in other examples, the filter element 122 may be coupled to both the first sidewall 1211 and the second sidewall 1212 to provide a more secure attachment.

As shown in fig. 4, the second sidewall 1212 has a strip hole 1215. The filter member 122 is inserted in the bar hole 1215 and contacts the first sidewall 1211.

By providing a strip aperture 1215 in the second sidewall 1212 adjacent to the surface of the filter pack 122, the filter pack 122 is inserted through the strip aperture 1215 such that the filter pack 122 is connected to the second sidewall 1212. And the filter elements 122 contact the first sidewall 1211 to space the third and

fourth sidewalls

1213, 1214 to filter the air within the filter module 12. When the filter member 122 needs to be detached, the filter member 122 only needs to be pulled out of the filter housing 121 from the strip hole 1215, so that the detachment and installation are more convenient.

For example, the third side wall 1213 is in a trumpet shape, which can collect the airflow and reduce the resistance of the airflow entering the fan 30 from the filter module 12, so that the airflow can enter the fan 30 from the filter module 12 after being collected, and the air volume entering the fan 30 is increased.

Fig. 5 is a schematic structural diagram of a fresh air processing device according to an embodiment of the present disclosure. As shown in fig. 5, the filter module 12 of the fresh air processing device further includes a fresh air damper 123. The fresh air damper 123 is located in the first opening 121a of the filter module 12 and is movably connected to the filter housing 121. The fresh air damper 123 is used to open or close the first opening 121a of the filter module 12. In the operation of the fresh air processing device, when outdoor air is sucked, the fresh air damper 123 is in an open state, so that the first opening 121a of the filter module 12 is opened.

Fig. 6 is a schematic structural diagram of a part of a fresh air processing device according to an embodiment of the present disclosure. As shown in fig. 6, the fresh air damper 123 includes a door panel 1231 and a connecting rod 1232. The connecting rod 1232 extends outward relative to the edge of the door panel 1231, and the door panel 1231 is pivotally connected to the fourth sidewall 1214 through the connecting rod 1232, so that the door panel 1231 can rotate around the connecting rod 1232 to open and close the first opening 121a of the filter module 12.

Illustratively, the door panel 1231 has a coupling hole 1233. The connection hole 1233 is located on the sidewall of the door plate 1231, the connection rod 1232 is located in the connection hole 1233, and both ends of the connection rod 1232 respectively extend out of the connection hole 1233 to be connected with the fourth sidewall 1214.

When the fresh air door 123 rotates to be coplanar with the fourth side wall 1214, the first opening 121a is shielded by the fresh air door 123, the fresh air door 123 is in a closed state, and at this time, the first opening 121a is closed. When the fresh air door 123 rotates to form an included angle with the fourth side wall 1214, the fresh air door 123 is in an open state, the first opening 121a is open, and outdoor air can enter the filter module 12 through the first opening 121a to be filtered. When new trend air door 123 rotated to be 90 contained angles with fourth lateral wall 1214, new trend air door 123 was in the biggest open mode, and first opening 121a opens completely, through rotating new trend air door 123, adjusts the contained angle size between new trend air door 123 and the fourth lateral wall 1214, can change the open degree of first opening 121 a.

As shown in fig. 5, the first sidewall 1211 has an opening 1216, the opening 1216 being located on a side of the filter pack 122 adjacent to the fourth sidewall 1214. The filter module 12 of the fresh air processing device further includes a purge air door 124, and the purge air door 124 is movably connected to the first sidewall 1211. The purge damper 124 is used to open or close the opening 1216.

The opening 1216 can also be used as an inlet for air to the fresh air handling device, and the opening 1216 can be controlled to be opened or closed by adjusting the position of the purge damper 124. When the fresh air treatment device is installed, the opening 1216 is located indoors. When the first opening 121a of the filter module 12 is closed, the air purifying door 124 is adjusted to open the opening 1216, so that the indoor air can enter the fresh air processing device through the opening 1216, sequentially pass through the filter module 12 and the fan 30, and finally be discharged back to the indoor space through the second air outlet 20b of the air outlet assembly 20. Indoor air continuously enters the fresh air processing device through the opening 1216, and the process is repeated, so that the purification cycle of the indoor air is realized.

Fig. 7 is a schematic structural diagram of a part of a fresh air processing device according to an embodiment of the present disclosure. As shown in fig. 7, the first sidewall 1211 has a slot 1217, the slot 1217 being located on one side of the opening 1216. The purge damper 124 is at least partially positioned in the chute 1217, and the purge damper 124 is slidable along the chute 1217. By providing the chute 1217 in the first sidewall 1211 to movably connect the purge damper 124 to the first sidewall 1211, the opening 1216 can be controlled to be opened or closed by adjusting the position of the purge damper 124.

When the purge damper 124 moves into the opening 1216, the purge damper 124 can block the opening 1216, and at this time, the purge damper 124 is in a closed state and the opening 1216 is closed. When the purge damper 124 is partially positioned in the opening 1216, the purge damper 124 is in an open state, the opening 1216 is open, and room air can enter the filter module 12 through the opening 1216 for a purge cycle.

When the fresh air door 123 is in an open state and the purification air door 124 is in a closed state, outdoor fresh air enters the fresh air processing device through the air inlet pipe 11 in the working process of the fresh air processing device, sequentially passes through the filtering module 12 and the fan 30, and finally is discharged into the room through the second air outlet 20b of the air outlet assembly 20, so that the outdoor air is sent into the room. When fresh air door 123 is in the closed state, when purification air door 124 is in the open state, in the fresh air processing apparatus working process, the room air passes through opening 1216 and gets into fresh air processing apparatus, passes through filtration module 12 and fan 30 in proper order, and the second air outlet 20b by air-out subassembly 20 is arranged back to indoor again, realizes the purification cycle of room air.

As shown in fig. 2, the fan 30 of the fresh air processing device includes a fan housing 31, a first impeller 32, a second impeller 33, and a motor 34. The fan housing 31 is formed in a cylindrical shape, and the third air inlet 30a and the third air outlet 30b are formed at both ends of the cylindrical shape. The first impeller 32 is disposed in the fan housing 31 and is disposed near the third air inlet 30 a. The second impeller 33 is disposed in the fan housing 31 and near the third air outlet 30 b. The motor 34 is disposed between the first impeller 32 and the second impeller 33, and is connected to the first impeller 32 and the second impeller 33 respectively to drive the first impeller 32 and the second impeller 33 to rotate.

The fan housing 31 is connected to the filter module 12, the first impeller 32 is located at an end of the motor 34 close to the filter module 12, the second impeller 33 is located at an end of the motor 34 far from the filter module 12, and the first impeller 32 and the second impeller 33 are respectively connected to the motor 34. The motor 34 is capable of powering the rotation of the first impeller 32 and the second impeller 33. As the motor 34 rotates, the first impeller 32 applies work to the air in the fan housing 31, reducing the air pressure in the fan housing 31 and allowing air to enter the fan 30. The second impeller 33 is capable of sending air out of the fan 30. The motor 34 is coaxially arranged with the first impeller 32 and the second impeller 33, which is beneficial to reducing the resistance of air passing through the fan 30, reducing the loss of air volume and improving the air volume.

As shown in fig. 2, the fresh air processing device further includes a first housing 40, and the first housing 40 includes a first mounting opening 41 and a second mounting opening 42 which are oppositely disposed. The air inlet assembly 10 is fixedly connected to the first mounting opening 41, and the air outlet assembly 20 is fixedly connected to the second mounting opening 42.

Illustratively, the first housing 40 is cylindrical, the first mounting opening 41 and the second mounting opening 42 are located on a side wall of the first housing 40, and the first mounting opening 41 and the second mounting opening 42 are oppositely disposed. The side of the filter module 12 where the first opening 121a is located protrudes relative to the first air inlet 10 a.

As shown in fig. 1, the fresh air processing device further includes a baffle 50. The baffle 50 has a plurality of through holes 51, and the baffle 50 is located at the second air outlet 20b of the air outlet assembly 20 and connected to the first housing 40.

The air flows out of the fan 30 and flows into the room through the second outlet 20b of the outlet assembly 20. Set up baffle 50 in the second air outlet 20b of air-out subassembly 20, a plurality of through-holes 51 on baffle 50 can make the air current softer, can reduce the noise that air outlet 11 produced moreover, realize making an uproar purpose fall.

Fig. 8 is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present disclosure. As shown in fig. 8, the indoor unit of the air conditioner includes a fresh air processing device 100. The fresh air processing device 100 can send outdoor air into the room through the air inlet pipe 20, the filter module 12 and the fan 40, so that the indoor air is continuously updated, the fresh air supply quantity of the air conditioning processing system is effectively increased, the indoor air can be purified and circulated, and the air quality is improved.

As shown in fig. 8, the air conditioner is of a vertical type, and further includes a circulating air processing device 200, and the fresh air processing device 100 is disposed at the bottom of the circulating air processing device 200. The circulated air processing device 200 can adjust the temperature of the air in the room. When the fresh air processing device 100 is placed, the end portion far from the circulating air processing device 200 can be used as a supporting surface and placed on the ground or the like.

The above description is meant to be illustrative of alternative embodiments of the disclosure and not to limit the disclosure, and any modification, equivalent switch, improvement, etc. made within the spirit and principles of the disclosure should be included within the scope of the disclosure.

Claims

1. A fresh air processing device, comprising:

the air inlet assembly (10) comprises a first air inlet (10a) and a first air outlet (10b) which are oppositely arranged;

the air outlet assembly (20) comprises a second air inlet (20a) and a second air outlet (20b) which are oppositely arranged;

the fan (30) comprises a third air inlet (30a) and a third air outlet (30b) which are oppositely arranged, the third air inlet (30a) and the first air outlet (10b) are opposite in position and are mutually communicated, and the third air outlet (30b) and the second air inlet (20a) are opposite in position and are mutually communicated.

2. Fresh air handling device according to claim 1, wherein the air intake assembly (10) comprises:

the air inlet pipe (11) comprises a first end (111) and a second end (112) which are oppositely arranged, the first end (111) forms the first air inlet (10a), the second end (112) forms the first air outlet (10b), the first end (111) extends to the outdoor to be communicated with outdoor air, and the second end (112) is connected with the third air inlet (30 a).

3. Fresh air handling device according to claim 1, wherein the air intake assembly (10) comprises:

the air inlet pipe (11) comprises a first end (111) and a second end (112) which are arranged oppositely, and the first end (111) forms the first air inlet (10 a);

a filter module (12) comprising a filter housing (121) and a filter element (122) disposed in the filter housing (121), the filter housing (121) comprising a first opening (121a) and a second opening (121b) disposed opposite each other, the first opening (121a) being connected to the second end (112) of the air inlet duct (11), the second opening (121b) forming the first air outlet (10 b).

4. Fresh air handling device according to claim 3, characterized in that the filter housing (121) comprises a first side wall (1211), a second side wall (1212), a third side wall (1213) and a fourth side wall (1214), the first side wall (1211), the second side wall (1212), the third side wall (1213) and the fourth side wall (1214) enclosing a cylinder, and the first side wall (1211) is opposite to the second side wall (1212), the third side wall (1213) is opposite to the fourth side wall (1214), the first opening (121a) of the filter module (12) is located on the fourth side wall (1214), and the filter element (122) is connected to at least one of the first side wall (1211) and the second side wall (1212).

5. Fresh air handling device according to claim 4, characterised in that the second side wall (1212) has a strip-shaped hole (1215), the filter element (122) being inserted in the strip-shaped hole (1215) and being in contact with the first side wall (1211).

6. The fresh air treatment device according to claim 4, characterized in that the first side wall (1211) has an opening (1216), the opening (1216) being located on a side of the filter element (122) adjacent to the fourth side wall (1214);

the filter module (12) further comprises a purge damper (124), the purge damper (124) being movably connected to the first side wall (1211) for opening or closing the opening (1216).

7. The fresh air handling device according to claim 6, wherein the first side wall (1211) has a chute (1217), the chute (1217) being located on one side of the opening (1216), and the purge damper (124) being at least partially located in the chute (1217) and being slidable along the chute (1217).

8. Fresh air handling device according to any of claims 3 to 7, wherein the filter module (12) further comprises a fresh air damper (123), the fresh air damper (123) being located in the first opening (121a) of the filter module (12) and being movably connected to the filter housing (121) for opening or closing an inlet of the filter module (12).

9. Fresh air handling device according to any of claims 1 to 7, wherein the fan (30) comprises:

a fan housing (31) formed in a cylindrical shape, both ends of the cylindrical shape being the third air inlet (30a) and the third air outlet (30b), respectively;

a first impeller (32) disposed in the fan case (31) and disposed close to the third air inlet (30 a);

a second impeller (33) disposed in the fan housing (31) and disposed adjacent to the third air outlet (30 b);

and the motor (34) is arranged between the first impeller (32) and the second impeller (33) and is respectively connected with the first impeller (32) and the second impeller (33) so as to drive the first impeller (32) and the second impeller (33) to rotate.

10. The fresh air processing device according to any one of claims 1 to 7, further comprising a first housing (40), wherein the first housing (40) comprises a first mounting opening (41) and a second mounting opening (42) which are oppositely arranged;

the air inlet assembly (10) is fixedly connected to the first mounting opening (41);

the air outlet assembly (20) is fixedly connected to the second mounting opening (42).

11. The fresh air processing device according to claim 10, further comprising a baffle (50), wherein the baffle (50) has a plurality of through holes (51), and the baffle (50) is located at the second air outlet (20b) of the air outlet assembly (20) and connected to the first casing (40).

12. An indoor unit of an air conditioner, characterized by comprising a fresh air processing device (100) according to any one of claims 1 to 11.

13. The indoor unit of claim 12, wherein the indoor unit is of a vertical type, the indoor unit further comprises a circulating air processing device (200), and the fresh air processing device (100) is arranged at the bottom of the circulating air processing device (200).