CN220567361U

CN220567361U - Fresh air device, air conditioner indoor unit and air conditioner

Info

Publication number: CN220567361U
Application number: CN202322107274.8U
Authority: CN
Inventors: 胡瑾; 肖桥; 林健辉; 党南南; 暨文伟
Original assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2023-08-04
Filing date: 2023-08-04
Publication date: 2024-03-08
Anticipated expiration: 2033-08-04

Abstract

The utility model discloses a fresh air device, an air conditioner indoor unit and an air conditioner, wherein the fresh air device comprises a volute and a flow guiding piece; the volute is provided with a fresh air duct, a first air outlet and a second air outlet which are communicated with the fresh air duct, and the first air outlet and the second air outlet are adjacently arranged; the flow guiding piece is arranged in the fresh air duct and is close to at least one of the first air outlet and the second air outlet, and the flow guiding piece is movably connected to the volute and is used for changing the opening degree of at least one of the first air outlet and the second air outlet so as to change the ratio of the air output of the first air outlet to the air output of the second air outlet. The technical scheme of the utility model aims at avoiding the condition that a large amount of fresh air is directly blown to a person and improving the use experience of a user by arranging two air outlets and changing the proportion of the air output of the two air outlets by utilizing the flow guide piece.

Description

Fresh air device, air conditioner indoor unit and air conditioner

Technical Field

The utility model relates to the technical field of air conditioning, in particular to a fresh air device, an air conditioner indoor unit and an air conditioner.

Background

Along with the improvement of living standard, the multifunctional requirements of consumers on the air conditioner are gradually increased. For example, air conditioners with fresh air ventilation function are increasingly popular with consumers. In the related art, the fresh air device carried by the air conditioner generally adopts a single air outlet, and in order to ensure ventilation efficiency, the single air outlet is arranged on the front side of the air conditioner, however, the condition of direct blowing of people inevitably occurs in the air outlet mode, when the ventilation efficiency needs to be improved, the air outlet efficiency can be increased only through the mode of improving the rotating speed of the wind wheel, the wind speed of fresh air conveyed by the single air outlet is overlarge, so that users generate uncomfortable feeling, and the use experience of the users is reduced.

Disclosure of Invention

The utility model mainly aims to provide a fresh air device, which aims to improve the use experience of a user by arranging two air outlets and changing the proportion of the air output of the two air outlets by utilizing a flow guide piece, so that the condition that a large amount of fresh air is blown directly to a person is avoided.

In order to achieve the above object, the fresh air device provided by the present utility model includes:

the volute is provided with a fresh air duct and a first air outlet and a second air outlet which are communicated with the fresh air duct, and the first air outlet and the second air outlet are adjacently arranged; and

the flow guiding piece is arranged in the fresh air duct and is close to at least one of the first air outlet and the second air outlet, and the flow guiding piece is movably connected to the volute and is used for changing the opening degree of at least one of the first air outlet and the second air outlet so as to change the ratio of the air output of the first air outlet to the air output of the second air outlet.

Optionally, a first guiding wall is disposed on a side of the first air outlet adjacent to the second air outlet, and the guiding piece is connected to the first guiding wall and disposed opposite to the second air outlet, so as to change the opening of the second air outlet.

Optionally, the extending direction of the flow guiding piece is parallel to the first flow guiding wall and can slide relative to the first flow guiding wall in the self extending direction;

and/or, a second guide wall is arranged on one side of the second air outlet adjacent to the first air outlet, and the first guide wall and the second guide wall are intersected in an included angle.

Optionally, the fresh air device further comprises a driving motor, and the driving motor is in driving connection with the flow guiding piece.

Optionally, the driving motor is used for driving the flow guiding piece to reciprocate so as to make the opening degree of at least one of the first air outlet and the second air outlet reciprocally change.

Optionally, the fresh air device further comprises a gear and a rack, wherein the gear is fixedly connected to an output shaft of the driving motor, and the rack is connected with the guide piece and meshed with the gear.

Optionally, the lateral wall in new trend wind channel is provided with the direction straight flute, the extending direction in direction straight flute is parallel to the slip direction of water conservancy diversion spare, driving motor locates outside the new trend wind channel, the rack is equipped with the connecting rod, the connecting rod activity wears to establish the direction straight flute and with the water conservancy diversion spare is connected.

Optionally, the fresh air device further comprises a cover plate, the cover plate is covered on the outer side wall of the fresh air duct, the gear and the rack are movably clamped between the cover plate and the outer side wall of the fresh air duct, and an output shaft of the driving motor penetrates through the cover plate and is connected with the gear.

Optionally, the outer side wall of the fresh air duct is provided with a chute, the extending direction of the chute is parallel to the sliding direction of the flow guiding piece, the rack is convexly provided with a sliding convex part, and the sliding convex part is slidably inserted into the chute.

Optionally, the volute includes a body portion and a diffuser, and the first air outlet and the second air outlet intersect the diffuser at an included angle.

The utility model also provides an air conditioner indoor unit, which comprises the fresh air device.

The utility model also provides an air conditioner which comprises the fresh air device.

According to the technical scheme, the first air outlet and the second air outlet are formed in the volute, one of the first air outlet and the second air outlet is arranged forwards, the other one of the first air outlet and the second air outlet is arranged upwards or downwards, if the flow guide piece moves, the opening degree of any one of the first air outlet and the second air outlet, namely the ratio of the opening degree of the first air outlet to the opening degree of the second air outlet, is changed, so that the ratio of the respective air outlet amounts of the first air outlet and the second air outlet is also changed. So, the air outlet ratio of first air outlet and second air outlet can be changed to the water conservancy diversion spare, and the water conservancy diversion spare is with new trend water conservancy diversion to the air outlet that sets up or down to avoid the air outlet that directly blows out the air outlet forward too big, make the user produce uncomfortable and feel, thereby promote user's use experience.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a fresh air device according to an embodiment of the present utility model;

FIG. 2 is an exploded view of the fresh air device of the present utility model;

FIG. 3 is a schematic view of the rack and deflector fitting of FIG. 2;

FIG. 4 is a schematic cross-sectional view of the fresh air device of the present utility model in a first state;

FIG. 5 is a left side view of the fresh air device without the drive motor and the cover plate in the state of FIG. 4;

FIG. 6 is a schematic cross-sectional view of the fresh air device of the present utility model in another state;

fig. 7 is a left side view of the fresh air device without the driving motor and the cover plate in the state of fig. 6.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a fresh air device.

In an embodiment of the present utility model, referring to fig. 1 to 7, the fresh air device includes:

the volute 100, the volute 100 is provided with a fresh air duct 150, a first air outlet 130 and a second air outlet 140 which are communicated with the fresh air duct 150, and the first air outlet 130 and the second air outlet 140 are adjacently arranged; and

the flow guiding piece 200 is disposed near at least one of the first air outlet 130 and the second air outlet 140, and the flow guiding piece 200 is movably connected to the volute 100 for changing the opening degree of at least one of the first air outlet 130 and the second air outlet 140, thereby changing the ratio of the air output of the first air outlet 130 to the air output of the second air outlet 140.

According to the technical scheme, the first air outlet 130 and the second air outlet 140 are arranged on the volute 100, one of the first air outlet 130 and the second air outlet 140 is arranged forwards, and the other one is arranged upwards or downwards, wherein if the flow guide piece 200 moves, the opening degree of any one of the first air outlet 130 and the second air outlet 140 can be changed, namely the ratio of the opening degree of the first air outlet 130 to the opening degree of the second air outlet 140 is changed, so that the respective air quantity of the first air outlet 130 and the second air outlet 140 is also changed, and the ratio of the respective air quantity of the first air outlet 130 and the second air outlet 140 is also changed. In this way, the air guiding piece 200 can change the ratio of the air output of the first air outlet 130 to the air output of the second air outlet 140, and the air guiding piece 200 guides the fresh air to the air outlet arranged upwards or downwards, so as to avoid overlarge air output of the forward straight air outlet, and enable a user to feel uncomfortable, thereby improving the use experience of the user.

The adjusting manner of the flow guiding member 200 may be that the opening degree of one of the first air outlet 130 and the second air outlet 140 is changed, the opening degree of the other is unchanged, the ratio of the opening degree of the first air outlet 130 to the opening degree of the second air outlet 140 is changed, specifically, if the opening degree of one air outlet is reduced, the air outlet volume of the air outlet is reduced, and if the opening degree of the other air outlet is increased, the opening degree of one air outlet is increased, the air outlet volume of the air outlet is increased, and the air outlet volume of the other air outlet is reduced; the opening degrees of the first air outlet 130 and the second air outlet 140 may be changed in unequal proportion at the same time, so that the proportion of the opening degree of the first air outlet 130 to the opening degree of the second air outlet 140 is changed, for example, the opening degree of one air outlet is increased, the opening degree of the other air outlet is decreased, or the opening degrees of the two air outlets are increased or decreased at the same time, but the change rates of the two air outlets are different, so that the proportion of the opening degrees of the two air outlets is changed.

It should be noted that, the flow guiding element 200 may move in the volute 100 in a manner of rotating or sliding, and the moving direction thereof forms an included angle with the air outlet direction of any one of the first air outlet 130 and the second air outlet 140, or if the diameter of the fresh air duct 150 is gradually changed in the direction close to the first air outlet 130 and the second air outlet 140, the flow guiding element 200 may move in the air outlet direction of the first air outlet 130 or the second air outlet 140, so as to ensure that the flow guiding element 200 may effectively adjust the ratio of the air outlet volumes of the two air outlets. In addition, the flow guiding member 200 may be configured as a grid structure, a plate structure, a comb structure, or the like, so as to be capable of intercepting and guiding the fresh air in the air outlet direction having an included angle with the plane in which the flow guiding member is located.

In an embodiment, referring to fig. 1 to 7, the volute 100 includes a main body 110 and a diffuser 120, and the first air outlet 130 and the second air outlet 140 intersect the diffuser 120 at an angle. It should be noted that, the body portion 110 is located to the wind wheel, the diffuser 120 is located the air-out side of wind wheel, the internal diameter of diffuser 120 increases gradually from the direction of keeping away from body portion 110, fresh air wind channel 150 in the diffuser 120 is the contained angle with fresh air wind channel 150 in body portion 110, when fresh air gets into fresh air wind channel 150 in the diffuser 120, the kinetic energy of fresh air reduces, static pressure increases, the amount of wind will increase, so, fresh air keeps stable amount of wind from diffuser 120 to input indoor from first air outlet 130 and second air outlet 140, thereby ensure that the air-out volume of first air outlet 130 and second air outlet 140 satisfies the requirement of changing wind. Specifically, in the present embodiment, the first air outlet 130 is disposed at the end portion of the diffuser pipe 120 far away from the body 110, the second air outlet 140 is disposed at the side wall of the diffuser pipe 120, and the air outlet direction of the second air outlet 140 is opposite to the air outlet direction of the wind wheel, and the second air outlet 140 outputs most of the fresh air in the fresh air duct 150, where the air guide member 200 adjusts the opening degree of the second air outlet 140, so that the ratio between the air outlet amounts of the first air outlet 130 and the second air outlet 140 can be quickly changed, thereby improving the adjustment sensitivity of the air guide member 200.

In an embodiment, referring to fig. 1 to 7, a first guiding wall 160 is disposed at a side of the first air outlet 130 adjacent to the second air outlet 140, and the guiding element 200 is connected to the first guiding wall 160 and disposed opposite to the second air outlet 140 for changing the opening of the second air outlet 140. In this way, the first guide wall 160 can provide support for the guide member 200 to stably resist the wind pressure of the fresh air, so that the guide member 200 can effectively adjust the opening of the second air outlet 140, and in addition, the first guide wall 160 can also shunt the fresh air in advance, so as to avoid the vortex phenomenon generated between the first air outlet 130 and the second air outlet 140 and influence the air outlet. It should be noted that, in this embodiment, the flow guiding element 200 and the first flow guiding wall 160 may be arranged in a staggered manner, and opposite sides between the flow guiding element 200 and the first flow guiding wall 160 may be slidably abutted, or alternatively, the flow guiding element 200 is movably inserted into the first flow guiding wall 160, and the flow guiding element 200 fills a movable cavity in the first flow guiding wall 160 and is movable relative to the first flow guiding wall 160, so that the flow guiding element 200 and the first flow guiding wall 160 are in a continuous and gapless connection state, thereby preventing fresh air from being blocked when flowing between the first flow guiding wall 160 and the flow guiding element 200, reducing wind noise, and guaranteeing the flow velocity of fresh air. Of course, in other embodiments, the second air outlet 140 is provided with a second guiding wall 170 adjacent to the first air outlet 130, and the guiding element 200 is connected to the second guiding wall 170 and disposed opposite to the first air outlet 130 for changing the opening of the first air outlet 130.

Further, in the present embodiment, please continue to refer to fig. 1 to 7, the extending direction of the guiding element 200 is parallel to the first guiding wall 160, and can slide relative to the first guiding wall 160 in the extending direction. It can be appreciated that the extending direction of the first air guiding wall 160 and the air outlet direction of the second air outlet 140 form an included angle, and the air guiding member 200 is equivalent to adjusting the extending length of the first air guiding wall 160 to adjust the opening degree of the second air outlet 140, thereby changing the air outlet ratio of the first air outlet 130 to the second air outlet 140, so that the air guiding member 200 can effectively adjust the opening degree of the second air outlet 140, thereby ensuring the stability of the air guiding member 200 in adjusting the air outlet ratio of the first air outlet 130 to the second air outlet 140. In addition, the first guide wall 160 and the guide member 200 are connected without a gap, so that the flow of fresh air is prevented from being blocked, and of course, in other embodiments, the guide member 200 rotates around the end surface of the first guide wall 160 to adjust the opening of the second air outlet 140.

Specifically, in the present embodiment, referring to fig. 1 to 7, the first guide wall 160 and the second guide wall 170 intersect at an included angle. It can be appreciated that the second air outlet 140 forms an included angle with the air outlet direction of the first air outlet 130, and the first guide wall 160 and the second guide wall 170 form an included angle to intersect, so that the fresh air is split at the intersection of the first guide wall 160 and the second guide wall 170, and the vortex is prevented from being formed between the first air outlet 130 and the second air outlet 140 to affect the fresh air outlet. Without loss of generality, in the present embodiment, the flow guiding element 200 is disposed at the intersection of the first flow guiding wall 160 and the second flow guiding wall 170, and slides in parallel relative to the first flow guiding wall 160.

In an embodiment, referring to fig. 1 to 7, the fresh air device further includes a driving motor 300, and the driving motor 300 is in driving connection with the air guiding member 200. In this way, the driving motor 300 drives the air guiding element 200 to move, so as to realize automatic control on the air guiding element 200, thereby improving the use experience of a user, in other embodiments, the fresh air device is externally provided with a manual adjusting structure, the manual adjusting structure is connected with the air guiding element 200, and the user can manually drive the air guiding element 200 to move so as to adjust the opening degree of the first air outlet 130 or the second air outlet 140, or, in another embodiment, the fresh air device is provided with an air cylinder, and the air cylinder is in driving connection with the air guiding element 200.

Further, in the present embodiment, referring to fig. 1 to 7, the driving motor 300 is used for driving the air guide 200 to reciprocate, so that the opening degree of at least one of the first air outlet 130 and the second air outlet 140 is reciprocally changed. It can be appreciated that in the operation process of the fresh air device, the fresh air volume in the fresh air duct 150 is kept stable, and the fresh air can only leave the fresh air duct 150 from the first air outlet 130 and the second air outlet 140, so that the air flow rate of the first air outlet 130 and the second air outlet 140 can be continuously switched by the reciprocating motion of the flow guide member 200, so as to achieve the effect of sweeping air, thereby stirring the air in the indoor environment, accelerating the air flow, and improving the ventilation efficiency. Of course, in other embodiments, the air guiding member 200 may be maintained at a predetermined position for a period of time during the operation of the fresh air device, and the driving motor 300 may adjust the air guiding member 200 to another predetermined position when the air quality of the detected environment is changed slowly.

Further, in the present embodiment, referring to fig. 1 to 7, the fresh air device further includes a gear 400 and a rack 500, wherein the gear 400 is fixedly connected to the output shaft of the driving motor 300, and the rack 500 is connected to the air guiding member 200 and meshed with the gear 400. In this way, the driving motor 300 drives the gear 400 to rotate, and the rotation form of the gear 400 is converted into the linear motion form of the rack 500 due to the engagement relationship between the gear 400 and the rack 500, so as to drive the deflector 200 to stably slide, so as to change the opening degree of the first air outlet 130 or the second air outlet 140. In another embodiment, the air cylinder of the fresh air device directly drives the air guiding element 200 to slide, or alternatively, the air guiding element 200 is fixedly arranged on the output shaft of the driving motor 300, and the driving motor 300 directly drives the air guiding element 200 to rotate, so as to adjust the opening of the first air outlet 130 or the second air outlet 140.

Further, in the present embodiment, referring to fig. 4 to 7, a guiding straight groove 180 is provided on a side wall of the fresh air duct 150, an extending direction of the guiding straight groove 180 is parallel to a sliding direction of the guiding member 200, the driving motor 300 is disposed outside the fresh air duct 150, the rack 500 is provided with a connecting rod 700, and the connecting rod 700 movably penetrates through the guiding straight groove 180 and is connected with the guiding member 200. It can be understood that the driving motor 300 is disposed outside the fresh air device, after the driving motor 300 drives the gear 400 to rotate, the rack 500 moves to drive the connecting rod 700 to slide along the extending direction of the guiding straight groove 180, so that the guiding member 200 slides along the extending direction of the guiding straight groove 180 along with the connecting rod 700, thereby adjusting the opening of the first air outlet 130 or the second air outlet 140, so that the driving motor 300, the gear 400, the rack 500 and other components do not occupy the space of the fresh air duct 150, so as to avoid interference with the flow of the fresh air, and ensure the stability and reliability of the fresh air transportation. Of course, in other embodiments, the driving motor 300 is disposed in the fresh air duct 150 and is disposed in a space formed by sandwiching the first guide wall 160 and the second guide wall 170, so as to ensure the integrity of the appearance of the fresh air device and avoid interfering with the fresh air delivery.

Further, in this embodiment, referring to fig. 2 and 3, the fresh air device further includes a cover plate 600, the cover plate 600 is covered on the outer side wall of the fresh air duct 150, the gear 400 and the rack 500 are movably clamped between the cover plate 600 and the outer side wall of the fresh air duct 150, and the output shaft of the driving motor 300 penetrates through the cover plate 600 and is connected with the gear 400. It can be appreciated that a containing gap is formed between the cover plate 600 and the outer side wall of the fresh air duct 150, the gear 400 is arranged in the containing gap and can rotate around the output shaft of the driving motor 300, the cover plate 600 is provided with an avoiding opening penetrating through the containing gap corresponding to the rack 500, the rack 500 penetrates through the avoiding opening and is meshed with the gear 400 in the containing gap, so that the cover plate 600 can fix the gear 400 and the rack 500 on the outer side wall of the fresh air duct 150, and the stability of transmission connection between the gear 400 and the rack 500 is ensured. Of course, in other embodiments, the fresh air device may not be provided with the cover plate 600, where the output shaft of the driving motor 300 is connected to the outer side wall of the fresh air duct 150, so that the output shaft is kept stable with the outer side wall of the fresh air duct 150 in the axial direction, the gear 400 is fixedly arranged on the output shaft of the driving motor 300, and the rack 500 is connected to the outer side wall of the fresh air duct 150 and can slide along the sliding direction of the guide straight groove 180 under the driving of the gear 400.

Further, in the present embodiment, referring to fig. 2 to 7, a sliding groove 190 is provided on an outer side wall of the fresh air duct 150, an extending direction of the sliding groove 190 is parallel to a sliding direction of the guiding element 200, a sliding protrusion 510 is protruding from the rack 500, and the sliding protrusion 510 is slidably inserted into the sliding groove 190. In this way, the rack 500 is driven by the gear 400, the sliding protrusion 510 slides along the extending direction of the chute 190, so that the moving direction of the rack 500 is limited in the extending direction of the chute 190, and the rack 500 is prevented from rotating around the gear 400, so that the rack 500 stably drives the guide member 200 to move. Of course, in other embodiments, a limiting groove may be disposed on opposite sides of the cover plate 600 and the rack 500, where an extending direction of the limiting groove is parallel to an extending direction of the guiding straight groove 180, and under the driving of the gear 400, the rack 500 may slide along the extending direction of the limiting groove, so as to ensure that the rack 500 stably pulls the guiding element 200 to move, and avoid the stress between the connecting rod 700 and a groove wall of the guiding straight groove 180, which affects the stability of the connecting rod 700 driving the guiding element 200 to move or causes damage to the connecting rod 700.

The utility model also provides an air conditioner indoor unit, which comprises a fresh air device, and the specific structure of the fresh air device refers to the embodiment, and because the air conditioner indoor unit adopts all the technical schemes of all the embodiments, the air conditioner indoor unit at least has all the beneficial effects brought by the technical schemes of the embodiments, and the detailed description is omitted.

The utility model also provides an air conditioner which comprises a fresh air device, and the specific structure of the fresh air device refers to the embodiment, and because the air conditioner adopts all the technical schemes of all the embodiments, the air conditioner at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein. The air conditioner is set as an integral air conditioner, and can also be set as a split air conditioner, and if the split air conditioner is adopted, the fresh air device is arranged in the air conditioner.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A fresh air device, comprising:

2. The fresh air device of claim 1, wherein a first air guide wall is disposed on a side of the first air outlet adjacent to the second air outlet, and the air guide member is connected to the first air guide wall and disposed opposite to the second air outlet, so as to change an opening degree of the second air outlet.

3. The fresh air device of claim 2, wherein the direction of extension of the deflector is parallel to the first deflector wall and is slidable relative to the first deflector wall in its own direction of extension;

4. The fresh air device of claim 1, further comprising a drive motor drivingly connected to the baffle.

5. The fresh air device of claim 4, wherein the drive motor is configured to drive the deflector to reciprocate so as to reciprocally vary an opening of at least one of the first air outlet and the second air outlet.

6. The fresh air device of claim 4, further comprising a gear and a rack, wherein the gear is fixedly connected to the output shaft of the drive motor, and wherein the rack is connected to the deflector and is meshed with the gear.

7. The fresh air device of claim 6, wherein a guiding straight groove is formed in the side wall of the fresh air duct, the extending direction of the guiding straight groove is parallel to the sliding direction of the guiding piece, the driving motor is arranged outside the fresh air duct, the rack is provided with a connecting rod, and the connecting rod movably penetrates through the guiding straight groove and is connected with the guiding piece.

8. The fresh air device of claim 7, further comprising a cover plate, wherein the cover plate covers the outer side wall of the fresh air duct, wherein the gear and the rack are movably clamped between the cover plate and the outer side wall of the fresh air duct, and wherein an output shaft of the driving motor penetrates through the cover plate and is connected with the gear.

9. The fresh air device of claim 7, wherein a chute is provided on an outer side wall of the fresh air duct, an extending direction of the chute is parallel to a sliding direction of the flow guiding member, the rack is provided with a sliding protrusion in a protruding manner, and the sliding protrusion is slidably inserted into the chute.

10. The fresh air device of any one of claims 1 to 9, wherein the volute includes a body portion and a diffuser, the first air outlet and the second air outlet being angled through the diffuser.

11. An indoor unit for an air conditioner, comprising a fresh air device according to any one of claims 1 to 10.

12. An air conditioner comprising a fresh air device according to any one of claims 1 to 10.