CN220958780U - Fresh air system and fresh air conditioner - Google Patents

Abstract

The utility model discloses a fresh air system and a fresh air conditioner. The fresh air system comprises a volute, a fan, a volute cover and an air door assembly, wherein the volute is provided with a fresh air outlet and an exhaust air outlet; the fan is arranged in the volute; the volute cover is covered on the volute, the volute cover is provided with a cavity communicated with the volute, and the cavity is provided with an exhaust air inlet, an internal circulation air inlet and a fresh air inlet; the air door assembly is used for opening or closing the fresh air outlet, the air exhaust inlet, the internal circulation air inlet and the fresh air inlet; when the fresh air inlet and the fresh air outlet are opened, a fresh air channel is formed between the interior of the volute and the cavity; when the exhaust air inlet and the exhaust air outlet are opened, an exhaust channel is formed between the interior of the volute and the cavity; when the internal circulation air inlet and the fresh air outlet are opened, an internal circulation channel is formed between the interior of the volute and the cavity. The utility model realizes three modes of compatible fresh air function, exhaust function and indoor circulation function, and simplifies the structure.

Description

Fresh air system and fresh air conditioner

Technical Field

The utility model relates to the technical field of fresh air conditioners, in particular to a fresh air system and a fresh air conditioner.

Background

Along with the improvement to the requirement of the travelling comfort of indoor environment, the quality of indoor air becomes one of factors that comfort experience is indispensable, and fresh air device can introduce the new trend, replaces indoor ventilation's air, reduces indoor carbon dioxide concentration to and other harmful gas's concentration, keeps indoor air fresh to improve indoor air not circulation's defect.

The existing fresh air device can only perform single air intake or single air exhaust, has low indoor air circulation efficiency, requires two fans and two pipes if an air intake device and an air exhaust device are installed, and additionally drills two wall holes, so that the fresh air device occupies space and also takes a large amount of equipment and installation cost.

Disclosure of utility model

The embodiment of the utility model provides a fresh air system and a fresh air conditioner, which aim to combine a fresh air device, an exhaust device and an indoor circulating device into the same device, simplify the structure of the fresh air system, improve the efficiency, save the space and simplify the installation.

The utility model provides a fresh air system, which comprises:

the volute is provided with a fresh air outlet and an exhaust air outlet;

The fan is arranged in the volute;

The volute cover is covered on the volute, the volute cover is provided with a cavity communicated with the volute, and the cavity is provided with an exhaust air inlet, an internal circulation air inlet and a fresh air inlet;

The air door assembly is used for opening or closing the fresh air outlet, the air exhaust inlet, the internal circulation air inlet and the fresh air inlet;

When the fresh air inlet and the fresh air outlet are opened, a fresh air channel is formed between the interior of the volute and the cavity; when the exhaust air inlet and the exhaust air outlet are opened, an exhaust channel is formed between the interior of the volute and the cavity; when the internal circulation air inlet and the fresh air outlet are opened, an internal circulation channel is formed between the interior of the volute and the cavity.

In the fresh air system provided by the utility model, the air door assembly comprises the first air door, the fresh air outlet and the exhaust air inlet are arranged at an upper-lower interval, and the first air door can move up and down along the fresh air outlet and the exhaust air inlet so as to open or close the fresh air outlet and the exhaust air inlet.

In the fresh air system provided by the utility model, the air door assembly further comprises a second air door, the air exhaust outlet and the fresh air inlet are arranged at intervals up and down, and the second air door can move up and down along the air exhaust outlet and the fresh air inlet so as to open or close the air exhaust outlet and the fresh air inlet.

In the fresh air system provided by the utility model, the air door assembly further comprises a third air door, and the third air door can rotate relative to the fresh air inlet to open or close the fresh air inlet.

In the fresh air system provided by the utility model, the air door assembly further comprises a fourth air door, and the fourth air door can rotate relative to the internal circulation air inlet to open or close the internal circulation air inlet.

In the fresh air system provided by the utility model, when the first air door moves upwards, the second air door moves downwards and the third air door rotates, the fresh air inlet and the fresh air outlet are opened to form the fresh air channel.

In the fresh air system provided by the utility model, when the first air door moves downwards, the second air door moves upwards and the third air door rotates, the air exhaust air inlet and the air exhaust air outlet are opened to form the air exhaust channel.

In the fresh air system provided by the utility model, the second air door is provided with a hollow cavity; when the fourth air door rotates, the second air door moves upwards and the third air door rotates, the internal circulation air inlet is opened, and the hollow cavity is communicated with the internal circulation air inlet and the fresh air outlet to form an auxiliary exhaust channel.

In the fresh air system provided by the utility model, when the fourth air door rotates, the second air door moves downwards and the first air door moves upwards, the internal circulation air inlet and the fresh air outlet are opened to form the internal circulation channel.

In the fresh air system provided by the utility model, the air door assembly further comprises a first motor and a first gear, the first air door is provided with a first rack, the first gear is meshed with the first rack, and the first motor drives the first air door to move by driving the first gear to rotate; and/or

The air door assembly further comprises a second motor and a second gear, the second air door is provided with a second rack, the second gear is meshed with the second rack, and the second motor drives the second air door to move through driving the second gear to rotate.

In the fresh air system provided by the utility model, the air door assembly further comprises a third motor, and an output shaft of the third motor is connected with one side of the third air door; and/or

The air door assembly further comprises a fourth motor, and an output shaft of the fourth motor is connected with one side of the fourth air door.

In the fresh air system provided by the utility model, the fresh air system further comprises a side pipeline, one end of the side pipeline is covered with the internal circulation air inlet, the fourth air door is arranged at one end of the side pipeline, the fourth air door can rotate towards the inner side of the side pipeline to open the internal circulation air inlet, and the other end of the side pipeline is used for being communicated with the inner side of a room.

In the fresh air system provided by the utility model, the fresh air system further comprises a fresh air connector, one end of the fresh air connector is covered on the fresh air inlet and the exhaust air outlet, and the other end of the fresh air connector is used for being communicated with the outside of the room.

In the fresh air system provided by the utility model, when the second air door moves downwards to close the exhaust air outlet and the third air door rotates to close the fresh air inlet, the second air door and the third air door shield one end of the fresh air connector.

In the fresh air system provided by the utility model, the fresh air system further comprises a filter screen, and the filter screen is obliquely arranged in the cavity.

The utility model also provides a fresh air conditioner comprising the fresh air system.

The utility model provides a fresh air system and a fresh air conditioner, wherein the fresh air system comprises: the novel air conditioner comprises a volute, a fan, a volute cover and an air door assembly, wherein a fresh air outlet and an air exhaust outlet are formed in the volute, the fan is arranged in the volute, the volute cover is covered on the volute, a cavity is formed in the volute cover and communicated with the volute, an air exhaust inlet, an internal circulation air inlet and a fresh air inlet are formed in the cavity, and when the air door assembly opens the fresh air inlet and the fresh air outlet, a fresh air channel is formed in the volute and in the cavity; when the air door component opens the air exhaust air inlet and the air exhaust air outlet, an air exhaust channel is formed in the volute and the cavity; when the air door component opens the internal circulation air inlet and the fresh air outlet, an internal circulation channel is formed in the volute and the cavity, and the internal circulation air outlet and the fresh air outlet share the same air outlet; from this, open different air intakes and air outlets through the air door subassembly, realize new trend passageway, the passageway of airing exhaust and the switching of inner loop channel, only need a fan can compatible new trend function, the three kinds of modes of function and indoor loop function of airing exhaust, simplify new trend system structure, practice thrift the space and simplified the installation.

Drawings

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

FIG. 1 is an exploded view of a fresh air system according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a fresh air system according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a fresh air system with a hidden seal cover according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a fresh air system with a hidden sealing cover according to an embodiment of the utility model;

FIG. 5 is a schematic view illustrating the upward movement of a first damper of the fresh air system according to an embodiment of the present utility model;

FIG. 6 is a schematic view illustrating a first damper of the fresh air system moving downward according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram of a side duct of a fresh air system according to an embodiment of the present utility model;

FIG. 8 is a schematic view of a fresh air system with side pipes hidden in an embodiment of the present utility model;

FIG. 9 is a schematic diagram of a first damper of the fresh air system according to an embodiment of the present utility model;

FIG. 10 is a schematic diagram of a second damper of the fresh air system according to an embodiment of the present utility model;

FIG. 11 is a schematic diagram of a third damper of the fresh air system according to an embodiment of the present utility model;

FIG. 12 is a schematic view of a fourth damper of the fresh air system according to an embodiment of the present utility model;

FIG. 13 is a schematic diagram of a fresh air system according to an embodiment of the present utility model when not in operation;

FIG. 14 is a schematic diagram of a fresh air mode of a fresh air system according to an embodiment of the present utility model;

FIG. 15 is a schematic diagram of an exhaust mode of the fresh air system according to an embodiment of the present utility model;

FIG. 16 is a schematic diagram of an auxiliary exhaust mode of the fresh air system according to an embodiment of the present utility model;

FIG. 17 is a schematic diagram of an indoor circulation mode of the fresh air system according to an embodiment of the present utility model;

FIG. 18 is a schematic diagram of a fresh air conditioner according to an embodiment of the present utility model;

FIG. 19 is another schematic view of a fresh air conditioner according to an embodiment of the present utility model;

Reference numerals illustrate:

1. A volute; 11. fresh air outlet; 12. an exhaust air outlet; 2. a blower; 3. a volute cover; 31. a cavity; 32. an air exhaust inlet; 33. an internal circulation air inlet; 34. a fresh air inlet; 4. a damper assembly; 411. a first damper; 412. a first motor; 413. a first gear; 414. a first rack; 421. a second damper; 422. a second motor; 423. a second gear; 424. a second rack; 425. a hollow cavity; 431. a third damper; 432. a third motor; 441. a fourth damper; 442. a fourth motor; 5. a side duct; 6. fresh air connector; 7. a filter screen; 8. sealing cover; 100. a fresh air system; 200. fresh air conditioner; 201. a bottom case; 202. an opening.

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 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.

The terms of directions used in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., refer only to the directions of the attached drawings. Accordingly, directional terminology is used to describe and understand the utility model and is not limiting of the utility model. In addition, in the drawings, structures similar or identical to those of the drawings are denoted by the same reference numerals.

Referring to fig. 1 to 19, fig. 1 is a schematic diagram illustrating a fresh air conditioner 200 according to an embodiment of the present utility model, including: the novel air conditioner comprises a volute 1, a fan 2, a volute 1 cover and an air door assembly 4, wherein the volute 1 is provided with a fresh air outlet 11 and an exhaust air outlet 12; the fan 2 is arranged in the volute 1; the spiral case 1 cover is arranged on the spiral case 1 in a covering manner, a cavity 31 communicated with the spiral case 1 is arranged on the spiral case 1 cover, and an exhaust air inlet 32, an internal circulation air inlet 33 and a fresh air inlet 34 are arranged on the cavity 31; the air door assembly 4 is used for opening or closing the fresh air outlet 11, the air exhaust outlet 12, the air exhaust inlet 32, the internal circulation air inlet 33 and the fresh air inlet 34; when the fresh air inlet 34 and the fresh air outlet 11 are opened, a fresh air channel is formed between the interior of the volute 1 and the cavity 31; when the exhaust air inlet 32 and the exhaust air outlet 12 are opened, an exhaust passage is formed between the interior of the volute 1 and the cavity 31; when the internal circulation air inlet 33 and the fresh air outlet 11 are opened, an internal circulation channel is formed between the interior of the volute 1 and the cavity 31.

Referring to fig. 2 to 4, specifically, the scroll 1 is circular overall, the fan 2 is disposed at the center of the scroll 1, and the upper side and the lower side of the scroll 1 are provided with extended housing portions tangential to the circular scroll 1. The fresh air outlet 11 is arranged on the upper extending shell part, and the exhaust air outlet 12 is arranged on the lower extending shell part. One side of the scroll 1 is opened, and the scroll 1 covers the opened side of the scroll 1 to close the scroll 1. The spiral case 1 lid is equipped with cavity 31 on one side of spiral case 1 dorsad, and cavity 31 includes rectangle cavity and triangle cavity, and the triangle cavity is located the downside of rectangle cavity, is link up between two cavities 31, and the top of circular spiral case 1 is located to the rectangle cavity, and the top of casing is extended to the downside is located to the triangle cavity. The air exhaust air inlet 32 is arranged on the upper side of the rectangular cavity, and the internal circulation air inlet 33 and the fresh air inlet 34 are arranged on two adjacent side walls of the triangular cavity. The cover of the volute 1 is hollowed with a circular through hole, so that the volute 1 is communicated with the rectangular cavity. The side of the cavity 31 far away from the volute 1 is also covered with a sealing cover 8, the shape of the sealing cover 8 is matched with that of the cavity 31, the sealing cover 8 is also in a shape combining rectangle and triangle, and the sealing cover 8 is used for sealing the cavity 31. The damper assembly 4 includes a plurality of dampers disposed at the fresh air outlet 11, the exhaust air outlet 12, the exhaust air inlet 32, the internal circulation air inlet 33, and the fresh air inlet 34, and configured to open the air inlets and outlets. The structural form of the damper is various, for example, may be a rotary type, a sliding type, or a shutter type, and is not limited herein, as long as it can realize an opening or closing function.

In this embodiment, the fresh air system 100 further includes a filter screen 7, and the filter screen 7 is obliquely disposed in the cavity 31. Specifically, an inclined step or groove is formed in the inner wall of the rectangular cavity, and the filter screen 7 is placed on the step or groove, so that the filter screen 7 is obliquely arranged. Specifically, the filter screen 7 is inclined along the diagonal of the rectangular cavity. The side of the filter screen 7 close to the air exhaust inlet 32 is higher, and the side of the filter screen 7 close to the triangular cavity is lower, namely the filter screen 7 is inclined downwards from the top side of the air exhaust inlet 32. The filter screen 7 is arranged along the diagonal line in an inclined way so that the contact area with the air flow is the largest, and the filter screen can be fully contacted with the air, so that impurities in the air can be effectively filtered. The filter screen 7 is used for filtering dust, peculiar smell, partial bacteria and the like in the air outside the filter chamber in the fresh air function mode, and is used for filtering dust, partial bacteria and the like in the indoor air in the indoor circulation function mode.

In this embodiment, the fresh air system 100 further includes a fresh air connector 6, one end of the fresh air connector 6 is covered on the fresh air inlet 34 and the exhaust air outlet 12, and the other end of the fresh air connector 6 is used for being communicated with the outdoor side. Specifically, the fresh air connector 6 is in a pipeline shape as a whole, one end is a rectangular connector, the other end is a circular connector, and the rectangular connector is simultaneously fixed with the lower side extension shell and the triangular cavity, so that the exhaust air outlet 12 on the lower side extension shell and the fresh air inlet 34 on the triangular cavity are covered. The circular joint connects the pipe connected to the outside of the chamber. Thus, the outdoor fresh air can enter the fresh air inlet 34 through the fresh air connector 6, and in addition, the indoor turbid gas can enter the fresh air connector 6 through the exhaust air outlet 12 and is discharged to the outdoor side through the fresh air connector 6.

In this embodiment, the fresh air system 100 further includes a side pipe 5, one end of the side pipe 5 covers the internal circulation air inlet 33, and the other end of the side pipe 5 is used for communicating with the indoor side. Specifically, one end of the side pipe 5 is fixed at the inner circulation air inlet 33 on the triangular cavity, and the shape of one end of the side pipe 5 is the same as the shape of the inner circulation air inlet 33. The fresh air system 100 of this embodiment is installed on the left side of the air conditioner, and an opening 202 is provided on one side of the air outlet of the bottom casing 201 of the air conditioner. The other end of the side duct 5 is bent toward the opening 202, whereby the indoor air flow can enter the side duct 5 through the opening 202 and further enter the fresh air system 100 from the internal circulation air intake 33.

When the fresh air system 100 enters the fresh air mode, the air door assembly 4 opens the fresh air inlet 34 and the fresh air outlet 11, fresh air outside the room enters from the fresh air connector 6, and is discharged from the fresh air outlet 11 after passing through the filter screen 7 under the action of the fan 2, so that a fresh air function is realized.

When the fresh air system 100 enters the air exhaust mode, the air door assembly 4 opens the air exhaust air inlet 32 and the air exhaust air outlet 12, air flow on the indoor side enters from the air exhaust air inlet 32, and is exhausted to the outdoor side from the fresh air connector 6 through the air exhaust air outlet 12 under the action of the fan 2, so that an air exhaust function is realized.

When the fresh air system 100 enters the indoor circulation mode, the air door assembly 4 opens the internal circulation air inlet 33 and the fresh air outlet 11, air flow on the indoor side enters from the side pipeline 5, and is discharged to the indoor side from the fresh air outlet 11 after passing through the filter screen 7 under the action of the fan 2, and the fresh air outlet 11 and the internal circulation air outlet are the same air outlet, and are shared, so that the indoor internal circulation function is realized.

Through implementing this embodiment, utilize air door subassembly 4 to open different air intakes and air outlet and form different wind channel to realize the switching of new trend function, exhaust function and indoor circulation function three kinds of modes. Only one fan 2 is needed to be compatible with three modes of a fresh air function, an air exhaust function and an indoor circulation function, pipelines and multiple holes are not needed to be additionally increased, the installation is greatly simplified, and the cost and the space are saved.

Referring to fig. 5 and 6, in an embodiment, the damper assembly 4 includes a first damper 411, where the fresh air outlet 11 and the exhaust air inlet 32 are disposed at an upper-lower interval, and the first damper 411 may move up and down along the fresh air outlet 11 and the exhaust air inlet 32 to open or close the fresh air outlet 11 and the exhaust air inlet 32. Specifically, the fresh air outlet 11 and the exhaust air inlet 32 are located on the upper side of the entire fresh air system 100. The fresh air outlet 11 and the exhaust air inlet 32 are adjacent up and down, the exhaust air inlet 32 is above, the fresh air outlet 11 is below, and the first air door 411 is movably installed with the rectangular cavity and the volute 1 respectively, so that the first air door 411 can move up and down. When the first air door 411 moves upwards, the air exhaust inlet 32 is closed, and the fresh air outlet 11 is opened; when the first damper 411 moves down, the exhaust air inlet 32 is opened and the fresh air outlet 11 is closed. Therefore, the fresh air outlet 11 and the exhaust air inlet 32 are switched by up-and-down movement of one air door, the structure is simplified, and the space is saved.

With continued reference to fig. 3, in this embodiment, the damper assembly 4 further includes a second damper 421, where the exhaust air outlet 12 and the fresh air inlet 34 are disposed at an upper and lower interval, and the second damper 421 can move up and down along the exhaust air outlet 12 and the fresh air inlet 34 to open or close the exhaust air outlet 12 and the fresh air inlet 34. Specifically, the exhaust air outlet 12 and the fresh air inlet 34 are located on the underside of the entire fresh air system 100. The air exhaust outlet 12 and the fresh air inlet 34 are adjacent up and down, the fresh air inlet 34 is up, the air exhaust outlet 12 is down, and the second air door 421 is movably mounted with the triangular cavity, so that the second air door 421 can move up and down. When the second air door 421 moves upwards, the fresh air inlet 34 is closed, and the exhaust air outlet 12 is opened; when the second damper 421 moves down, the fresh air intake 34 is opened and the exhaust air outlet 12 is closed. Therefore, the switching between the fresh air inlet 34 and the exhaust air outlet 12 is realized through the up-and-down movement of one air door, the structure is simplified, and the space is saved.

With continued reference to fig. 3, in this embodiment, the damper assembly 4 further includes a third damper 431, and the third damper 431 may rotate relative to the fresh air intake 34 to open or close the fresh air intake 34. Specifically, the upper side of the third air door 431 rotates around the upper edge of the fresh air inlet 34, the third air door 431 can rotate in the triangular cavity, and when the third air door 431 rotates upwards, the fresh air inlet 34 is opened, and when the third air door 431 rotates downwards, the fresh air inlet 34 is closed.

With continued reference to fig. 3, in this embodiment, the damper assembly 4 further includes a fourth damper 441, and the fourth damper 441 is rotatable with respect to the inner circulation intake 33 to open or close the inner circulation intake 33. Specifically, the upper side of the fourth air door 441 rotates around the upper edge of the inner circulation air inlet 33, the third air door 431 may rotate outside the triangular cavity, and the inner circulation air inlet 33 is opened when the fourth air door 441 rotates outward, and the fresh air inlet 34 is closed when the fourth air door 441 rotates inward.

Referring to fig. 7 and 8, in a specific implementation, the fresh air system 100 further includes a side duct 5, one end of the side duct 5 covers the internal circulation air inlet 33, the fourth air door 441 is disposed at one end of the side duct 5, the fourth air door 441 may rotate toward the inner side of the side duct 5 to open the internal circulation air inlet 33, and the other end of the side duct 5 is used for communicating with the indoor side. Specifically, the fourth damper 441 is installed in one end of the side duct 5, and the shape of one end of the side duct 5 is matched with the shape of the inner circulation air intake 33 and the fourth damper 441. The upper side of the fourth air door 441 rotates around the upper edge of one end of the side duct 5 toward the inside of the side duct 5, and when the fourth air door 441 rotates toward the inside of the side duct 5, the inner circulation air intake 33 is opened; when the fourth damper 441 rotates toward the outside of the side duct 5, the inner circulation air intake 33 is closed. By designing the fourth air door 441 to rotate toward the inner side of the side pipe 5, the rotation of the third air door 431 is prevented from being interfered, and the rotation of the fourth air door 441 and the rotation of the third air door 431 are independent from each other and do not interfere with each other.

Referring to fig. 9 and 10, in an embodiment, the damper assembly 4 further includes a first motor 412 and a first gear 413, the first damper 411 is provided with a first rack 414, the first gear 413 is meshed with the first rack 414, and the first motor 412 drives the first damper 411 to move by driving the first gear 413 to rotate; the air door assembly 4 further comprises a second motor 422 and a second gear 423, the second air door 421 is provided with a second rack 424, the second gear 423 is meshed with the second rack 424, and the second motor 422 drives the second air door 421 to move by driving the second gear 423 to rotate. Specifically, the transmission structures of the first air door 411 and the second air door 421 are similar, and are all driven by gear tooth belts, a gear belt is arranged on one side edge of the air door, a gear is installed on an output shaft of a motor, the gear is meshed with the gear belt, and the motor drives the gear belt to rotate so as to drive the gear belt to move, so that the movement of the air door is realized. Specifically, the first gear 413 and the first toothed belt are close to the sides of the fresh air outlet 11 and the air exhaust inlet 32, the first motor 412 is fixed on the volute 1 or the rectangular cavity, and the first air door 411 is driven by the first motor 412 to move up from the fresh air outlet 11 to the air exhaust inlet 32 or move down from the air exhaust inlet 32 to the fresh air outlet 11. Similarly, the second gear 423 and the second rack 424 are close to the sides of the fresh air inlet 34 and the air outlet 12, the second motor 422 is fixed on the triangular cavity or the volute 1, and the second motor 422 drives the second air door 421 to move up from the air outlet 12 to the fresh air inlet 34 or move down from the fresh air inlet 34 to the air outlet 12. Through the transmission cooperation of gear and toothed belt, realize the reciprocates of first air door 411 and second air door 421, simple structure, stability is good, and the reliability is high.

Referring to fig. 11 and 12, in an embodiment, the damper assembly 4 further includes a third motor 432, and an output shaft of the third motor 432 is connected to one side of the third damper 431; the damper assembly 4 further includes a fourth motor 442, and an output shaft of the fourth motor 442 is connected to one side of the fourth damper 441. Specifically, the third motor 432 is fixed on the triangular cavity, and a rotating shaft is fixed on the upper side of the third air door 431 and connected with an output shaft of the third motor 432 through a coupling. The output shaft of the third motor 432 rotates to drive the third air door 431 to rotate. Similarly, the fourth air door 441 rotates similarly, the fourth motor 442 is fixed to the side duct 5, and a rotating shaft is fixed to the upper side of the fourth air door 441 and connected to an output shaft of the fourth motor 442 through a coupling. The fourth damper 441 is driven to rotate by the rotation of the output shaft of the fourth motor 442. The difference between the rotation of the third damper 431 and the rotation of the fourth damper 441 is that the third damper 431 rotates toward the inside of the triangular cavity, and the fourth damper 441 rotates toward the inside of the side duct 5, so that the rotation of the two does not interfere.

Referring to fig. 13, in the present embodiment, when the second damper 421 moves down to close the exhaust outlet 12 and the third damper 431 rotates to close the fresh air inlet 34, the second damper 421 and the third damper 431 block one end of the fresh air connector 6. Specifically, when the fresh air system 100 is not in operation, the third air door 431 and the second air door 421 may function to prevent the back-flowing air and isolate the outdoor noise and the bad smell. Specifically, the second air door 421 is moved downwards to close the exhaust air outlet 12, and the third air door 431 is rotated to fall to close the fresh air inlet 34, so that the second air door 421 and the third air door 431 jointly shield one end of the fresh air connector 6, thereby playing a role in preventing outdoor air from flowing backwards into the ventilation component to generate abnormal noise and noise, and blocking peculiar smell, dust and the like.

Referring to fig. 14, in an embodiment, when the first damper 411 moves up, the second damper 421 moves down, and the third damper 431 rotates, the fresh air inlet 34 and the fresh air outlet 11 are opened to form the fresh air channel. Specifically, the first motor 412 drives the first gear 413 to rotate, the first gear 413 engages the first air door 411, so that the first air door 411 moves upward, and the fresh air outlet 11 is opened. The second motor 422 drives the second gear 423 to rotate, and the second gear 423 engages the second damper 421 to cause the second damper 421 to move downward. The third motor 432 drives the third air door 431 to rotate to open towards the upper inner side, and at the moment, the fresh air inlet 34 is opened. The fourth damper 441 remains closed. The fan 2 starts to rotate, and outdoor fresh air enters the volute 1 from the fresh air inlet 34 in the fresh air connector 6, enters the fan 2 from the axial direction through the healthy filter screen 7, flows out from the radial direction, and finally is discharged into the room from the fresh air outlet 11.

Referring to fig. 15, in an embodiment, when the first damper 411 moves down, the second damper 421 moves up, and the third damper 431 rotates, the exhaust air inlet 32 and the exhaust air outlet 12 are opened to form the exhaust passage. Specifically, the first motor 412 drives the first gear 413 to rotate, the first gear 413 engages the first air door 411, so that the first air door 411 moves downward, and at this time, the exhaust air inlet 32 is opened. The third motor 432 rotates the third damper 431 to be opened upward inside. The second motor 422 drives the second gear 423 to rotate, and the second gear 423 engages the second air door 421 to cause the second air door 421 to move upwards, at this time, the air outlet 12 is opened. The indoor turbid air enters the cavity 31 from the exhaust air inlet 32, flows out from the axial direction into the fan 2, finally is discharged into the fresh air connector 6 from the exhaust air outlet 12 and then is discharged to the outdoor side.

Referring to fig. 16, in one embodiment, the second damper 421 is provided with a hollow cavity 425; when the fourth air door 441 rotates, the second air door 421 moves upward, and the third air door 431 rotates, the internal circulation air inlet 33 is opened, and the hollow cavity 425 communicates the internal circulation air inlet 33 with the fresh air outlet 11 to form an auxiliary air exhaust channel. Specifically, the second damper 421 has a triangular shape as a whole, and two adjacent sides of the triangular shape face the inner circulation air inlet 33 and the fresh air inlet 34/the exhaust air outlet 12, respectively. The second air door 421 is provided with a hollow cavity 425 penetrating through the two sides, so that the internal circulation air inlet 33, the hollow cavity 425 and the fresh air outlet 11 form an auxiliary air exhaust channel. The internal circulation air inlet 33 corresponds to the second exhaust air inlet 32. When the air conditioner is in a working state, the air discharge quantity compensation can be started, the fourth motor 442 drives the fourth air door 441 to rotate outwards to open, part of air at the air outlet of the air conditioner enters the side pipeline 5 of the fresh air system 100 through the side opening 202 of the bottom shell 201, enters the hollow cavity 425 in the middle of the second air door 421 through the opening 202 opened by the fourth air door 441, and then enters the fresh air connector 6 to be discharged outdoors.

Referring to fig. 17, in an embodiment, when the fourth damper 441 rotates, the second damper 421 moves down, and the first damper 411 moves up, the inner circulation air inlet 33 and the fresh air outlet 11 are opened to form the inner circulation passage. Specifically, the first motor 412 drives the first gear 413 to rotate, the first gear 413 engages the first air door 411, so that the first air door 411 moves upward, and at this time, the internal circulation air outlet is opened. The second motor 422 drives the second gear 423 to rotate, and the second gear 423 engages the second damper 421 to cause the second damper 421 to move downward. The third damper 431 is rotated and dropped by the third motor 432. The fourth motor 442 rotates the fourth damper 441 to open to the outside. The fan 2 rotates to drive partial air at the air outlet of the air conditioner to enter the side pipeline 5 through the side opening 202 of the bottom shell 201, the internal circulation air inlet 33 opened through the fourth air door 441 enters the fresh air system 100, dust and partial bacteria are filtered out through the healthy filter screen 7, then the air enters the fan 2 axially, and finally the air is discharged into the indoor side from the internal circulation air outlet after the air is discharged from the radial direction.

Referring to fig. 18 and 19, an embodiment of the present utility model further provides a fresh air conditioner 200, including the fresh air system 100 of the foregoing embodiment. The fresh air system 100 is described in detail in the above embodiments, and is not described herein for brevity.

Through the fresh air conditioner 200 of this embodiment, the fresh air system 100 is designed with a fresh air inlet 34, a fresh air outlet 11, an air exhaust air inlet 32, an air exhaust air outlet 12, an internal circulation air inlet 33 and an internal circulation air outlet, wherein the second air exhaust air inlet 32 and the internal circulation air inlet 33 are at the same position, and the fresh air outlet 11 and the internal circulation air outlet are at the same position. Wherein the fresh air outlet 11 (internal circulation air outlet) and the exhaust air inlet 32 are positioned above the indoor side of the air conditioner, the opening and closing is realized by the up-and-down movement of the first air door 411, fresh air is discharged into the room through the fresh air outlet 11, and indoor turbid air enters the fresh air system 100 through the exhaust air inlet 32; the fresh air inlet 34 and the exhaust air outlet 12 are located in the fresh air system 100, and the second air door 421 moves up and down to realize switching. The second exhaust air inlet 32 (the internal circulation air inlet 33) is located inside the side pipeline 5 at the side of the fresh air system 100, and the switch is realized through the rotation of the fourth air door 441. The positions of the air doors are moved to form different air channels in a matched mode to realize the switching of three modes of a fresh air function, an air exhaust function and an indoor circulation function. The problem that two fans 2 are needed for bidirectional ventilation is solved. The problem that two pipes are needed for bidirectional ventilation and two wall holes are additionally drilled is solved, pipelines are not required to be additionally increased, multiple holes are not required to be drilled, the wall is not required to be damaged by additional holes, and the installation is attractive. The whole ventilation part can be designed on the inner side of the air conditioner, the aesthetic feeling of the appearance of the air conditioner is not affected, and the fresh air connector 6 is convenient to install without additional punching on a wall. The fresh air device, the exhaust device and the indoor circulating device are combined into the same device, so that the structure of the fresh air system 100 is simplified, the efficiency is improved, the space is saved, and the installation is simplified.

While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (16)

1. A fresh air system, comprising:

the volute is provided with a fresh air outlet and an exhaust air outlet;

The fan is arranged in the volute;

The volute cover is covered on the volute, the volute cover is provided with a cavity communicated with the volute, and the cavity is provided with an exhaust air inlet, an internal circulation air inlet and a fresh air inlet;

The air door assembly is used for opening or closing the fresh air outlet, the air exhaust inlet, the internal circulation air inlet and the fresh air inlet;

When the fresh air inlet and the fresh air outlet are opened, a fresh air channel is formed between the interior of the volute and the cavity; when the exhaust air inlet and the exhaust air outlet are opened, an exhaust channel is formed between the interior of the volute and the cavity; when the internal circulation air inlet and the fresh air outlet are opened, an internal circulation channel is formed between the interior of the volute and the cavity.

2. The fresh air system of claim 1, wherein the damper assembly comprises a first damper, the fresh air outlet and the exhaust air inlet are disposed at an up-and-down interval, and the first damper is movable up-and-down along the fresh air outlet and the exhaust air inlet to open or close the fresh air outlet and the exhaust air inlet.

3. The fresh air system of claim 2, wherein the damper assembly further comprises a second damper, the exhaust air outlet and the fresh air inlet being disposed in a vertically spaced relationship, the second damper being movable up and down along the exhaust air outlet and the fresh air inlet to open or close the exhaust air outlet and the fresh air inlet.

4. The fresh air system of claim 3, wherein the damper assembly further comprises a third damper rotatable relative to the fresh air intake to open or close the fresh air intake.

5. The fresh air system of claim 4, wherein the damper assembly further comprises a fourth damper rotatable relative to the internal circulation intake to open or close the internal circulation intake.

6. The fresh air system of claim 5, wherein the fresh air intake and the fresh air outlet are opened to form the fresh air channel when the first damper moves up, the second damper moves down, and the third damper rotates.

7. The fresh air system of claim 5, wherein the exhaust air intake and the exhaust air outlet are opened to form the exhaust air channel when the first air door moves downward, the second air door moves upward, and the third air door rotates.

8. The fresh air system of claim 5, wherein the second damper is provided with a hollow cavity; when the fourth air door rotates, the second air door moves upwards and the third air door rotates, the internal circulation air inlet is opened, and the hollow cavity is communicated with the internal circulation air inlet and the fresh air outlet to form an auxiliary exhaust channel.

9. The fresh air system of claim 5, wherein the internal circulation intake and the fresh air outlet are opened to form the internal circulation channel when the fourth damper is rotated, the second damper is moved downward, and the first damper is moved upward.

10. The fresh air system of claim 5, wherein the damper assembly further comprises a first motor and a first gear, the first damper having a first rack, the first gear being engaged with the first rack, the first motor driving the first gear to rotate to move the first damper; and/or

The air door assembly further comprises a second motor and a second gear, the second air door is provided with a second rack, the second gear is meshed with the second rack, and the second motor drives the second air door to move through driving the second gear to rotate.

11. The fresh air system of claim 5, wherein the damper assembly further comprises a third motor, an output shaft of the third motor being coupled to one side of the third damper; and/or

The air door assembly further comprises a fourth motor, and an output shaft of the fourth motor is connected with one side of the fourth air door.

12. The fresh air system of claim 5, further comprising a side duct, wherein one end of the side duct is covered with the internal circulation air inlet, the fourth air door is disposed at one end of the side duct, the fourth air door is rotatable toward the inside of the side duct to open the internal circulation air inlet, and the other end of the side duct is used for communicating with the indoor side.

13. The fresh air system of claim 5, further comprising a fresh air connector, wherein one end of the fresh air connector is covered on the fresh air inlet and the exhaust air outlet, and the other end of the fresh air connector is used for communicating with the outside of the room.

14. The fresh air system of claim 13, wherein the second and third dampers block one end of the fresh air connection when the second damper is moved down to close the exhaust outlet and the third damper is rotated to close the fresh air inlet.

15. The fresh air system according to any one of claims 1 to 14, further comprising a filter screen disposed obliquely in the cavity.

16. A fresh air conditioner comprising a fresh air system according to any one of claims 1 to 15.