Fresh air system and air conditioner having the same

Abstract

The present invention provides a fresh air system and an air conditioner having the same, the fresh air system comprising: a plurality of ventilation ducts, a switching structure and a plurality of fan components, the switching structure having a switching cavity for communicating with the plurality of ventilation ducts and a baffle assembly arranged in the switching cavity, at least part of the baffle assembly being movably arranged so that the baffle assembly has a separation state for dividing the switching cavity into a plurality of sub-cavities and a avoidance state for interconnecting at least two of the plurality of sub-cavities, the plurality of sub-cavities being connected to the plurality of ventilation ducts in a one-to-one correspondence; the plurality of fan components being arranged in a one-to-one correspondence with the plurality of sub-cavities, the switching structure being provided with a plurality of connecting vents for connecting each sub-cavity with the corresponding fan components. The fresh air system of the present invention solves the problem of low efficiency in improving indoor air quality in air conditioners with fresh air function in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of air conditioning, and in particular to a fresh air system and an air conditioner having the same. Background Art

[0002] An air conditioner refers to a device that is mainly used to adjust the indoor air temperature. Due to the continuous emergence of air pollution problems such as haze, people are paying more and more attention to the indoor air quality and attaching more importance to the air purification function of indoor air conditioners.

[0003] At present, the indoor units of floor-standing air conditioners on the market are usually equipped with fresh air devices, but most of them introduce outdoor fresh air into the indoor environment to improve the indoor air quality, and there are few products that lead indoor polluted air out to the outdoors.

[0004] One type of air conditioner in the prior art is equipped with a fresh air device in the indoor unit of the air conditioner. The fresh air device uses a centrifugal fan to draw outdoor ambient air into the fresh air duct through the fresh air pipe, and flows out from the fresh air outlet, enters the indoor unit through the air inlet, and finally blows into the room through the air outlet of the indoor unit. This air conditioner only introduces outdoor air into the room, but does not exhaust the indoor air to the outside.

[0005] Another air conditioner in the prior art uses a dual centrifugal fan to directly exhaust indoor air to the outside, and can also introduce outdoor air into the room. However, although this air conditioner in the prior art has the functions of introducing outdoor fresh air and exhausting indoor air, the fresh air introduced by this air conditioner is small, and the efficiency of improving indoor air quality is low, which cannot meet the needs of users. Summary of the invention

[0006] The main purpose of the present invention is to provide a fresh air system and an air conditioner having the same, so as to solve the problem that the air conditioner with fresh air function in the prior art has low efficiency in improving indoor air quality.

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a fresh air system is provided, comprising: a plurality of ventilation ducts; a switching structure, the switching structure having a switching cavity for communicating with the plurality of ventilation ducts and a baffle assembly arranged in the switching cavity, at least a part of the baffle assembly being movably arranged so that the baffle assembly has a separation state for dividing the switching cavity into a plurality of sub-cavities and a avoidance state for interconnecting at least two of the plurality of sub-cavities, the plurality of sub-cavities being connected to the plurality of ventilation ducts in a one-to-one correspondence; a plurality of fan components, the plurality of fan components being arranged in a one-to-one correspondence with the plurality of sub-cavities, and a plurality of connecting vents for connecting each sub-cavity with the corresponding fan components are arranged on the switching structure.

[0008] Furthermore, the baffle assembly includes a plurality of wind shields, which are arranged one-to-one corresponding to the plurality of connecting air vents, and each wind shield can be movably arranged so that when the baffle assembly is in the avoidance state, each wind shield can shield at least part of the corresponding connecting air vents.

[0009] Furthermore, the switching structure is provided with a plurality of air duct openings, and the plurality of air duct openings are arranged in one-to-one correspondence with the plurality of ventilation ducts, so that each ventilation duct is connected with the switching cavity through the corresponding air duct opening; the switching structure also includes a plurality of shielding plates, and the plurality of shielding plates are arranged in one-to-one correspondence with the plurality of air duct openings, so that the corresponding air duct openings can be shielded or avoided through each shielding plate.

[0010] Furthermore, a plurality of air duct openings are arranged on a first side wall of the switching cavity, and a plurality of connecting air openings are arranged on a second side wall of the switching cavity.

[0011] Furthermore, the fresh air system also includes: a filter component, which is arranged between the switching structure and at least one fan component among the multiple fan components, so that the airflow flowing out of the switching structure is filtered by the filter component and then flows into the at least one fan component.

[0012] Furthermore, the multiple ventilation ducts include induced draft ducts and exhaust ducts, and the multiple fan components include induced draft fans and exhaust fans; the induced draft ducts are connected to the induced draft fans through a switching structure so that the airflow introduced by the induced draft ducts is transported to the room through the induced draft fan; the exhaust ducts are connected to the exhaust fan through a switching structure so that the airflow introduced by the exhaust fan is discharged to the outside through the exhaust duct.

[0013] Furthermore, the fresh air system also includes: an air supply duct, the air outlet of the induced draft fan is connected to the air supply duct; and / or a transition duct, the air outlet of the exhaust fan is connected to the switching structure through the transition duct.

[0014] Furthermore, the baffle assembly includes a first wind shield and a second wind shield. When the baffle assembly is in a separated state, the first wind shield and the second wind shield are both in a first separated position, so that the multiple sub-cavities include independently arranged induced air sub-cavities and exhaust air sub-cavities; wherein the induced air sub-cavity is connected to the induced air fan, and the exhaust air sub-cavity is connected to the exhaust fan.

[0015] Furthermore, the multiple connecting air openings include a first connecting opening for connecting the induced draft fan and the switching cavity and a second connecting opening for connecting the exhaust fan and the switching cavity; when the baffle assembly is in the avoidance state, the first wind shield and the second wind shield have a double-tube induced draft blocking position, a double-tube exhaust wind blocking position, and an internal circulation blocking position; when the first wind shield and the second wind shield are in the double-tube induced draft blocking position, the first wind shield and the second wind shield jointly block the second connecting opening to close the second connecting opening; when the first wind shield and the second wind shield are in the double-tube exhaust blocking position, the first wind shield and the second wind shield jointly block the first connecting opening to close the first connecting opening; when the first wind shield and the second wind shield are in the internal circulation blocking position, the first wind shield blocks the first connecting opening and the second wind shield blocks the second connecting opening to respectively block a portion of the opening of the first connecting opening and a portion of the opening of the second connecting opening.

[0016] Furthermore, the switching structure is provided with an induced draft duct opening for communicating with the induced draft duct and an exhaust duct opening for communicating with the exhaust duct; the switching structure includes an induced draft baffle plate for opening or closing the induced draft duct opening and an exhaust baffle plate for opening or closing the exhaust duct opening; the fresh air system includes a single-tube induced draft mode, a single-tube exhaust mode, a double-tube induced draft mode, a double-tube exhaust mode and an internal circulation mode; when the fresh air system is in the single-tube induced draft mode, the baffle assembly is in a separated state, the induced draft baffle plate is in an open state, the induced draft fan is in a working state, and the exhaust fan is in a non-working state; when the fresh air system is in the single-tube exhaust mode, the baffle assembly is in a separated state, the exhaust draft baffle plate is in an open state, the exhaust fan is in a working state state, and the induced draft fan is in a non-working state; when the fresh air system is in double-pipe induced draft mode, the first wind shield and the second wind shield are in the double-pipe induced draft shielding position, the induced draft shield and the exhaust air shield are both in the open state, the induced draft fan is in the working state, and the exhaust fan is in the non-working state; when the fresh air system is in double-pipe exhaust mode, the first wind shield and the second wind shield are in the double-pipe exhaust shielding position, the induced draft shield and the exhaust air shield are both in the open state, the exhaust fan is in the working state, and the induced draft fan is in the non-working state; when the fresh air system is in internal circulation mode, the first wind shield and the second wind shield are in the internal circulation shielding position, the induced draft shield and the exhaust air shield are both in the closed state, and the induced draft fan and the exhaust fan are both in the working state.

[0017] According to another aspect of the present invention, an air conditioner is provided, comprising a casing and a fresh air system arranged in the casing, wherein the fresh air system is the above-mentioned fresh air system.

[0018] The technical scheme of the present invention is applied, and the fresh air system includes: a plurality of ventilation ducts, a switching structure and a plurality of fan components, the switching structure has a switching cavity for communicating with the plurality of ventilation ducts and a baffle assembly arranged in the switching cavity, at least part of the baffle assembly is movably arranged, so that the baffle assembly has a separation state for dividing the switching cavity into a plurality of sub-cavities and a avoidance state for making at least two of the plurality of sub-cavities communicate with each other, and the plurality of sub-cavities are connected one-to-one with the plurality of ventilation ducts; the plurality of fan components are arranged one-to-one with the plurality of sub-cavities, and the switching structure is provided with a plurality of connecting vents for connecting each sub-cavity with the corresponding fan components. With the above arrangement, the fresh air system is provided with a plurality of fan components, and the plurality of fan components can not only realize the functions of introducing outdoor fresh air and exhausting indoor air, but also realize multiple air ducts to increase the amount of fresh air introduced. Moreover, by setting the baffle assembly to control the flow direction of the airflow, the fresh air system has a plurality of working modes, which solves the problem that the air conditioner with fresh air function in the prior art has low efficiency in improving indoor air quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 It shows a structural schematic diagram of the fresh air system according to the present invention in a single-duct air induction mode;

[0021] Figure 2 It shows a structural schematic diagram of the switching structure of the fresh air system of the present invention in the single-duct air induction mode;

[0022] Figure 3 A schematic structural diagram of the fresh air system of the present invention in a single-pipe exhaust mode is shown;

[0023] Figure 4 It shows a structural schematic diagram of the switching structure of the fresh air system of the present invention in a single-pipe exhaust mode;

[0024] Figure 5 A schematic structural diagram showing the fresh air system of the present invention in a double-duct air induction mode;

[0025] Figure 6 It shows a structural schematic diagram of the switching structure of the fresh air system of the present invention in the double-duct air induction mode;

[0026] Figure 7 A schematic diagram showing the structure of the fresh air system of the present invention in a double-pipe exhaust mode;

[0027] Figure 8It shows a structural schematic diagram of the switching structure of the fresh air system of the present invention in a double-pipe exhaust mode;

[0028] Fig. 9 A schematic diagram showing the structure of the fresh air system of the present invention in an internal circulation mode;

[0029] Fig.10 It shows a schematic structural diagram of the switching structure of the fresh air system of the present invention in the internal circulation mode;

[0030] Fig.11 A schematic structural diagram of a fan component of a fresh air system of the present invention is shown;

[0031] Fig.12 The internal structure schematic diagram of the air conditioner of the present invention is shown;

[0032] Fig.13 A schematic structural diagram showing a side surface of an air conditioner of the present invention;

[0033] Fig.14 A schematic diagram showing the structure of the rear side of the air conditioner of the present invention; and

[0034] Fig.15 The front structural diagram of the air conditioner of the present invention is shown.

[0035] The above drawings include the following reference numerals:

[0036] 1. Ventilation duct; 11. Induction duct; 12. Exhaust duct; 2. Switching structure; 21. Switching cavity; 22. Baffle assembly; 221. Wind shield; 2211. First wind shield; 2212. Second wind shield; 211. Sub-cavity; 2111. Induction sub-cavity; 2112. Exhaust sub-cavity; 23. Baffle; 231. Induction baffle; 232. Exhaust baffle; 24. Air duct vent; 241, induced air duct opening; 242, exhaust air duct opening; 3, fan component; 31, connecting air vent; 311, first connecting opening; 312, second connecting opening; 32, exhaust fan; 33, induced air fan; 4, filter component; 5, supply air duct; 6, transition air duct; 7, casing; 71, air inlet; 72, exhaust outlet; 73, induced air outlet; 74, fresh air outlet; 10, fresh air system. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] like Figures 1 to 15As shown, the fresh air system of this embodiment includes: a plurality of ventilation ducts 1; a switching structure 2, the switching structure 2 has a switching cavity 21 for communicating with the plurality of ventilation ducts 1 and a baffle assembly 22 arranged in the switching cavity 21, at least part of the baffle assembly 22 is movably arranged so that the baffle assembly 22 has a separation state for dividing the switching cavity 21 into a plurality of sub-cavities 211 and a avoidance state for making at least two of the plurality of sub-cavities 211 communicate with each other, and the plurality of sub-cavities 211 are connected with the plurality of ventilation ducts 1 one by one; a plurality of fan components 3, the plurality of fan components 3 are arranged one by one with the plurality of sub-cavities 211, and the switching structure 2 is provided with a plurality of connecting vents 31 for connecting each sub-cavity 211 with the corresponding fan components 3. With the above arrangement, the fresh air system is provided with a plurality of fan components 3, and the plurality of fan components 3 can not only realize the functions of introducing outdoor fresh air and exhausting indoor air, but also realize multiple air ducts to increase the amount of fresh air introduced. Furthermore, by providing the baffle assembly 22 to control the flow direction of the airflow, the fresh air system has multiple working modes, thereby solving the problem of low efficiency of improving indoor air quality in the air conditioner with fresh air function in the prior art.

[0039] Specifically, the fresh air system of this embodiment includes: a plurality of ventilation ducts 1, a switching structure 2 and a plurality of fan components 3; the function of the ventilation duct 1 is to pass the wind in the fresh air system into the room, or to introduce fresh air from the outside. The switching structure 2 has a switching cavity 21 for communicating with the plurality of ventilation ducts 1 and a baffle assembly 22 arranged in the switching cavity 21, at least part of the baffle assembly 22 is movably arranged so that the baffle assembly 22 has a separation state for dividing the switching cavity 21 into a plurality of sub-cavities 211 and a avoidance state for making at least two of the plurality of sub-cavities 211 communicate with each other, and the plurality of sub-cavities 211 are connected with the plurality of ventilation ducts 1 in a one-to-one correspondence, so that the state of the switching cavity 21 is controlled by the baffle assembly 22, and the flow state of the airflow passing through the ventilation duct 1 is controlled. The plurality of fan components 3 are arranged in a one-to-one correspondence with the plurality of sub-cavities 211, and the switching structure 2 is provided with a plurality of connecting vents 31 for connecting each sub-cavity 211 with the corresponding fan component 3. In this way, the airflow from the outside is passed into the room in sequence through the ventilation duct 1, the switching cavity 21 and the fan component 3. Or the airflow in the room is passed into the room in sequence through the fan component 3, the switching cavity 21 and the ventilation duct 1.

[0040] In order to improve the air inlet and outlet efficiency of the fresh air system, in the fresh air system of this embodiment, Figure 2As shown, the baffle assembly 22 includes a plurality of wind shields 221, and the plurality of wind shields 221 are arranged one by one corresponding to the plurality of connecting air openings 31, and each wind shield 221 can be movably arranged, so that when the baffle assembly 22 is in the avoidance state, each wind shield 221 shields at least part of the corresponding connecting air opening 31. In this way, by arranging a plurality of connecting air openings 31, the effect of multiple air openings for air induction and exhaust can be achieved.

[0041] In order to improve the performance of the fresh air system inlet and outlet, Figure 2 As shown, in the fresh air system of this embodiment, the switching structure 2 is provided with a plurality of air duct openings 24, and the plurality of air duct openings 24 are provided one-to-one with the plurality of ventilation ducts 1, so that each ventilation duct 1 is connected with the switching cavity 21 through the corresponding air duct opening 24; the switching structure 2 also includes a plurality of shielding plates 23, and the plurality of shielding plates 23 are provided one-to-one with the plurality of air duct openings 24, so that the corresponding air duct openings 24 are shielded or avoided by each shielding plate 23. In this way, by providing a plurality of air duct openings 24, the effect of multiple air inlet and outlet is achieved.

[0042] In the fresh air system of this embodiment, Figure 2 As shown, a plurality of air duct openings 24 are arranged on the first side wall of the switching cavity 21, and a plurality of connecting air openings 31 are arranged on the second side wall of the switching cavity 21. Through the above arrangement, the air duct openings 24 and the switching cavity 21 are located on different side walls, so that the structure of the fresh air system is more reasonable and the airflow in the switching cavity 21 flows more smoothly.

[0043] like Figure 2 As shown, in the fresh air system of this embodiment, the fresh air system further includes: a filter component 4, which is arranged between the switching structure 2 and at least one fan component 3 among the plurality of fan components 3, so that the airflow flowing out of the switching structure 2 flows into the at least one fan component 3 after being filtered by the filter component 4. Through the above arrangement, the fresh air structure has the effect of filtering air, and the performance of the fresh air structure is increased.

[0044] In the fresh air system of this embodiment, Figure 2 As shown, multiple ventilation ducts 1 include an induced draft duct 11 and an exhaust duct 12, and multiple fan components 3 include an induced draft fan 33 and an exhaust fan 32; the induced draft duct 11 is connected to the induced draft fan 33 through a switching structure 2, so that the airflow introduced by the induced draft duct 11 is transported to the room through the induced draft fan 33; the exhaust duct 12 is connected to the exhaust fan 32 through a switching structure 2, so that the airflow introduced by the exhaust fan 32 is discharged to the outside through the exhaust duct 12. Through the above arrangement, the fresh air structure has the ability to induce and exhaust air. And in the process of inducing and exhausting air, the fresh air structure can control the airflow through the switching structure to achieve better effects of inducing and exhausting air.

[0045] In order to achieve the effect of air induction and ventilation, and control the airflow during the air induction and exhaust process, such as Figure 2 As shown, in the fresh air system of this embodiment, the fresh air system also includes: an air supply duct 5, the air outlet of the induced draft fan 33 is connected to the air supply duct 5; and / or a transition duct 6, the air outlet of the exhaust fan 32 is connected to the switching structure 2 through the transition duct 6.

[0046] In the fresh air system of this embodiment, Figure 2 As shown, the baffle assembly 22 includes a first air baffle 2211 and a second air baffle 2212. When the baffle assembly 22 is in a separated state, the first air baffle 2211 and the second air baffle 2212 are both in a first separated position, so that the plurality of sub-cavities 211 include an independently arranged air induction sub-cavity 2111 and an exhaust sub-cavity 2112; wherein the air induction sub-cavity 2111 is connected to the air induction fan 33, and the exhaust sub-cavity 2112 is connected to the exhaust fan 32. In this way, the baffle assembly 22 divides the sub-cavity 211 into the air induction sub-cavity 2111 and the exhaust sub-cavity 2112, so that the air induction sub-cavity 2111 is used for the air induction function, and the exhaust sub-cavity 2112 is used for the exhaust function. Therefore, the air induction sub-cavity 2111 and the exhaust sub-cavity 2112 of the fresh air system do not affect each other, thereby ensuring the function of the fresh air system.

[0047] like Figure 2 As shown, in the fresh air system of this embodiment, the multiple connecting air openings 31 include a first connecting opening 311 for connecting the induced draft fan 33 and the switching cavity 21 and a second connecting opening 312 for connecting the exhaust fan 32 and the switching cavity 21; when the baffle assembly 22 is in the avoidance state, the first wind shield 2211 and the second wind shield 2212 have a double-tube induced draft shielding position, a double-tube exhaust shielding position, and an internal circulation shielding position. The details are as follows:

[0048] like Figure 5 , Figure 6 As shown, when the first wind shield 2211 and the second wind shield 2212 are in the double-tube air induction shielding position, the first wind shield 2211 and the second wind shield 2212 jointly shield the second communication opening 312, so that the second communication opening 312 is closed. At this time, the airflow enters the switching cavity 21 through the first communication opening 311, and all the airflow is used for air induction through the air induction fan 33. In this way, the efficiency of air induction of the fresh air system is maximized.

[0049] like Figure 7 , Figure 8As shown, when the first wind shield 2211 and the second wind shield 2212 are in the double-tube exhaust shielding position, the first wind shield 2211 and the second wind shield 2212 jointly shield the first communication opening 311, so that the first communication opening 311 is closed. At this time, the airflow enters the switching cavity 21 through the air duct opening 24, and all the airflow is used for exhaust through the exhaust fan 32. In this way, the exhaust efficiency of the fresh air system is maximized.

[0050] like Fig. 9 , Fig.10 When the first wind shield 2211 and the second wind shield 2212 are in the internal circulation shielding position, the first wind shield 2211 shields the first communication opening 311, and the second wind shield 2212 shields the second communication opening 312, so as to respectively shield a part of the opening of the first communication opening 311 and a part of the opening of the second communication opening 312. At this time, the airflow exhausted by the exhaust fan 32 passes through the switching cavity 21 and is reintroduced by the induced air fan 33, thereby achieving the purpose of internal circulation of airflow.

[0051] In the fresh air system of this embodiment, Figure 2 As shown, the switching structure 2 is provided with an induced air duct opening 241 for communicating with the induced air duct 11 and an exhaust air duct opening 242 for communicating with the exhaust air duct 12; the switching structure 2 includes an induced air shielding plate 231 for opening or closing the induced air duct opening 241 and an exhaust air shielding plate 232 for opening or closing the exhaust air duct opening 242.

[0052] The fresh air system includes single-pipe air induction mode, single-pipe exhaust mode, double-pipe air induction mode, double-pipe exhaust mode and internal circulation mode. The details are as follows:

[0053] like Figure 1 , Figure 2 When the fresh air system is in the single-duct induced air mode, the baffle assembly 22 is in a separated state, the induced air shielding plate 231 is in an open state, the induced air fan 33 is in a working state, and the exhaust air fan 32 is in a non-working state. At this time, the fresh air system realizes the working mode of introducing outdoor fresh air. The airflow direction is shown by the arrow.

[0054] like Figure 3 , Figure 4 When the fresh air system is in the single-pipe exhaust mode, the baffle assembly 22 is in a separated state, the exhaust shielding plate 232 is in an open state, the exhaust fan 32 is in a working state, and the induced air fan 33 is in a non-working state. At this time, the fresh air system realizes the working mode of exhausting indoor dirty air. The airflow direction is shown by the arrow.

[0055] like Figure 5 , Figure 6When the fresh air system is in the double-pipe induction mode, the first wind shield 2211 and the second wind shield 2212 are in the double-pipe induction shielding position, the induction shielding plate 231 and the exhaust shielding plate 232 are both in the open state, the induction fan 33 is in the working state, and the exhaust fan 32 is in the non-working state. At this time, the fresh air system realizes the working mode of double-pipe introduction of outdoor fresh air, which can increase the amount of fresh air introduced compared with the single-pipe induction. The airflow direction is shown by the arrow.

[0056] like Figure 7 , Figure 8 When the fresh air system is in the double-pipe exhaust mode, the first wind shield 2211 and the second wind shield 2212 are in the double-pipe exhaust shielding position, the induced air shielding plate 231 and the exhaust air shielding plate 232 are both in the open state, the exhaust fan 32 is in the working state, and the induced air fan 33 is in the non-working state. At this time, the fresh air system realizes the working mode of double-pipe exhaust of indoor dirty air, which can increase the air volume of indoor dirty air compared with single-pipe exhaust. The airflow direction is shown by the arrow.

[0057] like Fig. 9 , Fig.10 When the fresh air system is in the internal circulation mode, the first wind shield 2211 and the second wind shield 2212 are in the internal circulation shielding position, the induced air shielding plate 231 and the exhaust air shielding plate 232 are both in the closed state, and the induced air fan 33 and the exhaust air fan 32 are both in the working state. At this time, the airflow discharged by the exhaust air fan 32 passes through the switching cavity 21 and the filter component 4, and is introduced again by the induced air fan 33. At this time, the indoor air is cleaned and filtered through the internal circulation. The airflow direction is shown by the arrow.

[0058] like Figures 11 to 15 As shown, the air conditioner of this embodiment includes a casing 7 and a fresh air system 10 arranged in the casing 7, and the fresh air system 10 is the fresh air system mentioned above.

[0059] In the air conditioner of this embodiment, there is an air inlet 71 on the side of the housing 7, and the air conditioner introduces indoor air into the fresh air system through the air inlet 71. There are an exhaust port 72 and an air inlet 73 on the rear side of the air conditioner housing, and the air conditioner exhausts indoor air to the outside through the exhaust port 72, and introduces outdoor air into the fresh air system through the air inlet 73. There is a fresh air port 74 on the front side of the air conditioner housing, and the air conditioner sends fresh air into the room through the fresh air port 74.

[0060] In the air conditioner of this embodiment, the fresh air system 10 is located below the main air duct, is independent of the main air duct, is not affected by the main air duct, and can operate independently.

[0061] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0062] The fresh air system of the present invention comprises: a plurality of ventilation ducts 1, a switching structure 2 and a plurality of fan components 3, the switching structure 2 having a switching cavity 21 for communicating with the plurality of ventilation ducts 1 and a baffle assembly 22 arranged in the switching cavity 21, at least part of the baffle assembly 22 being movably arranged so that the baffle assembly 22 has a separation state for dividing the switching cavity 21 into a plurality of sub-cavities 211 and a evasion state for making at least two of the plurality of sub-cavities 211 communicate with each other, the plurality of sub-cavities 211 being connected to the plurality of ventilation ducts 1 in a one-to-one correspondence; the plurality of fan components 3 being arranged in a one-to-one correspondence with the plurality of sub-cavities 211, the switching structure 2 being provided with a plurality of connecting vents 31 for connecting each sub-cavity 211 with the corresponding fan components 3. With the above arrangement, the fresh air system is provided with a plurality of fan components 3, which can not only realize the functions of introducing outdoor fresh air and exhausting indoor air, but also realize multiple air ducts to inlet air to increase the amount of fresh air introduced. Furthermore, by providing the baffle assembly 22 to control the flow direction of the airflow, the fresh air system has multiple working modes, thereby solving the problem of low efficiency of improving indoor air quality in the air conditioner with fresh air function in the prior art.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fresh air system, characterized in that: include: A plurality of ventilation ducts (1); A switching structure (2), the switching structure (2) comprising a switching cavity (21) for communicating with the plurality of ventilation ducts (1) and a baffle assembly (22) arranged in the switching cavity (21), at least part of the baffle assembly (22) being movably arranged so that the baffle assembly (22) has a separation state for dividing the switching cavity (21) into a plurality of sub-cavities (211) and a avoidance state for making at least two of the plurality of sub-cavities (211) communicate with each other, and the plurality of sub-cavities (211) are communicated with the plurality of ventilation ducts (1) in a one-to-one correspondence; A plurality of fan components (3), wherein the plurality of fan components (3) are arranged in one-to-one correspondence with the plurality of sub-cavities (211), and the switching structure (2) is provided with a plurality of connecting vents (31) for connecting each of the sub-cavities (211) with the corresponding fan components (3); The plurality of ventilation ducts (1) include an induced draft duct (11) and an exhaust duct (12); the plurality of fan components (3) include an induced draft fan (33) and an exhaust fan (32); the induced draft duct (11) is connected to the induced draft fan (33) via the switching structure (2), so that the airflow introduced by the induced draft duct (11) is transported to the room through the induced draft fan (33); the exhaust duct (12) is connected to the exhaust fan (32) via the switching structure (2), so that the airflow introduced by the exhaust fan (32) is discharged to the outside through the exhaust duct (12); The baffle assembly (22) comprises a first wind shield (2211) and a second wind shield (2212); when the baffle assembly (22) is in the separation state, the first wind shield (2211) and the second wind shield (2212) are both in a first separation position, so that the plurality of sub-cavities (211) include independently arranged air-inducing sub-cavities (2111) and air-exhausting sub-cavities (2112); wherein the air-inducing sub-cavity (2111) is in communication with the air-inducing fan (33), and the air-exhausting sub-cavity (2112) is in communication with the air-exhausting fan (32); The plurality of connecting air openings (31) include a first connecting opening (311) for connecting the induced draft fan (33) and the switching chamber (21) and a second connecting opening (312) for connecting the exhaust fan (32) and the switching chamber (21); when the baffle assembly (22) is in the avoidance state, the first wind shield (2211) and the second wind shield (2212) have a double-tube induced draft shielding position, a double-tube exhaust shielding position, and an internal circulation shielding position; When the first wind shield (2211) and the second wind shield (2212) are in the double-tube air induction shielding position, the first wind shield (2211) and the second wind shield (2212) jointly shield the second communication opening (312), so that the second communication opening (312) is closed; When the first wind shield (2211) and the second wind shield (2212) are in the double-tube exhaust shielding position, the first wind shield (2211) and the second wind shield (2212) jointly shield the first communication opening (311), so that the first communication opening (311) is closed; When the first wind shield (2211) and the second wind shield (2212) are in the internal circulation shielding position, the first wind shield (2211) shields the first connecting opening (311), and the second wind shield (2212) shields the second connecting opening (312), so as to respectively shield a portion of the opening of the first connecting opening (311) and a portion of the opening of the second connecting opening (312).

2. The fresh air system according to claim 1, characterized in that: The baffle assembly (22) comprises a plurality of wind shields (221), and the plurality of wind shields (221) are arranged in one-to-one correspondence with the plurality of connecting air openings (31). Each of the wind shields (221) can be movably arranged so that when the baffle assembly (22) is in the avoidance state, each of the wind shields (221) shields at least a portion of the corresponding connecting air opening (31).

3. The fresh air system according to claim 1, characterized in that: The switching structure (2) is provided with a plurality of air duct openings (24), and the plurality of air duct openings (24) are arranged in a one-to-one correspondence with the plurality of ventilation ducts (1), so that each of the ventilation ducts (1) is connected to the switching cavity (21) through the corresponding air duct opening (24); the switching structure (2) also includes a plurality of shielding plates (23), and the plurality of shielding plates (23) are arranged in a one-to-one correspondence with the plurality of air duct openings (24), so that the corresponding air duct opening (24) is shielded or avoided by each of the shielding plates (23).

4. The fresh air system according to claim 3, characterized in that: The plurality of air duct openings (24) are arranged on a first side wall of the switching cavity (21), and the plurality of connecting air openings (31) are arranged on a second side wall of the switching cavity (21).

5. The fresh air system according to claim 1, characterized in that: The fresh air system also includes: A filter component (4), wherein the filter component (4) is arranged between the switching structure (2) and at least one fan component (3) among the plurality of fan components (3), so that the airflow flowing out of the switching structure (2) is filtered by the filter component (4) and then flows into the at least one fan component (3).

6. The fresh air system according to claim 1, characterized in that: The fresh air system also includes: an air supply duct (5), wherein the air outlet of the induced draft fan (33) is in communication with the air supply duct (5); and / or A transition air duct (6), wherein the air outlet of the exhaust fan (32) is connected to the switching structure (2) through the transition air duct (6).

7. The fresh air system according to claim 1, characterized in that: The switching structure (2) is provided with an air induction duct opening (241) for communicating with the air induction duct (11) and an exhaust duct opening (242) for communicating with the exhaust duct (12); the switching structure (2) comprises an air induction shielding plate (231) for opening or closing the air induction duct opening (241) and an exhaust shielding plate (232) for opening or closing the exhaust duct opening (242); The fresh air system includes a single-pipe air induction mode, a single-pipe exhaust mode, a double-pipe air induction mode, a double-pipe exhaust mode and an internal circulation mode; When the fresh air system is in the single-duct induced air mode, the baffle assembly (22) is in the separated state, the induced air shielding plate (231) is in the open state, the induced air fan (33) is in the working state, and the exhaust air fan (32) is in the non-working state; When the fresh air system is in the single-pipe exhaust mode, the baffle assembly (22) is in the separated state, the exhaust baffle (232) is in the open state, the exhaust fan (32) is in the working state, and the induced draft fan (33) is in the non-working state; When the fresh air system is in the double-pipe induced air mode, the first wind shield (2211) and the second wind shield (2212) are in the double-pipe induced air shielding position, the induced air shielding plate (231) and the exhaust air shielding plate (232) are both in an open state, the induced air fan (33) is in a working state, and the exhaust air fan (32) is in a non-working state; When the fresh air system is in the double-pipe exhaust mode, the first wind shield (2211) and the second wind shield (2212) are in the double-pipe exhaust shielding position, the induced air shielding plate (231) and the exhaust air shielding plate (232) are both in an open state, the exhaust fan (32) is in a working state, and the induced air fan (33) is in a non-working state; When the fresh air system is in the internal circulation mode, the first wind shield (2211) and the second wind shield (2212) are in the internal circulation shielding position, the induced air shielding plate (231) and the exhaust air shielding plate (232) are both in a closed state, and the induced air fan (33) and the exhaust air fan (32) are both in an operating state.

8. An air conditioner, comprising a casing (7) and a fresh air system (10) arranged in the casing (7), characterized in that: The fresh air system (10) is the fresh air system according to any one of claims 1 to 7.

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