Fresh air device and air conditioner

Abstract

The invention discloses a fresh air device, an air conditioner indoor unit and an air conditioner, the fresh air device is applied to the air conditioner, the fresh air device comprises a volute and a fresh air wheel, the volute is provided with a fresh air duct, a first air outlet and a second air outlet, the first air outlet and the second air outlet are communicated with the fresh air duct, and the fresh air duct comprises an air outlet section and a body section; the body section is used for containing the fresh air wheel, the first air outlet and the second air outlet are located in the air outlet section, the first air outlet is used for discharging air towards the first indoor direction, and the second air outlet is used for discharging air towards the second indoor direction. According to the technical scheme, through the arrangement mode of the multiple air outlets, fresh air in the fresh air duct is distributed to all the air outlets and then conveyed into a room in different directions, noise transmitted into the room is reduced, and the use experience of a user is improved.

Description

Technical Field

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

[0002] As living standards improve, consumers' requirements for multifunctional air conditioners are gradually increasing. For example, air conditioners with fresh air ventilation function are becoming more and more popular among consumers. In related technologies, the fresh air device installed in the air conditioner directly blows air into the room, and the fresh air device inevitably generates noise during operation, which easily causes a large amount of noise transmitted to the room, affecting the user experience. Summary of the invention

[0003] The main purpose of the present invention is to provide a fresh air device, which aims to divert the fresh air to each air outlet in the fresh air duct through a multi-air outlet setting, and then transport it to the room in different directions, thereby reducing the noise transmitted to the room and improving the user experience.

[0004] To achieve the above object, the present invention proposes a fresh air device, which is applied to an air conditioner and includes:

[0005] A volute and a fresh air impeller, the volute is provided with a fresh air duct and a first air outlet and a second air outlet connected to the fresh air duct, the fresh air duct comprises an air outlet section and a main body section, the main body section is used to accommodate the fresh air impeller, the first air outlet and the second air outlet are located in the air outlet section, the first air outlet is used to discharge air toward a first direction indoors, and the second air outlet is used to discharge air toward a second direction indoors.

[0006] Optionally, the fresh air device is further provided with a diversion structure, which is arranged in the air outlet section and is used to divert the fresh air in the fresh air duct so that the second air outlet becomes the main air outlet.

[0007] Optionally, the diversion structure is configured as a guide plate, and the guide plate extends along the air outlet section toward the second air outlet, so as to guide the fresh air to the second air outlet.

[0008] Optionally, the guide plate includes a guide side plate close to the first air outlet, the opposite sides of the guide side plate are respectively connected to the opposite side walls of the air outlet section, and the guide side plate is provided with a wind passing structure connected to the first air outlet.

[0009] Optionally, the air passing structure is configured as grille holes, and the porosity of the guide edge plate is 20% to 30%.

[0010] Optionally, the guide plate includes a guide side plate close to the first air outlet, and the guide side plate is spaced apart from the opposite side walls of the air outlet section at least at one end away from the first air outlet to form a first guide section and a second guide section on opposite sides of the guide side plate, respectively. The first air outlet is located in the first guide section, and the second air outlet is located in the second guide section. The minimum width of the first guide section is smaller than the minimum width of the second guide section.

[0011] Optionally, the other end of the guide edge plate is connected to a position adjacent to the second air outlet and the first air outlet, and the guide edge plate is provided with an air passing structure connected to the first air outlet.

[0012] Optionally, a plurality of guide plates are arranged at intervals in the width direction of the air outlet section.

[0013] Optionally, the air outlet section includes a mainstream section and a diversion section, the mainstream section and the diversion section are distributed along the axial direction of the fresh air impeller, the diversion structure includes a partition for separating the mainstream section and the diversion section, the partition is provided with a diversion port, the diversion section is connected with the main body section through the diversion port, and the diversion section and the mainstream section are respectively connected with the first air outlet and the second air outlet.

[0014] Optionally, the diversion structure further includes a guide plate, which is arranged at the mainstream section and extends along the mainstream section toward the second air outlet, and an end of the guide plate is opposite to the diversion outlet.

[0015] Optionally, an air outlet corner is provided at the connection point between the main flow section and the main body section, and the diversion port is arranged close to the air outlet corner.

[0016] Optionally, the air outlet section includes a main stream section and a tributary section, the main stream section and the tributary section intersect at an angle at one end close to the main section, the first air outlet is arranged at the end of the tributary section away from the main section, the second air outlet is arranged at the end of the main stream section away from the main section, and the diversion structure is arranged at the intersection of the main stream section and the tributary section.

[0017] Optionally, the branch stream section is connected to a side wall of the main stream section.

[0018] Optionally, a guide wall is provided on a side of the first air outlet adjacent to the second air outlet, and the diversion structure is configured as a diversion plate, and the diversion plate can slide along an extension direction of the guide wall.

[0019] Optionally, the diversion structure is configured as a diversion volute tongue, and the diversion volute tongue is connected between two adjacent guide walls of the main flow section and the branch flow section.

[0020] Optionally, a side wall of the air outlet section is provided with a plurality of noise reduction holes, and a sound-absorbing cover is provided on the outer side of the volute corresponding to the plurality of noise reduction hole covers.

[0021] Optionally, sound absorbing material is filled between the sound absorbing cover and the outer side wall of the volute.

[0022] The present invention further provides an air-conditioning indoor unit, which includes the fresh air device as described above, and the second air outlet is connected to the noise reduction air duct.

[0023] The present invention further provides an air conditioner, comprising the aforementioned fresh air device, wherein the second air outlet is connected to the noise reduction air duct.

[0024] The technical solution of the present invention arranges a first air outlet and a second air outlet on the volute, and when the fresh air impeller rotates, the fresh air in the main body section flows toward the air outlet section, and then the fresh air in the air outlet section can flow out from the first air outlet and the second air outlet respectively, so as to be discharged in a first direction indoors and in a second direction indoors. Here, the fresh air flowing out from the second air outlet diverts the air outlet of the fresh air device, so that the air volume of the fresh air flowing out of the first air outlet is reduced, and the first air outlet discharges air in the first direction indoors, and the noise brought in the first direction is also reduced accordingly, and the fresh air flowing out from the second air outlet discharges air in the second direction indoors, and the noise brought in the second direction is also reduced accordingly. Compared with the air discharge through a single air outlet and the noise gathered in a single direction, the present solution reduces the noise transmitted to the room by the fresh air device, and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 This is a structural schematic diagram of an embodiment of a fresh air device of the present invention;

[0027] Figure 2 for Figure 1 Exploded view of the fresh air device;

[0028] Figure 3 for Figure 1 A cross-sectional schematic diagram of a fresh air device;

[0029] Figure 4 It is a structural schematic diagram of another embodiment of the fresh air device of the present invention;

[0030] Figure 5for Figure 4 Exploded view of the fresh air device;

[0031] Figure 6 This is a structural schematic diagram of another embodiment of the fresh air device of the present invention;

[0032] Figure 7 for Figure 6 Exploded view of the fresh air device;

[0033] Figure 8 for Figure 6 A cross-sectional schematic diagram of a fresh air device;

[0034] Fig. 9 for Figure 6 A schematic diagram of another cross section of the fresh air device;

[0035] Fig.10 for Figure 1 , Figure 4 or Figure 6 A front view of the fresh air device in FIG.

[0036] Fig.11 This is a structural schematic diagram of another embodiment of the fresh air device of the present invention;

[0037] Fig.12 for Fig.11 Exploded view of the fresh air device;

[0038] Fig.13 for Fig.11 A cross-sectional schematic diagram of a fresh air device;

[0039] Fig.14 for Fig.11 A front view of the fresh air device;

[0040] Fig.15 This is a structural schematic diagram of another embodiment of the fresh air device of the present invention;

[0041] Fig.16 for Fig.15 Exploded view of the fresh air device;

[0042] Fig.17 for Fig.15 A cross-sectional schematic diagram of a fresh air device in one state;

[0043] Fig.18 for Fig.15 A cross-sectional schematic diagram of the fresh air device in another state;

[0044] Fig.19 for Fig.15 Front view of the fresh air device.

[0045] Description of Figure Numbers:

[0046] Label name Label name 100 Snail 110 body segment 120 Air outlet section 121 The first diversion section 122 The second diversion section 123 Mainstream segment 124 Diversion section 125 Main stream section 126 Tributary 130 First air outlet 140 Second air outlet 150 Air outlet corner 160 Guide wall 170 Noise reduction hole 180 Air Inlet 200 Deflector 210 Guide edge plate 211 Grille holes 212 Passing vent 300 Partition 310 Diverter port 400 Dividing the snail tongue 500 Manifold 600 Fresh air impeller 700 Sound absorbing cover

[0047] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0050] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0051] The invention provides a fresh air device.

[0052] In the embodiment of the present invention, please refer to Figures 1 to 19 The fresh air device is applied to an air conditioner, the air conditioner includes a noise reduction air duct, and the fresh air device includes:

[0053] The volute 100 and the fresh air impeller 600, the volute 100 is provided with a fresh air duct and a first air outlet 130 and a second air outlet 140 connected to the fresh air duct, the fresh air duct includes an air outlet section 120 and a main body section 110, the main body section 110 is used to accommodate the fresh air impeller 600, the first air outlet 130 and the second air outlet 140 are located in the air outlet section 120, the first air outlet 130 is used to discharge air toward a first direction indoors, and the second air outlet 140 is used to discharge air toward a second direction indoors.

[0054] The technical solution of the present invention is to set a first air outlet 130 and a second air outlet 140 on the volute 100, and the second air outlet 140 is connected to the noise reduction air duct. When the fresh air impeller 600 rotates, the fresh air from the main body section 110 flows toward the air outlet section 120, and then the fresh air in the air outlet section 120 can flow out from the first air outlet 130 and the second air outlet 140 respectively, so as to be discharged in a first direction indoors and a second direction indoors. Here, the fresh air flowing out from the second air outlet 140 diverts the air outlet of the fresh air device, so that the air volume of the fresh air flowing out of the first air outlet 130 is reduced, and the first air outlet 130 discharges air in the first direction indoors, and the noise brought in the first direction is also reduced accordingly, and the fresh air flowing out from the second air outlet 140 discharges air in the second direction indoors, and the noise brought in the second direction is also reduced accordingly. Compared with the air discharge through a single air outlet and the noise converging in a single direction, the present solution reduces the noise transmitted to the room by the fresh air device, and improves the user experience.

[0055] Without loss of generality, the second direction can be in many cases. First, the air conditioner includes a noise reduction air duct. The second air outlet 140 first flows into the noise reduction air duct in the air conditioner, and then is discharged into the room along the noise reduction air duct. This part of the fresh air collides with the side wall of the air duct in the noise reduction air duct to reduce the energy of the noise, thereby reducing the noise of this part of the fresh air; second, the second air outlet 140 is arranged upward, and the second direction is to discharge air upward. The flow distance and time of the second air outlet 140 in the fresh air duct are extended, and the upward discharge can further increase the distance that the noise is transmitted to the user, thereby achieving the effect of noise reduction; third, there will inevitably be obstacles in the second direction and the first direction, and compared with a single air outlet, the number of obstacles is greater, so that the probability of the fresh air colliding with the obstacles during the flow is greater, thereby reducing the energy of the noise and achieving the effect of noise reduction.

[0056] In addition, the volute 100 is provided with a first air outlet 130 and a second air outlet 140, and the air outlet area of ​​the fresh air device will be increased, so that the wind radius of the fresh air device is wider, providing users with more air outlet options. It should be noted that the noise reduction air duct can be a heat exchange air duct in the air conditioner, or it can be an additional air duct connected to the second air outlet 140 in the air conditioner.

[0057] Specifically, in the present embodiment, the first air outlet 130 is arranged on the front side of the volute 100, that is, on the front side of the air conditioner, and the fresh air device is located at the lower part of the air conditioner. The second air outlet 140 is arranged on the upper side of the volute 100, and the air inlet 180 of the volute 100 is arranged on the rear side thereof, that is, on the rear side of the air conditioner. It can be understood that the first air outlet 130 directly discharges air into the room, and part of the fresh air is diverted to the second air outlet 140 to reduce the air outlet volume of the first air outlet 130, and the noise of the fresh air flowing out of the second air outlet 140 can be weakened to reduce the noise of the fresh air flowing out of the fresh air device.

[0058] Further, in this embodiment, please continue to refer to Figures 1 to 19 The fresh air device is also provided with a diversion structure, which is provided at the air outlet section 120 and is used to divert the fresh air in the fresh air duct so that the second air outlet 140 is the main air outlet. It can be understood that, according to the different shapes of the volute 100, along the air outlet direction of the air outlet section 120, the air outlet section 120 can transport most of the fresh air to the first air outlet 130 or the second air outlet 140, or transport the same amount to the first air outlet 130 and the second air outlet 140. In this embodiment, the diversion structure is provided at the air outlet section 120, which can divert most of the fresh air to the second air outlet 140, while also ensuring that a small part of the fresh air can flow out from the first air outlet 130. While improving the effect of reducing the noise carried by the fresh air, it also allows fresh air to flow out of both the first air outlet 130 and the second air outlet 140, thereby ensuring the air outlet area of ​​the fresh air device. Of course, in other embodiments, by setting the angle between the first air outlet 130 and the second air outlet 140 , the air outlet duct may not be provided with a diversion structure, under the premise that most of the fresh air can flow along the air outlet section 120 to the second air outlet 140 , and a small amount of fresh air can also flow out from the first air outlet 130 .

[0059] In one embodiment, please refer to Figures 1 to 5 , the diversion structure is provided as a guide plate 200, and the guide plate 200 extends along the air outlet section 120 toward the second air outlet 140, and is used to guide the fresh air to the second air outlet 140. It can be understood that the extension direction of the guide plate 200 is parallel to the extension direction of the air outlet section 120. When the fresh air flows in the air outlet section 120, it is guided by the guide plate 200, and most of the fresh air can flow to the second air outlet 140 along the guide plate 200. Specifically, in this embodiment, the fresh air output by the body section 110 rotates nearly 90° and is opposite to the first air outlet 130. The guide plate 200 is arranged in an S shape, and its end corresponds to the connection point between the air outlet section 120 and the body section 110, so that most of the fresh air is guided to the second air outlet 140 to flow out, so as to ensure that the fresh air device can effectively reduce the output noise. Of course, in other embodiments, the guide plate 200 may also be configured as a straight plate to guide most of the fresh air to the second air outlet 140 .

[0060] Further, in this embodiment, please refer to Figure 4 and Figure 5 The guide plate 200 includes a guide side plate 210 near the first air outlet 130, and the opposite sides of the guide side plate 210 are respectively connected to the opposite side walls of the air outlet section 120, and the guide side plate 210 is provided with a wind passing structure connected to the first air outlet 130. It can be understood that the guide side plate 210 is opposite to the first air outlet 130, such as Figure 4 As shown, the edge of the guide plate 210 is connected to the inner peripheral wall of the air outlet section 120, so that the guide plate 210 has a blocking effect on the first air outlet 130 and a guiding effect on the second air outlet 140. When the fresh air flows to the guide plate 210, most of the fresh air flows toward the second air outlet 140 under the guiding effect of the guide plate 210, and a small part of the fresh air can pass through the air passing structure on the guide plate 210 and flow toward the first air outlet 130, thereby effectively reducing the noise output by the fresh air device. Of course, in other embodiments, the guide plate 210 is provided with an air passing gap between the inner side wall of the air outlet section 120, or the guide plate 210 can be rotated so that the first air outlet 130 and the air outlet section 120 can be partially connected.

[0061] Specifically, in this embodiment, please continue to refer to Figure 4 and Figure 5 , the air flow structure is set as a grille hole 211, and the porosity of the guide plate 210 is 20% to 30%. It can be understood that after the fresh air encounters the obstruction of the guide plate 210, the fresh air will flow in two parts, one part flows along the guide plate 200 to the second air outlet 140, and the other part flows through the grille hole 211 to the first air outlet 130. In this way, the porosity of the guide plate 210 is set to 20% to 30%, which can ensure that most of the fresh air flows out from the second air outlet 140, and can also ensure that a small part of the fresh air still flows out of the first air outlet 130. Specifically, the porosity of the guide plate 210 can be set to 20%, 25% or 30%. Of course, in other embodiments, the porosity of the guide plate 210 can also be set to 15% or 35%, or the air flow structure is set as an air outlet, and the area of ​​the air outlet relative to the guide plate 200 accounts for 20% to 30%.

[0062] In another embodiment, please refer to Figures 1 to 3The guide plate 200 includes a guide side plate 210 close to the first air outlet 130. The guide side plate 210 is spaced apart from the opposite side walls of the air outlet section 120 at least at one end away from the first air outlet 130, so as to form a first guide section 121 and a second guide section 122 on opposite sides of the guide side plate 210, respectively. The first air outlet 130 is located in the first guide section 121, and the second air outlet 140 is located in the second guide section 122. The minimum width of the first guide section 121 is smaller than the minimum width of the second guide section 122. It can be understood that the first air outlet 130 and the second air outlet 140 are located on opposite sides of the guide side plate 210, so that the fresh air flowing out from the main body section 110 can flow into the first guide section 121 and the second guide section 122 respectively. Since the minimum width of the first guide section 121 is smaller than the minimum width of the second guide section 122, at the same time, the amount of fresh air flowing in the first guide section 121 is less than the amount of fresh air flowing in the second guide section 122, thereby achieving the goal of guiding most of the fresh air to the second air outlet 140. Specifically, the inner diameter of the air outlet section 120 gradually increases from the direction away from the main body section 110, the first air outlet 130 is opposite to the air outlet direction of the air outlet section 120, and the second air outlet 140 forms an angle with the air outlet direction of the air outlet section 120. The minimum width of the first guide section 121 and the minimum width of the second guide section 122 are both located at the connection between the air outlet section 120 and the main body section 110. The inner diameter of the second guide section 122 gradually increases in the direction approaching the first air outlet 130, and the inner diameter of the first guide section 121 remains stable in the direction approaching the second air outlet 140. In this way, the first guide section 121 can ensure that a sufficient amount of fresh air flows toward the first air outlet 130, and the fresh air in the second guide section 122 can also flow stably toward the second air outlet 140 under the guiding effect of the guide side plate 210. Of course, in other embodiments, the guide edge plate 210 can be movable to adjust the minimum width of the first guide section 121 and the minimum width of the second guide section 122 to adjust the fresh air output of the second air outlet 140 to achieve dynamic noise reduction.

[0063] Further, in this embodiment, please continue to refer to Figures 1 to 3, the other end of the guide plate 210 is connected to the adjacent part of the second air outlet 140 and the first air outlet 130, and the guide plate 210 is provided with a wind-passing structure connected to the first air outlet 130. In this way, the fresh air in the second guide section 122 can also be guided to the first guide section 121 through the wind-passing structure, and then flow out from the first air outlet 130 to ensure the fresh air volume in the first guide section 121, thereby ensuring the stability of the air outlet area of ​​the fresh air device. Specifically, the wind-passing structure can be a grille hole or a wind-passing port 212, and its porosity is set according to the air volume distribution requirements, which can be 20%, 35%, 40% or 50%. Of course, in other embodiments, the guide plate 210 may not be provided with a wind-passing structure, provided that the ratio of the minimum width of the first guide section 121 to the minimum width of the second guide section 122 is in a suitable range.

[0064] In one embodiment, please refer to Figures 1 to 5 , multiple guide plates 200 are arranged at intervals in the width direction of the air outlet section 120. In this way, the guiding effect on the second air outlet 140 can be enhanced. At the same time, multiple guide plates 200 divide the air outlet section 120 into multiple sections. When the air outlet direction of the air outlet section 120 and the main section 110 is at an angle, multiple guide plates 200 can prevent the fresh air from vortexing when turning, thereby ensuring the smoothness of the fresh air flow in the air outlet section 120. Figures 1 to 3 The minimum width of the first guide section 121 is relatively small. The first guide section 121 is closer to the main section 110, and the second guide section 122 is farther away from the main section 110. A plurality of guide plates 200 are arranged in the second guide section 122, which can avoid the generation of eddy currents in the second guide section 122. In addition, the guide plates 200 in the second guide section 122 do not extend to the second air outlet 140. The end of the guide plate 200 is arranged relative to the wind passing structure on the guide side plate 210 to ensure the air volume of the first air outlet 130; corresponding to Figure 4 and Figure 5 A plurality of guide plates 200 are arranged on the opposite side of the guide side plate 210 and the second air outlet 140 to avoid vortex phenomenon when most of the fresh air flows toward the second air outlet 140, thereby ensuring the smoothness of the fresh air flowing in the air outlet section 120. In addition, the guide plates 200 of this part extend along the air outlet section 120 to the second air outlet 140, and a wind passing structure may or may not be set thereon.

[0065] In another embodiment, please refer to Figures 6 to 10The air outlet section 120 includes a mainstream section 123 and a diversion section 124. The mainstream section 123 and the diversion section 124 are distributed along the axial direction of the fresh air impeller 600. The diversion structure includes a partition 300 for separating the mainstream section 123 and the diversion section 124. The partition 300 is provided with a diversion port 310. The diversion section 124 is connected to the main body section 110 through the diversion port 310. The diversion section 124 and the mainstream section 123 are respectively connected to the first air outlet 130 and the second air outlet 140. It can be understood that the main flow section 123 and the main body section 110 are located on the same radial surface of the fresh air impeller 600. Thus, when the fresh air impeller 600 delivers the fresh air to the vicinity of the diversion port 310, the fresh air will be diverted into two parts, most of the fresh air will flow into the main flow section 123, and a small part of the fresh air will flow into the diversion section 124 through the diversion port 310, thereby discharging most of the fresh air from the second air outlet 140 to reduce the noise output by the fresh air device. Of course, in other embodiments, the partition 300 can be provided with a plurality of air holes, and the porosity of the partition 300 is controlled between 20% and 30%, so that part of the fresh air can flow through the air holes into the diversion section 124, thereby ensuring that the main flow section 123 flows most of the fresh air, and the diversion section 124 flows a small part of the fresh air.

[0066] Further, in this embodiment, please refer to Figures 6 to 10 The diversion structure also includes a guide plate 200, which is arranged in the mainstream section 123 and extends along the mainstream section 123 to the second air outlet 140, and the end of the guide plate 200 is opposite to the diversion port 310. Without loss of generality, the first air outlet 130 and the second air outlet 140 are respectively located on opposite sides of the guide plate 200, and the guide plate 200 can prevent the fresh air in the mainstream section 123 from vortexing to ensure the air outlet efficiency of the second air outlet 140. In addition, the end of the guide plate 200 is opposite to the diversion port 310, and the fresh air is hindered when encountering the guide plate 200, which will reduce the wind speed and change the wind direction. At this time, by utilizing the deceleration effect of the guide plate 200, part of the fresh air is more likely to enter the diversion section 124 through the diversion port 310, thereby ensuring the fresh air volume in the diversion section 124 and the air outlet area of ​​the fresh air device. Of course, in other embodiments, the main flow section 123 may not be provided with the guide plate 200 , and a guide protrusion is provided corresponding to the diversion port 310 to ensure that a small portion of fresh air can smoothly enter the diversion section 124 through the diversion port 310 .

[0067] Further, in this embodiment, please continue to refer to Figures 6 to 10, an air outlet corner 150 is provided at the connection point between the mainstream section 123 and the main body section 110, and the diversion port 310 is provided near the air outlet corner 150. It can be understood that at the air outlet corner 150, the wind direction of the fresh air will change, and the wind speed of the fresh air will also decrease, so that the fresh air can more easily enter the diversion section 124 from the diversion port 310, avoiding all the fresh air from flowing out from the second air outlet 140, thereby ensuring the air outlet volume of the first air outlet 130 and increasing the air outlet area of ​​the fresh air device. Of course, in other embodiments, the side edge of the diversion port 310 away from the main body section 110 is provided with a wind intercepting convex portion protruding toward the mainstream section 123, so as to intercept part of the fresh air from the mainstream section 123 and enter the diversion section 124, so as to ensure the air outlet volume of the first air outlet 130.

[0068] In another embodiment, please refer to Figures 11 to 19 The air outlet section 120 includes a main stream section 125 and a tributary section 126. The main stream section 125 and the tributary section 126 intersect at an angle at one end close to the main section 110. The first air outlet 130 is arranged at the end of the tributary section 126 away from the main section 110. The second air outlet 140 is arranged at the end of the main stream section 125 away from the main section 110. The diversion structure is arranged at the intersection of the main stream section 125 and the tributary section 126. It should be noted that the main stream section 125 and the branch stream section 126 are distributed in sequence in the rotation direction of the fresh air impeller 600, the main stream section 125 is connected with the main body section 110, and the branch stream section 126 can be connected with the main stream section 125 or the main body section 110. When the fresh air impeller 600 transports the fresh air to the intersection of the main stream section 125 and the branch stream section 126, under the action of the diversion structure, the fresh air will be diverted into two parts, most of the fresh air will flow into the main stream section 125, and a small part of the fresh air will flow into the branch stream section 126, so that most of the fresh air will be discharged from the second air outlet 140 to reduce the noise output by the fresh air device. Of course, in other embodiments, the diversion structure is arranged at the intersection of the main body section 110 and the air outlet section 120. When the fresh air impeller 600 transports the fresh air to the vicinity of the diversion structure, the fresh air will be broken up and diverted into two parts. Most of the fresh air flows toward the main stream section 125, and a small part of the fresh air first uses the main stream section 125 and then enters the branch stream section 126 from the connection between the branch stream section 126 and the main stream section 125, thereby achieving most of the fresh air flowing out of the second air outlet 140 to reduce the noise output by the fresh air device.

[0069] Further, in this embodiment, please refer to Figures 11 to 19, the tributary section 126 is connected to the side wall of the main section 125. That is, the main section 125 is connected to the main section 110, and the fresh air of the main section 110 first enters the main section 125. When the fresh air flows to the intersection of the main section 125 and the tributary section 126, the diversion structure diverts the fresh air, and most of the fresh air continues to flow along the main section 125, and a small part of the fresh air turns to flow into the tributary section 126. In this way, it can be ensured that the second air outlet 140 delivers most of the fresh air, and the first air outlet 130 delivers a small part of the fresh air. Under the condition of ensuring the wind radiation, the noise output by the fresh air device can also be effectively reduced. Of course, in other embodiments, the intersection of the tributary section 126 and the main section 125 is set at the connection between the air outlet section 120 and the main section 110.

[0070] In one embodiment, please refer to Figures 15 to 19 , a guide wall 160 is provided on one side of the first air outlet 130 adjacent to the second air outlet 140, and the diversion structure is provided as a diverter plate 500, which can slide along the extension direction of the guide wall 160. It should be noted that the extension direction of the guide wall 160 of the first air outlet 130 is the extension direction of the branch flow section 126, which is at an angle to the extension direction of the main flow section 125. In this way, the diverter plate 500 slides along the extension direction of the guide wall 160 to adjust the minimum width of the main flow section 125, that is, to adjust the opening of the second air outlet 140, thereby changing the ratio of the air volume of the first air outlet 130 to the second air outlet 140, and under the condition of ensuring the wind radiation, the noise output by the fresh air device can also be effectively reduced. In addition, when the splitter plate 500 slides back and forth along the extension direction of the guide wall 160, the reciprocating motion of the splitter plate 500 can continuously switch the ratio of the air volume of the first air outlet 130 and the second air outlet 140 to achieve the effect of sweeping the air, thereby stirring the air in the indoor environment, accelerating the air flow, and improving the ventilation efficiency. Of course, in other embodiments, the splitter plate 500 can be fixed on the guide wall 160.

[0071] In another embodiment, please refer to Figures 11 to 14 , the diversion structure is provided as a diversion volute 400, and the diversion volute 400 is connected between two adjacent guide walls 160 of the main stream section 125 and the branch section 126. It can be understood that the diversion volute 400 is provided on the side of the intersection of the main stream section 125 and the branch section 126 away from the main section 110, and reaches the minimum width of the main stream section 125 there, so that when the fresh air flows from the main stream section 125 to the diversion volute 400, the diversion volute 400 guides part of the fresh air into the branch section 126, so as to ensure the fresh air volume in the branch section 126, thereby ensuring the stability of the air outlet area of ​​the fresh air device.

[0072] In one embodiment, please refer to Figures 1 to 19, the side wall of the air outlet section 120 is provided with a plurality of noise reduction holes 170, and the outer side of the volute 100 is provided with a sound absorbing cover 700 corresponding to the plurality of noise reduction holes 170. It can be understood that when the fresh air flows through the air outlet section 120, the sound waves of the noise in the fresh air will penetrate along the noise reduction holes 170, and rub and collide with the side wall of the sound absorbing cover 700, converting the sound wave energy into heat energy, thereby reducing the noise. Of course, in other embodiments, the side wall of the air outlet section 120 can be provided with a plurality of fine grooves, and the groove walls of the grooves collide with the sound waves, converting the sound wave energy into heat energy, thereby reducing the noise.

[0073] For further information, please refer to Figures 1 to 19 , sound absorbing material is filled between the sound absorbing cover 700 and the outer wall of the volute 100. When the sound waves of the noise pass through the noise reduction hole 170 and collide with the sound absorbing material, the sound absorbing material will vibrate under the influence of the sound waves, and the inner and outer surfaces of the sound absorbing material will collide and rub with the sound waves to convert the energy of the sound waves into heat energy and the kinetic energy of the sound absorbing material, thereby achieving the effect of quickly reducing the energy of the sound waves to reduce noise. Specifically, in this embodiment, the sound absorbing material can be linen, sponge, petroleum fiber cotton or foam glass.

[0074] The present invention also proposes an air-conditioning indoor unit, which includes a fresh air device. The specific structure of the fresh air device refers to the above-mentioned embodiment. Since the present air-conditioning indoor unit adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here. Among them, the second air outlet 140 is connected to the noise reduction air duct to increase the flow guide length of part of the fresh air of the fresh air device, so as to weaken the transmission energy of the noise by using the noise reduction air duct, and achieve the effect of reducing the noise transmitted from the fresh air device. It should be noted that the noise reduction air duct can be the original heat exchange air duct of the air-conditioning indoor unit, or it can be the air duct connected to the second air outlet 140 added to the air-conditioning indoor unit.

[0075] The present invention also proposes an air conditioner, which includes a fresh air device. The specific structure of the fresh air device refers to the above embodiment. Since the air conditioner adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. Among them, the second air outlet 140 is connected to the noise reduction air duct to increase the flow guide length of part of the fresh air of the fresh air device, so as to weaken the transmission energy of the noise by using the noise reduction air duct, and achieve the effect of reducing the noise transmitted from the fresh air device. It should be noted that the noise reduction air duct can be the original heat exchange air duct in the air conditioner, or it can be the air duct connected to the second air outlet 140 added in the air conditioner. In addition, the air conditioner is set as an integrated air conditioner, and can also be set as a split air conditioner. If a split air conditioner is used, the fresh air device is arranged in the indoor unit of the air conditioner.

[0076] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A fresh air device, applied to an air conditioner, characterized in that: The fresh air device comprises: A volute and a fresh air impeller, the volute is provided with a fresh air duct and a first air outlet and a second air outlet connected to the fresh air duct, the fresh air duct comprises an air outlet section and a main body section, the main body section is used to accommodate the fresh air impeller, the first air outlet and the second air outlet are located in the air outlet section, the first air outlet is used to discharge air toward a first direction indoors, and the second air outlet is used to discharge air toward a second direction indoors.

2. The fresh air device according to claim 1, characterized in that: The fresh air device is further provided with a diversion structure, which is arranged at the air outlet section and is used to divert the fresh air in the fresh air duct so that the second air outlet becomes the main air outlet.

3. The fresh air device according to claim 2, characterized in that: The diversion structure is configured as a guide plate, and the guide plate extends along the air outlet section toward the second air outlet, and is used for guiding the fresh air to the second air outlet.

4. The fresh air device according to claim 3, characterized in that: The guide plate includes a guide side plate close to the first air outlet, the opposite sides of the guide side plate are respectively connected to the opposite side walls of the air outlet section, and the guide side plate is provided with a wind passing structure connected to the first air outlet.

5. The fresh air device according to claim 4, characterized in that: The air passing structure is configured as grille holes, and the porosity of the guide edge plate is 20% to 30%.

6. The fresh air device according to claim 3, characterized in that: The guide plate includes a guide side plate close to the first air outlet, and the guide side plate is spaced apart from the opposite side walls of the air outlet section at least at one end away from the first air outlet to form a first guide section and a second guide section on opposite sides of the guide side plate, respectively. The first air outlet is located in the first guide section, and the second air outlet is located in the second guide section. The minimum width of the first guide section is smaller than the minimum width of the second guide section.

7. The fresh air device according to claim 6, characterized in that: The other end of the guide edge plate is connected to the adjacent portion of the second air outlet and the first air outlet, and the guide edge plate is provided with an air passing structure connected to the first air outlet.

8. The fresh air device according to claim 3, characterized in that: A plurality of guide plates are arranged at intervals in the width direction of the air outlet section.

9. The fresh air device according to claim 2, characterized in that: The air outlet section includes a mainstream section and a diversion section, the mainstream section and the diversion section are distributed along the axial direction of the fresh air impeller, the diversion structure includes a partition for separating the mainstream section and the diversion section, the partition is provided with a diversion port, the diversion section is connected with the main body section through the diversion port, and the diversion section and the mainstream section are respectively connected with the first air outlet and the second air outlet.

10. The fresh air device according to claim 9, characterized in that: The flow diversion structure further includes a guide plate, which is arranged at the main flow section and extends along the main flow section toward the second air outlet, and an end of the guide plate is opposite to the diversion outlet; And / or, an air outlet corner is provided at the connection point between the main flow section and the main body section, and the diversion port is arranged close to the air outlet corner.

11. The fresh air device according to claim 2, characterized in that: The air outlet section includes a main stream section and a tributary section, the main stream section and the tributary section intersect at an angle at one end close to the main section, the first air outlet is arranged at one end of the tributary section away from the main section, the second air outlet is arranged at one end of the main stream section away from the main section, and the diversion structure is arranged at the intersection of the main stream section and the tributary section.

12. The fresh air device according to claim 11, characterized in that: The branch stream section is connected to the side wall of the main stream section.

13. The fresh air device according to claim 11, characterized in that: A guide wall is provided on a side of the first air outlet adjacent to the second air outlet, and the diversion structure is configured as a diversion plate, and the diversion plate can slide along an extension direction of the guide wall.

14. The fresh air device according to claim 11, characterized in that: The flow diversion structure is configured as a flow diversion volute tongue, and the flow diversion volute tongue is connected between two adjacent guide walls of the main flow section and the branch flow section.

15. The fresh air device according to any one of claims 1 to 14, characterized in that: The side wall of the air outlet section is provided with a plurality of noise reduction holes, and the outer side of the volute is provided with a sound absorbing cover corresponding to the plurality of noise reduction hole covers.

16. The fresh air device according to claim 15, characterized in that: The space between the sound absorbing cover and the outer side wall of the volute is filled with sound absorbing material.

17. An air conditioner indoor unit, characterized in that: The air conditioner indoor unit includes the fresh air device according to any one of claims 1 to 16, and the second air outlet is connected to the noise reduction air duct.

18. An air conditioner, characterized in that: The air conditioner comprises the fresh air device according to any one of claims 1 to 16, and the second air outlet is connected to the noise reduction air duct.

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