Fresh air system and air conditioner with it

Abstract

This invention provides a fresh air device and an air conditioner having the same. The fresh air device includes a fresh air housing with an air duct. The air duct has an air outlet section. A first end of the air outlet section is connected to the fan outlet of the fresh air device, and a second end of the air outlet section forms an air outlet for supplying fresh air. The fresh air device further includes at least one dividing section disposed within the air outlet section to divide the air outlet section into at least two air outlet channels. Each air outlet channel is connected to both the fan outlet and the air outlet, so that the fresh air flowing from the fan outlet flows through at least two air outlet channels and is discharged from the air outlet. The fresh air device of this invention solves the problem of excessive noise in existing fresh air devices.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more specifically, to a fresh air device and an air conditioner having the same. Background Technology

[0002] To meet people's demands for improved quality of life and better indoor air quality, fresh air functions have become a popular feature in the air conditioning industry in recent years. However, along with the increased air volume of fresh air systems, noise levels also increase, leading to a poorer user comfort experience.

[0003] Currently, methods to reduce fresh air noise include reducing the intensity of airflow vortices, such as designing the tail of the fan blades to be serrated, which can suppress laminar boundary layer separation at the tail of the blades and reduce the intensity of separation vortices, thereby achieving the purpose of fan noise reduction; for example, adding ventilation holes to the partition plate of the air inlet cavity to achieve the noise reduction effect; and adding a silencer device directly at the air inlet duct. Summary of the Invention

[0004] The main objective of this invention is to provide a fresh air device and an air conditioner having the same, in order to solve the problem of excessive noise in existing fresh air devices.

[0005] To achieve the above objectives, according to one aspect of the present invention, a fresh air device is provided, comprising a fresh air housing having an air duct having an air outlet section, a first end of the air outlet section being connected to the fan outlet of a fan of the fresh air device, and a second end of the air outlet section forming an air outlet for supplying fresh air. The fresh air device further comprises: at least one dividing portion disposed within the air outlet section to divide the air outlet section into at least two air outlet channels, each air outlet channel being connected to a fan outlet and an air outlet, such that the fresh air flowing out of the fan outlet flows through at least two air outlet channels and is discharged from the air outlet.

[0006] Furthermore, the fresh air housing includes a volute and a volute cover, the volute cover being connected to the volute to form an air duct, the volute having a first air duct wall and a second air duct wall disposed opposite to each other, the first air duct wall having a volute tongue; at least two air outlet channels are sequentially disposed in the direction from the first air duct wall to the second air duct wall.

[0007] Furthermore, in the direction from the first end to the second end of the air outlet section, the dividing part has a first dividing end and a second dividing end arranged sequentially; wherein, the second dividing end extends to the air outlet.

[0008] Furthermore, in the direction from the first end to the second end of the air outlet section, the segmentation part has a first segmentation end and a second segmentation end arranged sequentially; wherein, the first segmentation end has a first air guiding arc surface, and the radial direction of the first air guiding arc surface is parallel to the sequential arrangement direction of at least two air outlet channels; the second segmentation end is a plane.

[0009] Furthermore, in the direction from the first end to the second end of the air outlet section, the dividing section has a first dividing end and a second dividing end arranged sequentially; in the direction from the first dividing end to the second dividing end, the width of the dividing section gradually decreases.

[0010] Furthermore, the segment extends along the second preset direction to form a first end and a second end, both of which extend to the inner wall of the air duct; the sequential arrangement direction of at least two air outlet channels is perpendicular to the second preset direction.

[0011] Furthermore, the segment is integrally molded with the fresh air housing.

[0012] Furthermore, the fresh air device also includes a drive component disposed in the fresh air housing, the drive component being drivenly connected to the dividing section so that the dividing section is rotatably disposed within the air outlet section.

[0013] Furthermore, the fresh air device also includes a noise tester, which is installed in the fresh air housing. The noise tester is used to detect the noise of the fresh air device, and based on the noise detected by the noise tester, the drive unit drives the segment to rotate to the position where the noise of the fresh air device is minimized.

[0014] Furthermore, the fresh air unit also includes a CO2 concentration collector, which is installed in the fresh air housing. The CO2 concentration collector is used to detect the indoor CO2 concentration and adjust the fan speed according to the indoor CO2 concentration value collected by the CO2 concentration collector.

[0015] Furthermore, the fresh air device includes at least two dividing sections, both of which are disposed within the air outlet section to divide the air outlet section into multiple air outlet channels.

[0016] Furthermore, the dividing section is provided with multiple connecting holes, which are spaced apart, and each connecting hole is used to connect the air outlet channels on both sides of the dividing section.

[0017] According to another aspect of the present invention, an air conditioner is provided, including a housing and the aforementioned fresh air device, wherein the fresh air device is disposed within the housing.

[0018] According to the technical solution of this invention, the fresh air device includes a fresh air housing and at least one dividing section. The fresh air housing has an air duct, which has an air outlet section. The first end of the air outlet section is connected to the fan outlet of the fresh air device's fan, and the second end of the air outlet section forms an air outlet for supplying fresh air. Fresh air flowing from the fan outlet flows from the first end to the second end of the air outlet section. The dividing section is disposed within the air outlet section to divide the air outlet section into at least two air outlet channels. The two ends of each air outlet channel are respectively connected to the fan outlet and the air outlet, so that the fresh air flowing from the fan outlet is discharged after passing through the air outlet channel and the air outlet. By providing the dividing section within the air outlet section of the fresh air device, part of the swirling airflow of the fan impeller can be suppressed, thereby changing the frequency of local vortex shedding within the air duct, thus weakening the resonance effect of the air duct and the fan, achieving the effect of reducing noise and improving user comfort. Therefore, the fresh air device of this invention solves the problem of high noise levels in existing fresh air devices. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0020] Figure 1 A schematic diagram of the volute and the partition section of an embodiment of the fresh air device according to the present invention is shown;

[0021] Figure 2 An exploded view of an embodiment of the fresh air device according to the present invention is shown;

[0022] Figure 3 A schematic diagram of an embodiment of an air conditioner according to the present invention is shown;

[0023] Figure 4 A flowchart of an embodiment of the fresh air device according to the present invention is shown;

[0024] Figure 5 A schematic diagram of another embodiment of the fresh air device according to the present invention is shown;

[0025] Figure 6 A schematic diagram of a segment of another embodiment of the fresh air device according to the present invention is shown.

[0026] The above figures include the following reference numerals:

[0027] 3. Motor cover; 4. Air inlet baffle motor; 5. Filter screen; 6. Fixing bracket; 7. Sealing cover; 8. Air inlet baffle; 9. Crankshaft; 10. Fresh air housing; 11. Air duct; 12. Air outlet section; 121. Air outlet channel; 13. Air outlet; 14. Volute; 141. First air duct wall; 1411. Volute tongue; 142. Second air duct wall; 15. Volute cover; 20. Fan; 30. Dividing section; 31. First dividing end; 32. Second dividing end; 311. First air guide arc surface; 321. Plane; 40. Driving component; 70. Housing; 80. Fresh air device. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] This invention provides a fresh air device 80, please refer to... Figures 1 to 6 The device includes a fresh air housing 10, which has an air duct 11 and an air outlet section 12. The first end of the air outlet section 12 is connected to the fan outlet of the fan 20 of the fresh air device, and the second end of the air outlet section 12 forms an air outlet 13 for supplying fresh air. The fresh air device also includes at least one dividing section 30, which is disposed in the air outlet section 12 to divide the air outlet section 12 into at least two air outlet channels 121. Each air outlet channel 121 is connected to the fan outlet and the air outlet 13, respectively, so that the fresh air flowing out of the fan outlet flows through at least two air outlet channels 121 and is discharged from the air outlet 13.

[0032] The fresh air device of the present invention includes a fresh air housing 10 and at least one dividing section 30. The fresh air housing 10 has an air duct 11, and the air duct 11 has an air outlet section 12. The first end of the air outlet section 12 is connected to the fan outlet of the fan 20 of the fresh air device, and the second end of the air outlet section 12 forms an air outlet 13 for supplying fresh air. Fresh air flowing out of the fan outlet flows from the first end of the air outlet section to the second end of the air outlet section 12. The dividing section 30 is disposed in the air outlet section 12 to divide the air outlet section 12 into at least two air outlet channels. 121, each air outlet duct 121 is connected at both ends to the fan outlet and the air outlet 13, respectively, so that the fresh air flowing from the fan outlet is discharged after passing through the air outlet duct 121 and the air outlet 13. A dividing section 30 is provided within the air outlet section 12 of the fresh air device to suppress some of the swirling airflow of the fan 20 impeller, thereby changing the frequency of local vortex shedding within the air duct 11, and thus weakening the resonance effect between the air duct 11 and the fan 20, thereby reducing noise and improving user comfort. Therefore, the fresh air device of the present invention solves the problem of high noise levels in existing fresh air devices.

[0033] In this embodiment, the fresh air housing 10 includes a volute 14 and a volute cover 15. The volute cover 15 is connected to the volute 14 to form an air duct 11. The volute 14 has a first air duct wall 141 and a second air duct wall 142 disposed opposite to each other. The first air duct wall 141 has a volute tongue 1411. At least two air outlet channels 121 are arranged sequentially from the first air duct wall 141 to the second air duct wall 142.

[0034] Specifically, the fresh air housing 10 includes a volute 14 and a volute cover 15. The volute cover 15 and the volute 14 cooperate to form an air duct 11. The air duct 11 has an air outlet section 12. The first end of the air outlet section 12 is connected to the fan outlet of the fan 20 of the fresh air device, and the second end of the air outlet section 12 forms an air outlet 13 for supplying fresh air. The fresh air flowing out of the fan outlet flows from the first end of the air outlet section to the second end of the air outlet section 12. The volute 14 has a first air duct wall 141 and a second air duct wall 142 arranged opposite to each other. The first air duct wall 141 has a volute tongue 1411. At least two air outlet channels 121 are arranged sequentially from the first air duct wall 141 to the second air duct wall 142, which further suppresses the swirling airflow of the impeller, thereby changing the frequency of local vortex shedding in the volute 14, and thus weakening the resonance effect of the air duct 11 and the fan 20, so as to reduce noise.

[0035] Specifically, the dividing part 30 is connected to the volute 14 and protrudes from the inner wall of the volute 14.

[0036] In this embodiment, the fresh air device has a first dividing end 31 and a second dividing end 32 arranged sequentially in the direction from the first end to the second end of the air outlet section 12; wherein the second dividing end 32 extends to the air outlet 13.

[0037] Specifically, the first end of the air outlet section 12 is connected to the fan outlet of the fan 20 of the fresh air device, and the second end of the air outlet section 12 forms an air outlet 13 for supplying fresh air. The fresh air flowing out of the fan outlet flows from the first end of the air outlet section to the second end of the air outlet section 12. A dividing section 30 is provided in the air outlet section 12 to divide the air outlet section 12 into at least two air outlet channels 121. Each air outlet channel 121 is connected to the fan outlet and the air outlet 13, respectively. In the direction from the first end to the second end of the air outlet section 12, that is, in the direction from the fan outlet to the air outlet, the dividing section 30 has a first dividing end 31 and a second dividing end 32 arranged sequentially. The second dividing end 32 of the dividing section extends to the air outlet 13 to further suppress the swirling airflow and reduce noise.

[0038] In this embodiment, from the first end to the second end of the air outlet section 12, the dividing part 30 has a first dividing end 31 and a second dividing end 32 arranged sequentially; wherein, the first dividing end 31 has a first air guiding arc surface 311, and the radial direction of the first air guiding arc surface 311 is parallel to the sequential arrangement direction of at least two air outlet channels 121; the plane of the second dividing end 32 is a plane 321.

[0039] Specifically, the radial direction of the first air guide arc surface 311 plane of the first segmented end 31 is parallel to the sequential arrangement direction of at least two air outlet channels 121. The fresh air flowing out of the fan outlet experiences less resistance when it flows sequentially through the first air guide arc surface 311 plane of the first segmented end 31 in the air outlet channel, and can flow out of the air outlet more smoothly, reducing air volume loss.

[0040] In this embodiment, in the direction from the first end to the second end of the air outlet section 12, the dividing part 30 has a first dividing end 31 and a second dividing end 32 arranged sequentially; in the direction from the first dividing end 31 to the second dividing end 32, the width of the dividing part 30 gradually decreases; wherein, the dividing part 30 extends along a first preset direction to form the first dividing end 31 and the second dividing end 32, and the width direction of the dividing part 30 is perpendicular to the first preset direction.

[0041] It should be noted that the width of the segment 30 is 'a', such as... Figure 5 As shown.

[0042] Specifically, in the direction from the first end to the second end of the air outlet section 12, the dividing part 30 has a first dividing end 31 and a second dividing end 32 arranged sequentially. In the direction from the first dividing end 31 to the second dividing end 32, the width of the dividing part 30 gradually decreases, that is, the width of the second dividing end 32 is smaller than that of the first dividing end 31. This ensures that the resistance encountered by the fresh air flowing out of the fan outlet when passing through the first dividing end 31 and the second dividing end 32 is small, allowing the fresh air to flow smoothly from the air outlet channel 121 to the air outlet 13 for discharge. This suppresses some of the swirling airflow of the impeller, thereby changing the frequency of local vortex shedding within the volute and weakening the resonance effect between the volute and the fan motor, thus reducing noise. The dividing part 30 extends along a first preset direction to form the first dividing end 31 and the second dividing end 32. The width direction of the dividing part 30 is perpendicular to the first preset direction, that is, the width direction of the dividing part 30 is perpendicular to the direction from the first end to the second end of the air outlet section 12, and both the width direction of the dividing part 30 and the first preset direction are... Figure 1 The plane direction in the middle.

[0043] Optionally, along the width direction of the dividing portion 30, the dividing portion 30 has a first end face and a second end face that are disposed opposite to each other. The first end face is disposed opposite to the first air duct wall 141, and the second end face is disposed opposite to the second air duct wall 142. The first end face is disposed parallel to at least a portion of the first air duct wall 141, and the second end face is disposed parallel to at least a portion of the second air duct wall 142. This arrangement further suppresses the swirling airflow and reduces noise.

[0044] In this embodiment, the segment 30 extends along a second preset direction to form a first end and a second end, both of which extend to the inner wall of the air duct 11; the sequential arrangement direction of at least two air outlet channels 121 is perpendicular to the second preset direction. The second preset direction is perpendicular to both the first preset direction and the width direction of the segment 30.

[0045] Specifically, the dividing part 30 extends along the second preset direction to form a first end and a second end. Both the first end and the second end extend to the inner wall of the air duct 11. The sequential arrangement direction of at least two air outlet channels 121 is perpendicular to the second preset direction, that is, the direction from the first air duct wall 141 to the second air duct wall 142 is perpendicular to the second preset direction. Both the first end and the second end extend to the inner wall of the air duct 11, which restricts the fresh air flowing out from the fan outlet to only reach the air outlet through the air outlet channel. This ensures that the dividing part can effectively suppress part of the swirling airflow of the impeller, thereby changing the frequency of local vortex shedding in the volute and weakening the resonance effect of the air duct and the fan, so as to reduce noise.

[0046] In this embodiment, as shown in Figure 1, the segment 30 and the fresh air housing 10 are integrally formed. Specifically, the integrally formed segment 30 and fresh air housing 10 simplify the noise reduction structure of the fresh air device, eliminating the need for additional parts and installation processes. Furthermore, the variation in the volute is minimal, which facilitates mold processing and part demolding. Optionally, the segment 30 and fresh air housing 10 are injection molded integrally. Optionally, the segment 30 and volute 14 are integrally formed.

[0047] In another embodiment, unlike the partition 30 which is integrally formed with the fresh air housing 10, such as Figure 5 As shown, the fresh air device also includes a drive component 40, which is disposed in the fresh air housing 10. The drive component 40 is driven to connect with the dividing part 30 so that the dividing part 30 is rotatably disposed in the air outlet section 12.

[0048] Specifically, the dividing section 30 is rotatably disposed within the air outlet section 12 and is directly driven by the drive component 40. It can rotate and move at the air outlet to change the fresh air volume and noise level, thereby meeting the user's needs in different situations.

[0049] In another embodiment, the fresh air device further includes a noise tester disposed in the fresh air housing 10. The noise tester is used to detect the noise of the fresh air device, so that the drive member 40 drives the segment 30 to rotate to the position where the noise of the fresh air device is minimized based on the noise detected by the noise tester.

[0050] Specifically, after the fresh air system is turned on, the noise meter periodically collects indoor noise levels in decibels and sends the data to the control unit. If the noise level collected at any given time exceeds a threshold, the control unit sends a signal to the drive unit 40. The drive unit 40 then rotates the dividing section 30 to a suitable position, minimizing the noise of the fresh air system. Real-time monitoring of indoor noise levels and continuous adjustment of the dividing section's position accurately reflects the user's actual needs and improves user comfort. For example, when there are many people in the room, a high-airflow, low-noise mode is needed; through program settings, the user can adjust to an appropriate position. Similarly, when the user is resting at night, a low-airflow, noise-free mode is needed; through program settings, the user can adjust to an appropriate position.

[0051] In another embodiment, the fresh air device further includes a CO2 concentration collector disposed in the fresh air housing 10. The CO2 concentration collector is used to detect the indoor CO2 concentration so as to adjust the speed of the fan 20 according to the indoor CO2 concentration value collected by the CO2 concentration collector.

[0052] Specifically, such as Figure 4When the fresh air system is activated, the CO2 concentration sensor periodically collects indoor CO2 concentration data and sends it to the control unit. If the collected CO2 concentration exceeds a threshold value, the control unit sends a signal to increase the fan speed to increase airflow. Simultaneously, the drive unit 40 drives the dividing section 30 to rotate to a position with minimal noise (the preset optimal position). This process repeats until the fan operates stably. Conversely, if the collected CO2 concentration falls below the threshold value, the control unit sends a signal to decrease the fan speed to reduce airflow. The drive unit 40 then drives the dividing section 30 to rotate to another position with minimal noise (the preset optimal position). This process repeats until the fan operates stably. By continuously monitoring indoor CO2 concentration and adjusting the fan speed, the system accurately interprets the user's actual needs, reduces unnecessary energy waste, saves energy and reduces emissions, lowers operating costs, and improves user comfort.

[0053] In this embodiment, the fresh air device includes at least two dividing parts 30, and the at least two dividing parts 30 are both disposed in the air outlet section 12 to divide the air outlet section 12 into multiple air outlet channels 121.

[0054] Specifically, at least two dividing sections 30 are provided in the air outlet section 12 of the fresh air device, which can suppress part of the swirling airflow of the impeller, thereby further changing the frequency of local vortex shedding in the volute, and further weakening the resonance effect of the air duct and the motor, so as to reduce noise.

[0055] Specifically, at least two dividing sections 30 are arranged alternately or crosswise.

[0056] In this embodiment, the dividing part 30 is provided with a plurality of connecting holes, which are spaced apart, and each connecting hole is used to connect the air outlet channels 121 on both sides of the dividing part 30.

[0057] Specifically, the dividing part 30 is provided with multiple connecting holes, each of which is used to connect the air outlet channels 121 on both sides of the dividing part 30, which can make the air flowing through the air outlet channels 121 more evenly distributed and achieve noise reduction effect.

[0058] In this embodiment, the angle between the second segment and the air outlet is 100° to 110°, which has a significant noise reduction effect; preferably, the angle between the second segment and the air outlet is 104°.

[0059] In this embodiment, when the fresh air device includes a dividing part 30, along the setting direction of the two air outlet channels 121, the width of the air outlet channel 121 near the first air duct wall 141 at the air outlet is half the width of the air outlet channel 121 away from the first air duct wall 141 at the air outlet. Such a setting has a significant noise reduction effect.

[0060] In other embodiments, such as Figure 6 As shown, the dividing part 30 is teardrop-shaped, and the second dividing end 32 does not extend to the air outlet 13. However, this embodiment has a weaker noise reduction effect than the one where the second dividing end 32 extends to the air outlet 13.

[0061] In practical implementation, test results show that when the fresh air device includes a dividing section 30, and the width of the dividing section 30 gradually decreases from the first dividing end 31 to the second dividing end 32, it presents an overall crank-like shape; the first dividing end 31 has a first air-guiding arc surface 311, and the second dividing end 32 is a plane; both the first and second ends extend to the inner wall of the air duct 11, and the angle between the second dividing end and the air outlet is 104°; the width of the air outlet 121 near the first air duct wall 141 at the air outlet is half the width of the air outlet 121 away from the first air duct wall 141 at the air outlet. At this time, the humming sound of the fresh air at the high setting is reduced most significantly, and the overall air volume is not much different from the air outlet without the dividing section 30.

[0062] In this embodiment, the fan 20 is disposed inside the volute 14. The fan 20 includes a motor and an impeller. The motor is connected to the impeller to drive the impeller to rotate, thereby allowing fresh air to enter the room. The motor is mounted on the volute 14 with screws, and the motor and impeller are bonded together with hot melt adhesive. The fresh air device 80 also includes a filter 5, a mounting bracket 6, a sealing cover 7, an air inlet baffle 8, a crankshaft 9, an air inlet baffle motor 4, and a motor cover 3. The volute cover 15 and the sealing cover 7 are fitted together to form an air inlet and an air inlet cavity. The mounting bracket 6 can be placed inside the air inlet cavity, and the mounting bracket 6 is provided with a support frame for mounting the filter 5. The filter 5 is used to filter the air drawn in from the outside. The output shaft of the air inlet baffle motor 4 is mounted with a crankshaft 9, which is connected to the air inlet baffle 8. When the fresh air mode is turned on, the air inlet baffle motor 4 rotates, causing the crankshaft 9 and the air inlet baffle 8 to rotate together and open the fresh air inlet. When the fresh air mode is turned off, the inlet baffle motor 4 reverses, causing the crankshaft 9 and the inlet baffle 8 to also reverse, closing the fresh air inlet and preventing dust from entering the air conditioner. The motor cover 3 is mounted on the volute cover 15 with screws to protect the inlet baffle motor 4.

[0063] Another aspect of the present invention provides an air conditioner including a housing 70 and the aforementioned fresh air device 80, wherein the fresh air device 80 is disposed within the housing 70.

[0064] The air conditioner provided by this invention has a housing 70 and the aforementioned fresh air device 80. The fresh air device 80 is disposed within the housing 70, which provides support and protection for the device, ensuring its normal operation. When the fresh air mode is activated, the fresh air flowing from the fan outlet enters the duct. Due to the small inner diameter of the duct, the air velocity within it is high, and the collision and friction between the air and the duct wall generates significant noise. This noise is carried by the airflow to the air outlet. Without a dividing section at the air outlet of the fresh air device, the fresh air will carry all the noise out of the duct, resulting in significant noise and impacting user comfort. Conversely, by adding a dividing section at the air outlet of the fresh air device, some of the swirling airflow within the duct is suppressed, thereby altering the frequency of local vortex shedding within the casing. This weakens the resonance effect between the duct and the motor, thus reducing noise. The air conditioner of this invention solves the problem of excessive noise in existing air conditioner fresh air devices.

[0065] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0066] The fresh air device of the present invention includes a fresh air housing 10 and at least one dividing section 30. The fresh air housing 10 has an air duct 11, and the air duct 11 has an air outlet section 12. The first end of the air outlet section 12 is connected to the fan outlet of the fan 20 of the fresh air device, and the second end of the air outlet section 12 forms an air outlet 13 for supplying fresh air. Fresh air flowing out of the fan outlet flows from the first end of the air outlet section to the second end of the air outlet section 12. The dividing section 30 is disposed in the air outlet section 12 to divide the air outlet section 12 into at least two air outlet channels. 121, each air outlet duct 121 is connected at both ends to the fan outlet and the air outlet 13, respectively, so that the fresh air flowing from the fan outlet is discharged after passing through the air outlet duct 121 and the air outlet 13. A dividing section 30 is provided within the air outlet section 12 of the fresh air device to suppress some of the swirling airflow of the fan 20 impeller, thereby changing the frequency of local vortex shedding within the air duct 11, and thus weakening the resonance effect between the air duct 11 and the fan 20, thereby reducing noise and improving user comfort. Therefore, the fresh air device of the present invention solves the problem of high noise levels in existing fresh air devices.

[0067] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0068] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, rotated 90 degrees, or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0069] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A fresh air device, comprising a fresh air housing (10), the fresh air housing (10) having an air duct (11), the air duct (11) having an air outlet section (12), a first end of the air outlet section (12) being connected to the fan outlet of a fan (20) of the fresh air device, and a second end of the air outlet section (12) forming an air outlet (13) for supplying fresh air, characterized in that, The fresh air system also includes: At least one dividing section (30) is provided in the air outlet section (12) to divide the air outlet section (12) into at least two air outlet channels (121), each of the air outlet channels (121) being connected to the fan outlet and the air outlet (13) respectively, so that the fresh air flowing out of the fan outlet flows through at least two of the air outlet channels (121) and is discharged from the air outlet (13); In the direction from the first end to the second end of the air outlet section (12), the segment (30) has a first segment end (31) and a second segment end (32) arranged sequentially; in the direction from the first segment end (31) to the second segment end (32), the width of the segment (30) gradually decreases; The fresh air housing (10) includes a volute (14), the volute (14) having a first air duct wall (141) and a second air duct wall (142) disposed opposite to each other, the first air duct wall (141) having a volute tongue (1411), and at least two air outlet channels (121) being arranged sequentially from the first air duct wall (141) to the second air duct wall (142), the width of the air outlet channel (121) closer to the first air duct wall (141) at the air outlet is half the width of the air outlet channel (121) farther from the first air duct wall (141) at the air outlet; The fresh air device further includes a noise tester, which is disposed in the fresh air housing (10). The noise tester is used to detect the noise of the fresh air device, so that the dividing part (30) is rotated to the position where the noise of the fresh air device is minimized according to the noise detected by the noise tester.

2. The fresh air device according to claim 1, characterized in that, The fresh air housing (10) includes a volute cover (15) which is connected to the volute (14) to form the air duct (11).

3. The fresh air device according to claim 1, characterized in that, In the direction from the first end to the second end of the air outlet section (12), the dividing part (30) has a first dividing end and a second dividing end arranged in sequence; wherein the second dividing end extends to the air outlet (13).

4. The fresh air device according to claim 1, characterized in that, In the direction from the first end to the second end of the air outlet section (12), the dividing part (30) has a first dividing end (31) and a second dividing end (32) arranged in sequence; wherein, the first dividing end (31) has a first air guiding arc surface (311), and the radial direction of the first air guiding arc surface (311) is parallel to the sequential arrangement direction of at least two air outlet channels (121); the second dividing end (32) is a plane (321).

5. The fresh air device according to claim 1, characterized in that, The segment (30) extends along a second preset direction to form a first end and a second end, both of which extend to the inner wall of the air duct (11); the sequential arrangement direction of at least two air outlet channels (121) is perpendicular to the second preset direction.

6. The fresh air device according to any one of claims 1 to 5, characterized in that, The segment (30) is integrally formed with the fresh air housing (10).

7. The fresh air device according to any one of claims 1 to 5, characterized in that, The fresh air system also includes: A drive unit (40) is disposed in the fresh air housing (10). The drive unit (40) is driven to be connected to the dividing part (30) so that the dividing part (30) is rotatably disposed in the air outlet section (12).

8. The fresh air device according to any one of claims 1 to 5, characterized in that, The fresh air system also includes: A CO2 concentration collector is installed in the fresh air housing (10). The CO2 concentration collector is used to detect the indoor CO2 concentration so as to adjust the speed of the fan (20) according to the indoor CO2 concentration value collected by the CO2 concentration collector.

9. The fresh air device according to any one of claims 1 to 5, characterized in that, The fresh air device includes at least two of the dividing sections (30), and the at least two dividing sections (30) are all disposed in the air outlet section (12) to divide the air outlet section (12) into a plurality of air outlet channels (121).

10. The fresh air device according to any one of claims 1 to 5, characterized in that, The dividing part (30) is provided with a plurality of connecting holes, which are spaced apart, and each connecting hole is used to connect the air outlet channel (121) on both sides of the dividing part (30).

11. An air conditioner, comprising a housing (70), characterized in that, The air conditioner further includes a fresh air device (80) according to any one of claims 1 to 10, the fresh air device (80) being disposed within the housing (70).

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