An air treatment device

Abstract

The present application relates to an air treatment device, comprising a body, an air inlet and two air outlets are arranged on the body and are in fluid communication with the interior of the body, the first air outlet is arranged on the top wall of the body, and the second air outlet is arranged on the side wall of the body; a fan is arranged in the body, the fan comprises a volute and an impeller arranged in the volute, the air inlet hole of the volute is in fluid communication with the air inlet of the body; a wind guide pipe is in fluid communication with the air outlet hole of the volute at one end, and the other end of the wind guide pipe is divided into two outlets, the first outlet is in fluid communication with the first air outlet, and the second outlet is in fluid communication with the second air outlet; a shielding piece comprises a valve plate movably arranged in the wind guide pipe, the valve plate can selectively communicate the first end of the wind guide pipe with the first outlet or the second outlet; a driving piece is fixedly arranged in the body and is in driving connection with the valve plate. The airflow flowing out of the air outlet hole of the volute flows through the wind guide pipe to the two air outlets, so that the loss of air volume from the volute to the air outlet can be reduced.

Description

Technical Field

[0001] This invention relates to the field of air treatment technology, and more specifically to an air treatment device. Background Technology

[0002] With rapid industrialization, air pollution has become increasingly severe. Since people spend over 80% of their lives indoors, they are increasingly aware of the harmful effects of indoor air pollution and are paying more attention to the health of their living environment. Therefore, air purifiers have become a mainstay product in the small appliance market. However, conventional air purifiers can only be used as air purifiers in winter and generally cannot function as electric fans simultaneously. In summer, when an electric fan is needed, consumers still need to purchase a separate one, which not only takes up building space but also increases their financial burden.

[0003] To address the aforementioned issues, patent CN201620403175.1 (publication number CN205641242U) discloses an "Air Purifier Integrating Air Purification and Fan," which includes a housing, a filter device disposed within the housing, a fan, a flow guide, a mode switching plate, and a control circuit board. The housing can be cuboid or cylindrical, with an air inlet at the bottom, a fan outlet on the side, and a purifier outlet at the top. The filter device is disposed inside the air inlet at the bottom of the housing and is used to purify the outside air entering through the inlet. The fan is disposed within the housing and is used to draw outside air into the housing through the air inlet. The flow guide is used to guide the air delivered by the fan. The mode switching plate is a movable component, used to change the airflow path at the fan outlet by changing the position of the mode switching plate, selecting whether clean air flows to the fan outlet and / or the purifier outlet.

[0004] However, the aforementioned air purifier has the following drawbacks: 1. Although it is equipped with an air guide, the positional relationship between the air guide and the fan outlet, air outlet, and air purifier outlet is not shown in the text or drawings. It is unclear how the air guide effectively achieves airflow. In addition, fans generally generate noise, and it is not stated whether the air guide can reduce noise. Furthermore, it is not clear from the attached drawings and text whether the air guide can effectively guide the fan's airflow to the fan outlet or the air purifier outlet. If the air guide is not properly set, it may cause airflow loss. 2. Although there are vertical and horizontal grilles at the fan outlet, the horizontal grille can be manually adjusted for tilt angle, and the vertical grille can be electrically adjusted for tilt angle, thus satisfying the convenience of using it as a fan. However, the grille setting only adjusts the airflow direction. Due to the limitations of the model specifications, the size of the fan outlet is usually relatively small, which will result in excessively high wind speeds, causing discomfort when blowing on people. The grille may have a certain degree of wind blocking effect, but it cannot adaptively adjust according to the airflow speed. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide an air handling device that can reduce air volume loss, in light of the current state of the prior art.

[0006] The second technical problem to be solved by the present invention is to provide an air handling device that can adaptively adjust the airflow velocity at the air outlet, in light of the current state of the prior art.

[0007] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: an air handling device, comprising:

[0008] The body is hollow inside and has an air inlet and two air outlets that are in fluid communication with the interior. The two air outlets are a first air outlet and a second air outlet. The first air outlet is located on the top wall of the body and the second air outlet is located on the side wall of the body.

[0009] A fan is installed in the body. The fan includes a volute and an impeller installed in the volute. The air inlet of the volute is in fluid communication with the air inlet of the body.

[0010] Its characteristic is that it further includes:

[0011] The air duct is fluidly connected at one end to the air outlet of the volute, and the other end of the air duct is divided into two outlets. The first outlet is fluidly connected to the first air outlet, and the second outlet is fluidly connected to the second air outlet.

[0012] The shielding component includes a valve plate movably disposed in the air duct, the valve plate being able to connect the first end of the air duct to either a first outlet or a second outlet.

[0013] The driving component is fixedly installed in the machine body and is connected to the valve plate drive.

[0014] The air duct can have various internal structures to allow fluid communication with the first and second air outlets. For example, the air duct could have two isolated flow channels. However, this makes it inconvenient to install a shielding device. Therefore, preferably, the air duct is divided into a first flow channel, a second flow channel, and a third flow channel. The air inlet of the third flow channel is fluidly connected to the air outlet of the volute. The air outlet of the third flow channel splits into the isolated first and second flow channels. The first flow channel extends vertically, and its air outlet is the first outlet. The second flow channel bends and extends towards the second air outlet, and its air outlet is the second outlet. The shielding device is located in the third flow channel and is positioned adjacent to the first and second flow channels. The valve plate can block either the first or second flow channel. This division of the air duct into three flow channels facilitates the placement of the valve plate in the third flow channel to block either the first or second flow channel.

[0015] As airflow flows from the third channel into the second channel, the wind direction changes (from vertically upward to horizontally), which can easily generate noise. Therefore, the second channel is divided into an oblique section and a horizontal section along the airflow direction. The oblique section slopes upward towards the second air outlet and has a funnel shape with a cross-sectional area that gradually decreases along the airflow direction. The funnel structure can effectively achieve a uniform airflow transition while changing the wind direction, reducing noise.

[0016] To facilitate the formation of three flow channels in the guide tube, a baffle could be installed to divide the tube into three channels. However, installing the baffle is cumbersome. Therefore, preferably, the air outlet of the volute faces upwards. The guide tube includes a first tube body and a second tube body. The lower part of the second tube body is arranged side by side with the lower part of the first tube body. The lower part of the first tube body has a first opening, and the lower part of the second tube body has a second opening. The first and second openings are correspondingly arranged, so that the interiors of the lower parts of the first and second tube bodies are connected to form the third flow channel. The interior of the upper part of the first tube body is the first flow channel, and the interior of the upper part of the second tube body is the second flow channel. This method of opening openings on two tube bodies and then connecting the two openings forms three flow channels, which is more convenient.

[0017] To facilitate the formation of the horizontal and inclined sections, the second pipe body includes a first sidewall and a second sidewall arranged opposite to each other, and two third sidewalls connected between the first and second sidewalls. The two third sidewalls are arranged opposite to each other. The first sidewall includes a horizontally extending transverse wall and an inclined wall extending downwards. The transverse wall and the inclined wall are connected by a rounded transition to allow for smooth airflow. The second sidewall includes a horizontal portion and a vertical portion connected in sequence. The vertical portion is partially inclined downwards towards the first sidewall to form an inclined section. The horizontal portion and the transverse wall are arranged opposite to each other, and the horizontal portion, the transverse wall, and the third sidewalls together form a horizontal section. The inclined section, the inclined wall, and the third sidewalls together form an inclined section.

[0018] To reduce the impact on airflow as it enters the second tube from the volute, the vertical section includes the aforementioned inclined section and an arc-shaped section below the inclined section. The arc-shaped section is an arc that arches away from the center of the second tube. The sidewall of the volute outlet that connects with the second sidewall is defined as the volute end section. The volute end section is arc-shaped, and the tangent of the circle containing the arc-shaped section is parallel to the tangent of the circle containing the volute end section. The part of the vertical section that connects with the volute is designed as an arc-shaped section, and the tangent of the circle containing the arc-shaped section is parallel to the tangent of the circle containing the volute end section. This reduces the impact on the airflow and decreases the probability of generating eddies and noise.

[0019] Because of the structure of the inclined and curved sections in the vertical section, if there is no rounded transition between them, an obtuse angle will be formed, which will affect the airflow. In order to make the airflow transition more smoothly, the inclined section and the curved section are connected by a rounded transition, which allows the airflow to flow smoothly and improves the airflow efficiency.

[0020] To prevent airflow from entering the second flow channel and creating turbulence, the valve plate, with the valve plate obstructing the first pipe body, is inclined from top to bottom in a direction away from the second pipe body, and the inclined wall and the valve plate are on the same plane. If the inclined wall and the valve plate are on different planes, the airflow needs to change direction as it flows along the valve plate towards the inclined wall, which can easily create turbulence and generate noise.

[0021] Because the valve plate is tilted when blocking the first flow channel, if it were to move horizontally, its travel distance would be large, requiring a larger air duct and consequently a larger overall size and space-consuming component. Therefore, a rotating valve plate is more suitable. However, if the valve plate rotates around its upper or lower end, its rotation trajectory is large, potentially interfering with the air duct and affecting its rotation. The shielding component also includes two opposing mounting plates, triangular in shape. The valve plate is connected between the hypotenuses of the two mounting plates. A rotating rod is located at the junction of the two right-angled sides of one of the mounting plates, passing through the second pipe and connected to the drive component. The length of the valve plate is the same as the length of the hypotenuse of the mounting plate. During rotation, it rotates around one end of the right-angled side of the mounting plate. Because the right-angled side is shorter, the rotation trajectory is smaller, reducing the probability of interference with the air duct.

[0022] The technical solution adopted by the present invention to solve the second technical problem mentioned above is as follows: a plurality of blades are provided vertically along the length of the second outlet, each blade is rotatably connected to the wall of the second outlet through a vertically extending rotating shaft, and each blade, under the action of the elastic element, always maintains a tendency to tilt away from the centerline of the second outlet along the airflow direction.

[0023] Preferably, in the initial state, the angle between the blade and the plane where the air outlet is located is between 40° and 70°. Within this angle range, the blade will not significantly affect the airflow, but it can still reduce the wind speed.

[0024] In order to ensure that the elastic element can act well on the rotating shaft when it rotates, so that the blade tends to maintain an angle with the second outlet, the rotating shaft passes through the second tube body and is located outside the second outlet. The elastic element is provided on the top wall surface of the second tube body. The elastic element is a spring sheet, one end of which is fixedly installed on the second tube body, and the other end extends at least one circle around the circumference of the rotating shaft, so that the elastic element surrounds the outer circumference of the rotating shaft. The rotating shaft and the elastic element are connected by a connecting shaft perpendicular to the rotating shaft.

[0025] Because the blades initially form an angle with respect to the second outlet, the airflow is deflected to both sides of the outlet, resulting in uneven airflow and negatively impacting the user experience. To address this issue, one solution is to design the blades with a teardrop-shaped outer profile, comprising a sequentially connected arcuate surface, a first side surface, and a second side surface. Both the first and second side surfaces extend towards each other and converge at a pointed tip. The first side surface is closer to the centerline of the second outlet than the second side surface, and it has a protrusion. The airflow will generate a Coanda effect on both the first and second side surfaces, converging towards the pointed tip where they meet. The first side surface guides the airflow laterally towards the second outlet, while the second side surface directs it perpendicular to the outlet. To mitigate the adverse effect of the first side surface, the protrusion on the first side surface disrupts the Coanda effect, reducing the wall adhesion effect and thus minimizing airflow deflection, directing the airflow perpendicular to the second outlet.

[0026] Because the blades initially form an angle with respect to the second outlet, the airflow is deflected to both sides of the outlet, resulting in uneven airflow and negatively impacting the user experience. To address this issue, an alternative solution is to install a rectifier plate in the second outlet. This rectifier plate has multiple through-holes spaced along the length of the outlet and is located downstream of the blades. The rectifier plate effectively gathers the airflow from the second outlet and distributes it evenly.

[0027] The fan function is only used in hot weather, so the second air outlet will be idle for a significant amount of time. To prevent debris from entering the unit through the second air outlet, the unit is equipped with a movable baffle. The second air outlet is located in the movement path of the baffle, allowing the baffle to open or close the second air outlet. This allows the second air outlet to be closed when air is not needed.

[0028] In order to automatically drive the baffle to move without human operation, the baffle can move up and down relative to the machine body. The machine body is provided with a driving mechanism, which includes a motor mounted on the machine body, a gear connected to the motor, and a rack meshing with the gear. The rack extends vertically and is mounted on the baffle.

[0029] In order to enable the air handling equipment to also have the function of air purification, a filter screen is provided in the body between the air inlet and the air inlet hole of the volute.

[0030] Compared with the prior art, the advantages of this invention are: 1. This invention has two air outlets, one facing upwards and the other facing to the side, which allows users to choose the airflow direction according to their needs, making it more convenient; and by setting a guide pipe between the two air outlets of the volute and the body, the airflow from the volute's air outlet hole flows through the guide pipe to the two air outlets, reducing airflow loss from the volute to the air outlets; 2. Because the second air outlet is usually smaller due to the limitations of the model specifications, and the airflow channel from the guide pipe to the second air outlet usually has a narrowing structure to adapt to the change in airflow direction, all of these factors result in a faster airflow velocity at the second air outlet, which is usually used as the fan outlet, i.e., direct blowing. For users, excessively high wind speeds can cause discomfort, while excessively low wind speeds can affect the cooling effect. Therefore, this invention addresses this issue by installing blades in the second outlet. Under the action of an elastic element, the blades always maintain a tendency to tilt away from the centerline of the second outlet along the airflow direction. That is, the blades initially form an angle with the plane of the second outlet. When the wind speed is low, the blades experience less wind force and less wind resistance, resulting in minimal wind speed changes. When the wind speed at the outlet is high, the blades experience greater wind force and rotate. Under the action of the elastic element, the blades experience a reverse elastic force, which acts on the wind through the blades, thus reducing the wind speed and achieving the effect of adaptive wind speed adjustment. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention (the baffle opens the second air outlet and the valve plate blocks the first flow channel);

[0032] Figure 2 for Figure 1 A sectional view;

[0033] Figure 3 for Figure 1 A cross-sectional view from another direction;

[0034] Figure 4 for Figure 3 A structural diagram of the air duct and shielding components in the diagram;

[0035] Figure 5 for Figure 3 A schematic diagram of the air duct and shielding components in another direction;

[0036] Figure 6 for Figure 4 A schematic diagram of the decomposition process;

[0037] Figure 7 for Figure 4 A schematic diagram of the decomposition from another direction;

[0038] Figure 8 for Figure 1 A schematic diagram of the wall panel with a second air outlet;

[0039] Figure 9 This is a schematic diagram of the structure of Embodiment 1 of the present invention (the baffle closes the second air outlet);

[0040] Figure 10 for Figure 3 Simplified structural diagram;

[0041] Figure 11 for Figure 3 Simplified structural diagram (baffle opens the second air outlet, valve plate blocks the second flow channel);

[0042] Figure 12 This is a partial structural diagram of Embodiment 2 of the present invention;

[0043] Figure 13 for Figure 12 A schematic diagram of the structure of the second tube in the diagram;

[0044] Figure 14 for Figure 13 A schematic diagram of the structure from another direction;

[0045] Figure 15 for Figure 13 A schematic diagram of the structure without the rectifier plate;

[0046] Figure 16 for Figure 15 A sectional view;

[0047] Figure 17 for Figure 16 A schematic diagram of the structure of one of the blades. Detailed Implementation

[0048] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Example

[0049] like Figures 1-11 As shown, the air handling equipment of this preferred embodiment includes a body 1, a fan 2, an air duct 3, a shield 4, blades 5, etc.

[0050] like Figures 1-3As shown, the interior of the body 1 is hollow. The body 1 has an air inlet 11 and two air outlets that are fluidly connected to the interior. The air inlet 11 is located on the side wall of the body 1. The two air outlets are the first air outlet 12 and the second air outlet 13. The first air outlet 12 is located on the top wall of the body 1. The second air outlet 13 is located on the side wall of the body 1 and is located at the upper part of the body 1. The second air outlet 13 can be located on a different side wall of the body 1 than the air inlet 11. Either the first air outlet 12 or the second air outlet 13 can be fluidly connected to the air inlet 11.

[0051] The fan 2 is housed within the body 1. The fan 2 can employ an existing structure, including a volute 21 and an impeller 22 housed within the volute 21. The air inlet 211 of the volute 21 is fluidly connected to the air inlet 11 of the body 1. A filter 6 is provided in the body 1 between the air inlet 11 and the air inlet 211 of the volute 21. The filter 6 can be a conventional filter, such as an activated carbon filter 6 or a HEAP filter 6. Generally, when the air handling equipment of this embodiment is used as an air purifier, the first air outlet 12 is connected to the air inlet 11, and the airflow outlet faces upward. Combined with the whole-room airflow field, it can quickly purify the air in the whole room. At the same time, the air volume is large and will not blow directly on the face, causing discomfort. When the air handling equipment of this embodiment is used as a fan, the second air outlet 13 is connected to the air inlet 11, and the airflow outlet faces to the side, which can blow directly on the face, bringing a comfortable airflow.

[0052] The fan function is only used in hot weather, so the second air outlet 13 will be idle for a lot of time. To prevent debris from entering the unit 1 through the second air outlet 13, such as... Figure 1 , 3 As shown in Figures 8 and 9, the body 1 is also provided with a baffle 7 that can move up and down relative to it. The second air outlet 13 is located on the movement path of the baffle 7, so that the baffle 7 can open or close the second air outlet 13. Of course, the baffle 7 can also be rotatably mounted on the body 1.

[0053] In this embodiment, the body 1 is provided with a drive mechanism 71. The drive mechanism 71 includes a motor 711 mounted on the body 1, a gear (not shown in the figure) connected to the motor 711, and a rack 712 meshing with the gear. The rack 712 extends vertically and is mounted on the baffle 7. The motor 711 drives the gear to rotate, and the rack 712 moves up and down to drive the baffle 7 to move up and down, thereby opening or closing the second air outlet 13.

[0054] like Figure 3 , 10As shown, one end of the air duct 3 is fluidly connected to the air outlet 212 of the volute 21, and the other end of the air duct 3 is divided into two outlets. The first outlet 31 is fluidly connected to the first air outlet 12, and the second outlet 32 ​​is fluidly connected to the second air outlet 13. In this embodiment, the air outlet 212 of the volute 21 faces upward. The air duct 3 includes a first tube body 33 and a second tube body 34. The lower part of the second tube body 34 is arranged side by side with the lower part of the first tube body 33. A support plate 210 is formed laterally at the air outlet 212 of the volute 21. The lower ends of the first tube body 33 and the second tube body 34 are both mounted on the support plate 210. The first tube body 33 is arranged vertically, and the upper part of the second tube body 34 slopes upward toward the second air outlet 13.

[0055] The lower part of the first pipe body 33 has a first opening 330, and the lower part of the second pipe body 34 has a second opening 340. The first opening 330 and the second opening 340 are correspondingly arranged, so that the interior of the lower part of the first pipe body 33 and the interior of the lower part of the second pipe body 34 are connected to form a third flow channel 35. The interior of the upper part of the first pipe body 33 is the first flow channel 36, and the air outlet of the first flow channel 36 is the first outlet 31. The interior of the upper part of the second pipe body 34 is the second flow channel 37, and the air outlet of the second flow channel 37 is the second outlet 32. The upper and lower parts of the first pipe body 33 are divided by the plane where the top wall surface of the first opening 330 is located, and the upper and lower parts of the second pipe body 34 are divided by the plane where the top wall surface of the second opening 340 is located.

[0056] This is equivalent to dividing the interior of the air duct 3 into a first flow channel 36, a second flow channel 37, and a third flow channel 35. The air inlet of the third flow channel 35 is fluidly connected to the air outlet 212 of the volute 21. The air outlet of the third flow channel 35 is split into the first flow channel 36 and the second flow channel 37, which are isolated from each other. The first flow channel 36 extends vertically, and the second flow channel 37 bends and extends toward the second air outlet 13.

[0057] A shielding component 4 is disposed at the junction of the first flow channel 36 and the second flow channel 37. The shielding component 4 includes a mounting plate 41 and a valve plate 42. There are two opposing mounting plates 41, which are triangular in shape. The valve plate 42 is connected between the hypotenuses of the two mounting plates 41. A rotating rod 411 is provided at the junction of the two right-angled sides of one of the mounting plates 41. The rotating rod 411 passes through the second tube 34 and is connected to the driving component 43. The driving component 43 is fixedly mounted on the support plate 210 and can be a motor.

[0058] The driving component 43 drives the rotating rod 411 to rotate, and the blocking component 4 rotates around the rotating rod 411, so that the valve plate 42 can be blocked in the first flow channel 36 or the second flow channel 37, so that the first end of the air guide pipe 3 can be selectively connected to the first outlet 31 or the second outlet 32. In this embodiment, the rotation is centered on the rotating rod 411, and the radius of the rotation trajectory of the valve plate 42 is the right-angle side of the mounting plate 41. The rotation trajectory is small and will not interfere with the air guide pipe 3. Otherwise, if the rotation is centered on the upper or lower end of the valve plate 42, the radius of the rotation trajectory of the valve plate 42 is the hypotenuse of the mounting plate 41. The rotation trajectory is large and is likely to interfere with the air guide pipe 3.

[0059] When the airflow flows from the third channel 35 into the second channel 37, the wind direction changes (from vertically upward to horizontally outward), which can easily generate noise, turbulence, and other phenomena. Therefore, the second tube 34 has been improved in this embodiment as follows:

[0060] The second tube body 34 includes a first sidewall 341 and a second sidewall 342 disposed opposite to each other, and two third sidewalls 343 connected between the first sidewall 341 and the second sidewall 342. The two third sidewalls 343 are disposed opposite to each other. The first sidewall 341 includes a horizontally extending transverse wall 3411 and a downwardly extending inclined wall 3412. The transverse wall 3411 and the inclined wall 3412 are connected by a rounded transition to allow for smooth airflow. The second sidewall 342 includes a horizontal portion 3421 and a vertical portion 3422 connected in sequence. The vertical portion 3422 is partially inclined from top to bottom towards the first sidewall 341 to form an inclined section 34221. The horizontal portion 3421 and the transverse wall 3411 are disposed opposite to each other, and the horizontal portion 3421, the transverse wall 3411 and the third sidewall 343 together form a horizontal section 371. The inclined section 34221, the inclined wall 3412 and the third sidewall 343 together form an inclined section 372.

[0061] In other words, the second flow channel 37 is divided into an inclined section 372 and a horizontal section 371 along the airflow direction. The inclined section 372 slopes upward toward the second air outlet 13, and the inclined section 372 has a funnel shape with a cross-sectional area that gradually decreases along the airflow direction. The funnel structure can effectively achieve a uniform airflow transition while changing the airflow direction, thus reducing noise.

[0062] The vertical section 3422 includes the aforementioned inclined section 34221 and an arc-shaped section 34222 located below the inclined section 34221. The arc-shaped section 34222 is an arc shape that arches away from the center of the second tube body 34. The side wall of the volute 21 air outlet 212 that connects with the second side wall 342 is defined as the volute end section 213. The volute end section 213 is arc-shaped, and the tangent of the circle containing the arc-shaped section 34222 is parallel to the tangent of the circle containing the volute end section 213. The part of the vertical section 3422 that connects with the volute 21 is designed as an arc-shaped section 34222, and the tangent of the circle containing the arc-shaped section 34222 is parallel to the tangent of the circle containing the volute end section 213. This reduces the impact on the airflow and reduces the probability of generating eddies and noise.

[0063] In addition, the angle between the plane containing the inclined segment 34221 and the plane containing the transverse wall 3411 is between 45° and 75°, which can also reduce noise. The radius of the arc segment 34222 needs to be greater than the length of the right-angle side of the mounting plate 41 to avoid interference between the shielding member 4 and the arc segment 34222 during rotation.

[0064] Because of the structure of the inclined section 34221 and the arc section 34222 of the vertical part 3422, if there is no rounded transition between them, an obtuse angle will be formed between them, which will affect the airflow. In order to make the airflow transition more smoothly, the inclined section 34221 and the arc section 34222 are connected by a rounded transition, which makes the airflow flow smoothly and improves the airflow efficiency. Moreover, the larger the diameter of the rounded corner, the better the effect of smooth airflow transition. Preferably, the diameter of the rounded corner is greater than 20mm, and the upper limit is adjusted according to the volume of the body 1.

[0065] With the valve plate 42 obstructed within the first tube 33, the valve plate 42 is inclined from top to bottom away from the second tube 34. The upper end of the valve plate 42 is connected to the inclined wall 3412, and the valve plate 42 and the inclined wall 3412 are on the same plane. If the inclined wall 3412 and the valve plate 42 are on different planes, the airflow needs to change direction during its flow along the valve plate 42 towards the inclined wall 3412, which can easily lead to turbulence and noise. Example

[0066] like Figures 12-17 As shown, the difference between this embodiment and embodiment 1 is that the following structure is added; other structures can be referred to in embodiment 1.

[0067] Because the second air outlet 13 is located on the side of the unit 1, it is usually smaller due to the limitations of the unit size. This results in a faster airflow velocity at the second air outlet 13. Furthermore, the horn-shaped inclined section 372 in the air duct 3 also increases the airflow velocity. Since the second air outlet 13 is usually used as the air outlet of the fan, it blows directly on the user. If the wind speed is too fast, it will make the user feel uncomfortable. If the wind speed is too slow, it will affect the user's cooling effect. Therefore, in this embodiment, multiple blades 5 are vertically arranged in the second outlet 32 ​​along its length. Each blade 5 is rotatably connected to the wall of the second outlet 32 ​​through a vertically extending pivot 51. Under the action of the elastic member 8, each blade 5 always maintains a tendency to tilt away from the centerline a of the second outlet 32 ​​along the airflow direction. In the initial state (referring to the state when the air handling equipment is not yet working), the angle α between the blade 5 and the plane where the air outlet is located is between 40° and 70°. Within this angle range, blade 5 will not have a significant impact on airflow, but it can also reduce wind speed.

[0068] In this embodiment, the rotating shaft 51 passes through the second tube 34 and is located outside the second outlet 32. The elastic element 8 is disposed on the top wall surface of the second tube 34. The elastic element 8 is a spring sheet, one end of which is fixedly installed on the second tube 34, and the other end extends at least one circle along the circumference of the rotating shaft 51, so that the elastic element 8 surrounds the outer circumference of the rotating shaft 51. The rotating shaft 51 and the elastic element 8 are connected by a connecting shaft 81 perpendicular to the rotating shaft 51.

[0069] Because blade 5 initially forms an angle with the second outlet 32, the airflow will be deflected to both sides of the second outlet 32, resulting in uneven airflow and affecting the user experience. To solve this problem, the following two solutions can be adopted:

[0070] One design involves a teardrop-shaped outer profile for the blade 5, comprising a series of interconnected arcuate surfaces 52, a first side surface 53, and a second side surface 54. Both the first and second side surfaces 53 and 54 extend obliquely towards each other, converging to form a tip. The first side surface 53 is closer to the centerline a of the second outlet 32 ​​than the second side surface 54. At least two protrusions 55 are spaced apart along the length of the first side surface 53. The airflow will experience a Coanda effect on both the first and second side surfaces 54, converging towards the tip formed by their intersection. The first side surface 53 guides the airflow laterally towards the second outlet 32, while the second side surface 54 directs the airflow in a direction perpendicular to the second outlet 32. To mitigate the adverse effect of the first side surface 53 on the airflow, the protrusions 55 on the first side surface 53 disrupt the Coanda effect, reducing the wall adhesion effect and thus minimizing airflow deflection, directing the airflow in a direction perpendicular to the second outlet 32. The airflow guidance directions of the first and second side surfaces 53 are as follows: Figure 17 As shown by the hollow arrow in the image.

[0071] Another option is to install a rectifier plate 9 in the second outlet 32. The rectifier plate 9 has multiple through holes 91 spaced apart along the length of the second outlet 32. Along the airflow direction, the rectifier plate 9 is located downstream of the blade 5. The rectifier plate 9 can gather the air coming out of the second outlet 32 ​​and then blow it out evenly.

[0072] You can choose to set one of the two options or set both at the same time.

[0073] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this invention can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0074] The term "fluid connectivity" as used in this invention refers to the spatial relationship between two components or parts (hereinafter referred to as the first part and the second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow from the first part along a flow path and / or be transported to the second part. This can be a direct connection between the first part and the second part, or an indirect connection between the first part and the second part through at least one third party. This third party can be a fluid channel such as a pipe, channel, conduit, guide, hole, or groove, or a chamber or combination thereof that allows fluid to flow through.

Claims

1. An air handling unit, comprising: The body (1) is hollow inside. The body (1) has an air inlet (11) and two air outlets that are in fluid communication with the interior. The two air outlets are a first air outlet (12) and a second air outlet (13). The first air outlet (12) is located on the top wall of the body (1), and the second air outlet (13) is located on the side wall of the body (1). A fan (2) is installed in the body (1). The fan (2) includes a volute (21) and an impeller (22) installed in the volute (21). The air inlet (211) of the volute (21) is in fluid communication with the air inlet (11) of the body (1). Its characteristic is that it further includes: The air duct (3) is fluidly connected at one end to the air outlet (212) of the volute (21), and the other end of the air duct (3) is divided into two outlets. The first outlet (31) is fluidly connected to the first air outlet (12), and the second outlet (32) is fluidly connected to the second air outlet (13). The shielding component (4) includes a valve plate (42) movably disposed in the air duct (3), the valve plate (42) being able to connect the first end of the air duct (3) to either the first outlet (31) or the second outlet (32); The driving component (43) is fixedly installed in the body (1) and is connected to the valve plate (42) for driving. The air duct (3) includes a first pipe body (33) and a second pipe body (34). The lower part of the second pipe body (34) is arranged side by side with the lower part of the first pipe body (33). The second pipe body (34) includes a first side wall (341) and a second side wall (342) arranged opposite to each other, and two third side walls (343) connecting the first side wall (341) and the second side wall (342). The two third side walls (343) are arranged opposite to each other. The first side wall (341) includes a horizontally extending transverse wall (3411) and an inclined wall (3412) extending from top to bottom. The transverse wall (3411) and the inclined wall (3412) are arranged from top to bottom. The walls (3412) are connected by rounded corners. The second side wall (342) includes a horizontal part (3421) and a vertical part (3422) connected in sequence. The vertical part (3422) is partially inclined from top to bottom towards the first side wall (341) to form an inclined section (34221). The horizontal part (3421) and the transverse wall (3411) are arranged opposite to each other. The horizontal part (3421), the transverse wall (3411) and the third side wall (343) together form a horizontal section (371). The inclined section (34221), the inclined wall (3412) and the third side wall (343) together form an inclined section (372).

2. The air handling equipment according to claim 1, characterized in that: The air duct (3) is divided into a first flow channel (36), a second flow channel (37) and a third flow channel (35). The air inlet of the third flow channel (35) is in fluid communication with the air outlet (212) of the volute (21). The air outlet of the third flow channel (35) is divided into a first flow channel (36) and a second flow channel (37) that are isolated from each other. The first flow channel (36) extends vertically and the air outlet of the first flow channel (36) is the first outlet (31). The second flow channel (37) bends and extends toward the second air outlet (13) and the air outlet of the second flow channel (37) is the second outlet (32). The shield (4) is located in the third flow channel (35) and is set at the junction of the first flow channel (36) and the second flow channel (37). The valve plate (42) can block the first flow channel (36) or the second flow channel (37).

3. The air handling equipment according to claim 2, characterized in that: The second flow channel (37) is divided into an inclined section (372) and a horizontal section (371) in sequence along the airflow direction. The inclined section (372) is inclined from bottom to top toward the second air outlet (13), and the inclined section (372) is in the shape of a trumpet with a cross-sectional area that gradually decreases along the airflow direction.

4. The air handling equipment according to claim 3, characterized in that: The air outlet (212) of the volute (21) faces upward. The lower part of the first tube (33) is provided with a first opening (330), and the lower part of the second tube (34) is provided with a second opening (340). The first opening (330) and the second opening (340) are arranged correspondingly, so that the interior of the lower part of the first tube (33) and the interior of the lower part of the second tube (34) are connected to form a third flow channel (35). The interior of the upper part of the first tube (33) is the first flow channel (36), and the interior of the upper part of the second tube (34) is the second flow channel (37).

5. The air handling equipment according to claim 1, characterized in that: The vertical section (3422) includes the aforementioned inclined section (34221) and an arc-shaped section (34222) located below the inclined section (34221). The arc-shaped section (34222) is an arc that arches away from the center of the second tube (34). The side wall of the air outlet (212) of the volute (21) that connects with the second side wall (342) is defined as the volute end section (213). The volute end section (213) is arc-shaped, and the tangent of the circle containing the arc-shaped section (34222) is parallel to the tangent of the circle containing the volute end section (213).

6. The air handling equipment according to claim 5, characterized in that: The inclined segment (34221) and the arc segment (34222) are connected by a rounded transition.

7. The air handling equipment according to claim 1, characterized in that: With the valve plate (42) blocked in the first tube (33), the valve plate (42) is inclined from top to bottom in a direction away from the second tube (34), and the upper end of the valve plate (42) is connected to the inclined wall (3412), and the inclined wall (3412) and the valve plate (42) are in the same plane.

8. The air handling equipment according to claim 7, characterized in that: The shielding member (4) also includes two mounting plates (41) arranged opposite to each other. The mounting plates (41) are triangular. The valve plate (42) is connected between the hypotenuses of the two mounting plates (41). A rotating rod (411) is provided at the junction of the two right-angled sides of one of the mounting plates (41). The rotating rod (411) passes through the second tube (34) and is connected to the driving member (43).

9. The air handling apparatus according to any one of claims 1 to 8, characterized in that: The second outlet (32) is provided with a plurality of blades (5) in a vertical direction along its length. Each blade (5) is rotatably connected to the wall of the second outlet (32) through a vertically extending pivot (51), and each blade (5) is always inclined away from the centerline of the second outlet (32) in the direction of airflow under the action of the elastic member (8).

10. The air handling equipment according to claim 9, characterized in that: The outer contour of the blade (5) is teardrop-shaped, including an arc surface (52), a first side surface (53) and a second side surface (54) connected in sequence. The first side surface (53) and the second side surface (54) extend towards each other and converge into a tip. The first side surface (53) is closer to the centerline of the second outlet (32) than the second side surface (54). The first side surface (53) is provided with a protrusion (55).

11. The air handling equipment according to claim 9, characterized in that: A rectifier plate (9) is installed in the second outlet (32). The rectifier plate (9) has multiple through holes (91) spaced apart along the length direction of the second outlet (32). Along the airflow direction, the rectifier plate (9) is located downstream of the blade (5).

12. The air handling apparatus according to any one of claims 1 to 8, characterized in that: The body (1) is also provided with a baffle (7) that can move relative to it, and the second air outlet (13) is located on the movement path of the baffle (7), so that the baffle (7) can open or close the second air outlet (13).

13. The air handling equipment according to claim 12, characterized in that: The baffle (7) can move up and down relative to the body (1). The body (1) is provided with a drive mechanism (71). The drive mechanism (71) includes a motor (711) mounted on the body (1), a gear connected to the motor (711) for driving, and a rack (712) meshing with the gear. The rack (712) extends vertically and is mounted on the baffle (7).

14. The air handling apparatus according to any one of claims 1 to 8, characterized in that: A filter screen (6) is provided in the body (1) between the air inlet (11) and the air inlet hole (211) of the volute (21).

Images