Air treatment system

Abstract

The utility model discloses an air handling system which comprises an air supply device and an air supply pipeline, the air supply device comprises an air supply fan and a shell, and the shell is provided with an air inlet and an air outlet; the air supply pipeline comprises a door passing device, the door passing device comprises a first air inlet part, a door passing part and a first air outlet part, the first air inlet part is located on one side of the door, the first air outlet part is located on the other side of the door, the door passing part is connected with the first air inlet part and the first air outlet part and bypasses the door, and / or the air supply pipeline comprises a beam passing device; the lintel device comprises a second air inlet part, a lintel part and a second air outlet part, and the lintel part is connected with the second air inlet part and the second air outlet part and bypasses the beam. According to the air supply pipeline in the air treatment system, the door passing device / beam passing device is arranged, so that obstacles such as doors and beams can be avoided, punching is not needed, installation is convenient, the space occupied by installation is effectively reduced, in addition, it can be guaranteed that airflow flows smoothly, and the good mute effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of indoor air treatment technology, and in particular to an air treatment system. Background Technology

[0002] An air handling unit (ALU) is an electromechanical integrated system that processes air through filtration, purification, heating, cooling, humidification, dehumidification, and distribution to meet specific environmental requirements (such as temperature, humidity, and cleanliness). It mainly consists of an outdoor unit located outdoors and an indoor unit located indoors. In operation, the indoor unit processes the air, and the processed air is then introduced into the indoor space through ductwork. However, this ductwork can present installation challenges when encountering obstacles such as beams or doors.

[0003] If holes are drilled in obstacles to run pipes, the wall structure will be damaged, which is unlikely to be accepted by users. In addition, drilling holes in obstacles will directly lead to a sharp drop in installation efficiency and increase the labor intensity of installation workers.

[0004] If the obstacle avoidance method is adopted, the current pipeline installation structure is complex in general. It is not only cumbersome to install, but also occupies a lot of installation space. In addition, it is easy to cause airflow obstruction.

[0005] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this application and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this application. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an air handling system in which the air supply duct is designed with optimized structure for the door / beam access device to avoid obstacles such as doors and beams, eliminating the need for drilling, facilitating installation, effectively reducing the space required for installation, ensuring smooth airflow, and guaranteeing better noise reduction.

[0007] The specific technical solution of this utility model embodiment is as follows:

[0008] An air handling system includes: an air supply device and an air supply duct; the air supply device is used to supply air to an indoor space through the air supply duct; the air supply device includes an air supply fan and a housing; the air supply fan is disposed within the housing, the housing has an air inlet and an air outlet, the air outlet is connected to the air supply duct, and air entering from the air inlet can flow into the indoor space through the air outlet and the air supply duct under the drive of the air supply fan; the air supply duct... The air supply duct includes a door access device, which includes a first air inlet, a door access portion, and a first air outlet. The first air inlet is located on one side of the door, and the first air outlet is located on the other side of the door. The door access portion is connected to and bypasses both the first air inlet and the first air outlet. Alternatively, the air supply duct includes a beam access device, which includes a second air inlet, a beam access portion, and a second air outlet. The second air inlet and / or the second air outlet are cylindrical or near-cylindrical. The beam access portion is connected to and bypasses both the second air inlet and the second air outlet.

[0009] In a preferred embodiment, the air supply duct includes a door, the door being connected to and abutting or close to the side post of the door, both the first air inlet and the first air outlet.

[0010] In a preferred embodiment, the air supply duct includes a door, with the first air inlet and the first air outlet at least partially or entirely located above the suspended ceiling, and the door located below the suspended ceiling.

[0011] In a preferred embodiment, the first air inlet and the first air outlet are each provided with a downward-facing lower connecting port, and the door is provided with an upward-facing upper connecting port. The door, the first air inlet, and the first air outlet are connected through the upper connecting port and the lower connecting port.

[0012] In a preferred embodiment, the air supply duct includes a door, the first air inlet is cylindrical or quasi-cylindrical or cuboid, the first air outlet is cylindrical or quasi-cylindrical or cuboid, the first air inlet is provided with at least one or at least two air inlet ports, and the first air outlet is provided with at least one or at least two air outlet ports.

[0013] In a preferred embodiment, the air supply duct includes a door access device, the door portion extending longitudinally along the side post of the door, the longitudinal height of the door portion being greater than the lateral width of the door portion.

[0014] In a preferred embodiment, the air supply duct includes a door access device. The door access portion bypasses the side post of the door. In the airflow direction, the door access device includes a first door access portion, a second door access portion, and a third door access portion connected in sequence. The side post includes a first side side, a second side side, and a third side side that are adjacent in sequence. The first door access portion is close to or abuts the first side side, the second door access portion is close to or abuts the second side side, and the third door access portion is close to or abuts the third side side. The first door access portion and the second door access portion are connected by a first arc-shaped portion, and the second door access portion and the third door access portion are connected by a second arc-shaped portion.

[0015] In a preferred embodiment, the air supply duct includes a crossbeam, the crossbeam portion being close to or abutting a beam; along the airflow direction, the crossbeam portion includes a left crossbeam portion, a lower crossbeam portion, and a right crossbeam portion connected in sequence, the beam including a left side surface, a lower side surface, and a right side surface adjacent in sequence, the left crossbeam portion being close to or abutting the left side surface, the lower crossbeam portion being close to or abutting the lower side surface, the right crossbeam portion being close to or abutting the right side surface, the left crossbeam portion and the lower crossbeam portion being connected by a third arc-shaped portion, and the lower crossbeam portion and the right crossbeam portion being connected by a fourth arc-shaped portion.

[0016] In a preferred embodiment, the inner side of the left crossbeam is tangent to the inner side of the second air inlet, and the inner side of the right crossbeam is tangent to the inner side of the second air outlet.

[0017] In a preferred embodiment, the second air inlet is provided with at least one or at least two air inlet ports, and the second air outlet is provided with at least one or at least two air outlet ports.

[0018] In a preferred embodiment, the blower includes a volute and an impeller. The volute has a volute inlet and a volute outlet. The volute outlet is spaced at a predetermined distance from the air outlet. A first noise reduction and flow guiding device is provided between the volute outlet and the air outlet. Alternatively, the side of the volute of the blower closest to the air inlet is spaced at a predetermined distance from the air inlet, and a second noise reduction and flow guiding device is provided between the side of the volute of the blower closest to the air inlet and the air inlet.

[0019] In a preferred embodiment, a first noise reduction and airflow guiding device is provided between the volute outlet and the air outlet. The first noise reduction and airflow guiding device is obliquely disposed between the volute outlet and the air outlet in the left-right direction, and is used to guide the air flowing out of the volute outlet to the air outlet. The inner surface of the first noise reduction and airflow guiding device, the volute outlet, the air outlet, and the housing form an airflow channel, and the flow area of ​​the airflow channel tends to decrease.

[0020] In a preferred embodiment, a first noise reduction and airflow guiding device is provided between the volute outlet and the air outlet. The first noise reduction and airflow guiding device includes at least one noise reduction and airflow guiding plate. The noise reduction and airflow guiding plate includes a perforated plate body and a cavity surrounded by the perforated plate body. Sound-absorbing cotton and / or sound-insulating cotton are provided in the cavity body. Alternatively, the noise reduction and airflow guiding plate includes a plate body and sound-absorbing cotton and / or sound-insulating cotton disposed on the inner side of the plate body. The plate body is planar or arc-shaped.

[0021] In a preferred embodiment, a first noise reduction and airflow guiding device is provided between the volute outlet and the air outlet. The first noise reduction and airflow guiding device includes at least two noise reduction and airflow guiding plates, which are arranged relatively at intervals. The distance between the two noise reduction and airflow guiding plates tends to decrease along the direction of airflow. The two noise reduction and airflow guiding plates, the volute outlet, the air outlet, and the housing form an airflow channel, and the flow area of ​​the airflow channel tends to decrease.

[0022] In a preferred embodiment, a first noise reduction and flow guiding device is provided between the volute outlet and the air outlet. The number of air supply fans is 2, the number of air outlets is 2, the number of the first noise reduction and flow guiding devices is 2, the two air supply fans are arranged side by side, and the two air supply fans, the two first noise reduction and flow guiding devices, and the two air outlets are respectively arranged correspondingly.

[0023] In a preferred embodiment, a second noise reduction and flow guiding device is provided between the side of the volute of the blower near the air inlet and the air inlet. The rotation axis of the impeller extends longitudinally, and the second noise reduction and flow guiding device is obliquely disposed longitudinally between the air inlet and the volute inlet to guide the air flowing in from the air inlet to the volute inlet. The volute inlet is downwardly disposed. The second noise reduction and flow guiding device is obliquely disposed from top to bottom between the air inlet and the volute inlet. The second noise reduction and flow guiding device includes at least one noise reduction and flow guiding plate. The noise reduction and flow guiding plate includes a perforated plate body and a cavity surrounded by the perforated plate body. The cavity body is provided with sound-absorbing cotton and / or sound-insulating cotton. Alternatively, the noise reduction and flow guiding plate includes a plate body and sound-absorbing cotton and / or sound-insulating cotton disposed on the windward side of the plate body. The plate body is planar or arc-shaped.

[0024] The technical solution of this utility model has the following significant beneficial effects:

[0025] The air handling system provided in this application embodiment optimizes the structure of the door / beam bypass in its air supply duct. The door bypass can bypass doors, and the beam bypass can bypass beams, eliminating the need for drilling during installation, which improves installation efficiency and reduces installation intensity. Furthermore, by coordinating the door / beam bypass with the installation location, the space required for the external structure of the door / beam bypass can be effectively reduced. In addition, it can ensure smooth airflow within the door / beam bypass, guaranteeing better noise reduction.

[0026] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, embodiments of the present invention include many changes, modifications, and equivalents. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0027] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0028] Figure 1 This is a front view of a door access device in an air handling system provided in the embodiments of this application;

[0029] Figure 2 This is a top view of a door access device in an air handling system provided in the embodiments of this application;

[0030] Figure 3 This is a front view of a beam-mounted device in an air handling system provided in the embodiments of this application;

[0031] Figure 4 This is a bottom view of a beam in an air handling system provided in the embodiments of this application;

[0032] Figure 5 This is a schematic diagram of an air handling system layout provided in the embodiments of this application;

[0033] Figure 6 This is a schematic diagram of the structure of an air supply device in an air handling system provided in the embodiments of this application;

[0034] Figure 7 This is an exploded view of an air supply device in an air handling system provided in the embodiments of this application;

[0035] Figure 8 This is a schematic diagram of the airflow inside the air supply device of an air handling system provided in the embodiments of this application.

[0036] Reference numerals in the figures of this application:

[0037] 4. Air handling unit;

[0038] 5. Air supply device;

[0039] 50. Air supply casing;

[0040] 5101, volute inlet;

[0041] 5102. Volute outlet;

[0042] 51. Air supply fan;

[0043] 511. First volute;

[0044] 512. Second volute;

[0045] 52. Air supply ductwork;

[0046] 521. Door gate;

[0047] 5210. Doorway;

[0048] 5211, First air intake;

[0049] 5212, First air outlet;

[0050] 531. Air inlet port;

[0051] 532. Air outlet port;

[0052] 5215. Upper connecting port;

[0053] 5216. Lower connecting port;

[0054] 5217. First passageway;

[0055] 5218. Second passageway;

[0056] 5219. Third passageway;

[0057] 5213, First arc-shaped part;

[0058] 5214. Second arc-shaped part;

[0059] 522. Beam lintel;

[0060] 5220. Lintel section;

[0061] 5221. Second air intake;

[0062] 5222, Second air outlet;

[0063] 5223, Third arc-shaped part;

[0064] 5224. Fourth arc-shaped part;

[0065] 5227. Left lintel section;

[0066] 5228. Lower beam section;

[0067] 5229. Right lintel section;

[0068] 53. First noise reduction and airflow guiding device;

[0069] 530. Noise Reduction Deflector Plate;

[0070] 541. Airflow channel;

[0071] 542. Sound-absorbing cotton and / or sound-insulating cotton;

[0072] 54. Second noise reduction and airflow guiding device;

[0073] 55. Air inlet;

[0074] 56. Air vent;

[0075] 600. Balcony;

[0076] 6. Suspended ceiling;

[0077] Y, the height direction. Detailed Implementation

[0078] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate this utility model and are not intended to limit the scope of this utility model. After reading this utility model, any modifications of this utility model in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0079] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0080] Unless otherwise defined, 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 belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0081] This utility model provides an air handling system in which the air supply duct is optimized by designing the door / beam access device to avoid obstacles such as doors and beams, eliminating the need for drilling, making installation convenient, and effectively reducing the space required for installation. In addition, it can ensure smooth airflow and guarantee better noise reduction.

[0082] Please refer to the following for comprehensive information. Figures 1 to 8 This application specification provides an air handling system, which may include: an air supply device 5 and an air supply duct 52. The air supply device 5 is used to supply air to an indoor space through the air supply duct 52. The air supply device 5 includes an air supply fan 51 and a housing. The air supply fan 51 is disposed in the housing, and the housing has an air inlet 55 and an air outlet 56. The air outlet 56 is used to communicate with the air supply duct 52. Air entering from the air inlet 55 can flow to the indoor space through the air outlet 56 and the air supply duct 52 under the drive of the air supply fan 51. The air supply duct 52 includes a door access device 521, which includes a first... The system includes an air inlet 5211, a doorway 5210, and a first air outlet 5212. The first air inlet 5211 is located on one side of the door, and the first air outlet 5212 is located on the other side of the door. The doorway 5210 is connected to both the first air inlet 5211 and the first air outlet 5212 and bypasses the door. Alternatively, the air supply duct 52 includes a beam 522. The beam 522 includes a second air inlet 5221, a beam 5220, and a second air outlet 5222. The second air inlet 5221 and / or the second air outlet 5222 are cylindrical or near-cylindrical. The beam 5220 is connected to the second air inlet 5221 and the second air outlet 5222 and bypasses the beam.

[0083] In this embodiment, the air handling system includes an air supply device 5 and an air supply duct 52, and also an air handling unit 4. The air supply device 5 is used to supply air to the indoor space through the air supply duct 52. The air supply device 5 may include a housing and an air supply fan 51 disposed within the housing (hereinafter specifically referred to as the air supply housing 50). The air inlet 55 on the air supply housing 50 is used to connect to the air to be supplied to the room after being conditioned for temperature and / or humidity and / or cleanliness, and the air outlet 56 on the air supply housing 50 is connected to the air supply duct 52 for supplying the aforementioned air to the indoor space. In use, when the air supply fan 51 is started, the air flows through the air handling unit 4 under the drive of the air supply fan 51, and after the temperature and / or humidity and / or cleanliness are regulated, it enters the air supply housing 50 through the air inlet 55, flows through the air supply fan 51, and is delivered to the indoor space through the air outlet 56 and the air supply duct 52, thereby regulating the temperature and / or humidity and / or cleanliness of the air in the indoor space.

[0084] When the air supply duct 52 delivers air from the air outlet 56 of the air supply fan 51 to the indoor space, the air supply duct 52 usually needs to avoid obstructions. For example, without openings, the air supply duct 52 needs to go around beams and / or the air supply duct 52 needs to go around doors to deliver air to the designated indoor space.

[0085] For scenarios where the air supply duct 52 needs to bypass a door, this application provides an air supply duct. The air supply duct 52 may include a door access device 521. By optimizing the structure of the door access device 521, the door access device 521 can be matched and installed with the door. By using the door access device 521 to bypass the door, no drilling is required, making installation convenient and effectively reducing the space required for installation. In addition, it can ensure smooth airflow and ensure better noise reduction.

[0086] And / or, for scenarios where the air supply duct needs to bypass a beam, this application provides an air supply duct 52, which may include a beam passer 522. By optimizing the structure of the beam passer 522, the beam passer 522 can be matched and installed with the beam. By using the beam passer 522 to bypass the beam, no drilling is required, making installation convenient and effectively reducing the space required for installation. In addition, it can ensure smooth airflow and ensure better noise reduction.

[0087] For example, when the air supply duct needs to pass through a door and a beam, the air supply duct can be equipped with both a door access device 521 and a beam access device 522.

[0088] The following descriptions, in conjunction with the specific accompanying drawings, will describe the embodiments with door access device 521 and beam access device 522 respectively.

[0089] Please refer to the following: Figures 1 to 2 When the air supply duct 52 includes a door access device 521, the door access device 521 may include a first air inlet 5211, a door access portion 5210, and a first air outlet 5212 connected in sequence. The first air inlet 5211 is located on one side of the door, the first air outlet 5212 is located on the other side of the door, and the door access portion 5210 is connected to both the first air inlet 5211 and the first air outlet 5212 and bypasses the door.

[0090] In this embodiment, such as Figure 5 As shown, the example mainly illustrates the installation of the air supply device 5 on a flat balcony 600 (specifically, in the suspended ceiling 6 of the balcony 600).

[0091] When the air supply device 5 delivers treated air to the indoor space through the air supply duct 52, the air supply duct 52 needs to pass through the door on the balcony 600. In this embodiment, when installing using a non-perforated avoidance method, in order to minimize the installation space required by the air supply duct 52 at the door position when passing through the door, the door passage portion 5210 can be matched and installed with the door. That is, the structure of the door passage portion 5210 can be designed to conform to or be similar to the outer surface of the door frame.

[0092] Specifically, the door access device 521 may include a first air inlet 5211, a door portion 5210, and a first air outlet 5212 connected in sequence. The first air inlet 5211 is located on one side of the door, and the first air outlet 5212 is located on the other side of the door. The first air inlet 5211 may be a hollow structure. The first air inlet 5211 is located between the air supply duct 52 and the door portion 5210 and can be used as an air collection box to reduce the flow velocity from the air supply duct 52 into the door portion 5210, thereby reducing air resistance. When the airflow passes through the door access device 521, especially when it passes through the door portion 5210, it can ensure a better noise reduction effect.

[0093] The first air outlet 5212 can be a hollow structure. Located between the doorway 5210 and the air supply duct 52, it can serve as an air distribution box. When the doorway 5210 is used as an air distribution box, it can be connected to multiple air supply ducts 52 simultaneously, thereby delivering treated air to different indoor spaces. This eliminates the need for a separate air distribution box, further optimizing structural integration and ease of installation.

[0094] In one embodiment, the air supply duct 52 includes a door access device 521, wherein the door access portion 5210 is connected to and abuts or is close to the side post of the door, both the first air inlet portion 5211 and the first air outlet portion 5212.

[0095] In this embodiment, for the embodiment in which a door device 521 is provided in the air supply duct 52, the door portion 5210 can be fitted or close to the side post of the door, which can reduce the space required by the outer casing structure provided outside the door portion 5210.

[0096] In one embodiment, the air supply duct 52 includes a door 521, the first air inlet 5211 and the first air outlet 5212 are at least partially or entirely located above the ceiling 6, and the door 5210 is located below the ceiling 6.

[0097] In this embodiment, when the air supply duct 52 is equipped with a door access device 521, it has a first air inlet 5211 for introducing air into the door access device 521 and a first air outlet 5212 for discharging air from the door access device 521. When part or all of the first air inlet 5211 and the first air outlet 5212 are located above the ceiling 6, the ceiling 6 can be used to isolate the noise generated by the airflow at the first air inlet 5211 and the first air outlet 5212, thereby ensuring a better noise reduction effect.

[0098] Due to the limited height of the suspended ceiling 6, the passageway 5210 needs to avoid the door beam, and in particular, the passageway 5210 needs to reserve a certain space between the door beam for the installation of pipes. Therefore, the passageway 5210 is located below the suspended ceiling 6.

[0099] In one embodiment, the first air inlet 5211 and the first air outlet 5212 are respectively provided with a downward-facing lower connecting port 5216, and the door 5210 is provided with an upward-facing upper connecting port 5215. The door 5210, the first air inlet 5211, and the first air outlet 5212 are connected through the upper connecting port 5215 and the lower connecting port 5216.

[0100] In this embodiment, in the height direction Y, the first air inlet 5211 and the first air outlet 5212 are located above the door portion 5210. Taking the first air inlet 5211 as an example, the first air inlet 5211 has a downward-facing lower connecting opening 5216, which can be used for sealing connection with the door portion 5210. The door portion 5210 has an upward-facing upper connecting opening 5215, which can be used for sealing connection with the first air inlet 5211. The sealing connection method can include welding, riveting, etc., and this application does not limit it to a single method. In addition, the door portion 5210 and the first air inlet 5211 can also be an integral structure; the above description of the connecting opening is mainly to indicate the connection relationship between the two.

[0101] When the lower connecting port 5216 of the first air inlet 5211 is set downward, it can be directly connected to the upper connecting port 5215 of the upper-facing door 5210. This facilitates the smooth flow of air in the first air inlet 5211 into the door 5210, reducing flow resistance and noise.

[0102] Taking the first air outlet 5212 as an example, the first air outlet 5212 has a downward-facing lower connecting port 5216, which can be used for a sealed connection with the door portion 5210. The door portion 5210 has an upward-facing upper connecting port 5215, which can be used for a sealed connection with the first air outlet 5212. The sealing connection method can include welding, riveting, etc., and this application does not impose a specific limitation on it. Similarly, the door portion 5210 and the first air outlet 5212 can also be an integral structure; the above description of the connecting ports is mainly to indicate the connection relationship between the two.

[0103] When the lower connecting port 5216 of the first air outlet 5212 is set downward, it can directly connect with the upper connecting port 5215 of the upper-facing door 5210. This facilitates the smooth flow of air in the door 5210 into the first air outlet 5212, reducing flow resistance and noise.

[0104] When the shape and structure of the upper connecting port 5215 are different from the cross-sectional structure of the main body of the passage 5210, for example, when the flow area of ​​the upper connecting port 5215 is larger than the flow area of ​​the main body of the passage 5210, the upper connecting port 5215 can be set to a structure with a reduced flow cross-section from top to bottom, which helps to ensure that the airflow can flow smoothly and is less likely to generate turbulence, and helps to achieve further noise reduction.

[0105] In one embodiment, the air supply duct 52 includes a door 521, the first air inlet 5211 is cylindrical, quasi-cylindrical, or cuboid, the first air outlet 5212 is cylindrical, quasi-cylindrical, or cuboid, the first air inlet 5211 is provided with at least one or at least two air inlet ports 531, and the first air outlet 5212 is provided with at least one or at least two air outlet ports 532.

[0106] In this embodiment, the first air inlet 5211 can be a hollow structure. Specifically, it can be cylindrical, near-cylindrical, cuboid, or other regular box-shaped structures, thus facilitating manufacturing and installation. For example, when the first air inlet 5211 is a cuboid structure, it is not only easy to manufacture and process, but also saves space during installation.

[0107] The first air inlet 5211 has at least one air inlet port 531, which can be connected to the air supply duct 52. There can be multiple air inlet ports 531. When there are multiple air inlet ports 531, the first air inlet 5211 acts as an air collection box, concentrating air from multiple air supply ducts 52 within the first air inlet 5211, improving the uniformity of airflow, making the airflow smoother, and reducing noise. Specifically, taking two air inlet ports 531 as an example, one air inlet port 531 can be located on the left side wall of the first air inlet 5211, and the other air inlet port 531 can be located on the front side wall of the first air inlet 5211.

[0108] The first air inlet 5211 is equivalent to a static pressure box. The flow cross-sectional dimension of the static pressure box is larger than the flow area of ​​the air inlet port 531. When the airflow flows from the air inlet port 531 with a smaller flow area into the static pressure box with a larger flow cross-sectional dimension, the static pressure box can reduce the aerodynamic noise of the airflow flowing from the air inlet port 531, making the airflow smoother, thereby achieving the purpose of noise reduction.

[0109] The first air outlet 5212 is provided with at least one air outlet port 532, which is connected to the air supply duct 52. There can be multiple air outlet ports 532. When there are multiple air outlet ports 532, the first air outlet 5212 functions as an air distribution box, which can be connected to multiple different air supply ducts 52 to deliver treated air to different indoor spaces. Furthermore, using the first air outlet 5212 also helps improve the uniformity of airflow, making the airflow smoother and reducing noise. Specifically, taking two air outlet ports 532 as an example, one air outlet port 532 can be located on the right side wall of the first air outlet 5212, and the other air outlet port 532 can be located on the front side wall of the first air outlet 5212.

[0110] like Figure 1 As shown, in one embodiment, the air supply duct 52 includes a door access device 521, the door portion 5210 extending longitudinally along the side post of the door, and the longitudinal height of the door portion 5210 being greater than the lateral width of the door portion 5210.

[0111] In this embodiment, in order to ensure that the air resistance is controlled within a predetermined range when air flows through the door section 5210, for example, within 50 Pa, it is necessary to control the air velocity flowing through the door section 5210 so that the air velocity is controlled within the predetermined range. When the rated air volume is constant (for example, 900 m³ / s), 3 In order to ensure the wind speed (around 3 m / s) flowing through the door section 5210, the flow cross section of the door device 521 needs to be optimized.

[0112] Specifically, the size of the passageway 5210 protruding from the side post in the depth direction perpendicular to the side post needs to be controlled within a small range to ensure that the space occupied by the subsequent outer casing structure is not too large. Specifically, the size of the passageway 5210 in the depth direction perpendicular to the side post can be between 60 mm and 100 mm, more preferably between 70 mm and 80 mm. If the size of the passageway 5210 in the depth direction perpendicular to the side post is too small (e.g., less than 60 mm), the flow cross-section of the passageway 5210 cannot be guaranteed, thus hindering smooth airflow; if the size of the passageway 5210 in the depth direction perpendicular to the side post is too large (e.g., greater than 100 mm), it will affect the space occupied by the outer casing.

[0113] When the dimension of the passageway 5210 in the depth direction perpendicular to the side column is within the above-mentioned range, the longitudinal height of the passageway 5210 can be selected according to wind speed requirements, etc. For example, the longitudinal height of the passageway 5210 can be more than 1 meter. Specifically, this application does not make a unique limitation on the specific value of the longitudinal height of the passageway 5210.

[0114] In one embodiment, the air supply duct 52 includes a door access device 521, the door portion 5210 bypassing the side post of the door. In the airflow direction, the door access device 521 includes a first door portion 5217, a second door portion 5218, and a third door portion 5219 connected in sequence. The side post includes a first side surface, a second side surface, and a third side surface that are adjacent in sequence. The first door portion 5217 is close to or abuts the first side surface, the second door portion 5218 is close to or abuts the second side surface, and the third door portion 5219 is close to or abuts the third side surface. The first door portion 5217 and the second door portion 5218 are connected by a first arc-shaped portion 5213, and the second door portion 5218 and the third door portion 5219 are connected by a second arc-shaped portion 5214.

[0115] In this embodiment, since the door latch 521 is matched with the side post of the door, the door latch 521 may include a first door portion 5217 that is close to or fits against the first side of the side post, a second door portion 5218 that is close to or fits against the second side of the side post, and a third door portion 5219 that is close to or fits against the third side of the side post. The first door portion 5217 and the second door portion 5218 are connected by a first arc-shaped portion 5213, and the second door portion 5218 and the third door portion 5219 are connected by a second arc-shaped portion 5214. The arc-shaped structure of these arc-shaped portions significantly reduces airflow resistance, suppresses turbulence and noise, and ensures the stability of airflow.

[0116] Please refer to the following: Figures 3 to 4 In this embodiment, when the air supply duct 52 is equipped with a beam-passing device 522, the beam-passing device 522 may include a second air inlet 5221, a beam-passing part 5220, and a second air outlet 5222 connected in sequence. The beam-passing part 5220 can be designed to mimic or resemble the outer surface of a beam, thereby reducing the installation space required by the beam-passing part 5220 and its outer casing.

[0117] The second air inlet 5221 and the second air outlet 5222 can be cylindrical or quasi-cylindrical. For example, they can be cylindrical or quasi-cylindrical formed by a polygonal cylinder with chamfered edges. This helps to ensure that the air flows smoothly through the second air inlet 5221 and the second air outlet 5222, is less prone to turbulence, has low flow resistance, and also helps to reduce noise.

[0118] Please refer to the following: Figure 3 and Figure 4 In one embodiment, the air supply duct 52 includes a beam 522, with the beam portion 5220 close to or abutting a beam. Along the airflow direction, the beam portion 5220 includes a left beam portion 5227, a lower beam portion 5228, and a right beam portion 5229 connected in sequence. The beam includes a left side, a lower side, and a right side that are adjacent in sequence. The left beam portion 5227 is close to or abutting the left side, the lower beam portion 5228 is close to or abutting the lower side, and the right beam portion 5229 is close to or abutting the right side. The left beam portion 5227 and the lower beam portion 5228 are connected by a third arc-shaped portion 5223, and the lower beam portion 5228 and the right beam portion 5210 are connected by a fourth arc-shaped portion 5224.

[0119] In this embodiment, the lintel portion 5220 can be disposed close to or fitted against the beam. Specifically, the gap between the lintel portion 5220 and the beam can be zero or minimized as much as possible, thereby reducing the installation space occupied by the external enclosure structure required for the lintel portion 5220. The lintel portion 5220 may include a left lintel portion 5227, a lower lintel portion 5228, and a right lintel portion 5229 connected in sequence. The gap between each portion and the corresponding side of the beam is controlled to a minimum. For example, the left lintel portion 5227 is disposed corresponding to the left side of the beam, and is close to or fitted against the left side; the lower lintel portion 5228 is disposed corresponding to the lower side of the beam, and is close to or fitted against the lower side; the right lintel portion 5229 is disposed corresponding to the right side of the beam, and is close to or fitted against the right side. When each side of the lintel 5220 is close to or fits against the corresponding side of the beam, the installation space occupied by the outer casing structure required for the lintel 5220 can be minimized to the greatest extent possible.

[0120] It should be noted that the left or right directions described in the embodiments of this application are not absolute illustrative directions; left and right can vary depending on the viewing angle. For example, Figure 3 and Figure 4 The image shows the left and right views from the other side of the beam (looking outwards). The left crossbeam portion 5227 is the part near the second air inlet portion 5221, and the right crossbeam portion 5229 is the part near the second air outlet portion 5222.

[0121] In this embodiment, the left crossbeam portion 5227 and the lower crossbeam portion 5228 are connected by a third arc-shaped portion 5223, and the lower crossbeam portion 5228 and the right crossbeam portion 5229 are connected by a fourth arc-shaped portion 5224. The arc-shaped structure of the arc-shaped portion can be used to significantly reduce airflow resistance, suppress turbulence and noise, and ensure the stability of airflow.

[0122] In one embodiment, the inner side of the left crossbeam 5227 is tangent to the inner side of the second air inlet 5221, and the inner side of the right crossbeam 5229 is tangent to the inner side of the second air outlet 5222.

[0123] In this embodiment, taking the second air inlet 5221 as a cylindrical shape as an example, the inner surface of the left crossbeam 5227 can be tangentially arranged with the inner surface of the second air inlet 5221. This ensures that when air flows through the transition position between the second air inlet 5221 and the left crossbeam 5227, it can flow smoothly without generating turbulence, reducing flow resistance and facilitating further noise reduction. Similarly, taking the second air outlet 5222 as a cylindrical shape as an example, the inner surface of the right crossbeam 5229 can be tangentially arranged with the inner surface of the second air outlet 5222. This ensures that when air flows through the transition position between the right crossbeam 5229 and the second air outlet 5222, it can flow smoothly without generating turbulence, reducing flow resistance and facilitating further noise reduction.

[0124] In one embodiment, the second air inlet 5221 is provided with at least one or at least two air inlet ports 531, and the second air outlet 5222 is provided with at least one or at least two air outlet ports 532.

[0125] In this embodiment, the function of the second air inlet 5221 and the second air outlet 5222, as well as the technical effect corresponding to the provision of two or more air inlet ports 531 and air outlet ports 532 in the second air inlet 5221 and the second air outlet 5222, are similar to those in the above-described embodiment of the door access device 521.

[0126] The second air inlet 5221 can be a hollow structure, specifically, it can be cylindrical, which facilitates gas flow and also makes it easier to manufacture and install. For example, the second air inlet 5221 can be cylindrical.

[0127] The second air inlet 5221 has at least one air inlet port 531, which can be connected to the air supply duct 52. There can be multiple air inlet ports 531. When there are multiple air inlet ports 531, the second air inlet 5221 acts as an air collection box, concentrating air from multiple air supply ducts 52 within the second air inlet 5221, improving the uniformity of air intake, making airflow smoother, and reducing noise. Specifically, taking two air inlet ports 531 as an example, the two air inlet ports 531 can be spaced apart on the side wall of the second air inlet 5221, facilitating direct connection with the two air supply ducts 52 leading out from the air outlet port 532 of the air supply device 5.

[0128] In addition, the second air inlet 5221 is equivalent to a static pressure box. The flow cross-sectional dimension of the static pressure box is larger than the flow area of ​​the air inlet port 531. When the airflow flows from the air inlet port 531 with a smaller flow area into the static pressure box with a larger flow cross-sectional dimension, the static pressure box can reduce the aerodynamic noise of the airflow flowing from the air inlet port 531, making the airflow smoother, thereby achieving the purpose of noise reduction.

[0129] The second air outlet 5222 can be a hollow structure, specifically, it can be cylindrical, which facilitates gas flow and also makes it easier to manufacture and install. For example, the second air outlet 5222 can be cylindrical.

[0130] The second air outlet 5222 is provided with at least one air outlet port 532, which is connected to the air supply duct 52. There can be multiple air outlet ports 532. When there are multiple air outlet ports 532, the second air outlet 5222 functions as an air distribution box, connecting to multiple different air supply ducts 52 to deliver treated air to different indoor spaces. Furthermore, utilizing the second air outlet 5222 also helps improve the uniformity of airflow, making airflow smoother and reducing noise. Specifically, taking two air outlet ports 532 as an example, the two air outlet ports 532 can be located at opposite ends of the second air outlet 5222. Since the second air outlet 5222 is generally fitted or close to the beam, when the air outlet ports 532 are located in the aforementioned position, connecting them to the air supply duct 52 facilitates the air supply duct 52 extending close to the beam as well. Of course, the specific number and location of the air inlet port 531 and air outlet port 532 can be adapted to actual needs, and this application does not impose a unique limitation here.

[0131] Please refer to the following: Figure 6 , Figure 7 and Figure 8 In one embodiment, the blower 51 includes a volute and an impeller. The volute has a volute inlet 5101 and a volute outlet 5102. The volute outlet 5102 is disposed at a predetermined distance from the air outlet 56. A first noise reduction and flow guiding device 53 is disposed between the volute outlet 5102 and the air outlet 56. And / or, the side of the volute of the blower 51 near the air inlet 55 is disposed at a predetermined distance from the air inlet 55. A second noise reduction and flow guiding device 54 is disposed between the side of the volute of the blower 51 near the air inlet 55 and the air inlet 55.

[0132] During use, the air supply fan 51 of the air supply device 5 inevitably generates some noise. In order to reduce the noise generated by the air supply fan 51 during operation, while minimizing the negative impact on static pressure and ensuring that the air is delivered to the indoor space through the air supply duct 52 to achieve the predetermined air volume and air pressure, in this embodiment of the application, a noise reduction and airflow guiding device is provided inside the air supply housing 50 of the air supply device 5.

[0133] The air supply fan 51 within the air supply housing 50 may include a volute and an impeller disposed within the volute. The volute has a volute inlet 5101 and a volute outlet 5102. After the impeller starts rotating, air enters the air supply fan 51 through the volute inlet 5101 and then flows out through the volute outlet 5102.

[0134] In the air supply housing 50, at least one of the upstream of the volute inlet 5101 and the downstream of the volute outlet 5102 can be provided with a noise reduction and flow guiding device to guide and reduce the airflow, thereby reducing noise on the one hand and taking into account air volume and air pressure on the other.

[0135] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0136] In this embodiment, the volute outlet 5102 and the air outlet 56 are spaced at a predetermined distance. The predetermined distance between the volute outlet 5102 and the air outlet 56 can be used to install the first noise reduction and airflow guiding device 53. The predetermined distance can be comprehensively determined based on the size, arrangement, and method of the first noise reduction and airflow guiding device 53, and its value is not specifically limited in this application.

[0137] The first noise reduction and airflow guiding device 53 is used to guide the air flowing out of the volute outlet 5102. The air flowing out of the volute outlet 5102 can flow towards the air outlet 56 along the guiding channel formed by the first noise reduction and airflow guiding device 53 (or the first noise reduction and airflow guiding device 53 in conjunction with the first housing). During the process of the air flowing through the first noise reduction and airflow guiding device 53, the first noise reduction and airflow guiding device 53 can be used to guide and reduce the noise of the air flowing out of the volute outlet 5102.

[0138] Specifically, the first noise reduction and airflow guiding device 53 is obliquely disposed between the volute outlet 5102 and the air outlet 56 in the left-right direction, and is used to guide the airflow flowing out of the volute outlet 5102 to the air outlet 56. When the airflow flowing out of the volute outlet 5102 flows along the first noise reduction and airflow guiding device 53 to the air outlet 56, the first noise reduction and airflow guiding device 53 can guide the airflow, so that the airflow can flow efficiently and smoothly, avoiding turbulence, eddies and pressure changes during the gas flow process, thereby avoiding the generation of significant aerodynamic noise, that is, effectively controlling the generation of noise directly from the source, and thus achieving a better quiet effect. In addition, the first noise reduction and airflow guiding device 53 can also play a role in noise isolation and / or absorption through its own structural design.

[0139] Specifically, the inner surface of the first noise reduction and airflow guiding device 53, the volute outlet 5102, the air outlet 56 of the air supply housing 50, and the air supply housing 50 form an airflow channel 541. Along the airflow direction, the flow area of ​​the airflow channel 541 tends to decrease. When the airflow passes through the gradually narrowing airflow channel 541, the airflow volume and air pressure of the airflow flowing out of the volute outlet 5102 can be gradually increased by the guiding effect of the first noise reduction and airflow guiding device 53. This allows the airflow to maintain a high static pressure when it flows into the air supply duct 52 downstream of the air outlet 56 of the air supply housing 50. Even after the pipe resistance loss of the air supply duct 52, the airflow supplied to the indoor space at the terminal device can still have sufficient air pressure and airflow, thereby ensuring the effective regulation of indoor air parameters (temperature and / or humidity and / or cleanliness).

[0140] In one embodiment, a first noise reduction and airflow guiding device 53 is provided between the volute outlet 5102 and the air outlet 56. The first noise reduction and airflow guiding device 53 is obliquely disposed between the volute outlet 5102 and the air outlet 56 in the left-right direction, and is used to guide the air flowing out of the volute outlet 5102 to the air outlet 56. The inner surface of the first noise reduction and airflow guiding device 53, the volute outlet 5102, the air outlet 56, and the housing form an airflow channel 541, and the flow area of ​​the airflow channel 541 tends to decrease.

[0141] In this embodiment, the first noise reduction and airflow guiding device 53 is used to guide the air flowing out of the volute outlet 5102. The air flowing out of the volute outlet 5102 can flow towards the air outlet 56 along the guiding channel formed by the first noise reduction and airflow guiding device 53 (or the first noise reduction and airflow guiding device 53 in conjunction with the air supply housing 50). During the process of the air flowing through the first noise reduction and airflow guiding device 53, the first noise reduction and airflow guiding device 53 can be used to guide and reduce the noise of the air flowing out of the volute outlet 5102.

[0142] Specifically, the first noise reduction and airflow guiding device 53 is obliquely disposed between the volute outlet 5102 and the air outlet 56 in the left-right direction, and is used to guide the airflow flowing out of the volute outlet 5102 to the air outlet 56. When the airflow flowing out of the volute outlet 5102 flows along the first noise reduction and airflow guiding device 53 to the air outlet 56, the first noise reduction and airflow guiding device 53 can guide the airflow, so that the airflow can flow efficiently and smoothly, avoiding turbulence, eddies and pressure changes during the gas flow process, thereby avoiding the generation of obvious aerodynamic noise, that is, directly and effectively controlling the generation of noise from the source, and thus achieving a better quiet effect.

[0143] Specifically, the inner surface of the first noise reduction and airflow guiding device 53, the volute outlet 5102, the air outlet 56 of the air supply housing 50, and the air supply housing 50 form an airflow channel 541. Along the airflow direction, the flow area of ​​the airflow channel 541 tends to decrease. When the airflow passes through the gradually narrowing airflow channel 541, the airflow volume and air pressure of the airflow flowing out of the volute outlet 5102 can be gradually increased by the guiding effect of the first noise reduction and airflow guiding device 53. This allows the airflow to maintain a high static pressure when it flows into the air supply duct 52 downstream of the air outlet 56 of the air supply housing 50. Even after the pipe resistance loss of the air supply duct 52, the airflow supplied to the indoor space at the terminal device can still have sufficient air pressure and airflow, thereby ensuring the effective regulation of indoor air parameters (temperature and / or humidity and / or cleanliness).

[0144] In one embodiment, a first noise reduction and airflow guiding device 53 is provided between the volute outlet 5102 and the air outlet 56. The first noise reduction and airflow guiding device 53 includes at least one noise reduction and airflow guiding plate 530. The noise reduction and airflow guiding plate 530 includes a perforated plate body and a cavity surrounded by the perforated plate body. The cavity body is provided with sound-absorbing cotton and 542 / or sound-insulating cotton. Alternatively, the noise reduction and airflow guiding plate 530 includes a plate body and sound-absorbing cotton and 542 / or sound-insulating cotton disposed on the inner side of the plate body. The plate body is planar or arc-shaped.

[0145] In this embodiment, when a first noise reduction and flow guiding device 53 is provided between the volute outlet 5102 and the air outlet 56, the first noise reduction and flow guiding device 53 may specifically include at least one noise reduction and flow guiding plate 530. The noise reduction and flow guiding plate 530 may be disposed in the flow path between the volute outlet 5102 and the air outlet 56, so that the airflow from the volute outlet 5102 can at least partially flow through the noise reduction and flow guiding plate 530 before flowing to the air outlet 56.

[0146] Specifically, the noise reduction guide plate 530 can be a hollow structure with a certain thickness. The noise reduction guide plate 530 can include a plate with openings, which can form a hollow structure, with a cavity inside. At least one of a sound-absorbing material and a sound-insulating material is disposed within the cavity. The sound-absorbing material can absorb the energy of sound waves, reducing sound wave reflection and scattering, thereby reducing noise intensity. The sound-insulating material can effectively block the propagation of sound waves, surrounding the noise source and reducing noise transmission.

[0147] Furthermore, the noise reduction guide plate 530 can also take other forms. For example, the noise reduction guide plate 530 may include a plate with a certain thickness, the plate having opposing inner and outer sides, the inner side being the side that can contact the airflow flowing out of the volute outlet 5102. At least one of sound-absorbing cotton and sound-insulating cotton may be provided on the inner side to further reduce noise.

[0148] The specific structure of the noise reduction guide plate 530 can vary depending on the airflow direction of the volute outlet 5102, the structure of the combined air supply housing 50, and the specific location of the air outlet 56. This application does not impose specific limitations on this. For example, the surface of the noise reduction guide plate 530 can be planar or arc-shaped. When the surface of the noise reduction guide plate 530 is planar or arc-shaped, the airflow passing through this structure is less likely to generate significant turbulence, eddies, or cause sudden pressure changes. Of course, in this embodiment, it is not excluded that the plate structure can be other structures that are beneficial for airflow guidance and noise reduction.

[0149] In one embodiment, a first noise reduction and airflow guiding device 53 is provided between the volute outlet 5102 and the air outlet 56. The first noise reduction and airflow guiding device 53 includes at least two noise reduction and airflow guiding plates 530, which are arranged relatively at intervals. The distance between the two noise reduction and airflow guiding plates 530 tends to decrease along the direction of airflow. The two noise reduction and airflow guiding plates 530, the volute outlet 5102, the air outlet 56, and the housing form an airflow channel 541, and the flow area of ​​the airflow channel 541 tends to decrease.

[0150] In this embodiment, when a first noise reduction and airflow guiding device 53 is provided between the volute outlet 5102 and the air outlet 56, the first noise reduction and airflow guiding device 53 may specifically include at least two noise reduction and airflow guiding plates 530. Taking the first noise reduction and airflow guiding device 53 as having two noise reduction and airflow guiding plates 530 as an example, namely a first noise reduction and airflow guiding plate 530 and a second noise reduction and airflow guiding plate 530, the first noise reduction and airflow guiding plate 530 and the second noise reduction and airflow guiding plate 530 are arranged relatively at intervals, and the distance between the two noise reduction and airflow guiding plates 530 tends to decrease along the airflow direction, so that the flow area of ​​the airflow channel 541 formed by the two noise reduction and airflow guiding plates 530, the volute outlet 5102, the air outlet 56, and the air supply housing 50 tends to decrease. In other words, through the clever arrangement of the first and second noise-reducing guide plates 530, a gradually narrowing airflow channel 541 is formed between the two noise-reducing guide plates 530 and the air supply housing 50, connecting the volute outlet 5102 and the air outlet 56. When the airflow from the volute outlet 5102 flows through this airflow channel 541, it not only avoids turbulence, eddies, and pressure changes during gas flow, thus avoiding significant aerodynamic noise, but also gradually increases the airflow volume and air pressure of the airflow from the volute outlet 5102. This allows the airflow to maintain a high static pressure when it flows into the air supply duct 52 downstream of the air outlet 56 of the air supply housing 50. Even after pipe resistance losses in the air supply duct 52, the airflow supplied to the indoor space at the terminal device still has sufficient air pressure and airflow, thereby ensuring effective regulation of indoor air parameters (temperature and / or humidity and / or cleanliness).

[0151] Alternatively, it can be understood from another perspective: compared to existing technologies that simply reduce noise and are prone to causing losses in wind pressure and air volume, in this application, by setting the first noise reduction and airflow guiding device 53, not only will it not damage wind pressure and air volume, but it can also improve the ability of the fan to generate static pressure in the air supply duct 52, thereby increasing wind pressure and air volume.

[0152] In one embodiment, a first noise reduction and flow guiding device 53 is provided between the volute outlet 5102 and the air outlet 56. There are two air supply fans 51, two air outlets 56, and two first noise reduction and flow guiding devices 53. The two air supply fans 51 are arranged side by side, and the two air supply fans 51, the two first noise reduction and flow guiding devices 53, and the two air outlets 56 are respectively provided.

[0153] like Figure 5As shown, for the suspended ceiling 6 installed on the balcony 600, its height is usually less than 350 mm, making it difficult for existing large fans to be fully installed above the suspended ceiling 6. In a specific scenario where there is a need to install a clothes rack or other equipment below the suspended ceiling 6, the height of the suspended ceiling 6 usually needs to be further reduced, typically controlled within 250 mm. Therefore, it becomes even more difficult for existing large fans to be fully installed above the suspended ceiling 6.

[0154] In this embodiment, the air supply fan 51 can be composed of two smaller fans. Combining two smaller fans with a single larger fan reduces the installation size of the air supply fan 51, making the air supply housing 50 as small as possible, thus allowing the air supply fan 51 to be installed completely above the ceiling 6. Furthermore, combining two smaller fans with a single larger fan also reduces the noise generated during operation. Verification shows that when the large fan and the two smaller fans operate at the same speed, the noise generated by the large fan is at least 3 decibels higher.

[0155] For the air supply fan 51, the thickness of its impeller is relatively small compared to the size of its outer periphery. To minimize the size required by the air supply device 5 in the height direction Y, the rotation axis of the impeller of the air supply fan 51 extends along the longitudinal direction, i.e., the air supply fan 51 is installed horizontally. Of course, in this application embodiment, it is not excluded that the rotation axis of the impeller of the air supply fan 51 forms a certain angle with the longitudinal direction. In principle, any embodiment that can ensure that the air supply housing 50 of the air supply device 5 can be installed above the ceiling 6 can be applied to this application embodiment. Among them, when the rotation axis of the impeller of the air supply fan 51 extends completely along the longitudinal direction, the size required by the air supply device 5 in the height direction Y can be minimized.

[0156] In specific installation, the two air supply fans 51 are installed horizontally side by side. When there are two air supply fans 51, there are two air outlets 56 on the air supply housing 50, and there are two first noise reduction and air guiding devices 53.

[0157] Two air supply fans 51 are respectively connected to two air outlets 56 via corresponding first noise reduction and flow guiding devices 53. One air outlet 56 is connected to the volute outlet 5102 of the first volute 511 via a first noise reduction and flow guiding device 53, and the other air outlet 56 is connected to the volute outlet 5102 of the second volute 512 via a first noise reduction and flow guiding device 53. This ensures that the air flowing out of the volute outlet 5102 can be directly, accurately, independently and efficiently guided to the corresponding air outlet 56 by the corresponding first noise reduction and flow guiding devices 53. This allows the air flowing out of the air supply fans 51 to exit the air supply housing 50 with a shorter independent path, resulting in smooth airflow and good air volume. This, in turn, helps to ensure that the air supply duct 52 connected to the air outlet 56 has sufficient air pressure and air volume.

[0158] Specifically, regarding the isolation between the air outlet 56 and the volute outlet 5102 via the first noise reduction and airflow guiding device 53, the air flowing from the volute outlets 5102 of the two air supply fans 51, after being isolated by the first noise reduction and airflow guiding device 53, will not interfere with each other, and the loss of air volume and air pressure is not easily caused. Furthermore, the first noise reduction and airflow guiding device 53 can increase the air volume and air pressure flowing from the volute outlet 5102 to the air outlet 56. In actual use, after the air supply fans 51 are started, the air volume and air pressure of the air flowing from the volute outlets 5102 can be increased; and after the air is noise-reduced, it can independently and efficiently flow through the first noise reduction and airflow guiding device 53 to the air outlet 56 and then enter its respective air supply duct 52, and then flow to the corresponding indoor space.

[0159] In one embodiment, a second noise reduction and air guiding device 54 is provided between the side of the volute of the blower 51 near the air inlet 55 and the air inlet 55. The rotation axis of the impeller extends longitudinally, and the second noise reduction and air guiding device 54 is obliquely arranged longitudinally between the air inlet 55 and the volute inlet 5101 to guide the air flowing in from the air inlet 55 to the volute inlet 5101. The volute inlet 5101 is downwardly oriented. The airflow device 54 is obliquely disposed from top to bottom between the air inlet 55 and the volute inlet 5101. The second noise reduction and airflow guiding device 54 includes at least one noise reduction and airflow guiding plate 530. The noise reduction and airflow guiding plate 530 includes a plate body with openings and a cavity surrounded by the plate body with openings. The cavity is provided with sound-absorbing cotton and 542 / or sound-insulating cotton. Alternatively, the noise reduction and airflow guiding plate 530 includes a plate body and sound-absorbing cotton and 542 / or sound-insulating cotton disposed on the windward side of the plate body. The plate body is planar or arc-shaped.

[0160] In the case where a second noise reduction and flow guiding device 54 is provided between the side of the volute of the blower 51 near the air inlet 55 and the air inlet 55, the rotation shaft of the impeller extends in the longitudinal direction, and the second noise reduction and flow guiding device 54 is obliquely arranged in the longitudinal direction between the air inlet 55 and the volute inlet 5101, for guiding the air flowing in from the air inlet 55 to the volute inlet 5101.

[0161] In this embodiment, to achieve better noise reduction, the air supply device 5, which has an air supply housing 50, can be installed completely above the ceiling 6. To install the air supply device 5 on the ceiling 6, which has a limited height, the air supply fan 51 is installed horizontally.

[0162] Specifically, for the air supply fan 51, the thickness of its impeller is relatively small compared to the size of its outer periphery. To minimize the size required by the air supply device 5 in the height direction Y, the rotation axis of the impeller of the air supply fan 51 extends along the longitudinal direction. Of course, in this application embodiment, it is not excluded that the rotation axis of the impeller of the air supply fan 51 forms a certain angle with the longitudinal direction. In principle, any embodiment that can ensure that the air supply housing 50 of the air supply device 5 can be installed above the ceiling 6 can be applied to this application embodiment. Among them, when the rotation axis of the impeller of the air supply fan 51 extends completely along the longitudinal direction, the size required by the air supply device 5 in the height direction Y can be minimized.

[0163] The number of volute inlets 5101 of the blower 51 can be one. The volute inlet 5101 can be located on the upper surface of the volute, that is, the volute inlet 5101 is set upward; or, the volute inlet 5101 can be located on the lower surface of the volute, that is, the volute inlet 5101 is set downward.

[0164] Taking the rectangular box-like structure of the air supply housing 50 as an example, it has opposing upper and lower panels, opposing left and right side panels, and opposing front and rear side panels. The volute inlet 5101 can be directly opposite the upper or lower panel of the air supply housing 50.

[0165] The air inlet 55 of the air supply housing 50 is located on the side plate of the air supply housing 50, for example, a left side plate. There is a certain height and angle difference between the air inlet 55 and the volute inlet 5101. In order to efficiently, accurately and directly guide the air flowing in from the air inlet 55 to the volute inlet 5101, a second noise reduction and air guiding device 54 can be provided between the air inlet 55 and the volute inlet 5101. The second noise reduction and air guiding device 54 is obliquely arranged in the longitudinal direction between the air inlet 55 and the volute inlet 5101, and is used to guide the air flowing in from the air inlet 55 to the volute inlet 5101.

[0166] For example, when the volute inlet 5101 is downwardly oriented, the second noise reduction and airflow guiding device 54 is obliquely positioned from top to bottom between the air inlet 55 and the volute inlet 5101. Alternatively, when the volute inlet 5101 is upwardly oriented, the second noise reduction and airflow guiding device 54 is obliquely positioned from bottom to top between the air inlet 55 and the volute inlet 5101.

[0167] In this embodiment, by setting the second noise reduction and flow guiding device 54, the airflow direction can be accurately guided, and the noise caused by turbulence, eddies and pressure changes during the airflow process can be effectively reduced. In addition, when the second noise reduction and flow guiding device 54 is obliquely set between the air inlet 55 and the volute inlet 5101, a dedicated inlet channel can be formed between the second noise reduction and flow guiding device 54 and the air supply housing 50. The flow cross section of the inlet channel gradually decreases, which is beneficial to increasing the air volume and air pressure of the fluid.

[0168] In this embodiment, the second noise reduction and flow guiding device 54 may include at least one noise reduction and flow guiding plate 530, and the specific form of the noise reduction and flow guiding plate 530 may be the same as or similar to the form of the noise reduction and flow guiding plate 530 in the first noise reduction and flow guiding device 53.

[0169] The noise reduction guide plate 530 can be a hollow structure with a certain thickness. The noise reduction guide plate 530 can include a plate with openings, which can form a hollow structure, with a cavity inside. At least one of a sound-absorbing material and a sound-insulating material is disposed within the cavity. The sound-absorbing material can absorb the energy of sound waves, reducing sound wave reflection and scattering, thereby reducing noise intensity. The sound-insulating material can effectively block the propagation of sound waves, surrounding the noise source and reducing noise transmission.

[0170] Furthermore, the noise reduction deflector 530 can also take other forms. For example, the noise reduction deflector 530 may include a plate with a certain thickness, having opposing windward and leeward sides, with the windward side being the side that can contact the airflow. At least one of sound-absorbing cotton and sound-insulating cotton may be provided on the windward side to achieve further noise reduction.

[0171] The specific structure of the noise reduction guide plate 530 can vary depending on the airflow direction of the volute inlet 5101, the structure of the air supply housing 50, and the specific location of the air inlet 55. This application does not impose specific limitations on this. For example, the surface of the noise reduction guide plate 530 can be planar or arc-shaped. When the surface of the noise reduction guide plate 530 is planar or arc-shaped, the airflow passing through this structure is less likely to generate significant turbulence, eddies, or cause sudden pressure changes. Of course, in this embodiment, it is not excluded that the plate structure can be other structures that are beneficial for airflow guidance and noise reduction.

[0172] In one specific embodiment, a second noise reduction and flow guiding device 54 can be provided between the air inlet 55 and the volute inlet 5101, and a first noise reduction and flow guiding device 53 can be provided between the volute outlet 5102 and the air outlet 56. The second noise reduction and flow guiding device 54 guides and reduces the noise of the airflow before entering the volute, and the first noise reduction and flow guiding device 53 guides and reduces the noise of the airflow flowing out of the volute outlet 5102. The combined flow guiding and noise reduction effects of the two devices are significantly better than the flow guiding and noise reduction effects of setting up a single noise reduction and flow guiding device.

[0173] It should be noted that in the description of this application, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more.

[0174] The various embodiments described in this specification are presented in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0175] The above are merely a few embodiments of this utility model. Although the embodiments disclosed in this utility model are as described above, the content is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the embodiments without departing from the spirit and scope disclosed in this utility model. However, the patent protection scope of this utility model shall still be determined by the scope defined in the appended claims.

Claims

1. An air handling system, characterized in that, The air handling system includes an air supply device and an air supply duct, wherein the air supply device is used to supply air to the indoor space through the air supply duct; The air supply device includes an air supply fan and a housing. The air supply fan is disposed inside the housing. The housing has an air inlet and an air outlet. The air outlet is used to connect with the air supply duct. Air entering from the air inlet can flow into the indoor space through the air outlet and the air supply duct under the drive of the air supply fan. The air supply duct includes a door connector, which includes a first air inlet, a door section, and a first air outlet. The first air inlet is located on one side of the door, and the first air outlet is located on the other side of the door. The door section is connected to both the first air inlet and the first air outlet and bypasses the door. Alternatively, the air supply duct includes a beam connector, which includes a second air inlet, a beam section, and a second air outlet. The second air inlet and / or the second air outlet are cylindrical or near-cylindrical. The beam section is connected to both the second air inlet and the second air outlet and bypasses the beam.

2. The air handling system as described in claim 1, characterized in that, The air supply duct includes a door access device, and the door access device is connected to and close to the side post of the door, both the first air inlet and the first air outlet.

3. The air handling system as described in claim 1, characterized in that, The air supply duct includes a door, and the first air inlet and the first air outlet are at least partially or entirely located above the suspended ceiling, while the door is located below the suspended ceiling.

4. The air handling system as described in claim 3, characterized in that, The first air inlet and the first air outlet are each provided with a downward-facing lower connecting port, and the door is provided with an upward-facing upper connecting port. The door, the first air inlet, and the first air outlet are connected through the upper connecting port and the lower connecting port.

5. The air handling system as claimed in claim 1, characterized in that, The air supply duct includes a door, the first air inlet is cylindrical, quasi-cylindrical, or cuboid, the first air outlet is cylindrical, quasi-cylindrical, or cuboid, the first air inlet is provided with at least one or at least two air inlet ports, and the first air outlet is provided with at least one or at least two air outlet ports.

6. The air handling system as claimed in claim 1, characterized in that, The air supply duct includes a door, the door portion extending longitudinally along the side post of the door, and the longitudinal height of the door portion being greater than the lateral width of the door portion.

7. The air handling system as claimed in claim 1, characterized in that, The air supply duct includes a door access device. The door access portion bypasses the side post of the door. In the airflow direction, the door access device includes a first door access portion, a second door access portion, and a third door access portion connected in sequence. The side post includes a first side side, a second side side, and a third side side that are adjacent in sequence. The first door access portion is close to or abuts the first side side, the second door access portion is close to or abuts the second side side, and the third door access portion is close to or abuts the third side side. The first door access portion and the second door access portion are connected by a first arc-shaped portion, and the second door access portion and the third door access portion are connected by a second arc-shaped portion.

8. The air handling system as claimed in claim 1, characterized in that, The air supply duct includes a beam passer, and the beam passer is close to or in contact with the beam. Along the airflow direction, the lintel includes a left lintel, a lower lintel, and a right lintel connected in sequence. The beam includes a left side, a lower side, and a right side that are adjacent in sequence. The left lintel is close to or fits against the left side, the lower lintel is close to or fits against the lower side, and the right lintel is close to or fits against the right side. The left lintel and the lower lintel are connected by a third arc-shaped section, and the lower lintel and the right lintel are connected by a fourth arc-shaped section.

9. The air handling system as claimed in claim 8, characterized in that, The inner side of the left crossbeam is tangent to the inner side of the second air inlet. The inner side of the right crossbeam is tangent to the inner side of the second air outlet.

10. The air handling system as claimed in claim 9, characterized in that, The second air inlet is provided with at least one or at least two air inlet ports, and the second air outlet is provided with at least one or at least two air outlet ports.

11. The air handling system as claimed in claim 1, characterized in that, The blower includes a volute and an impeller. The volute has a volute inlet and a volute outlet. The volute outlet is spaced at a predetermined distance from the air outlet. A first noise reduction and flow guiding device is provided between the volute outlet and the air outlet. Alternatively, the side of the volute of the blower closest to the air inlet is spaced at a predetermined distance from the air inlet, and a second noise reduction and flow guiding device is provided between the side of the volute of the blower closest to the air inlet and the air inlet.

12. The air handling system as claimed in claim 11, characterized in that, A first noise reduction and airflow guiding device is provided between the volute outlet and the air outlet. The first noise reduction and airflow guiding device is obliquely arranged between the volute outlet and the air outlet in a left-right direction, and is used to guide the air flowing out of the volute outlet to the air outlet. The inner surface of the first noise reduction and airflow guiding device, the volute outlet, the air outlet, and the housing form an airflow channel, and the flow area of ​​the airflow channel tends to decrease.

13. The air handling system as claimed in claim 11, characterized in that, A first noise reduction and airflow guiding device is provided between the volute outlet and the air outlet. The first noise reduction and flow guiding device includes at least one noise reduction and flow guiding plate; The noise reduction guide plate includes a perforated plate and a cavity enclosed by the perforated plate. The cavity is provided with sound-absorbing cotton and / or sound-insulating cotton. Alternatively, the noise reduction guide plate includes a plate and sound-absorbing cotton and / or sound-insulating cotton disposed on the inner side of the plate. The plate is planar or arc-shaped.

14. The air handling system as claimed in claim 11, characterized in that, A first noise reduction and airflow guiding device is provided between the volute outlet and the air outlet. The first noise reduction and airflow guiding device includes at least two noise reduction and airflow guiding plates, which are arranged relatively at intervals, and the distance between the two noise reduction and airflow guiding plates tends to decrease along the direction of airflow. The two noise-reducing guide plates, the volute outlet, the air outlet, and the housing form an airflow channel, and the flow area of ​​the airflow channel tends to decrease.

15. The air handling system as claimed in claim 11, characterized in that, A first noise reduction and airflow guiding device is provided between the volute outlet and the air outlet. The number of air supply fans is 2, the number of air outlets is 2, the number of first noise reduction and air diversion devices is 2, the two air supply fans are arranged side by side, and the two air supply fans, the two first noise reduction and air diversion devices, and the two air outlets are respectively arranged correspondingly.

16. The air handling system as claimed in claim 11, characterized in that, A second noise reduction and airflow guiding device is provided between the side of the volute of the blower near the air inlet and the air inlet. The impeller's rotation axis extends longitudinally, and the second noise reduction and airflow guiding device is obliquely disposed longitudinally between the air inlet and the volute inlet to guide the air flowing in from the air inlet to the volute inlet. The volute inlet is positioned downwards, and the second noise reduction and airflow guiding device is obliquely positioned from top to bottom between the air inlet and the volute inlet. The second noise reduction and flow guiding device includes at least one noise reduction and flow guiding plate. The noise reduction guide plate includes a perforated plate and a cavity enclosed by the perforated plate. The cavity is provided with sound-absorbing cotton and / or sound-insulating cotton. Alternatively, the noise reduction guide plate includes a plate and sound-absorbing cotton and / or sound-insulating cotton disposed on the windward side of the plate. The plate is planar or arc-shaped.

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