A multi-swirling array air supply device with adjustable swirl direction and its control method

Abstract

This invention relates to a multi-swirl array air supply device with adjustable swirl direction and its control method, belonging to the field of air conditioning technology. The air supply device includes an air outlet housing, a swirl air supply unit, and a swirl direction adjustment unit. One end of the air outlet housing has a mounting surface with several air outlets. The swirl air supply unit is installed within each air outlet and includes a hub, multiple blades mounted circumferentially around the hub, and a wind ring disposed around the outer periphery of the blades. Each swirl blade has a rotating shaft at its central axis, and the root of the blade is hinged to the hub via the rotating shaft. The wind ring has multiple openings, and the side of the rotating shaft away from the hub extends outward through the openings. The swirl direction adjustment unit is connected to the end of the rotating shaft away from the hub and is used to drive the rotating shaft to rotate and adjust the blade swirl direction. The swirl direction adjustment unit includes an adjustment ring, a straight slot, and a driver. Each air outlet of this air supply device can independently adjust the blade angle, allowing different air outlets to form differentiated swirl direction combinations and switching the air supply mode as needed.

Description

Technical Field

[0001] This invention belongs to the field of air conditioning technology, specifically relating to a multi-vortex array air supply device with adjustable vortex direction and its control method. Background Technology

[0002] In the field of ventilation and air conditioning, the airflow organization of the air supply terminal device has a crucial impact on indoor thermal comfort, air quality, and system energy consumption. Swirl vents are widely used in large-space buildings (such as industrial plants, stadiums, and shopping malls) due to their advantages such as high induction ratio, rapid air jet attenuation, and uniform temperature field. However, with the diversification of building space functions and changes in indoor dynamic loads, traditional swirl vents with a single airflow pattern are no longer sufficient to meet the differentiated air supply needs under various operating conditions.

[0003] There are existing attempts at adjustable swirl-flow air outlets. For example, Chinese invention patent CN109442715B provides an air supply function adjustment device, which uses several guide vanes vertically arranged around the air outlet. A controller drives the guide vanes to deflect synchronously around a rotation axis perpendicular to the plane of the air outlet. By changing the deflection angle of the vanes, the air supply direction is adjusted, thereby achieving switching of the air supply angle between three modes: cold air, hot air, and ventilation. However, in this scheme, all guide vanes are driven synchronously by the same turntable, and all vanes always deflect in the same direction with the same deflection angle. Therefore, the entire air outlet can only output airflow in a single swirl direction at any given time, making it impossible to form differentiated swirl combinations in different areas of the outlet, and making it difficult to achieve fine control of the airflow organization in the space.

[0004] Therefore, how to maintain good mixing characteristics of swirl nozzles while flexibly switching between multiple airflow organization modes is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a multi-swirl array air supply device and its control method with adjustable swirl direction combinations. By configuring an independent swirl direction adjustment unit for each swirl air supply unit and driving the independent rotation of each blade shaft, independent adjustment of the blade angle within a single air supply outlet and differentiated combinations of swirl directions between different air supply outlets are achieved. This allows for flexible switching of multiple airflow organization modes while maintaining good mixing characteristics of the swirl air outlets, meeting differentiated air supply needs under different working conditions, and improving the ability to finely control indoor airflow organization.

[0006] This invention provides a multi-swirling array air supply device with adjustable swirl direction, comprising: an air outlet shell with a mounting surface at one end, the mounting surface having a plurality of air outlets; a swirl air supply unit, correspondingly installed within the air outlets, including a hub, a plurality of blades mounted circumferentially on the hub, and a wind ring disposed on the outer periphery of the blades, each swirl blade having a rotating shaft at its central axis, the root of the blade being hinged to the hub via the rotating shaft, the wind ring having a plurality of openings, the opening positions matching the rotating shaft, the side of the rotating shaft away from the hub extending outward through the openings; and a swirl direction adjustment unit, correspondingly provided with the swirl air supply unit, including: adjusting... A ring, coaxially sleeved on the outside of the wind ring, has at least two supports on its outer circumferential wall, all of which are mounted on the same annular plane. An adjusting ring is assembled on each support to rotate circumferentially relative to the wind ring within the annular plane. Multiple straight slots are provided, positioned between the wind ring and the adjusting ring. The positions of the straight slots match the blade rotation axis, with one end of the straight slot fixedly connected to the corresponding rotation axis and the other end connected to the adjusting ring. A driver, whose output shaft is connected to the adjusting ring, drives the adjusting ring to rotate circumferentially relative to the wind ring, thereby rotating the straight slots and the rotation axis and adjusting the blade rotation direction.

[0007] This technical solution configures an independent swirl direction adjustment unit for each swirl air supply unit and drives the independent rotation of each blade shaft, realizing independent adjustment of the blade angle within a single air supply outlet and differentiated combinations of swirl directions between different air supply outlets. This allows for flexible switching of multiple airflow organization modes while maintaining good mixing characteristics of the swirl air outlet, meeting differentiated air supply needs under different working conditions, and improving the ability to finely control indoor airflow organization.

[0008] In some embodiments, the fan ring has a limiting groove along its circumferential direction, and the adjusting ring is connected to a lever. One end of the lever is connected to the output shaft of the driver, and the other end is slidably connected in the limiting groove.

[0009] This technical solution can limit the rotational output of the driver within a preset angle range, preventing the adjusting ring from over-travel and causing excessive blade deviation or mechanism jamming.

[0010] In some embodiments, each straight slot has a linkage rod connected to the end away from the rotating shaft, and multiple linkage rods are distributed circumferentially inside the adjusting ring to transmit the rotational force of the adjusting ring to the rotating shaft.

[0011] This technical solution uses a linkage rod to directly transmit the circumferential rotational force of the regulating ring to each straight slot, so that the driving force of the regulating ring can be distributed to each blade shaft simultaneously and evenly, ensuring the consistency of the deflection angle of each blade in the same air supply unit and avoiding asynchronous blade rotation due to differences in transmission paths.

[0012] In some embodiments, a groove is provided at the connection between the straight slot and the rotating shaft, and a protruding key matching the groove is provided at the end of the rotating shaft near the straight slot. The protruding key is fitted into the groove to restrict relative circumferential rotation between the rotating shaft and the straight slot, so as to achieve synchronous deflection of the two.

[0013] This technical solution relies on the circumferential limiting fit of the convex key in the groove to eliminate the relative rotational freedom of the connection between the rotating shaft and the straight groove in the rotational direction.

[0014] In some embodiments, when applied to a side-supply air environment, the mounting surface is set to a rectangle and the air outlets are distributed in a linear array; when applied to a top-supply air environment, the mounting surface is set to a circle and the air outlets are arranged in a center-periphery layout, including a central unit located at the center and several peripheral units evenly arranged around the central unit. In some embodiments, a control unit and a sensing unit are also included. The control unit is electrically connected to each swirl adjustment unit and is used to control the operation of the swirl adjustment unit to adjust the swirl combination of each swirl air supply unit. The sensing unit is communicatively connected to the control unit and is used to monitor environmental parameters and transmit the environmental parameters to the control unit, providing a judgment benchmark for the control unit to independently adjust the blade swirl of each swirl air supply unit and match the swirl combination.

[0015] This technical solution detects environmental parameters through a sensing unit and matches the target air supply mode with a control unit. Based on a preset rotation direction configuration table, it outputs corresponding adjustment commands, enabling each rotation direction adjustment unit to execute rotation direction combination adjustments according to the instructions, thus realizing closed-loop control from environmental perception to action execution.

[0016] Furthermore, this invention also provides a multi-swirl array air supply control method with adjustable swirl direction combination, applied to the aforementioned multi-swirl array air supply device with adjustable swirl direction combination, comprising the following steps: acquiring environmental parameters: the sensing unit detects indoor environmental parameters and transmits the environmental parameter data to the control unit; outputting control commands: the control unit, according to a preset swirl direction configuration table, combines the indoor environment and its parameter data, matches the target air supply mode, determines the swirl direction combination of the swirl air supply units, and outputs the adjustment commands for each swirl direction adjustment unit; adjusting the swirl direction combination: the swirl direction adjustment unit adjusts the blade swirl direction of each swirl air supply unit according to the adjustment commands from the control unit.

[0017] In some embodiments, the swirl configuration table includes each air supply mode and the corresponding swirl air supply unit swirl combination. When applied to a side air supply environment, the air supply modes include long-range air supply mode, rapid diffusion mixing air supply mode, and balanced air supply mode. In the long-range air supply mode, the blades of the swirl air supply units have the same swirl direction. In the rapid diffusion mixing air supply mode, the blades of two adjacent swirl air supply units have opposite swirl directions. In the balanced air supply mode, every n consecutive swirl air supply units form a group, and the swirl air supply units in each group maintain the same swirl direction. The swirl air supply units in two adjacent groups have opposite swirl directions, where n≥3. When applied to a top air supply environment, the air supply modes include mixing diffusion air supply mode and concentrated downward air supply mode. In the mixing diffusion air supply mode, the blades of the central unit have opposite swirl directions to the blades of the peripheral units. In the concentrated downward air supply mode, the blades of all swirl air supply units have the same swirl direction.

[0018] This technical solution defines differentiated rotation modes for different environments of side air supply and top air supply by pre-setting multiple air supply modes and their corresponding rotation combination configuration tables. This allows the device to quickly switch to the appropriate rotation combination according to the application scenario, thus expanding the working condition adaptability of the air supply device.

[0019] In some embodiments, the method for the sensing unit to detect indoor environmental parameters in the step of acquiring environmental parameters includes: using a temperature sensor to detect indoor temperature, using a CO2 sensor to collect indoor CO2 concentration, using an infrared array human body induction sensor to divide the detection area into several grid units, and detecting whether there are people and their activity status in each grid unit, so as to collect indoor personnel distribution information.

[0020] This technical solution can acquire multi-dimensional environmental data, providing a comprehensive testing basis for the accurate matching and differentiated control of subsequent air supply modes.

[0021] In some embodiments, after receiving environmental parameters, the control unit first processes the data, and then matches the target air supply mode based on the data processing results; the data processing method includes: based on the measured indoor temperature With set temperature Calculate temperature deviation ,Right now Based on data from the infrared array human body sensing sensor, the timing begins when all indoor grid cells are detected as unoccupied, thus obtaining the continuous unoccupied time. When two or more adjacent grid cells detect people, it is determined that there is a concentration of people indoors, indicating that the area is relatively densely populated.

[0022] This technical solution calculates environmental parameters by measuring temperature deviation, continuous unattended time, and personnel concentration status, and then performs structured processing. This enables the control unit to accurately match the target air supply mode based on the processed results, thereby improving the pertinence and rationality of air supply decisions.

[0023] Based on the above scheme, the multi-swirl array air supply device with adjustable swirl combination in this embodiment of the invention, by setting an independent swirl adjustment unit on the outside of each swirl air supply unit, and the adjustment unit being connected to the rotating shaft of each blade, can drive the rotating shaft to rotate, thus realizing the independent adjustment of the angle of a single blade, rather than all blades being linked synchronously; since the mounting surface of the air outlet shell has several air outlets, and each air outlet is equipped with an independent swirl air supply unit, the blades in different air outlets can be adjusted to different swirl angles, thereby forming differentiated swirl combinations in different areas of the air outlet at the same time, so as to flexibly switch multiple airflow organization modes according to actual working conditions, thereby realizing fine control of airflow organization in space. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the rectangular mounting surface in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the circular mounting surface in Embodiment 2 of the present invention; Figure 3 This is a schematic diagram of the structure of the swirl air supply unit and the swirl direction adjustment unit in an embodiment of the present invention; Figure 4 This is a schematic diagram of the straight slot of the rotation adjustment unit in an embodiment of the present invention; Figure 5 This is a schematic diagram of the connection between the driver and the adjusting ring of the rotation adjustment unit in an embodiment of the present invention; Figure 6 This is a flowchart of the multi-swirl array air supply control method with adjustable swirl direction in an embodiment of the present invention; Figure 7 This is a schematic diagram illustrating the calculation of blade deflection angle and swirl number in an embodiment of the present invention; Figure 8 This is a schematic diagram of the blade rotation direction of each swirl air supply unit under different air supply modes in Embodiment 1 of the present invention; Figure 9 The lower edge of the long-range air supply mode in Embodiment 1 of the present invention Axial velocity profile and streamline diagram; Figure 10The lower edge of the rapid diffusion mixing air supply mode in Embodiment 1 of the present invention Axial velocity profile and streamline diagram; Figure 11 The lower edge of the balanced air supply mode in Embodiment 1 of the present invention Axial velocity profile and streamline diagram; Figure 12 This is a schematic diagram of the blade rotation direction of each swirl air supply unit under different air supply modes in Embodiment 2 of the present invention; Figure 13 The lower edge of the mixing and diffusion air supply mode in Embodiment 2 of the present invention Axial velocity profile and streamline diagram; Figure 14 The lower edge of the concentrated sinking air supply mode in Embodiment 2 of the present invention Axial velocity profile and streamline diagram; Figure 15 This is a schematic diagram of the air outlet and swirl air supply unit arranged in a multi-row linear array in Embodiment 3 of the present invention; Figure 16 This is a schematic diagram of the hexagonal array of air outlets and swirl air supply units in Embodiment 3 of the present invention; Figure 17 This is a schematic diagram of the air outlet and swirl air supply unit arranged in a multi-ringed array in Embodiment 3 of the present invention; Figure 18 This is a schematic diagram of the cross-shaped array of air outlets and swirl air supply units in Embodiment 3 of the present invention.

[0025] In the picture: 1. Air outlet housing; 2. Swirl air supply unit; 3. Swirl direction adjustment unit; 11. Mounting surface; 21. Hub; 22. Blade; 23. Shaft; 24. Wind ring; 241. Limiting groove; 31. Adjusting ring; 32. Support seat; 33. Straight slot; 34. Driver; 35. Linkage rod; 36. Pulley; 37. Crank; 38. Connecting rod; 331. Slot. Detailed Implementation

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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. Therefore, they should not be construed as limitations on this invention.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] In one embodiment of the multi-swirling array air supply device and its control method with adjustable swirl direction of the present invention, such as Figure 1 or Figure 2 As shown, the multi-swirling array air supply device with adjustable swirl direction includes an air outlet housing 1, a swirling air supply unit 2, and a swirl direction adjustment unit 3; wherein, one end of the air outlet housing 1 is provided with a mounting surface 11, and the mounting surface 11 has several air outlets; as shown Figure 3 As shown, the swirl air supply unit 2 is installed inside the air outlet and includes a hub 21, multiple blades 22 installed around the hub 21, and a wind ring 24 set around the outer periphery of the blades 22. Each swirl blade 22 has a rotating shaft 23 at its central axis. The root of the blade 22 is hinged to the hub 21 through the rotating shaft 23. The wind ring 24 has multiple openings, the positions of which match the rotating shaft 23. The side of the rotating shaft 23 away from the hub 21 extends outward through the openings. The swirl direction adjustment unit 3 is set correspondingly to the swirl air supply unit 2. The swirl direction adjustment unit 3 is connected to the end of the rotating shaft 23 away from the hub 21 and is used to drive the rotating shaft 23 to rotate in order to adjust the swirl direction of the blades 22.

[0031] In the above illustrative embodiments, the multi-swirl array air supply device with adjustable swirl combination provided by the present invention has an independent swirl adjustment unit 3 set on the outside of each swirl air supply unit 2, and the adjustment unit is connected to the rotating shaft 23 of each blade 22, which can drive the rotating shaft 23 to rotate. Therefore, the angle of a single blade 22 can be adjusted independently, rather than all blades 22 being linked synchronously. Since the mounting surface 11 of the air outlet shell 1 has several air outlets, and each air outlet is equipped with an independent swirl air supply unit 2, the blades 22 in different air outlets can be adjusted to different swirl angles, thereby forming differentiated swirl combinations in different areas of the air outlet at the same time. According to the actual working conditions, multiple airflow organization modes can be flexibly switched, thereby achieving fine control of the airflow organization in the space.

[0032] It should be noted that the air vent housing 1 is also provided with an air inlet that connects to the air duct. The air inlet can be located on the side wall or top of the air vent housing 1, and the specific location can be adjusted according to the actual installation requirements.

[0033] In some embodiments, such as Figure 3 As shown, the rotation adjustment unit 3 includes: an adjustment ring 31, which is coaxially sleeved on the outside of the wind ring 24. At least two support seats 32 are provided on the outer peripheral wall of the wind ring 24, and all support seats 32 are installed on the same annular plane. The adjustment ring 31 is assembled on each support seat 32 to rotate circumferentially relative to the wind ring 24 in the annular plane; a straight slot 33, which is provided in multiples, and multiple straight slots 33 are provided between the wind ring 24 and the adjustment ring 31. The position of the straight slot 33 matches the rotation shaft 23 of the blade 22. One end of the straight slot 33 is fixedly connected to the corresponding rotation shaft 23, and the other end is connected to the adjustment ring 31; a driver 34, the output shaft of which is connected to the adjustment ring 31 and is used to drive the adjustment ring 31 to rotate circumferentially relative to the wind ring 24, so as to drive the straight slot 33 and the rotation shaft 23 to rotate, thereby adjusting the rotation direction of the blade 22. In this embodiment, by adjusting the ring 31 to rotate circumferentially relative to the wind ring 24 within the annular plane defined by the support 32, the straight slot 33 fixedly connected to the rotating shaft 23 can be deflected, thereby converting the single rotation driving force into the synchronous angle adjustment of each rotating shaft 23, realizing the consistent and stable adjustment of the rotation direction of all blades 22 in the air supply unit, and ensuring the uniformity of the rotation direction of the airflow output by the unit.

[0034] As an illustrative embodiment, the driver 34 employs a miniature stepper motor.

[0035] In some embodiments, such as Figure 3As shown, the fan ring 24 has a limiting groove 241 along its circumferential direction. An adjusting ring 31 is connected to a lever 36. One end of the lever 36 is connected to the output shaft of the driver 34, and the other end is slidably connected within the limiting groove 241, reciprocating within it. By using the limiting groove 241 on the fan ring 24 to physically constrain the sliding stroke of the lever 36, the rotational output of the driver 34 can be limited to a preset angle range, preventing the adjusting ring 31 from over-travel and causing the blades 22 to deflect excessively or the mechanism to jam, thus improving the safety and accuracy of the rotation adjustment process. When the lever 36 slides to the end of the limiting groove 241, the driver 34 stops operating, the adjusting ring 31 reaches its limit position, and the blades 22 deflect to the forward or reverse deflection position, causing the air supply unit to rotate clockwise or counterclockwise. Because the end position of the limiting groove 241 is precisely fixed by the mechanical structure, the limit positions of all rotation adjustment mechanisms are the same.

[0036] In some embodiments, such as Figure 3 As shown, each straight slot 33 has a linkage rod 35 connected to the end away from the rotating shaft 23. Multiple linkage rods 35 are circumferentially distributed inside the adjusting ring 31 to transmit the rotational force of the adjusting ring 31 to the rotating shaft 23. By directly transmitting the circumferential rotational force of the adjusting ring 31 to each straight slot 33 through the linkage rods 35, the driving force of the adjusting ring 31 can be simultaneously and evenly distributed to the rotating shaft 23 of each blade 22, ensuring the consistency of the deflection angle of each blade 22 within the same air supply unit and avoiding asynchronous rotation of the blades 22 due to differences in the transmission path.

[0037] In some embodiments, such as Figure 4 As shown, a groove 331 is provided at the connection between the straight slot 33 and the rotating shaft 23. A convex key matching the groove 331 is provided at the end of the rotating shaft 23 near the straight slot 33. The convex key is fitted inside the groove 331 to restrict relative circumferential rotation between the rotating shaft 23 and the straight slot 33, achieving synchronous deflection. Relying on the circumferential limiting fit of the convex key within the groove 331, the relative rotational freedom in the rotational direction at the connection between the rotating shaft 23 and the straight slot 33 is eliminated, ensuring that the deflection angle of the straight slot 33 can be transmitted to the rotating shaft 23 without delay or slippage, thus improving the response accuracy and transmission reliability of the blade 22 angle adjustment.

[0038] As an illustrative embodiment, the groove 331 and the convex key adopt a cross-shaped fit, but a straight fit, a star-shaped fit, a rectangular fit, etc., can also be adopted, as long as they can prevent relative circumferential rotation between the two.

[0039] In some embodiments, such as Figure 3As shown, a transmission component is provided between the output shaft of the driver 34 and the lever 36, which transmits the driving force of the output shaft of the driver 34 to the lever 36. As an intermediate connecting component between the output shaft of the driver 34 and the lever 36, the transmission component can flexibly adapt to different installation spaces and drive layout requirements, stably transmitting the rotational power of the driver 34 to the lever 36, avoiding alignment difficulties or installation interference problems caused by a direct rigid connection between the output shaft and the lever 36.

[0040] As an illustrative example, such as Figure 5 As shown, the transmission component includes a crank 37. One end of the crank 37 is connected to the output shaft of the driver 34, and the other end is hinged to a lever 36. The transmission component also includes a connecting rod 38, which is hinged between the crank 37 and the lever 36.

[0041] In some embodiments, a control unit is further included. The control unit is electrically connected to each swirl air supply unit 2 and is used to independently control the opening and closing of each swirl air supply unit 2. The control unit is also electrically connected to the swirl direction adjustment unit 3 and is used to control the operation of the swirl direction adjustment unit 3 to adjust the swirl direction combination of each swirl air supply unit 2. By electrically connecting each swirl air supply unit 2 and the corresponding swirl direction adjustment unit 3, the control unit can independently control the opening and closing state of each air supply unit and the swirl angle of its internal blades 22, thereby realizing the combination of different air outlets to form a variety of swirl-differentiated airflow modes as needed, improving the flexibility of the overall air supply strategy.

[0042] In some embodiments, a sensing unit is also included, which is communicatively connected to the control unit. The sensing unit monitors environmental parameters and transmits these parameters to the control unit, providing a judgment benchmark for the control unit to independently adjust the rotation direction of the blades 22 of each swirl air supply unit 2 and match rotation direction combinations. By detecting environmental parameters through the sensing unit and matching the target air supply mode by the control unit, and outputting corresponding adjustment commands according to a preset rotation direction configuration table, each rotation direction adjustment unit 3 can execute rotation direction combination adjustments according to the instructions. This achieves closed-loop control from environmental perception to execution, ensuring the targeting and repeatability of air supply mode switching.

[0043] In some embodiments, the outer diameter of a single swirl air supply unit 2 (i.e., the outer diameter of the wind ring 24) can be determined according to the design air volume and outlet air velocity. To make the overall size of the array after combining multiple swirl units compact, a smaller diameter specification is preferred. The outer diameter D of the wind ring 24 is preferably 100mm or 120mm, so that the overall size of the array is suitable for conventional ceiling installation space; the ratio of the diameter d of the hub 21 to the outer diameter D of the wind ring 24 is 0.1.

[0044] In some embodiments, the center distance L between adjacent swirl air supply units 2 and the outer diameter D of the unit satisfy: D≤L≤1.5D. Wherein, L≥D ensures that each unit is geometrically independent and does not interfere with each other; L≤1.5D ensures that the rotating jets generated by adjacent units can be effectively coupled downstream, thereby achieving control of the overall flow field through different combinations of swirl directions. If L is greater than 1.5D, the airflow of each unit tends to develop independently, making it difficult to demonstrate the advantages of combined control.

[0045] In some embodiments, such as Figure 7 As shown, with the direction of the air outlet axis as... The axis, the outlet plane perpendicular to the air outlet axis is In a planar plane, the airflow is guided by blade 22 and then flows out along the direction of blade 22. The airflow velocity is... It can be decomposed into along Axial component in the axial direction and located in Tangential components in the plane , The deflection angle of blade 22 With swirl number Correspondingly, the number of swirls. The strength of a swirling flow is characterized by the ratio of its angular momentum axial flux to the product of its axial momentum axial flux and outlet radius. For the swirling air supply unit 2 described in this embodiment, the swirling number... The swirl number can be determined based on its geometric parameters using formulas known in the art, as shown in equation (1): (1); In equation (1), the deflection angle of blade 22 Defined as the angle between the plane of blade 22 and the plane of the air outlet. The outer diameter of the wind ring 24 of the swirl air supply unit 2, The diameter of the hub 21 of the swirl air supply unit 2 is given. Therefore, the number of swirls... With deflection angle It increases as it increases.

[0046] Preferably, in this embodiment, the deflection angle of the blade 22 is preferably... ,when The swirl number in this embodiment can be calculated according to equation (1). The value is 0.66. At this swirl number, the swirling jet can effectively suppress the formation of the backflow zone, obtain ideal jet performance, and the supply airflow has good induction ratio and diffusion characteristics.

[0047] It should be noted that the deflection angle As a directional vector angle, the swirl blade 22 can deflect in both positive and negative directions around its central axis 23 under the drive of the swirl adjustment mechanism, respectively corresponding to... and Because the extreme positions at both ends of the limiting slide 241 are symmetrically set by the mechanical structure, and The absolute values ​​are equal. When blade 22 deflects to When the air supply unit rotates clockwise, the regulating ring 31 rotates counterclockwise, causing the blades 22 to deflect to... At this time, the air supply unit forms a counterclockwise rotation. Since the absolute value of the deflection angle is equal in both states, the swirl number... The rotation direction remains constant. Therefore, the rotation adjustment mechanism can switch between clockwise and counterclockwise rotation while maintaining the same swirling intensity by changing the direction of the deflection angle (forward or reverse).

[0048] Based on the above-mentioned multi-swirl array air supply device with adjustable swirl direction combination, such as Figure 6 As shown, this embodiment provides a multi-swirl array air supply control method with adjustable swirl direction combination, including the following steps: acquiring environmental parameters: the sensing unit detects indoor environmental parameters and transmits the environmental parameter data to the control unit; outputting control commands: the control unit matches the target air supply mode according to the environmental parameter data, determines the swirl direction combination of the swirl air supply unit 2, and outputs the adjustment commands of each swirl direction adjustment unit 3; adjusting the swirl direction combination: the swirl direction adjustment unit 3 adjusts the swirl direction of the blades 22 of each swirl air supply unit 2 according to the adjustment command of the control unit.

[0049] In some embodiments, the environmental parameters obtained in the step of acquiring environmental parameters include temperature, CO2 concentration, and personnel location distribution information; in the step of adjusting the rotation direction combination, the control unit outputs the corresponding rotation direction combination adjustment command according to the preset rotation direction configuration table. By comprehensively considering multi-dimensional environmental parameters such as temperature, CO2 concentration, and personnel location, the control unit can accurately match the air supply mode according to the preset configuration table, realizing intelligent and targeted air supply control based on personnel distribution and indoor environmental conditions.

[0050] It should be noted that the control unit has multiple preset air supply modes, corresponding to different swirl direction combinations. Each swirl direction combination corresponds to a swirl direction configuration table, which includes the adjustment data of each swirl direction adjustment unit 3 and the target swirl direction of the blades 22 of the swirl air supply unit 2 under each swirl direction combination. Users can manually select the target air supply mode through a Bluetooth control terminal (such as a mobile APP or Bluetooth remote control), or the control unit can intelligently match the optimal air supply mode based on the data collected by the sensing unit.

[0051] Next, we will provide two air supply methods, side air supply and top air supply, through Example 1 and Example 2, respectively, to adapt to different building ceiling conditions, floor heights and heating and cooling requirements, and solve the technical defects of a single air supply method that cannot take into account the uniformity and comfort of airflow in various indoor spaces.

[0052] Example 1 This embodiment uses side air supply.

[0053] Unlike the previous embodiments, in this embodiment, as... Figure 1 As shown, the mounting surface 11 of the air outlet housing 1 is set as a rectangle, and the rectangular mounting surface 11 has several air outlets, which are distributed in a linear array. The swirl air supply unit 2 is installed in the air outlets, and multiple swirl air supply units 2 are arranged in a row along the length of the mounting surface 11 to form a slit-type air supply effect.

[0054] As an illustrative embodiment, the air supply modes include: long-range air supply, rapid diffusion and mixing air supply, and balanced air supply, wherein, as... Figure 8 As shown in (a), when the blades 22 of all swirl air supply units 2 rotate in the same direction, as in Figure 9 As shown in (a), the exit velocity profile exhibits a gentle distribution, with low peak values ​​and slow decay, as... Figure 9 As shown in (b), the airflow has a long range and strong directionality, creating a long-range air delivery effect, suitable for scenarios with large indoor loads and requiring rapid temperature adjustment; such as Figure 8 As shown in (b), when the blades 22 of two adjacent swirl air supply units 2 rotate in opposite directions, as... Figure 10 As shown in (a), the airflow velocity fluctuates significantly and attenuates rapidly, as... Figure 10 As shown in (b), the airflow diffusion range is large at this time, and the supplied air mixes rapidly with the indoor air, forming a rapid diffusion and mixing air supply effect. This is suitable for scenarios where the indoor pollutant concentration is high and needs to be quickly diluted, or where people are concentrated and need to strengthen overall ventilation and mixing. Figure 8 As shown in (c), every three consecutive swirl air supply units 2 form a group, and the swirl direction of each swirl air supply unit 2 within a group is consistent. The swirl directions of the swirl air supply units 2 in adjacent groups are opposite, as shown in (c). Figure 11 (a) Figure 11 As shown in (b), the airflow diffusion and range are moderate, balancing the air supply coverage and mixing effect to achieve a balanced air supply effect, suitable for normal environments with moderate indoor loads and stable daily operation. It should be noted that... Figure 9 (a) Figure 10 (a) Figure 11In (a), the vertical axis U / U0 represents the dimensionless wind speed; where U0 is the initial air velocity at the outlet of the air supply port, and U is the local air velocity at the corresponding point in the jet field; the horizontal axis Y represents the horizontal distance from the measuring point to the central axis of the air supply port array along the Y-axis, in meters; the vertical axis X / D represents the dimensionless distance downstream of the jet; X is the distance between the air outlet direction and the outlet cross-section along the X-axis, and D is the diameter of the air supply port.

[0055] Example 2 This embodiment uses top-mounted air supply.

[0056] Unlike Embodiment 1, in this embodiment, as... Figure 2 As shown, the mounting surface 11 of the air vent housing 1 is circular, and the circular mounting surface 11 has several air outlets. The air outlets adopt a center-periphery layout, including a central unit located at the center and six peripheral units evenly arranged around the central unit, forming a seven-unit structure. The six peripheral units are distributed in a regular hexagon with the central unit as the center, and the included angle between adjacent peripheral units is 60°.

[0057] As an illustrative embodiment, the air supply modes include: mixed diffusion air supply and centralized sinking air supply, wherein, as Figure 12 As shown in (a), when the blades 22 of the central unit rotate in opposite directions to the blades 22 of the outer units, as... Figure 13 As shown in (a), the exit velocity profile exhibits a bimodal distribution, with low peak values ​​and rapid decay, as... Figure 13 As shown in (b), the airflow diffusion range is significantly expanded, and the supply airflow mixes with the indoor air, forming a mixed diffusion air supply effect. This is suitable for scenarios where the indoor pollutant concentration is high and needs to be rapidly diluted, forming a mixed diffusion air supply mode; Figure 12 As shown in (b), when the blades 22 of all swirl air supply units 2 rotate in the same direction, as... Figure 14 As shown in (a), the exit velocity profile exhibits a single-peak distribution with a high peak value and slow attenuation, indicating enhanced jet rigidity. Figure 14 As shown in (b), the concentrated, columnar airflow can reach the lower part of the room, creating a concentrated, downward-flowing air supply effect. This is suitable for scenarios with high indoor loads requiring rapid temperature adjustment or air supply to large spaces. It should be noted that... Figure 13 (a) Figure 14 In (a), the vertical axis U / U0 represents the dimensionless wind speed; where U0 is the initial air velocity at the outlet of the air supply port, and U is the local air velocity at the corresponding point in the jet field; the horizontal axis Y represents the horizontal distance from the measuring point to the central axis of the air supply port array along the Y-axis, in meters; the vertical axis X / D represents the dimensionless distance downstream of the jet; X is the distance between the air outlet direction and the outlet cross-section along the X-axis, and D is the diameter of the air supply port.

[0058] Example 3 The air outlets on the mounting surface 11 and the swirl air supply units 2 installed inside the air outlets can also be designed as multi-row linear arrays (such as...). Figure 15 As shown), hexagonal array (such as) Figure 16 As shown), multi-ring array (such as) Figure 17 (as shown) or a cross-shaped array (such as) Figure 18 (as shown), etc., among which multi-row linear arrays can be applied to side-supply air environments, while hexagonal arrays, multi-ring arrays, and cross-shaped arrays can be applied to top-supply air environments.

[0059] Example 4 To ensure good swirling effect of the swirl air supply unit 2, the shaft 23 of each blade 22 is hinged to the hub 21 via a ball joint, allowing the blade 22 to rotate freely around the hinge point; furthermore, such as Figure 4 As shown, the straight groove 33 has an adjustment groove along its length. The rotating shaft 23 slides along the adjustment groove and can also rotate with the straight groove 33 to achieve multi-degree-of-freedom rotation of the rotating shaft 23.

[0060] Example 5 This embodiment will describe in detail the control method of automatically matching the optimal air supply mode based on the data collected by the sensing unit, and the corresponding air supply device settings.

[0061] The sensing unit includes a temperature sensor, a CO2 sensor, and an infrared array human body sensor. The temperature sensor is installed on a representative wall location indoors, approximately 1.2-1.5m above the ground, in an area with good air circulation and not directly impacted by the supply airflow, to reflect the true temperature of the activity area. The CO2 sensor is installed near the activity area or at the return air vent to collect indoor CO2 concentration. For larger rooms, one or more of these temperature and CO2 sensors can be deployed as needed. The infrared array human body sensor is installed on the vent housing 1 or on the ceiling, or in a location overlooking the activity area. It divides the detection area into several grid cells, detecting the presence and activity status of people in each cell, thus collecting information on the distribution of people indoors. All the sensors are electrically connected to the controller via wired or wireless means.

[0062] The method for obtaining environmental parameters based on the above sensing unit includes: the sensing unit detects indoor environmental parameters, including temperature, CO2 concentration and personnel distribution information, and transmits the environmental parameter data to the control unit; After receiving environmental parameter data, the control unit first processes the data: based on the measured indoor temperature... With set temperature Calculate temperature deviation ,Right now Based on data from the infrared array human body sensing sensor, the timing begins when all indoor grid cells are detected as unoccupied, thus obtaining the continuous unoccupied time. When two or more adjacent grid cells detect people, it is determined that there is a concentration of people indoors, indicating that the area is relatively densely populated.

[0063] The method by which the control unit outputs control commands based on the processed data includes: the control unit matches the target air supply mode according to environmental parameter data, determines the swirl direction combination of the swirl air supply unit 2, and outputs adjustment commands for each swirl direction adjustment unit 3; specifically: when the CO2 concentration exceeds the set concentration threshold and continues to exceed the first time threshold, the pollutant exceeding condition is triggered; when people gather indoors, the people gathering condition is triggered; when the temperature deviation exceeds the set temperature deviation threshold and continues to exceed the second time threshold, the temperature deviation condition is triggered; when there is no one for a continuous period of time... When the third time threshold is exceeded, the indoor unoccupied condition is triggered. When multiple conditions are met simultaneously, the control unit sequentially judges them from high to low priority according to pollutant exceedance, personnel concentration, temperature deviation, and indoor unoccupied condition to determine the target mode. In this embodiment, the concentration threshold is set to 1000 ppm, the first time threshold is set to 10 s, the temperature deviation threshold is set to 2 °C, the second time threshold is set to 30 s, and the third time threshold is set to 600 s.

[0064] As an illustrative example, when the side-supply layout in Example 1 is adopted, if a temperature deviation condition is triggered, it is matched to the long-range air supply mode; if a pollutant exceeding the standard or a person concentrating condition is triggered, it is matched to the rapid diffusion and mixing air supply mode; if an unoccupied indoor condition is triggered, it is matched to the balanced air supply mode or operates with reduced air volume to save energy. For the top-supply layout in Example 2, the temperature deviation condition can be matched to the concentrated downward air supply mode, and the pollutant exceeding the standard or a person concentrating condition can be matched to the mixing and diffusion air supply mode.

[0065] Rotation direction adjustment combination: Rotation direction adjustment unit 3 adjusts the rotation direction of blades 22 of each swirl air supply unit 2 according to the adjustment command of the control unit.

[0066] Through the description of several embodiments of the multi-swirling array air supply device and its control method with adjustable swirl direction of the present invention, it can be seen that the embodiments of the multi-swirling array air supply device and its control method with adjustable swirl direction of the present invention have at least one or more of the following advantages.

[0067] 1. The multi-swirl array air supply device with adjustable swirl combination provided by the present invention has an independent swirl adjustment unit 3 set on the outside of each swirl air supply unit 2, and the adjustment unit is connected to the rotating shaft 23 of each blade 22, which can drive the rotating shaft 23 to rotate. Therefore, the angle of a single blade 22 can be adjusted independently, rather than all blades 22 being linked synchronously. Since the mounting surface 11 of the air outlet shell 1 has several air outlets, and each air outlet is equipped with an independent swirl air supply unit 2, the blades 22 in different air outlets can be adjusted to different swirl angles, thereby forming differentiated swirl combinations in different areas of the air outlet at the same time. According to the actual working conditions, multiple airflow organization modes can be flexibly switched, thereby realizing the fine control of airflow organization in space.

[0068] 2. The multi-swirl array air supply device with adjustable rotation direction provided by the present invention can drive the straight slot 33 fixedly connected to the rotating shaft 23 to deflect by adjusting the ring 31 in the annular plane defined by the support 32 relative to the wind ring 24, thereby converting the single rotation driving force into the synchronous angle adjustment of each rotating shaft 23, realizing the consistent and stable adjustment of the rotation direction of all blades 22 in the air supply unit, and ensuring the uniformity of the rotation direction of the output airflow of the unit.

[0069] 3. The multi-vortex array air supply control method with adjustable vortex direction provided by the present invention enables the control unit to accurately match the air supply mode according to the preset configuration table by comprehensively considering multi-dimensional environmental parameters such as temperature, CO2 concentration and personnel position, thereby realizing intelligent and targeted air supply regulation based on personnel distribution and indoor environmental conditions.

[0070] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A multi-swirling array air supply device with adjustable swirl direction, characterized in that, include: The air vent housing has a mounting surface at one end, and the mounting surface has several air outlets. The swirl air supply unit, which is installed in the air outlet, includes a hub, multiple blades installed around the hub, and a wind ring set around the outer periphery of the blades. Each swirl blade has a rotating shaft at its central axis. The root of the blade is hinged to the hub through the rotating shaft. The wind ring has multiple openings, the positions of which match the rotating shaft. The side of the rotating shaft away from the hub extends outward through the openings. A swirl adjustment unit, corresponding to the swirl air supply unit, includes: An adjusting ring is coaxially sleeved on the outside of the wind ring. At least two support seats are provided on the outer peripheral wall of the wind ring, and all support seats are installed on the same annular plane. The adjusting ring is assembled on each support seat so as to rotate circumferentially relative to the wind ring within the annular plane. The blade has multiple straight slots, which are located between the wind ring and the adjusting ring. The position of the straight slots matches the blade shaft. One end of the straight slot is fixedly connected to the corresponding shaft, and the other end is connected to the adjusting ring. The driver's output shaft is connected to the adjusting ring, which drives the adjusting ring to rotate circumferentially relative to the wind ring, thereby rotating the straight groove and the rotating shaft, and thus adjusting the direction of the blades.

2. The multi-swirling array air supply device with adjustable swirl direction according to claim 1, characterized in that, The wind ring has a limit groove along its circumferential direction. The adjusting ring is connected to a lever. One end of the lever is connected to the output shaft of the driver, and the other end is slidably connected in the limit groove.

3. The multi-swirling array air supply device with adjustable swirl direction according to claim 1, characterized in that, Each straight slot has a linkage rod connected to the end furthest from the rotating shaft. Multiple linkage rods are distributed circumferentially inside the adjusting ring to transmit the rotational force of the adjusting ring to the rotating shaft.

4. The multi-swirling array air supply device with adjustable swirl direction according to claim 1, characterized in that, A groove is provided at the connection between the straight groove and the rotating shaft. A convex key matching the groove is provided at the end of the rotating shaft near the straight groove. The convex key is fitted into the groove to restrict the relative circumferential rotation between the rotating shaft and the straight groove, so as to achieve synchronous deflection of the two.

5. The multi-swirling array air supply device with adjustable swirl direction according to claim 1, characterized in that, When applied to a side-supply air environment, the mounting surface is set to a rectangle, and the air outlets are distributed in a linear array; when applied to a top-supply air environment, the mounting surface is set to a circle, and the air outlets are arranged in a center-periphery layout, including a central unit located at the center and several peripheral units evenly arranged around the central unit.

6. The multi-swirling array air supply device with adjustable swirl direction according to claim 5, characterized in that, Also includes: The control unit is electrically connected to each rotation adjustment unit and is used to control the operation of the rotation adjustment unit to adjust the rotation combination of each swirl air supply unit. The sensing unit is connected to the control unit. The sensing unit is used to monitor environmental parameters and transmit the environmental parameters to the control unit, providing a judgment benchmark for the control unit to independently adjust the blade rotation direction of each swirl air supply unit and match the rotation direction combination.

7. A method for controlling airflow from a multi-swirling array with adjustable rotation direction, characterized in that, The multi-swirling array air supply device with adjustable swirl direction as described in claim 6 includes the following steps: acquiring environmental parameters: the sensing unit detects indoor environmental parameters and transmits the environmental parameter data to the control unit; Output control commands: The control unit determines the rotation combination of the swirl air supply unit according to the preset rotation configuration table, combined with the indoor environment and its parameter data, matching the target air supply mode, and outputs the adjustment commands of each rotation adjustment unit. Rotation direction adjustment combination: The rotation direction adjustment unit adjusts the blade rotation direction of each swirl air supply unit according to the adjustment command of the control unit.

8. The multi-swirl array air supply control method with adjustable rotation direction according to claim 7, characterized in that, The swirl configuration table includes the swirl combinations of each air supply mode and its corresponding swirl air supply unit. When applied to a side-supply air environment, the air supply modes include long-range air supply mode, rapid diffusion and mixing air supply mode, and balanced air supply mode. In the long-range air supply mode, the blades of the swirl air supply units rotate in the same direction. In the rapid diffusion and mixing air supply mode, the blades of two adjacent swirl air supply units rotate in opposite directions. In the balanced air supply mode, every n consecutive swirl air supply units form a group, and the swirl air supply units within the group maintain the same rotation direction. The swirl air supply units of two adjacent groups rotate in opposite directions, where n≥3. When applied to top-supply air environments, the air supply modes include mixed diffusion air supply mode and concentrated downward air supply mode; in the mixed diffusion air supply mode, the blades of the central unit rotate in the opposite direction to the blades of the peripheral units; in the concentrated downward air supply mode, the blades of all swirl air supply units rotate in the same direction.

9. The multi-swirl array air supply control method with adjustable rotation direction according to claim 8, characterized in that, In the step of acquiring environmental parameters, the method for the sensing unit to detect indoor environmental parameters includes: using a temperature sensor to detect indoor temperature, using a CO2 sensor to collect indoor CO2 concentration, and using an infrared array human body induction sensor to divide the detection area into several grid units, and detecting whether there are people and their activity status in each grid unit, so as to collect indoor personnel distribution information.

10. The multi-swirl array air supply control method with adjustable swirl direction according to claim 9, characterized in that, After receiving environmental parameters, the control unit first processes the data, and then matches the target air supply mode based on the data processing results; the data processing methods include: Based on the measured indoor temperature With set temperature Calculate temperature deviation ,Right now ; Based on data from the infrared array human body detection sensor, the timing begins when all indoor grid cells are detected as unoccupied, thus obtaining the continuous unoccupied time. ; When two or more adjacent grid cells detect people, it is determined that there is a concentration of people indoors, indicating that the area is relatively densely populated.

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