Fan wall and method of controlling the same

Abstract

The application provides a fan wall and a control method thereof, and relates to the technical field of air conditioning equipment. The fan wall comprises a mounting frame, a plurality of axial flow fans and a plurality of centrifugal fans. The outlet of each centrifugal fan is communicated with a wind pipe, and the outer side of each axial flow fan is provided with four wind pipes. The outlet of the wind pipe is located in front of the outlet of the axial flow fan or between the front of the outlet of the axial flow fan and the inlet of the axial flow fan. The centrifugal fan is arranged on the mounting frame and located on the outer side of all the axial flow fans. The centrifugal fan draws air from the outer side of all the axial flow fans and blows out in the air outlet direction of the axial flow fan, so that the uniform air blowing effect of the fan wall and the air circulation speed are improved. The control method of the fan wall comprises detecting the rotating speed of each axial flow fan. When the rotating speed of the axial flow fan is less than or equal to a preset value, the corresponding centrifugal fan is started to make the four wind pipes on the outer side of the axial flow fan blow air, so that the uniform air blowing effect of the fan wall and the air circulation speed are further maintained.

Description

Technical Field

[0001] This invention relates to the field of air conditioning equipment technology, and in particular to a fan wall and its control method. Background Technology

[0002] Fan walls typically consist of multiple fans arranged in a configuration. These fans are mounted on a frame, drawing air from one side of the frame and blowing it to the other, achieving rapid airflow. Compared to a single large fan, multiple fans create a more uniform airflow and increase air circulation speed. However, using multiple fans also increases the failure rate. If one or more fans fail, the fan wall can continue to operate, but the uniformity of the airflow will deteriorate, and the air circulation speed will decrease. Furthermore, backflow may occur at the location of the failed fan, further reducing the effectiveness of the fan wall's airflow. Summary of the Invention

[0003] In view of the above problems, the present invention provides a fan wall that overcomes or at least partially solves the above problems, so as to achieve uniform airflow and reduce the reduction of airflow speed when one or more fans in the fan wall fail.

[0004] Specifically, this invention discloses a fan wall, including a mounting frame and a plurality of axial flow fans arrayed on the mounting frame, and a plurality of centrifugal fans. Each centrifugal fan outlet is connected to a horizontally arranged duct extending in a front-rear direction. Each duct is disposed in the space between the axial flow fans or in the space between the axial flow fans and the mounting frame, such that each axial flow fan has four ducts on its outer side. The outlet of each duct is located in front of the outlet of an axial flow fan or between the outlet and inlet of an axial flow fan. The centrifugal fans are disposed on the mounting frame and are located on the outer side of all the axial flow fans.

[0005] Optionally, the centrifugal fan is a double-suction centrifugal fan, and at least one baffle is provided at the outlet of the centrifugal fan so that the outlet of the centrifugal fan has at least two sub-air outlets, each of the sub-air outlets being connected to one of the air ducts.

[0006] Optionally, the fan wall provided by the present invention further includes multiple fault detection devices and multiple drive components for driving the outlets of multiple ducts respectively. Each fault detection device is used to detect whether one of the axial flow fans has stopped. Each drive component includes a lifting device and a retracting deflection device. The lifting device is mounted on the mounting frame, and the retracting deflection device is mounted on the lifting device to move up and down with the lifting device. The retracting deflection device is used to cause the outlet of the corresponding duct to move towards the inlet of the axial flow fan and deflect to one side laterally, and then deflect towards the inlet of the corresponding axial flow fan under the drive of the lifting device.

[0007] Optionally, the backward deflection device includes a support, a translation device, and a rotating rod.

[0008] The bracket is provided with a slide rail, which includes a first section, a first positioning section, a first connecting section, a second connecting section, and a second positioning section. The first section extends in a front-rear direction. The front end of the first positioning section is connected to the rear end of the first section. The front end of the first connecting section is connected to the rear end of the first positioning section. The rear end of the second connecting section is connected to the rear end of the first connecting section. The rear end of the second positioning section is connected to the front end of the second connecting section. The front end of the second positioning section communicates with the rear part of the first section. The boundary line between the front walls of the first connecting section and the second connecting section is located on the front side of the rear wall of the first connecting section. The boundary line between the rear walls of the first connecting section and the second connecting section is located on the rear side of the front wall of the second connecting section.

[0009] The rotating rod includes a vertically extending rotating rod, a horizontally arranged connecting rod, and a vertically extending sliding rod. The sliding rod is inserted into the slide rail and slides and rotates within the slide rail. The connecting rod connects the upper end of the sliding rod and the lower end of the rotating rod. The rotating rod is rotatably mounted on the translation device. The translation device is configured to drive the rotating rod to move in the back-and-forth direction.

[0010] The outlet of the air duct is installed at the upper end of the corresponding rotating rod.

[0011] Optionally, the duct includes a rigid pipe and a flexible hose connected to one end of the rigid pipe, the other end of the rigid pipe being connected to the outlet of the centrifugal fan, and the opening of the flexible hose being the outlet of the duct.

[0012] Optionally, each of the fault detection devices includes:

[0013] A baffle plate, rotatably disposed at the outlet of the axial flow fan; and

[0014] A pressure sensor is configured to detect the pressure applied by the wind deflector as it rotates under the influence of airflow.

[0015] Optionally, each of the fault detection devices includes an airflow sensor located near the inlet of the axial flow fan.

[0016] Optionally, each of the fault detection devices includes a speed sensor, which is mounted on the axial flow fan.

[0017] This invention also proposes a control method for a wind turbine wall, comprising:

[0018] The rotational speed of each of the axial flow fans is detected;

[0019] When the rotational speed of the axial flow fan is less than or equal to a preset value, the corresponding centrifugal fan is started so that at least the four ducts on the outside of the axial flow fan can output air.

[0020] Optionally, the control method for the wind turbine wall proposed in this invention further includes:

[0021] Check whether each of the axial flow fans has stopped;

[0022] If one of the axial flow fans stops, the four air ducts on the outside of the axial flow fan are deflected toward the inlet of the corresponding axial flow fan to deliver air to the inlet of the axial flow fan.

[0023] If multiple axial flow fans stop operating, and the ducts cooperating with the stopped axial flow fans are independent of each other, then the four ducts on the outer side of each stopped axial flow fan deflect towards the inlet of the corresponding axial flow fan. If there are shared ducts among the ducts cooperating with the stopped axial flow fans, and the number of axial flow fans in each row is odd, then the ducts on the outer side of the stopped axial flow fans near the middle and upper parts preferentially deflect towards the inlet of that axial flow fan. If there are shared ducts among the ducts cooperating with the stopped axial flow fans, and the number of axial flow fans in each row is even, then the ducts on the outer side of the stopped axial flow fans near the middle and upper parts preferentially deflect towards the inlet of that axial flow fan. When the two middle axial flow fans in the same row are both stopped, the corresponding ducts deflect towards the inlet of one axial flow fan first, and then towards the inlet of the other axial flow fan, according to a preset time interval.

[0024] Optionally, the control method for the wind turbine wall proposed in this invention further includes:

[0025] Check whether each of the axial flow fans has stopped;

[0026] If one of the axial flow fans stops, the four air ducts on the outside of the axial flow fan are deflected toward the inlet of the corresponding axial flow fan to deliver air to the inlet of the axial flow fan.

[0027] If multiple axial flow fans stop operating, and the ducts that cooperate with the stopped axial flow fans are independent of each other, then the four ducts on the outside of each stopped axial flow fan deflect towards the inlet of the corresponding axial flow fan; if there are shared ducts among the ducts that cooperate with the stopped axial flow fans, the corresponding ducts deflect sequentially towards the inlet of the corresponding multiple stopped axial flow fans at preset time intervals.

[0028] The fan wall provided by this invention features centrifugal fans installed outside all axial fans. The outlets of the centrifugal fans are connected to ducts, with the duct outlets positioned either in front of the axial fan outlets or between the axial fan outlets and inlets. The centrifugal fans draw air from the outside of all axial fans and blow it out in the direction of the axial fan outlets, improving the uniformity of airflow and increasing air circulation speed. The airflow blown out by the centrifugal fans through the ducts also drives the axial fan outlets forward, increasing the air delivery distance. Furthermore, since the centrifugal fans draw air from the outside of all axial fans, they do not affect the air inlet areas of the axial fans, thus not impacting the axial fan intake and potentially accelerating it. The centrifugal fans, drawing air from their inlet areas, significantly increase the overall airflow of the fan wall.

[0029] Furthermore, when one or more axial fans in the fan wall malfunction, four air ducts at the four corners of the axial fan are still blowing air, which can maintain the uniform airflow effect of the fan wall and improve the air circulation speed as much as possible. At the same time, it can also prevent the formation of return airflow at the malfunctioning axial fan to a certain extent.

[0030] Furthermore, the fan wall provided by this invention also includes a fault detection device and a drive assembly. When the fault detection device detects a fault in the axial flow fan, the drive assembly moves the ducts at the four corners of the axial flow fan to the vicinity of the fan inlet, and deflects the outlets of the four ducts toward the fan inlet. The four ducts blow air toward the fan inlet, and the airflow passes through the fan's ducts and exits to the other side of the fan wall, further maintaining a uniform airflow effect and increasing air circulation speed. Simultaneously, it avoids the formation of backflow at the faulty axial flow fan.

[0031] The control method for the fan wall provided by this invention detects the rotational speed of each axial fan to determine whether the axial fan is operating normally. If the operation is abnormal, the four air ducts on the outer side of the axial fan are deflected towards the inlet of the corresponding axial fan to deliver air to the inlet of the axial fan. In other words, when the axial fan is operating abnormally, the four air ducts blow air towards the inlet of the axial fan, and the airflow is blown out to the other side of the fan wall through the air duct of the axial fan, further maintaining the uniform airflow effect of the fan wall and improving the air circulation speed.

[0032] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0033] The following sections will describe some specific embodiments of the invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0034] Figure 1 This is a schematic front view of a fan wall according to an embodiment of the present invention;

[0035] Figure 2 This is a schematic rear view of a wind turbine wall according to an embodiment of the present invention;

[0036] Figure 3 This is a schematic rear view of a fan wall according to another embodiment of the present invention;

[0037] Figure 4 This is a schematic structural diagram of a combination of a centrifugal fan, a connecting pipe, and a duct in a fan wall according to an embodiment of the present invention;

[0038] Figure 5 This is a schematic structural diagram of the drive assembly of a wind turbine wall according to an embodiment of the present invention;

[0039] Figure 6 This is a schematic structural diagram of the slide rail of a fan wall according to an embodiment of the present invention;

[0040] Figure 7 This is a schematic structural diagram of the combination of the slide rail, rotating rod and air duct of the fan wall according to an embodiment of the present invention;

[0041] Figure 8 This is a flowchart of a control method for a wind turbine wall according to an embodiment of the present invention;

[0042] Figure 9 This is a flowchart of a control method for a wind turbine wall according to another embodiment of the present invention. Detailed Implementation

[0043] The following reference Figures 1 to 9This invention describes a wind turbine wall and its control method according to embodiments of the present invention. In this description, it should be understood that 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 indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0044] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] Fan walls are commonly used in large air conditioners, large air purifiers, and other similar equipment to drive rapid airflow and exchange in the vicinity. A fan wall typically consists of multiple axial fans arranged in a configuration on a mounting frame. When the axial fans are running, they draw air from the inlet side of the axial fans and discharge it to the outlet side, achieving rapid airflow and exchange. Compared to using a single large fan, using multiple fans in combination can produce a more uniform extraction or blowing effect and increase airflow speed. However, using multiple fans also increases the failure rate. If one or more fans fail, the fan wall can continue to operate, but the uniformity of the extraction or blowing effect will deteriorate, and the airflow speed will decrease. It may even create backflow at the location of the failed fan, further reducing the effectiveness of the fan wall's extraction or blowing.

[0048] To address the above problems, this invention proposes a fan wall. Figure 1 This is a schematic front view of a wind turbine wall according to an embodiment of the present invention. Figure 1 As shown, combined with Figures 2 to 7 This invention discloses a fan wall, including a mounting frame 1 and a plurality of axial flow fans 2 arrayed on the mounting frame 1, and a plurality of centrifugal fans 3. Each centrifugal fan 3 has an outlet connected to a horizontally arranged duct 4 extending in the front-back direction. Each duct 4 is disposed in the space between the axial flow fans 2 or in the space between the axial flow fans 2 and the mounting frame 1, such that each axial flow fan 2 has four ducts 4 on its outer side. The outlet of the duct 4 is located in front of the outlet of the axial flow fan 2 or between the outlet and the inlet of the axial flow fan 2. The centrifugal fans 3 are disposed on the mounting frame 1 and are located on the outer side of all the axial flow fans 2.

[0049] Centrifugal fans 3 are positioned outside all axial fans 2 to draw air away from the outside of all axial fans 2. The air is then blown out through horizontally arranged ducts 4, with the outlet of duct 4 located either in front of the outlet of axial fan 2 or between the outlet and inlet of axial fan 2. In other words, when all axial fans 2 are operating normally, centrifugal fans 3 provide auxiliary airflow, accelerating air circulation and improving uniform air distribution. Centrifugal fans 3 draw away air from the outside of all axial fans 2 without affecting their normal air extraction. Furthermore, they accelerate the air intake of the axial fans, drawing air in from their inlet areas, significantly increasing the overall airflow of the fan wall.

[0050] Furthermore, when one or more axial flow fans 2 malfunction and stop operating, not only will an air outlet gap be formed at that axial flow fan 2, but also, due to the normal airflow from the surrounding axial flow fans 2, a return airflow will form at that axial flow fan 2, further reducing the airflow effect of the surrounding axial flow fans 2. In this embodiment, four air ducts 4 are provided at the four corners of the stopped axial flow fan 2. At this time, the centrifugal fan 3 continues to blow air normally through the outlets of the air ducts 4 located at the four corners of the axial flow fan 2, which to some extent compensates for the air outlet gap, allowing the entire fan wall to continue operating normally. The high-speed airflow blown out of the air ducts 4 will, to some extent, prevent the formation of a return airflow at the axial flow fan 2, or reduce the return air at that point, thereby maintaining the normal airflow effect of the fan wall. In this embodiment, each axial flow fan 2 operates first, and when an axial flow fan 2 malfunctions, the corresponding centrifugal fan 3 and air duct 4 can be started. In some embodiments, each of the axial flow fans 2, centrifugal fans 3, and ducts 4 is in operation. When an axial flow fan 2 fails, the corresponding centrifugal fan 3 can be accelerated to ensure the operation of the fan wall.

[0051] In some embodiments of the fan wall of the present invention, the centrifugal fan 3 is a double-suction centrifugal fan 3, and at least one baffle is provided at the outlet of the centrifugal fan 3 so that the outlet of the centrifugal fan 3 has at least two sub-air outlets, each sub-air outlet connecting to an air duct 4. The double-suction centrifugal fan 3 can generate stronger suction outside all axial flow fans 2, and generate a larger airflow at the outlet of the centrifugal fan 3. Setting multiple sub-air outlets allows multiple air ducts 4 to share one centrifugal fan 3, reducing the number of centrifugal fans 3 in the fan wall and reducing production costs. To facilitate air outlet, a connecting pipe 31 is provided between the outlet of the centrifugal fan 3 and the air duct 4, such as Figure 4 As shown, the connecting pipe 31 is located outside the gap between the two axial flow fans 2, so as not to affect the air intake of the axial flow fans 2 as much as possible. Furthermore, the connecting pipe 31 is at a certain distance from the plane where the inlet of the axial flow fan 2 is located, that is, the connecting pipe 31 is spaced apart from the plane where the inlet of the axial flow fan 2 is located.

[0052] In some embodiments of the fan wall of the present invention, the fan wall further includes multiple fault detection devices and multiple drive components 6 for driving the outlets of multiple air ducts 4 respectively. Each fault detection device is used to detect whether an axial flow fan 2 has stopped. Each drive component 6 includes a lifting device 61 and a retraction deflection device 62. The lifting device 61 is mounted on the mounting frame 1, and the retraction deflection device 62 is mounted on the lifting device 61 to move up and down with the lifting device 61. The retraction deflection device 62 is used to cause the outlet of the corresponding air duct 4 to move towards the inlet of the axial flow fan 2 and deflect to one side laterally, and then deflect towards the inlet of the corresponding axial flow fan 2 under the drive of the lifting device 61.

[0053] In this embodiment, when the fault detection device detects that one or more axial flow fans 2 have stopped operating, the drive assembly 6 drives the outlets of the four corner ducts 4 located in front of the outlet of the axial flow fan 2 or between the outlet of the axial flow fan 2 and the inlet of the axial flow fan 2 to move backward, to the rear side of the inlet of the axial flow fan 2. Simultaneously, the outlets of the ducts 4 deflect towards the inlet of the axial flow fan 2. Under the action of the centrifugal fan 3, high-speed airflow is blown from the outlets of the four ducts 4 into the air duct of the inlet of the stopped axial flow fan 2, and the high-speed airflow is blown out from the outlet of the axial flow fan 2 along the air duct. In other words, the four ducts 4 replace the stopped axial flow fans 2, maintaining airflow. Thus, no airflow gap or return airflow is formed at the stopped axial flow fans 2. This further improves the overall airflow speed and uniform airflow effect of the fan wall when one or more axial flow fans 2 have stopped operating.

[0054] In some embodiments of the wind turbine wall of the present invention, such as Figure 5-7 As shown, the backward deflection device 62 includes a bracket 621, a translation device 622, and a rotating rod 623. A slide rail 6211 is provided on the bracket 621, which includes a first section 71, a first positioning section 72, a first connecting section 73, a second connecting section 74, and a second positioning section 75. The first section 71 extends in the front-rear direction. The front end of the first positioning section 72 connects to the rear end of the first section 71, the front end of the first connecting section 73 connects to the rear end of the first positioning section 72, the rear end of the second connecting section 74 connects to the rear end of the first connecting section 73, and the rear end of the second positioning section 75 connects to the front end of the second connecting section 74. The front end of the second positioning section 75 communicates with the rear part of the first section 71. The boundary line between the front walls of the first connecting section 73 and the second connecting section 74 is located on the front side of the rear wall of the first connecting section 73, and the boundary line between the rear walls of the first connecting section 73 and the second connecting section 74 is located on the rear side of the front wall of the second connecting section 74. The rotating rod 623 includes a vertically extending rotating rod 81, a horizontally arranged connecting rod, and a vertically extending sliding rod 83. The sliding rod 83 is inserted into a slide rail 6211 and slides and rotates within the slide rail 6211. The connecting rod connects the upper end of the sliding rod 83 and the lower end of the rotating rod 81. The rotating rod 81 is rotatably mounted on a translation device 622. The translation device 622 is configured to drive the rotating rod 81 to move in the back-and-forth direction. The outlet of the duct 4 is mounted on the corresponding upper end of the rotating rod 81.

[0055] The outlet of the duct 4 is fixedly connected to the end of the rotating rod 81, and the sliding rod 83 can slide along the slide rail 6211 under the drive of the translation device 622. When the sliding rod 83 is in the first section 71, the rotating rod 81 and the outlet of the duct 4 are in a retracted state. That is to say, the outlet of the duct 4 is located in front of the outlet of the axial flow fan 2 or between the outlet of the axial flow fan 2 and the inlet of the axial flow fan 2. At this time, the axial flow fan 2 operates normally, and the duct 4 does not interfere with the air extraction and exhaust of the axial flow fan 2.

[0056] When the fault detection device detects an abnormal operation of the axial flow fan 2 located on the upper left side of a certain duct 4, the translation device 622 drives the slide rod 83 to slide backward from the first section 71. That is, the rotating rod 623 drives the outlet of the duct 4 to move from the front of the outlet of the axial flow fan 2 towards the inlet of the axial flow fan 2. The single slide rail 6211 splits into two slide rails 6211 at the rear end of the first section 71, namely the first positioning section 72 on the right and the second positioning section 75 on the left. Because the corner angle formed by the first positioning section 72 and the first section 71 is greater than the corner angle formed by the second positioning section 75 and the first section 71, the slide rod 83 slides into the first positioning section 72 under the drive of the translation device 622. At this time, the slide rod 83 turns to the right, the rotating rod 81 turns to the left accordingly, and the outlet of the duct 4 fixed on the rotating rod 81 also turns to the left, towards the vicinity of the inlet of the axial flow fan 2 located on the left. At the same time, the lifting device 61 moves upward, driving the rotating rod 81 to move the deflecting device 62 backward toward the axis of the malfunctioning axial flow fan 2 located on the upper left side of the air duct 4, so that the outlet of the air duct 4 fixed on the rotating rod 81 also moves toward the center of the inlet of the malfunctioning axial flow fan 2.

[0057] When the fault detection device detects that the axial flow fan 2 located on the lower left side of the air duct 4 is operating abnormally, the lifting device 61 moves downward, driving the rotating rod 81 to move the deflection device 62 back towards the axis of the axial flow fan 2 located on the upper left side of the air duct 4, so that the outlet of the air duct 4 fixed on the rotating rod 81 is near the center of the inlet of the axial flow fan 2 on the upper left side.

[0058] When the fault detection device detects an abnormal operation of the axial flow fan 2 located on the lower right side of the duct 4, the translation device 622 slides backward a certain distance, causing the slide rod 83 to enter the first connecting section 73. The translation device 622 then slides forward. Because the angle formed by the sliding direction of the second connecting section 74 and the translation device 622 is greater than the angle formed by the sliding direction of the first connecting section 73 and the translation device 622, the slide rod 83 moves from the first connecting section 73 into the second connecting section 74, and then from the second connecting section to the second positioning section 75. Because the second positioning section 75 is located to the left of the first section 71, when the slide rod 83 moves to the left, it causes the rotating rod 81 to rotate to the right by a corresponding angle. That is, the outlet of the duct 4, fixed to the rotating rod 81, faces towards the vicinity of the center of the inlet of the abnormally operating axial flow fan 2 located on the lower right side.

[0059] When the fault detection device detects that the axial flow fan 2 located on the upper right side of the air duct 4 is operating abnormally, the lifting device 61 moves upward, driving the rotating rod 81 to move the deflection device 62 towards the axis of the axial flow fan 2 located on the upper right side of the air duct 4, so that the outlet of the air duct 4 fixed on the rotating rod 81 is near the center of the inlet of the axial flow fan 2 on the upper right side.

[0060] In some embodiments of the fan wall of the present invention, adjacent axial flow fans 2 share the outlet of the duct 4. For example, the fan wall includes four axial flow fans 2, and the fan wall with four axial flow fans 2 is provided with a total of nine ducts 4. Figure 1 As shown, the fan wall includes 16 axial flow fans 2, and the fan wall with 16 axial flow fans 2 is equipped with a total of 25 air ducts 4.

[0061] In some embodiments of the fan wall of the present invention, the duct 4 includes a rigid pipe and a flexible hose connected to one end of the rigid pipe. The other end of the rigid pipe is connected to the outlet of the centrifugal fan 3, and the opening of the flexible hose is the outlet of the duct 4. The flexible hose is used to cooperate with the drive device to move and turn the outlet of the duct 4 so that the air outlet of the duct is also directed towards the center of the inlet of the malfunctioning axial fan 2. The rear end of the flexible hose can be telescopically fitted onto the front end of the rigid pipe in the front-rear direction.

[0062] In some embodiments of the fan wall of the present invention, each fault detection device includes a baffle plate and a pressure sensor. The baffle plate is rotatably disposed at the outlet of the axial flow fan 2, and the pressure sensor is configured to detect the pressure applied by the rotation of the baffle plate under the action of airflow. When the axial flow fan 2 malfunctions, the air pressure of the pressure sensor on the baffle plate decreases, which can determine whether the rotational speed of the axial flow fan 2 has decreased or whether it has stopped.

[0063] In some embodiments of the fan wall of the present invention, each fault detection device includes an airflow sensor, which is located near the inlet of the axial fan 2. The airflow sensor can directly detect the wind speed near the inlet of the axial fan 2. By comparing it with the wind speed near the inlet of the axial fan 2 during normal operation with the same input power, it can be determined whether the rotational speed of the axial fan 2 has decreased or whether it has stopped.

[0064] In some embodiments of the fan wall of the present invention, each fault detection device includes a speed sensor, which is disposed on the axial flow fan 2. The speed sensor may be disposed at the tail end of the motor of the axial flow fan 2. By counting the number of revolutions of the motor rotor of the axial flow fan 2 per unit time, the speed of the motor of the axial flow fan 2 can be obtained. By comparing it with the speed of the axial flow fan 2 during normal operation with the same input power, it can be determined whether the speed of the axial flow fan 2 has decreased or whether it has stopped.

[0065] On the other hand, the present invention provides a control method for a wind turbine wall. In some embodiments of the wind turbine wall control method of the present invention, such as... Figure 8 As shown, combined with Figure 9 This includes the following steps:

[0066] Step S101: Detect the rotational speed of each axial fan 2;

[0067] Step S102: Determine whether the rotational speed of the axial flow fan 2 is less than a preset value;

[0068] Step S103: If the rotation speed of some axial flow fans 2 is less than the preset value, start the corresponding centrifugal fan 3, and the four air ducts 4 on the outside of the axial flow fans 2 will output air.

[0069] In this embodiment, step S101 is to operate the fault detection device. Each axial flow fan 2 is equipped with a fault detection device to detect the rotational speed of the axial flow fan 2.

[0070] When the fault detection device includes a speed sensor, the speed of the axial fan 2 can be directly detected. When the fault detection device includes a pressure sensor or an airflow sensor, the air pressure or air velocity of the axial fan 2 can be detected and then converted into speed. Of course, to make the detection results more accurate, two or three sensors can be used simultaneously.

[0071] In some embodiments of the present invention, the fault detection device is configured to operate in a continuous mode. In this mode, the fault detection device is configured to monitor the operating status of the axial flow fan 2 at any time, and can detect in a timely manner any abnormal operation of the axial flow fan 2.

[0072] In other embodiments of the present invention, the fault detection device is configured in an interval mode. In this mode, the fault detection device is configured to periodically detect the operating status of the axial flow fan 2. The interval mode can be set to a natural time, such as once per minute, hour, or day, or it can be set to the cumulative operating time of the axial flow fan 2, such as once per minute, hour, or day. During its normal lifespan, the probability of the axial flow fan 2 experiencing operational abnormalities is low. The interval mode reduces the operating frequency of the fault detection device, extends its lifespan, and also reduces energy consumption. Simultaneously, it can promptly detect malfunctioning axial flow fans 2.

[0073] In some embodiments of the present invention, step S102 is used to determine the result detected in step S101. By comparing the rotational speed with that of the axial flow fan 2 under the same input power, it is determined whether the axial flow fan 2 is operating abnormally.

[0074] In some embodiments of the present invention, in step S103, once it is determined that one or more axial flow fans 2 are operating abnormally, the corresponding centrifugal fan 3 is started, causing air to exit from the four air ducts 4 outside the faulty axial flow fan 2. This is to maintain the normal airflow effect of the fan wall as much as possible.

[0075] In some embodiments of the present invention, in step S103, if it is determined that one or more axial flow fans 2 have stopped operating, they will first be shut down to prevent the stopped axial flow fans 2 from overheating and causing overload damage to the motor. Then, a fault alarm will be issued to prompt maintenance personnel to repair the stopped axial flow fans 2 in a timely manner.

[0076] In some embodiments of the present invention, in step S103, when it is determined that the rotational speed of one or more axial flow fans 2 is less than a preset value, the difference between the detection result of the fault detection device and the preset value is further determined. If the difference is small, it indicates that the fault of the axial flow fan 2 is not serious, so the axial flow fan 2 will not be shut down, but will continue to run. At the same time, the corresponding centrifugal fan 3 will be started, and air will be discharged from the four air ducts 4 on the outside of the axial flow fan 2. Then, a fault alarm will be issued to prompt maintenance personnel to repair the stopped axial flow fan 2 in a timely manner.

[0077] In some embodiments of the present invention, the control method of the wind turbine wall, such as Figure 9 As shown, it also includes the following steps:

[0078] Step S201: Detect the rotational speed of each axial fan 2;

[0079] Step S202: The detection results are divided into three categories: the first is that only one axial flow fan 2 stops; the second is that multiple axial flow fans 2 stop, and the air ducts 4 that cooperate with the multiple stopped axial flow fans 2 are independent of each other; the third is that multiple axial flow fans 2 stop, and there is a shared air duct 4 among the multiple stopped axial flow fans 2. In any of these three cases, the stopped axial flow fan 2 is shut down.

[0080] In step S203, in the first case, the outlets of the four air ducts 4 on the outside of the axial flow fan 2 are deflected toward the inlet of the corresponding axial flow fan 2 so as to send air to the inlet of the axial flow fan 2.

[0081] In the second case, the outlets of the four ducts 4 on the outside of each stopped axial fan 2 are deflected toward the inlet of the corresponding axial fan 2 so as to supply air to the inlet of the stopped axial fan 2.

[0082] In the third case, the number of axial flow fans 4 in each row is odd, causing the outlet of the duct 4 on the outer side of the stopped axial flow fans 2 near the middle and upper parts to deflect towards the inlet of the corresponding axial flow fan 2, so as to supply air to the inlet of the stopped axial flow fan 2. Alternatively, the number of axial flow fans 4 in each row is even, causing the duct on the outer side of the stopped axial flow fans 2 near the middle and upper parts to preferentially deflect towards the inlet of that axial flow fan, and when the two middle axial flow fans in the same row are both stopped, the corresponding duct deflects towards the inlet of one axial flow fan first, and then towards the inlet of the other axial flow fan, according to a preset time interval.

[0083] In some embodiments of the present invention, in step S203, in the third case, a priority is pre-set for each axial flow fan 2. For example, when there are four axial flow fans 2, each axial flow fan 2 corresponds to a priority sequence: A1, A2, and A1>A2. If both A1 axial flow fan 2 and A2 axial flow fan 2 are stopped, and there is a shared air duct 4 between them, then according to priority, that is, the four air ducts 4 around A1 axial flow fan 2 move towards the inlet of A1 axial flow fan first. At this time, for A2 axial flow fan, only the remaining air ducts that have not moved towards the inlet of A1 axial flow fan move towards the inlet of A2 axial flow fan. Figure 3 As shown. In some embodiments of the present invention, the priority of the axial flow fan 2 located at the center of the fan wall is set to A1, with the axial flow fan 2 closer to the center having a higher priority. Generally, the demand for air extraction or exchange is greater near the center of the fan wall. Therefore, prioritizing the blowing of air into the inlet of the axial flow fan 2 near the center of the fan wall can maintain the normal blowing effect of the fan wall as much as possible. When the priority of the closer to the center is met, the priority of the axial flow fan 2 located at the higher position is set to A1.

[0084] In some embodiments of the present invention, in step S203, if there is a shared duct between the duct and the duct that cooperates with the stopped axial flow fan, the corresponding duct is deflected sequentially toward the inlet of the corresponding stopped axial flow fan at preset time intervals. This can maintain the normal blowing effect of the fan wall as much as possible.

[0085] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1. A fan wall, comprising a mounting frame and a plurality of axial flow fans arrayed on the mounting frame, characterized in that, Also includes: Multiple centrifugal fans, each of which has an outlet connected to a horizontally arranged duct extending in the front-to-back direction; Each of the ducts is disposed in the space between the axial flow fans or in the space between the axial flow fan and the mounting frame, such that each axial flow fan has four ducts on its outer side, and the outlet of the duct is located in front of the outlet of the axial flow fan or between the outlet and the inlet of the axial flow fan; the centrifugal fan is disposed on the mounting frame and is located on the outer side of all the axial flow fans.

2. The fan wall according to claim 1, characterized in that, The centrifugal fan is a double-suction centrifugal fan, and at least one baffle is provided at the outlet of the centrifugal fan so that the outlet of the centrifugal fan has at least two sub-air outlets, each of the sub-air outlets being connected to one of the air ducts.

3. The fan wall according to claim 1, characterized in that, It also includes multiple fault detection devices, and multiple drive components for driving the outlets of the multiple ducts respectively; Each of the aforementioned fault detection devices is used to detect whether one of the axial flow fans has stopped rotating; Each of the aforementioned driving components includes: A lifting device, wherein the lifting device is mounted on the mounting frame; and A retraction deflection device is installed on the lifting device to move up and down with the lifting device; the retraction deflection device is used to cause the outlet of the corresponding air duct to move towards the inlet of the axial flow fan and deflect to one side laterally, and then deflect towards the inlet of the corresponding axial flow fan under the drive of the lifting device.

4. The fan wall according to claim 3, characterized in that, The retraction deflection device includes a bracket, a translation device, and a rotating rod; The bracket is provided with a slide rail, which includes a first section, a first positioning section, a first connecting section, a second connecting section, and a second positioning section. The first section extends in a front-rear direction. The front end of the first positioning section is connected to the rear end of the first section. The front end of the first connecting section is connected to the rear end of the first positioning section. The rear end of the second connecting section is connected to the rear end of the first connecting section. The rear end of the second positioning section is connected to the front end of the second connecting section. The front end of the second positioning section communicates with the rear part of the first section. The boundary line between the front walls of the first connecting section and the second connecting section is located on the front side of the rear wall of the first connecting section. The boundary line between the rear walls of the first connecting section and the second connecting section is located on the rear side of the front wall of the second connecting section. The rotating rod includes a vertically extending rotating rod, a horizontally arranged connecting rod, and a vertically extending sliding rod. The sliding rod is inserted into the slide rail and slides and rotates within the slide rail. The connecting rod connects the upper end of the sliding rod and the lower end of the rotating rod. The rotating rod is rotatably mounted on the translation device. The translation device is configured to drive the rotating rod to move in the front-back direction. The outlet of the air duct is installed at the upper end of the corresponding rotating rod.

5. The fan wall according to claim 3, characterized in that, The duct includes a rigid pipe and a flexible hose connected to one end of the rigid pipe. The other end of the rigid pipe is connected to the outlet of the centrifugal fan, and the opening of the flexible hose is the outlet of the duct.

6. The fan wall according to claim 3, characterized in that, Each of the fault detection devices includes: A baffle plate, rotatably disposed at the outlet of the axial flow fan; and A pressure sensor is configured to detect the pressure applied by the wind deflector as it rotates under the influence of airflow.

7. The fan wall according to claim 3, characterized in that, Each of the fault detection devices includes an airflow sensor, which is located near the inlet of the axial flow fan.

8. The fan wall according to claim 3, characterized in that, Each of the fault detection devices includes a speed sensor, which is mounted on the axial flow fan.

9. A control method for a wind turbine wall according to any one of claims 1 to 8, characterized in that, include: The rotational speed of each of the axial flow fans is detected; When the rotational speed of the axial flow fan is less than or equal to a preset value, the corresponding centrifugal fan is started so that at least the four ducts on the outside of the axial flow fan can output air.

10. The control method for the fan wall according to claim 9, characterized in that, Also includes: Check whether each of the axial flow fans has stopped; If one of the axial flow fans stops, the four air ducts on the outside of the axial flow fan are deflected toward the inlet of the corresponding axial flow fan to deliver air to the inlet of the axial flow fan. If multiple axial flow fans stop operating, and the ducts cooperating with the stopped axial flow fans are independent of each other, then the four ducts on the outer side of each stopped axial flow fan deflect towards the inlet of the corresponding axial flow fan. If there are shared ducts among the ducts cooperating with the stopped axial flow fans, and the number of axial flow fans in each row is odd, then the ducts on the outer side of the stopped axial flow fans near the middle and upper parts preferentially deflect towards the inlet of that axial flow fan. If there are shared ducts among the ducts cooperating with the stopped axial flow fans, and the number of axial flow fans in each row is even, then the ducts on the outer side of the stopped axial flow fans near the middle and upper parts preferentially deflect towards the inlet of that axial flow fan. When the two middle axial flow fans in the same row are both stopped, the corresponding ducts deflect towards the inlet of one axial flow fan first, and then towards the inlet of the other axial flow fan, according to a preset time interval.

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