A centrifugal fan with adjustable splitter blades

Abstract

This invention discloses a centrifugal fan with adjustable flow divider blades, including a base and a turntable that rotates with a motor. A housing is rotatably connected to the outer surface of the turntable, and a baffle is fixedly connected to the outer surface of the housing. A protective component is connected to the housing away from the baffle, with its bottom fixedly connected to the base. A bracket is fixedly connected to the top of the base. A pressure plate is rotatably connected to the housing away from the turntable. A ventilation component is rotatably connected to the inner surface of the housing, and an inner frame is rotatably connected to the inner surface of the ventilation component. This invention relates to the field of ventilation fan technology. This centrifugal fan with adjustable flow divider blades avoids gaps at the connection points caused by housing vibration during operation, thus increasing the contact area of ​​the housing. When the ventilation component and the inner frame cooperate, the contact surface of the rotating parts can be adjusted, facilitating the maintenance of the fan's operating efficiency.

Description

Technical Field

[0001] This invention relates to the field of ventilation technology, and more specifically to a centrifugal fan with adjustable flow divider blades. Background Technology

[0002] The term "fan" generally refers to ventilators, blowers, compressors, and Roots blowers. Fans are classified according to the direction of internal airflow, primarily into three types: axial flow, centrifugal, and mixed-flow (oblique flow). Centrifugal fans have a relatively simple structure and are widely used in environments requiring ventilation, cooling, and dust removal, as well as for drying and conveying grains. They can also provide airflow for wind tunnel tests and serve as propulsion devices for hovercraft. Centrifugal fans use mechanical energy to increase gas pressure and then transport the gas. They are relatively precise operating machines. The rotation of the impeller creates negative pressure inside the fan, drawing in external gas and discharging it through the impeller channels and volute. Centrifugal fans are a general-purpose machine widely used in various sectors of the national economy. With the continuous increase in domestic energy demand, the fan market is expanding, leading to a continuous increase in fan energy consumption. In practical applications, the internal flow of centrifugal fans is very complex. Especially when the centrifugal fan is running under partial load, unsteady flow will occur. With the generation of unsteady flow, the fan performance will be significantly reduced. The main performance parameters of the fan are flow rate, pressure, power, efficiency, and speed. Changing the air volume and air pressure of the fan to meet the requirements of changing operating conditions is called performance regulation. However, it is not easy to adjust the internal components of the fan during operation, and it is not easy to adjust the blades during the fan rotation process, which reduces the working efficiency of the blades and causes damage to the fan during use. This leads to a decrease in the stability of the fan during operation, increases the difficulty of subsequent fan installation, causes the fan to shake during operation, loosens the connection position, reduces the sealing of the connection position during the fan operation, and thus shortens the service life of the fan.

[0003] In summary, it is not easy to adjust the internal components of the fan during operation, and it is also not easy to adjust the blades during the fan's rotation, which reduces the working efficiency of the blades, increases the difficulty of subsequent fan installation, and reduces the sealing of the connection points when the fan is working. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this invention is: a centrifugal fan with adjustable flow dividers, comprising a base,

[0005] A turntable, which rotates with a motor, has a housing rotatably connected to its outer surface. A baffle is fixedly connected to the outer surface of the housing. A protective component is connected to the housing away from the baffle. The bottom of the protective component is fixedly connected to a base. A bracket is fixedly connected to the top of the base. A pressure plate is rotatably connected to the housing away from the turntable. A ventilation component is rotatably connected to the inner surface of the housing. An inner frame is rotatably connected to the inner surface of the ventilation component. The bracket and base work together to create a space for fixing the housing. The turntable rotates on the housing with the motor, thus providing power to the fan. The pressure plate is circular and mounted on the housing. The angle and area of ​​contact can be adjusted when the pressure plate rotates. When the ventilation component and the inner frame work together, the contact surface of the rotating components can be adjusted.

[0006] A ventilation assembly includes a sliding sleeve that rotates with a turntable. A mounting sleeve is fixedly connected to the outer surface of the sliding sleeve, and a flow-diverting blade is fixedly connected to the inner surface of the mounting sleeve. Both ends of the flow-diverting blade penetrate the mounting sleeve and extend to the outside of the mounting sleeve. An auxiliary frame is slidably connected to the flow-diverting blade near the mounting sleeve, and a contact ring is rotatably connected to the mounting sleeve near the sliding sleeve. As the flow-diverting blade rotates on the mounting sleeve with the sliding sleeve, the sliding sleeve contacts the turntable and rotates with it. The flow-diverting blade penetrates the mounting sleeve and slides with the auxiliary frame as the mounting sleeve rotates. The cooperation between the auxiliary frame and the contact ring protects the contact position, allowing the contact ring to cooperate with the auxiliary frame to achieve an adjustment function when it contacts the sliding sleeve.

[0007] Preferably, the end of the sliding sleeve away from the contact ring passes through the mounting sleeve and extends to the outside of the mounting sleeve, and the end of the sliding sleeve away from the mounting sleeve is fixedly connected to the turntable.

[0008] Preferably, the inner surface of the bracket is fixedly connected to the housing, and the turntable extends through the housing and into the interior of the housing from a position away from the bracket.

[0009] Preferably, the contact ring is fixedly connected to the sliding sleeve at a position away from the diverter blade, and the auxiliary frame is slidably connected to the mounting sleeve at a position close to the diverter blade.

[0010] Preferably, the auxiliary frame includes a fixing ring, a connecting plate is fixedly connected to the outer surface of the fixing ring, a side bracket is fixedly connected to the side of the connecting plate away from the fixing ring, and an abutment block is fixedly connected to the side of the side bracket away from the connecting plate. The side bracket and the abutment block cooperate to contact the mounting sleeve and the diverter blade, and there is a gap between the two side brackets to allow air circulation. The contact between the side bracket and the abutment block can increase its stability. The abutment block passes through the side bracket and extends to the outside of the side bracket near the connecting plate. A snap-fit ​​plate is fixedly connected to the connecting plate away from the side bracket. The fixing ring fixes the two connecting plates, so that the guide rod on the connecting plate cooperates with the mounting sleeve to guide the movement of the connecting plate, and the snap-fit ​​plate is fixed on the connecting plate.

[0011] Preferably, the inner frame includes a fixed plate, a linkage sleeve is rotatably connected to the inner surface of the fixed plate, an inner plate is fixedly connected to the linkage sleeve away from the fixed plate, and a movable arc plate is rotatably connected to the inner plate away from the linkage sleeve. The inner plate rotates with the linkage sleeve, and the rotation of the inner plate drives the movable arc plate to rotate. When the movable arc plate rotates to contact the diverting blade, the movable arc plate strikes the diverting blade, causing the diverting blade to change its position inside the mounting sleeve. The movable arc plate is circularly arranged on the inner plate, and the striking action of the movable arc plate assists in cleaning the diverting blade. An inner support frame is fixedly connected to the inner surface of the linkage sleeve. The linkage sleeve, near the inner plate, penetrates the fixed plate and extends to the outside of the fixed plate. The fixed plate seals the connection between the linkage sleeve and the turntable, reducing dust contact between the linkage sleeve and the turntable. The fixed plate and the inner support frame work together to reinforce different positions of the linkage sleeve.

[0012] Preferably, the inner support frame includes an abutting sleeve, a stabilizing ring is fixedly connected to the inner surface of the abutting sleeve, and an expanding ring is fixedly connected to the abutting sleeve near the stabilizing ring. The stabilizing ring and the expanding ring cooperate with each other inside the abutting sleeve, and the stabilizing ring extends to the outside of the abutting sleeve. The position where the expanding ring contacts the abutting sleeve has a gap to facilitate air circulation inside the abutting sleeve while reinforcing it. An inner support ring is fixedly connected to the outer surface of the abutting sleeve, and a support column is fixedly connected to the side of the inner support ring near the stabilizing ring. The end of the support column away from the inner support ring is fixedly connected to the abutting sleeve. The inner support ring and the support column contact the abutting sleeve, so that the inner support ring and the support column can support each other, thereby installing the abutting sleeve inside the linkage sleeve. Two support columns are provided on the inner support ring.

[0013] Preferably, the abutting sleeve passes through the inner support ring near the support column and extends to the outside of the inner support ring, and the stabilizing ring passes through the abutting sleeve on the side away from the outer expansion ring and extends to the outside of the abutting sleeve.

[0014] Preferably, the protective assembly includes a protective shell, with a protective tube frame fixedly connected to the bottom of the inner cavity of the protective shell. The protective shell connects to the housing, allowing airflow from inside the housing to pass through. The protective tube frame inside the protective shell can emit disinfection light when not in use, and the space inside the protective shell can collect dust cleaned from inside the housing. The airflow generated by the movement of the internal components of the housing can cool the protective shell. A compression plate is fixedly connected to the protective shell near the protective tube frame. The top of the compression plate penetrates the protective shell and extends to the outside of the protective shell. A protective plate is fixedly connected to the top of the compression plate. When the compression plate contacts the housing inside the protective shell, it is compressed by the pressure of the housing and partially blocks the protective tube frame. A receiving frame is fixedly connected to the top of the inner cavity of the protective shell.

[0015] Preferably, the receiving frame includes a receiving plate, with a movable end rotatably connected to the bottom of the inner cavity of the receiving plate. A detector is fixedly connected to the top of the movable end. The movable end rotates on the receiving plate under the influence of wind force, causing the detector to rotate as well. This allows the detector to detect the wind speed during rotation. Simultaneously, the rotation of the movable end and the detector provides self-protection. A connector is rotatably connected to the top of the detector, and an extension plate is fixedly connected to the bottom of the connector. The side of the extension plate away from the detector is fixedly connected to the receiving plate, and the top of the receiving plate is fixedly connected to the connector. The connector contacts the receiving plate, protecting the components when it contacts the detector. This ensures the connection position of the receiving plate is secure while restricting the installation position of the movable end. Furthermore, the installation position of the connector can be blocked inside the protective shell.

[0016] This invention provides a centrifugal fan with adjustable flow divider blades. It has the following beneficial effects:

[0017] 1. This centrifugal fan with adjustable flow divider blades is equipped with a pressure plate, bracket, casing, and base. The bracket and base work together to create a space for fixing the casing, making it less prone to loosening during installation. This improves the stability of the fan during installation and facilitates the overall installation of the fan for subsequent use. It also increases the sealing of the casing connection points, preventing gaps from forming at the connection points due to shaking during operation. Furthermore, it increases the contact area of ​​the casing. When the ventilation components and inner frame work together, the contact surface of the rotating parts can be adjusted to maintain the fan's operating efficiency.

[0018] 2. This centrifugal fan with adjustable splitter blades uses splitter blades that rotate on the mounting sleeve along with the sliding sleeve. When the splitter blades rotate, they contact the auxiliary frame, which helps maintain stability during adjustment. The movement of the auxiliary frame increases the contact surface during rotation, allowing the contact ring to cooperate with the auxiliary frame to achieve the adjustment function. This allows the airflow to be adjusted without changing the installation position of the splitter blades, and the contact ring can increase the load-bearing capacity of the splitter blades when it contacts them, preventing damage to the splitter blades.

[0019] 3. This centrifugal fan with adjustable splitter blades uses a side bracket and abutment block to contact the mounting sleeve and splitter blades. When the side bracket slides, it can clean the contact area, preventing dust from adhering to the splitter blades during prolonged rotation and affecting subsequent rotation. This ensures stability during dust removal. The contact between the side bracket and the abutment block increases stability and prevents damage to components due to loose connections during guidance. It also facilitates the cooperation between the fixing ring and the connecting plate for airflow guidance.

[0020] 4. This centrifugal fan with adjustable flow divider blades uses a fixing plate to seal the connection between the linkage sleeve and the turntable, preventing the linkage sleeve from loosening or breaking during rotation, thus improving the service life of the linkage sleeve. The fixing plate and the inner support frame work together to reinforce different positions of the linkage sleeve, enabling it to adjust the flow divider blades. It can contact the flow divider blades at different positions during rotation, and the movable arc plate can be used to tap and clean the flow divider blades.

[0021] 5. This centrifugal fan with adjustable diverter blades uses a stabilizing ring and an expanding ring that cooperate within the abutting sleeve to increase the bearing capacity of the abutting sleeve itself, preventing it from loosening and being damaged during rotation. This also prevents the abutting sleeve from falling off at the contact point inside the linkage sleeve. The inner support ring contacts the support column, allowing them to support each other, thereby increasing the bearing capacity at the connection point of the inner support ring and preventing collisions caused by loosening inside the linkage sleeve during rotation.

[0022] 6. This centrifugal fan with adjustable diverter blades is connected to the casing through a protective shell. This prevents harmful bacteria from circulating with the airflow after prolonged use inside the casing, avoids dust that is not discharged with the airflow from entering and storing inside the protective shell, and prevents the temperature inside the protective shell from becoming too high and affecting the operation of the components. When the extrusion plate contacts the casing inside the protective shell, the cooperation between the protective plate and the extrusion plate increases the bearing capacity at the connection point of the components, thereby guiding the airflow into the protective shell and making it less likely for the airflow to blow up the dust inside the protective shell.

[0023] 7. The centrifugal fan with adjustable diverter blades rotates on the receiving plate via the wind force, preventing damage to the receiving plate when it is under pressure inside the protective shell. This also makes it less prone to dust accumulation, which could lead to errors in the contact data. This allows operators to adjust the fan based on the test data. The connector contacts the receiving plate, and the extension plate on the connector increases the contact area after installation. This prevents the moving end from contacting the extension plate when rotating with the detector, and facilitates mutual support between the various components. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a structural schematic diagram of a cross-sectional view of the housing of the present invention;

[0026] Figure 3 This is a schematic diagram of the ventilation component of the present invention;

[0027] Figure 4 This is a schematic diagram of the auxiliary frame of the present invention;

[0028] Figure 5 This is a schematic diagram of the internal frame of the present invention;

[0029] Figure 6 This is a schematic diagram of the internal support frame of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the protective component of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of the support frame of the present invention.

[0032] In the diagram: 1. Base; 2. Bracket; 3. Turntable; 4. Housing; 5. Baffle; 6. Pressure plate; 7. Inner frame; 71. Inner plate; 72. Fixing plate; 73. Movable arc plate; 74. Linkage sleeve; 75. Inner support frame; 751. Abutment sleeve; 752. Stabilizing ring; 753. Support column; 754. Outer expansion ring; 755. Inner support ring; 8. Ventilation assembly; 81. Mounting sleeve; 82. Diverter blades; 83. 84. Sliding sleeve; 85. Contact ring; 86. Auxiliary frame; 87. Connecting plate; 88. Abutment block; 89. Side connection frame; 80. Fixing ring; 81. Snap-fit ​​plate; 92. Protective assembly; 93. Protective shell; 94. Protective pipe rack; 95. Protective plate; 96. Extrusion plate; 97. Support frame; 98. Support plate; 99. Movable end; 90. Detector; 91. Extension plate; 92. Connector. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0034] Example 1, please refer to Figures 1-8 The present invention provides a technical solution: a centrifugal fan with adjustable flow divider blades, including a base 1.

[0035] Turntable 3 rotates with the motor. A housing 4 is rotatably connected to the outer surface of turntable 3. A baffle 5 is fixedly connected to the outer surface of housing 4. A protective component 9 is connected to the housing 4 away from the baffle 5. The bottom of the protective component 9 is fixedly connected to the base 1. A bracket 2 is fixedly connected to the top of the base 1. A pressure plate 6 is rotatably connected to the housing 4 away from turntable 3. A ventilation component 8 is rotatably connected to the inner surface of housing 4. An inner frame 7 is rotatably connected to the inner surface of ventilation component 8. The bracket 2 and base 1 cooperate to create a space for fixing housing 4, preventing loosening during installation and improving the stability of the fan during installation. This facilitates the overall maintenance of the fan during subsequent use. The installation of the rotating plate 3 on the housing 4 is such that it rotates with the motor, thereby providing power to the fan. The pressure plate 6 is circular and installed on the housing 4. The sliding of the pressure plate 6 can fix the connection port of the housing 4, thereby increasing the sealing of the connection position of the housing 4 and preventing gaps from appearing at the connection position due to shaking of the housing 4 during operation. The pressure plate 6 can adjust the contact angle and area when rotating, which is convenient for adjustment according to different connecting parts, so that it can be fully fixed when in contact, thereby increasing the contact area of ​​the housing 4. When the ventilation component 8 and the inner frame 7 are in cooperation, the contact surface of the rotating parts can be adjusted to maintain the working efficiency of the fan.

[0036] The ventilation assembly 8 includes a sliding sleeve 83 that rotates with the turntable 3. A mounting sleeve 81 is fixedly connected to the outer surface of the sliding sleeve 83, and a flow divider blade 82 is fixedly connected to the inner surface of the mounting sleeve 81. Both ends of the flow divider blade 82 penetrate the mounting sleeve 81 and extend to the outside of the mounting sleeve 81. An auxiliary frame 85 is slidably connected to the flow divider blade 82 near the mounting sleeve 81. A contact ring 84 is rotatably connected to the mounting sleeve 81 near the sliding sleeve 83. The flow divider blade 82 rotates on the mounting sleeve 81 with the sliding sleeve 83, causing the sliding sleeve 83 to contact the turntable 3 and rotate with it, thereby providing power for the rotation of the mounting sleeve 81 and facilitating its rotation. Furthermore, the diverter blade 82 penetrates the mounting sleeve 81, so that the diverter blade 82 contacts the auxiliary frame 85 when it rotates. As the auxiliary frame 85 slides while the mounting sleeve 81 rotates, it can be adjusted to different positions, making it easy to maintain its stability during adjustment. The movement of the auxiliary frame 85 can increase the contact surface during rotation. The cooperation between the auxiliary frame 85 and the contact ring 84 protects its contact position, so that when the contact ring 84 contacts the sliding sleeve 83, it can cooperate with the auxiliary frame 85 to achieve the adjustment function, so that the installation position of the diverter blade 82 remains unchanged to adjust the wind force. Moreover, when the contact ring 84 contacts the diverter blade 82, it can increase the bearing capacity of the diverter blade 82 and prevent the diverter blade 82 from being damaged.

[0037] The end of the sliding sleeve 83 away from the contact ring 84 passes through the mounting sleeve 81 and extends to the outside of the mounting sleeve 81, while the end of the sliding sleeve 83 away from the mounting sleeve 81 is fixedly connected to the turntable 3.

[0038] The inner surface of the bracket 2 is fixedly connected to the housing 4, and the turntable 3, located away from the bracket 2, penetrates the housing 4 and extends into the interior of the housing 4.

[0039] The contact ring 84 is fixedly connected to the sliding sleeve 83 at a position away from the diverter blade 82, and the auxiliary frame 85 is slidably connected to the mounting sleeve 81 at a position close to the diverter blade 82.

[0040] The auxiliary frame 85 includes a fixed ring 854, with a connecting plate 851 fixedly connected to its outer surface. A side bracket 853 is fixedly connected to the side of the connecting plate 851 away from the fixed ring 854, and an abutment block 852 is fixedly connected to the side of the side bracket 853 away from the connecting plate 851. The side bracket 853 and the abutment block 852 engage to contact the mounting sleeve 81 and the diverting vane 82, allowing the side bracket 853 to clean the contact area as it slides. This prevents dust from adhering to the diverting vane 82 during prolonged rotation, thus avoiding its impact on subsequent rotation. Furthermore, the gap between the two side brackets 853 allows for airflow, enabling the cleaned dust to fall off, maintaining stability during dust removal. The contact between the side bracket 853 and the abutment block 852 increases stability and prevents misalignment. When the connection position becomes loose, jamming occurs, causing damage to the component. The abutment block 852 passes through the side frame 853 near the connecting plate 851 and extends to the outside of the side frame 853. The connecting plate 851 is fixedly connected to the snap-fit ​​plate 855 away from the side frame 853. The two connecting plates 851 are fixed by the fixing ring 854, so that the guide rod on the connecting plate 851 cooperates with the mounting sleeve 81 to guide the movement of the connecting plate 851, so that the connecting plate 851 can move in a straight line. During the movement, it cooperates with the fixing ring 854 to keep the connection position firm. The snap-fit ​​plate 855 is fixed on the connecting plate 851, so that the snap-fit ​​plate 855 cooperates with the side frame 853 to limit the contact position, so as to avoid shaking during the movement and affect the rotation of the splitter blade 82. It is also convenient for the fixing ring 854 and the connecting plate 851 to guide the wind force.

[0041] The inner frame 7 includes a fixed plate 72, with a linkage sleeve 74 rotatably connected to the inner surface of the fixed plate 72. An inner plate 71 is fixedly connected to the linkage sleeve 74 away from the fixed plate 72, and a movable arc plate 73 is rotatably connected to the inner plate 71 away from the linkage sleeve 74. The inner plate 71 rotates with the linkage sleeve 74, causing the movable arc plate 73 to rotate. This rotation increases the contact area. As the movable arc plate 73 rotates to contact the diverter blade 82, it strikes the diverter blade 82, causing the blade to change position within the mounting sleeve 81, thus adjusting the diverter blade 82. The movable arc plate 73 is circularly arranged on the inner plate 71, allowing it to contact different positions of the diverter blade 82 during rotation. The tapping of the arc plate 73 assists in cleaning the diverter blades 82. An inner support frame 75 is fixedly connected to the inner surface of the linkage sleeve 74. The linkage sleeve 74 passes through the fixed plate 72 near the inner connecting plate 71 and extends to the outside of the fixed plate 72. The fixed plate 72 seals the connection between the linkage sleeve 74 and the turntable 3, reducing dust contact between the linkage sleeve 74 and the turntable 3. The interior of the linkage sleeve 74 is reinforced by the inner support frame 75, which increases the strength of the linkage sleeve 74 and prevents it from loosening or breaking during rotation, thereby improving the service life of the linkage sleeve 74. The fixed plate 72 and the inner support frame 75 work together to reinforce different parts of the linkage sleeve 74, thus extending the service life of the linkage sleeve 74.

[0042] The inner support frame 75 includes an abutment sleeve 751. A retaining ring 752 is fixedly connected to the inner surface of the abutment sleeve 751. An expanding ring 754 is fixedly connected to the abutment sleeve 751 near the retaining ring 752. The retaining ring 752 and the expanding ring 754 cooperate with each other inside the abutment sleeve 751 to increase the bearing capacity of the abutment sleeve 751 and prevent it from loosening and being damaged during rotation. The retaining ring 752 extends to the outside of the abutment sleeve 751, which increases the contact area of ​​the abutment sleeve 751 and prevents the abutment sleeve 751 from falling off at the contact position inside the linkage sleeve 74. The expanding ring 754 has a gap at the contact position with the abutment sleeve 751 to facilitate air circulation inside the abutment sleeve 751 while reinforcing it, preventing the resistance to rotation of the component from increasing due to poor air circulation. The outer surface of the abutment sleeve 751 is fixedly connected to the retaining ring 751. An inner support ring 755 is fixedly connected to the inner support ring 755. A support column 753 is fixedly connected to the side of the inner support ring 755 near the stabilizing ring 752. The end of the support column 753 away from the inner support ring 755 is fixedly connected to the abutting sleeve 751. The inner support ring 755 and the support column 753 contact the abutting sleeve 751, so that the inner support ring 755 and the support column 753 can support each other, thereby increasing the bearing capacity of the connection position of the inner support ring 755. The support column 753 can increase the contact area of ​​the abutting sleeve 751, thereby installing the abutting sleeve 751 inside the linkage sleeve 74 and avoiding collisions caused by loosening of the linkage sleeve 74 during rotation. Two support columns 753 are provided on the inner support ring 755, which can increase the stability of the installation position of the support column 753, thereby increasing the bearing capacity of the flow into the inner support ring 755. The inner support ring 755 and the abutting sleeve 751 cooperate to block the flow of wind.

[0043] The abutting sleeve 751, located near the support column 753, passes through the inner support ring 755 and extends to the outside of the inner support ring 755. The stabilizing ring 752, located away from the outer expansion ring 754, passes through the abutting sleeve 751 and extends to the outside of the abutting sleeve 751.

[0044] The protective component 9 includes a protective shell 91. A protective tube frame 92 is fixedly connected to the bottom of the inner cavity of the protective shell 91. The protective shell 91 connects to the housing 4, allowing airflow from inside the housing 4 to pass through the protective shell 91. The protective tube frame 92 inside the protective shell 91 can irradiate disinfecting light when not in use, thereby disinfecting the components inside the housing 4 and preventing harmful bacteria from circulating with the airflow after prolonged use. The space inside the protective shell 91 can also collect dust cleaned from inside the housing 4, preventing dust that has not been expelled by the airflow from entering and being stored inside the protective shell 91. The airflow generated by the movement of the components inside the housing 4 can cool the protective shell 91, preventing excessively high internal temperatures from affecting the operation of the components. A clamp is fixedly connected to the protective shell 91 near the protective tube frame 92. The top of the pressure plate 94 penetrates through the protective shell 91 and extends to the outside of the protective shell 91. A protective plate 93 is fixedly connected to the top of the pressure plate 94. When the pressure plate 94 contacts the housing 4 inside the protective shell 91, it is compressed by the pressure of the housing 4, so that the protective plate 93 on the pressure plate 94 contacts the housing 4. The protective plate 93 can protect the components and partially block the protective tube frame 92. The protective plate 93 and the pressure plate 94 work together to increase the bearing capacity of the component connection position, thereby guiding the wind into the protective shell 91. This makes it difficult for the wind to blow up the dust inside the protective shell 91, which is convenient for protecting the pressure plate 94 and preventing the pressure plate 94 from contracting when rotating, which would reduce the contact area of ​​the components. A receiving frame 95 is fixedly connected to the top of the inner cavity of the protective shell 91.

[0045] The receiving frame 95 includes a receiving plate 951. A movable end 952 is rotatably connected to the bottom of the inner cavity of the receiving plate 951. A detector 953 is fixedly connected to the top of the movable end 952. The movable end 952 rotates on the receiving plate 951 under the influence of wind force. As the movable end 952 rotates, it drives the detector 953 to rotate as well, allowing the detector 953 to detect the wind speed. During the detection process, the detector 953 and the movable end 952 work together to protect the internal space of the receiving plate 951, preventing damage to the receiving plate 951 when subjected to pressure inside the protective shell 91. Simultaneously, the rotation of the movable end 952 and the detector 953 protects themselves from dust accumulation, preventing data errors and allowing operators to adjust the detection based on the data. A connector 955 is rotatably connected to the top of the device 953, and an extension plate 954 is fixedly connected to the bottom of the connector 955. The side of the extension plate 954 away from the detector 953 is fixedly connected to the receiving plate 951, and the top of the receiving plate 951 is fixedly connected to the connector 955. The connector 955 contacts the receiving plate 951, so that the connector 955 can protect the component when it contacts the detector 953. After the extension plate 954 on the connector 955 is installed, it can increase the contact area, so that it keeps the connection position of the receiving plate 951 firm while restricting the installation position of the movable end 952, preventing the movable end 952 from contacting the extension plate 954 when the detector 953 rotates. This facilitates mutual support of the components, thereby improving the stability of the component connection position. Moreover, the installation position of the connector 955 can be blocked inside the protective shell 91.

[0046] Example 2, please refer to Figures 1-8 Based on Example 1, the present invention provides a technical solution: a method of using a centrifugal fan with adjustable diverter blades. Step 1: connect the air outlet of the casing 4 to the pipe, and use the bracket 2 to install and fix the casing 4. The air inlet of the casing 4 has a circularly distributed pressure plate 6 that can be rotated to adjust the contact area and angle. The motor drives the turntable 3 to rotate on the casing 4.

[0047] Step 2: The rotation of turntable 3 drives the mounting sleeve 81 to rotate via sliding sleeve 83. As mounting sleeve 81 rotates, the diverter blade 82 generates wind force. The contact ring 84 moves with sliding sleeve 83 and mounting sleeve 81. When the diverter blade 82 rotates, it contacts the abutment block 852 and side bracket 853, and then slides back and forth between the two diverter blades 82. During the movement, connecting plate 851 and fixing ring 854 move together.

[0048] Step 3: When the mounting sleeve 81 rotates, the linkage sleeve 74 contacts the turntable 3 on the fixed plate 72 and rotates together with the mounting sleeve 81. The movable arc plate 73 rotates on the inner plate 71 with the linkage sleeve 74, so that the movable arc plate 73 automatically swings outward when rotating, and the rotation of the movable arc plate 73 is used to adjust the contact area of ​​the diverter blade 82.

[0049] Step 4: The inner support ring 755 contacts the linkage sleeve 74, and the inner support ring 755 is reinforced by the support column 753 on the abutting sleeve 751. The inner support ring 755 rotates with the linkage sleeve 74 through contact. The stabilizing ring 752 and the outer expansion ring 754 play a supporting role inside the abutting sleeve 751, ensuring the contact surface when the abutting sleeve 751 rotates.

[0050] Step 5: The protective shell 91 connects to the housing 4. The protective tube frame 92 generates disinfection light to irradiate the inside of the housing 4, thereby disinfecting the inside of the housing 4. The extrusion plate 94 extrudes the housing 4 inside the protective shell 91. As the protective plate 93 on the extrusion plate 94 comes into contact with the housing 4, the dust inside the housing 4 can fall into the protective shell 91 for placement.

[0051] Step Six: As the housing 4 operates, the connector 955 operates, and the detector 953 detects the airflow speed between the housing 4 and the protective housing 91 on the connector 955. The movable end 952 rotates as airflow is generated inside the protective housing 91, and the receiving plate 951 presses the connector 955 tightly, so that the connector 955 is installed inside the protective housing 91.

[0052] 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 and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A centrifugal fan with adjustable flow divider blades, comprising a base (1), characterized in that: A turntable (3) is used to rotate with a motor. The outer surface of the turntable (3) is rotatably connected to a housing (4). A baffle (5) is fixedly connected to the outer surface of the housing (4). A protective component (9) is connected to the housing (4) away from the baffle (5). The bottom of the protective component (9) is fixedly connected to a base (1). A bracket (2) is fixedly connected to the top of the base (1). A pressure plate (6) is rotatably connected to the housing (4) away from the turntable (3). A ventilation component (8) is rotatably connected to the inner surface of the housing (4). An inner frame (7) is rotatably connected to the inner surface of the ventilation component (8). The inner frame (7) includes a fixed plate (72), a linkage sleeve (74) is rotatably connected to the inner surface of the fixed plate (72), an inner plate (71) is fixedly connected to the linkage sleeve (74) away from the fixed plate (72), a movable arc plate (73) is rotatably connected to the inner plate (71) away from the linkage sleeve (74), and an inner support frame (75) is fixedly connected to the inner surface of the linkage sleeve (74). The inner support frame (75) includes an abutting sleeve (751), a stabilizing ring (752) is fixedly connected to the inner surface of the abutting sleeve (751), an outer expansion ring (754) is fixedly connected to the abutting sleeve (751) near the stabilizing ring (752), an inner support ring (755) is fixedly connected to the outer surface of the abutting sleeve (751), a support column (753) is fixedly connected to the side of the inner support ring (755) near the stabilizing ring (752), and the end of the support column (753) away from the inner support ring (755) is fixedly connected to the abutting sleeve (751). The linkage sleeve (74) passes through the fixing plate (72) near the inner plate (71) and extends to the outside of the fixing plate (72). The ventilation assembly (8) includes a sliding sleeve (83) that rotates with the turntable (3). An installation sleeve (81) is fixedly connected to the outer surface of the sliding sleeve (83). A diverter blade (82) is fixedly connected to the inner surface of the installation sleeve (81). Both ends of the diverter blade (82) pass through the installation sleeve (81) and extend to the outside of the installation sleeve (81). An auxiliary frame (85) is slidably connected to the diverter blade (82) near the installation sleeve (81). A contact ring (84) is rotatably connected to the installation sleeve (81) near the sliding sleeve (83). The auxiliary frame (85) includes a fixing ring (854), a connecting plate (851) is fixedly connected to the outer surface of the fixing ring (854), a side bracket (853) is fixedly connected to the side of the connecting plate (851) away from the fixing ring (854), an abutment block (852) is fixedly connected to the side of the side bracket (853) away from the connecting plate (851), the abutment block (852) passes through the side bracket (853) and extends to the outside of the side bracket (853) near the connecting plate (851), and a snap-fit ​​plate (855) is fixedly connected to the connecting plate (851) away from the side bracket (853).

2. A centrifugal fan with adjustable flow divider blades according to claim 1, characterized in that: The end of the sliding sleeve (83) away from the contact ring (84) passes through the mounting sleeve (81) and extends to the outside of the mounting sleeve (81). The end of the sliding sleeve (83) away from the mounting sleeve (81) is fixedly connected to the turntable (3).

3. A centrifugal fan with adjustable flow divider blades according to claim 1, characterized in that: The inner surface of the bracket (2) is fixedly connected to the housing (4), and the turntable (3) extends through the housing (4) and into the interior of the housing (4) from a position away from the bracket (2).

4. A centrifugal fan with adjustable flow divider blades according to claim 1, characterized in that: The contact ring (84) is fixedly connected to the sliding sleeve (83) at a position away from the diverter blade (82), and the auxiliary frame (85) is slidably connected to the mounting sleeve (81) at a position close to the diverter blade (82).

5. A centrifugal fan with adjustable flow divider blades according to claim 1, characterized in that: The abutting sleeve (751) near the support column (753) passes through the inner support ring (755) and extends to the outside of the inner support ring (755). The stabilizing ring (752) on the side away from the outer expansion ring (754) passes through the abutting sleeve (751) and extends to the outside of the abutting sleeve (751).

6. A centrifugal fan with adjustable flow divider blades according to claim 1, characterized in that: The protective assembly (9) includes a protective shell (91), a protective tube frame (92) is fixedly connected to the bottom of the inner cavity of the protective shell (91), an extrusion plate (94) is fixedly connected to the protective shell (91) near the protective tube frame (92), the top of the extrusion plate (94) penetrates the protective shell (91) and extends to the outside of the protective shell (91), a protective plate (93) is fixedly connected to the top of the extrusion plate (94), and a receiving frame (95) is fixedly connected to the top of the inner cavity of the protective shell (91).

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