A crossflow fan with an adjustable volute device

Abstract

This invention discloses a cross-flow fan with an adjustable volute tongue device. The invention relates to the field of cross-flow fan technology and includes a housing. A motor is mounted on one side of the housing, and the output shaft of the motor extends into the housing and connects to an impeller. The impeller is installed inside the housing, and a volute tongue is installed inside the housing, positioned on one side of the impeller. A dust collection wheel is installed inside the impeller. The volute tongue includes a guide tongue plate, the two ends of which are connected to the inner edge surface of the housing. This cross-flow fan with an adjustable volute tongue device guides air through an air duct formed by the housing via the motor and impeller. During this process, the dust collection wheel inside the impeller filters and adsorbs dust and impurities in the air, and the volute tongue guides and silences the air guided by the impeller, thereby improving the efficiency and utilization efficiency of the cross-flow fan in guiding air.

Description

Technical Field

[0001] The invention relates to the technical field of cross-flow fans, and in particular to a cross-flow fan with an adjustable volute tongue device. Background Art

[0002] A crossflow fan, also known as a crossflow fan, is an air circulation device. Its characteristic is that the airflow flows in along the fan axis, and then flows out almost parallel to the fan blades, so that the crossflow fan can provide relatively uniform airflow distribution in a limited space. It is suitable for application scenarios that require a large area and low wind pressure. The crossflow fan is mainly composed of three parts: a motor, a wind wheel and a casing. There is a vertical angle between the air at the exhaust position and the casing, so vortices will be generated, forming a sound wall and generating noise. Therefore, a volute tongue is usually added to the crossflow fan. It is set at the exhaust position of the crossflow fan to guide the airflow to reduce the impact of the vortex.

[0003] The volute tongue in existing cross-flow fans is often composed of a single angle or shape, and it is difficult to make adaptive adjustments according to wind force or airflow size when guiding the airflow. As a result, when the wind speed increases and the airflow velocity increases, the volute tongue's guidance will produce a large noise problem, which in turn affects the user experience of the cross-flow fan. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a crossflow fan with an adjustable volute tongue device, comprising a casing, which is the main body shell of the crossflow fan and plays a role in supporting and protecting the internal structure. A motor is installed on one side of the casing, and the output shaft of the motor extends to the inside of the casing and is connected to a wind wheel. The motor provides power to drive the wind wheel to rotate. The wind wheel generates airflow under the drive of the motor. The wind wheel is installed inside the casing, and a volute tongue is installed inside the casing. The volute tongue adjusts the airflow and guides the airflow to reduce noise. The volute tongue is used to guide air flow and change the air flow path. The volute tongue is arranged on one side of the wind wheel. A dust collecting wheel is installed inside the wind wheel, and the dust collecting wheel is used to collect and filter dust impurities.

[0005] Among them, the volute tongue includes a drainage tongue plate component, which has a drainage effect on the airflow, and both ends of the drainage tongue plate component are connected to the inner edge surface of the casing, and a drainage sound-absorbing plate component is installed on the surface of the drainage tongue plate component on the side away from the wind wheel. The drainage sound-absorbing plate component can absorb noise and reduce the noise level, and can also guide the air flow, and the drainage sound-absorbing plate component is connected to the bottom surface of the inner wall of the casing, and a blocking tongue plate component is provided on the side of the drainage tongue plate component away from the wind wheel. The blocking tongue plate component is used to limit and adjust the airflow, and the blocking tongue plate component is connected to the inner edge surface of the casing, and the blocking tongue plate component is located obliquely above the drainage tongue plate component and the drainage sound-absorbing plate component.

[0006] Preferably, the casing includes a first side, the side of the motor is fixed to the outer surface of the first side, a bottom plate is fixedly installed on the inner bottom end of the first side, a second side is fixedly installed on the side surface of the bottom plate away from the first side, and the second side and the first side are located on the same axis, a surrounding plate is fixedly installed on the outer edge surfaces of the first and second sides, one side surface of the bottom plate is fixed to the bottom end of one side surface of the surrounding plate, the first side, the second side, the surrounding plate and the bottom plate together constitute the overall frame of the fan, and the surrounding plate is used to limit the airflow range and enhance the structural stability, and the bottom plate is used to provide bottom support and cooperate with the surrounding plate to form an air duct.

[0007] Preferably, the wind wheel includes a middle disk, the side surface of the middle disk rotates with the inner surface of the first side, and the output shaft of the motor passes through the first side and rotates with the inner wall of the first side, the end of the output shaft of the motor is fixed to the side surface of the middle disk, and blades are fixedly installed on the side of the middle disk away from the first side. The middle disk supports and fixes the blades. A plurality of blades are provided and evenly spaced on the side of the middle disk. The blades are used to promote air flow and are key components for generating wind.

[0008] Preferably, the middle plate is symmetrically arranged about the center line of the enclosure plate, one of the middle plates rotates with the inner surface of the first side, and the other middle plate rotates with the inner surface of the second side, and a swivel plate is fixedly installed on the outer surface of the middle plate, and the outer edge surface of the swivel plate rotates with the inner surface of the first side and the inner surface of the second side respectively.

[0009] Preferably, the drainage tongue plate member includes a fixed arc plate, which plays a role of fixing and supporting, the two ends of the fixed arc plate are respectively fixed to the inner surfaces of the first side and the second side, and the bottom surface of the fixed arc plate is fixed to the top of the bottom plate, and a flexible volute tongue sleeve is fixedly connected to the outer edge surface of the fixed arc plate, and the flexible volute tongue sleeve plays a role of flexibly adjusting the volute tongue to adapt to changes in wind force, and a drainage groove is provided on the top of the flexible volute tongue sleeve, and a flow groove is provided at the bottom of the drainage groove, and the drainage groove and the flow groove are flow paths for guiding airflow, and a fixing rod is fixedly installed on the inner edge surface of the flexible volute tongue sleeve away from the fixed arc plate, and the fixing rod plays a role of fixed support, and the fixing rod A rotating plate is provided on one side close to the fixed arc plate, and two ends of the rotating plate rotate with the inner surfaces of the first side and the second side, so that the shape of the flexible volute tongue sleeve can be adjusted by the rotating plate, and a support plate is fixedly installed on the outer edge surface of the rotating plate, and the outer edge surface of the support plate is adapted to fit the inner edge surface of the flexible volute tongue sleeve, and the two ends of the support plate rotate with the inner surfaces of the first side and the second side, and the support plate provides support for the shape of the flexible volute tongue sleeve, and an elastic bent plate is fixedly installed on the outer edge surface of the fixed rod, and the end of the elastic bent plate away from the fixed rod is fixed to the outer edge surface of the rotating plate, and the elastic bent plate has a certain elasticity, which can enable the rotating plate to achieve a reset effect.

[0010] Preferably, the guide sound-absorbing panel comprises an inclined sound-absorbing panel, both ends of the inclined sound-absorbing panel are fixed to the inner surfaces of the first side and the second side, one side of the inclined sound-absorbing panel is fixed to the outer edge surface of the fixed arc plate, the bottom surface of the inclined sound-absorbing panel is fixed to the top of the bottom plate, the inclined sound-absorbing panel is a polyester fiber sound-absorbing panel, the inclined sound-absorbing panel plays an effect of assisting sound absorption and guiding air flow, and a choke groove is provided on the top of the inclined sound-absorbing panel, which is used to guide the airflow.

[0011] Preferably, the baffle tongue plate component includes a shaft rod, which is a component for connecting and rotating, and two ends of the shaft rod rotate with the inner surface of the first side edge and the second side edge, and a baffle arc plate is fixedly installed on the outer edge surface of the shaft rod, and the baffle arc plate plays a role of blocking and regulating airflow, and the two ends of the baffle arc plate rotate with the inner surface of the first side edge and the second side edge, and the bottom end of the outer arc surface of the baffle arc plate is fixedly connected with a connecting block, and the connecting block is symmetrically arranged about the center line of the shaft rod, and the side surfaces of the two connecting blocks slide with the inner surface of the first side edge and the second side edge respectively, and the outer edge surface of the connecting block away from the baffle arc plate is fixedly connected with an elastic strip, and the elastic strip plays a function of elastic pulling, and the side surfaces of the two elastic strips slide with the inner surface of the first side edge and the second side edge respectively, and one end of the elastic strip away from the connecting block is fixedly connected with a fixed block, and the fixed block is used to fix the elastic strip, and the side surfaces of the two fixed blocks are respectively fixed to the inner surface of the first side edge and the second side edge.

[0012] Preferably, an inclined guide plate is fixedly installed on the inner side of the first side and the second side, and the inclined guide plate is arranged above the base plate and located on the outer side of the wind wheel. The inclined guide plate is used to guide the direction of the airflow. The inner surfaces of the first side and the second side are provided with a rotation groove, and the rotation groove is used to cooperate with the rotating ring plate to provide space and guide for the rotation of the middle disk and the blades. The outer edge surface of the rotating ring plate rotates with the inner wall of the rotation groove. A through groove is provided on the outer edge surface of the second side, and a mounting cover plate is detachably mounted on the inner wall of the through groove, and the mounting cover plate is used to install and fix the dust collecting wheel.

[0013] Preferably, the dust collecting wheel includes a connecting plate, two of which are provided, the two connecting plates are respectively in contact with the inner surface of the middle plate located on the first side and the second side, a limiting rod is fixedly installed on the inner surface of the middle plate close to the first side, the connecting plate is detachably installed on the outer edge surface of the limiting rod, and the end of the limiting rod away from the middle plate is plugged into the inner wall of the mounting cover.

[0014] Preferably, an axial column is fixedly installed in the middle of the inner surface of the connecting plate, and the axial column plays a supporting role. An installation groove is opened on the outer edge surface of the axial column, and a dust filter arc plate is fixedly installed on the inner wall of the installation groove. The dust filter arc plate plays a role of filtering dust, and the installation groove is used to install the dust filter arc plate.

[0015] The present invention provides a crossflow fan with an adjustable volute tongue device. It has the following beneficial effects:

[0016] 1. The cross-flow fan with an adjustable volute tongue device guides the air to circulate through the air duct formed by the casing through the cooperation of the motor and the wind wheel. During this process, the dust collecting wheel provided in the wind wheel is used to filter and adsorb dust impurities in the air, and the volute tongue is used to guide and silence the air guided by the wind wheel, thereby improving the efficiency and utilization efficiency of the cross-flow fan in guiding the air.

[0017] 2. The cross-flow fan with an adjustable volute tongue device drives the center disk and blades to rotate through a motor to allow air to circulate in the casing, utilizes a guide tongue plate to divert the air, and cooperates with a baffle tongue plate to block part of the diverted air, thereby changing the air flow path and causing the diverted air to collide with each other to form a turbulent effect, thereby preventing the air from directly contacting the casing to form a vortex and generate noise. In addition, the guide sound-absorbing plate is used to contact the diverted air, allowing the air to flow smoothly to the inner wall of the casing, thereby reducing the impact caused by the contact between the air and the inner wall of the casing, thereby effectively improving the guide and noise reduction effect of the volute tongue.

[0018] 3. The cross-flow fan with an adjustable volute tongue device guides the air by setting a fixed arc plate and a flexible volute tongue sleeve, and disperses the air in the drainage groove. The air entering the flexible volute tongue sleeve through the drainage groove flows back under the influence of the rotating plate and interferes with each other, reducing the flow rate of the air in the flexible volute tongue sleeve, and then cooperates with the inclined sound absorbing plate and the choke groove to smoothly transfer the air to the bottom plate to avoid the formation of vortex. When the air flow rate increases, the air entering the flexible volute tongue sleeve blows toward the rotating plate and the support plate, causing the rotating plate to deflect, thereby causing the flexible volute tongue sleeve to be pulled and deformed, so that the residual air of the diversion is quickly guided to the choke tongue plate component, and the choke tongue plate component is used to block the air, and then the relative angle between the choke tongue plate component and the drainage tongue plate component is adjusted to enhance the drainage effect.

[0019] Fourth, the cross-flow fan with an adjustable volute tongue device receives the diverted air through the baffle arc plate, cooperates with the arc setting of the baffle arc plate to change the air flow path, and uses the impact of air on the baffle arc plate to rotate the shaft rod, so as to divert the air into two directions through the baffle arc plate. The air in the two directions respectively converges with the air guided by the inclined guide plate and the air guided by the guide and sound-absorbing plate, and is affected by the flow effect of the air to form a stable air flow, thereby ensuring the air guiding efficiency of the cross-flow fan and improving the noise reduction performance of the volute tongue.

[0020] 5. The cross-flow fan with an adjustable volute device rotates the blades through the cooperation of the motor and the center disk to guide the air flow. The flow of air between the blades is utilized in conjunction with the opening of the mounting groove on the shaft column to increase the flow time of the air in the mounting groove, so that the air contacts the dust filter arc plate, and cooperates with the dust filter arc plate to absorb dust and impurities in the air, thereby improving the cleanliness of the guided air to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the external structure of a crossflow fan with an adjustable volute tongue device according to the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the volute tongue of the present invention;

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the drainage tongue plate and the sound absorbing plate of the present invention;

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the baffle tongue member of the present invention;

[0027] Figure 7 It is a schematic diagram of the decomposition structure of the present invention;

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the motor, the wind wheel and the mounting cover plate of the present invention;

[0029] Fig. 9 It is a schematic diagram of the cross-sectional structure of the motor, wind wheel and dust collecting wheel of the present invention.

[0030] In the figure: 1, housing; 11, first side; 12, second side; 13, enclosure; 14, bottom plate; 15, inclined guide plate; 16, rotating groove; 17, mounting cover plate; 2, motor; 3, wind wheel; 31, middle plate; 32, blades; 33, rotating ring plate; 4, volute tongue; 41, drainage tongue plate; 411, fixed arc plate; 412, flexible volute tongue sleeve; 413, drainage groove; 414, fixing rod; 415 , rotating plate; 416, supporting plate; 417, elastic bent plate; 42, baffle tongue plate; 421, shaft; 422, baffle arc plate; 423, elastic strip; 424, fixing block; 425, connecting block; 43, guide sound-absorbing plate; 431, inclined sound-absorbing plate; 432, baffle groove; 5, dust collecting wheel; 51, shaft column; 52, mounting groove; 53, dust filter arc plate; 54, limit rod; 55, connecting plate. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0032] The first embodiment, as Figures 1 to 4As shown, the present invention provides a technical solution: a cross-flow fan with an adjustable volute tongue device, comprising a casing 1, a motor 2 is installed on one side of the casing 1, the output shaft of the motor 2 extends to the inside of the casing 1 and is connected to a wind wheel 3, the wind wheel 3 is installed in the casing 1, a volute tongue 4 is installed in the casing 1, the volute tongue 4 is used to guide air flow and change the air flow path, the volute tongue 4 is arranged on one side of the wind wheel 3, a dust collecting wheel 5 is installed in the wind wheel 3, the air is guided by the motor 2 and the wind wheel 3 to flow through the air duct formed by the casing 1, and the dust collecting wheel 5 arranged in the wind wheel 3 is used to filter and adsorb dust impurities in the air, and the volute tongue 4 is used to guide and silence the air guided by the wind wheel 3 , improve the efficiency and utilization efficiency of the cross-flow fan when guiding air, the housing 1 includes a first side 11, the side of the motor 2 is fixed to the outer surface of the first side 11, a bottom plate 14 is fixedly installed on the inner bottom end of the first side 11, a second side 12 is fixedly installed on the side surface of the bottom plate 14 away from the first side 11, and the second side 12 and the first side 11 are located on the same axis, a surrounding plate 13 is fixedly installed on the outer edge surface of the first side 11 and the second side 12, a side surface of the bottom plate 14 is fixed to the bottom end of a side surface of the surrounding plate 13, and the first side 11 and the second side 12 are used as side supports, and the surrounding plate 13 and the bottom plate 14 form an air flow passage;

[0033] The volute tongue 4 includes a drainage tongue plate 41, both ends of which are connected to the inner edge surface of the casing 1, a drainage sound-absorbing plate 43 is installed on the surface of the drainage tongue plate 41 away from the wind wheel 3, and the drainage sound-absorbing plate 43 is connected to the bottom surface of the inner wall of the casing 1, and a blocking tongue plate 42 is arranged on the side of the drainage tongue plate 41 away from the wind wheel 3, and the blocking tongue plate 42 is connected to the inner edge surface of the casing 1, and the blocking tongue plate 42 is located obliquely above the drainage tongue plate 41 and the drainage sound-absorbing plate 43, and the wind is driven by the motor 2. The wheel 3 rotates to allow air to circulate in the casing 1. The air is diverted by the guide tongue plate 41, and the blocking tongue plate 42 is used to block part of the diverted air, thereby changing the air flow path, causing the diverted air to collide with each other to form a turbulent effect, and avoiding direct contact between the air and the casing 1 to form vortices and generate noise. In addition, the guide sound-absorbing plate 43 is used to contact the diverted air, so that the air can flow smoothly to the inner wall of the casing 1, reducing the impact caused by the contact between the air and the inner wall of the casing 1, thereby effectively improving the guide and noise reduction effect of the volute tongue 4.

[0034] During operation, the motor 2 is started, and the wind wheel 3 is driven to rotate by the motor 2. The dust collecting wheel 5 provided in the wind wheel 3 is used to filter and adsorb dust impurities in the air, so that the air can circulate in the casing 1, and the air is guided to circulate through the air duct formed by the casing 1. The air is then diverted by the diversion tongue plate 41, and the baffle tongue plate 42 is used to block part of the diverted air, so as to change the air flow path, so that the diverted air collides with each other to form turbulence, and the diversion sound-absorbing plate 43 is used to contact the diverted air, so that the air can flow smoothly to the inner wall of the casing 1, thereby reducing the impact caused by the contact between the air and the inner wall of the casing 1 and improving the diversion and noise reduction effect of the volute tongue 4.

[0035] The second embodiment is based on the first embodiment. Figure 2 , Figure 3 , Figure 7 , Figure 8 , Fig. 9 As shown, the wind wheel 3 includes a middle disk 31, the side of the middle disk 31 rotates with the inner surface of the first side 11, and the output shaft of the motor 2 passes through the first side 11 and rotates with the inner wall of the first side 11, the end of the output shaft of the motor 2 is fixed to the side of the middle disk 31, and a blade 32 is fixedly installed on the side of the middle disk 31 away from the first side 11, and a plurality of blades 32 are provided, which are evenly spaced and distributed on the side of the middle disk 31, and the middle disk 31 is symmetrically arranged about the center line of the enclosure 13, one middle disk 31 rotates with the inner surface of the first side 11, and the other middle disk 31 rotates with the inner surface of the second side 12, and a rotating ring plate 33 is fixedly installed on the outer surface of the middle disk 31, and the outer edge surface of the rotating ring plate 33 rotates with the inner surfaces of the first side 11 and the second side 12 respectively, and the output shaft of the motor 2 drives the middle disk 31 and the blades 32 to rotate, so that air circulates in the casing 1;

[0036] An inclined guide plate 15 is fixedly installed on the inner side of the first side 11 and the second side 12. The inclined guide plate 15 is arranged above the bottom plate 14 and located on the outer side of the wind wheel 3. A rotating groove 16 is provided on the inner surface of the first side 11 and the second side 12. The outer edge surface of the rotating ring plate 33 rotates with the inner wall of the rotating groove 16. A through groove is provided on the outer edge surface of the second side 12. A mounting cover plate 17 is detachably installed on the inner wall of the through groove. The dust collecting wheel 5 includes a connecting plate 55. Two connecting plates 55 are provided. The motor 2 and the middle plate 31 cooperate to make the blades 32 rotate, guide the air flow, and make the air flow between the blades 32. The two connecting plates 55 are respectively connected to the first side 11 and The inner surface of the middle plate 31 on the second side 12 is in contact with the inner surface of the middle plate 31, and a limiting rod 54 is fixedly installed on the inner surface of the middle plate 31 close to the first side 11. The connecting plate 55 is detachably installed on the outer edge surface of the limiting rod 54. The end of the limiting rod 54 away from the middle plate 31 is plugged into the inner wall of the mounting cover 17. A shaft column 51 is fixedly installed in the middle of the inner surface of the connecting plate 55. A mounting groove 52 is opened on the outer edge surface of the shaft column 51, and a dust filter arc plate 53 is fixedly installed on the inner wall of the mounting groove 52. By opening the mounting groove 52 on the shaft column 51, the flow time of air in the mounting groove 52 is increased, so that the air contacts the dust filter arc plate 53, and cooperates with the dust filter arc plate 53 to absorb dust impurities in the air.

[0037] During operation, the output shaft of the motor 2 drives the middle disk 31 and the blades 32 to rotate, so that the air circulates in the casing 1, and the installation groove 52 on the shaft column 51 is opened to increase the flow time of the air in the installation groove 52, so that the air contacts the dust filter arc plate 53, and then the dust filter arc plate 53 is used to absorb dust and impurities in the air, thereby improving the cleanliness of the guided air to a certain extent.

[0038] The third embodiment is based on the first and second embodiments. Figures 3 to 6As shown, the drainage tongue plate member 41 includes a fixed arc plate 411, the two ends of the fixed arc plate 411 are respectively fixed to the inner surface of the first side 11 and the second side 12, and the bottom surface of the fixed arc plate 411 is fixed to the top of the bottom plate 14, and a flexible volute tongue sleeve 412 is fixedly connected to the outer edge surface of the fixed arc plate 411, and a drainage groove 413 is provided on the top of the flexible volute tongue sleeve 412, and a flow groove is provided at the bottom of the drainage groove 413, and a fixed rod 414 is fixedly installed on the inner edge surface of the flexible volute tongue sleeve 412 away from the fixed arc plate 411, and a rotating plate is provided on the side of the fixed rod 414 close to the fixed arc plate 411 415, the two ends of the rotating plate 415 rotate with the inner surface of the first side 11 and the second side 12, the outer edge surface of the rotating plate 415 is fixedly installed with a support plate 416, the outer edge surface of the support plate 416 is adapted to fit with the inner edge surface of the flexible volute tongue sleeve 412, the two ends of the support plate 416 rotate with the inner surface of the first side 11 and the second side 12, the outer edge surface of the fixed rod 414 is fixedly installed with an elastic bent plate 417, the end of the elastic bent plate 417 away from the fixed rod 414 is fixed to the outer edge surface of the rotating plate 415, and the fixed arc plate 411 and the flexible volute tongue sleeve 412 are fixed to the air The air is guided and dispersed in the guide groove 413. The air entering the flexible volute tongue sleeve 412 through the guide groove 413 flows back under the influence of the rotating plate 415 and interferes with each other, thereby reducing the flow rate of the air in the flexible volute tongue sleeve 412. The guide sound-absorbing panel 43 includes an inclined sound-absorbing panel 431. The two ends of the inclined sound-absorbing panel 431 are fixed to the inner surface of the first side 11 and the second side 12. One side of the inclined sound-absorbing panel 431 is fixed to the outer edge surface of the fixed arc plate 411. The bottom surface of the inclined sound-absorbing panel 431 is fixed to the top of the bottom plate 14. The inclined sound-absorbing panel 431 is a gathering The ester fiber sound-absorbing board, the top of the inclined sound-absorbing board 431 is provided with a flow-blocking groove 432, which cooperates with the inclined sound-absorbing board 431 and the flow-blocking groove 432 to smoothly transfer the air to the bottom plate 14 to avoid the formation of vortex. When the air velocity increases, the air entering the flexible volute tongue sleeve 412 is blown toward the rotating plate 415 and the supporting plate 416, so that the rotating plate 415 is deflected, and the flexible volute tongue sleeve 412 is pulled and deformed, so that the residual air of the diversion is quickly guided to the flow-blocking tongue plate 42, and the flow-blocking tongue plate 42 is used to block the air, and the relative angle between the flow-blocking tongue plate 42 and the drainage tongue plate 41 is adjusted to enhance the drainage effect;

[0039] The baffle tongue member 42 includes a shaft 421, the two ends of the shaft 421 rotate with the inner surface of the first side 11 and the second side 12, a baffle arc plate 422 is fixedly installed on the outer edge surface of the shaft 421, the two ends of the baffle arc plate 422 rotate with the inner surface of the first side 11 and the second side 12, the bottom end of the outer arc surface of the baffle arc plate 422 is fixedly connected with a connecting block 425, the connecting block 425 is symmetrically arranged about the center line of the shaft 421, the side surfaces of the two connecting blocks 425 slide with the inner surfaces of the first side 11 and the second side 12 respectively, and the connecting block 425 is fixedly connected with an elastic strip 423 on the outer edge surface away from the baffle arc plate 422, and the side surfaces of the two elastic strips 423 are respectively connected to the first side 11 and the second side The inner surface of the edge 12 slides, and the end of the elastic strip 423 away from the connecting block 425 is fixedly connected to the fixing block 424. The side surfaces of the two fixing blocks 424 are respectively fixed to the inner surfaces of the first side edge 11 and the second side edge 12. The diverted air is received by the baffle arc plate 422, and the arc setting of the baffle arc plate 422 is used to change the air flow path. The impact of the air on the baffle arc plate 422 is used to rotate the shaft 421, and the air is diverted to two directions through the baffle arc plate 422. The air in the two directions converges with the air guided by the inclined guide plate 15 and the air guided by the guide and sound-absorbing plate 43, respectively, and is affected by the flow effect of the air to form a stable air flow, thereby ensuring the air guiding efficiency of the cross-flow fan and improving the noise reduction performance of the volute tongue 4.

[0040] During operation, the air is guided by the fixed arc plate 411 and the flexible volute tongue sleeve 412, and the air is dispersed and flows at the guide groove 413. The air entering the flexible volute tongue sleeve 412 through the guide groove 413 flows back under the influence of the rotating plate 415 and the air interferes with each other, reducing the flow rate of the air in the flexible volute tongue sleeve 412. The inclined sound absorbing plate 431 and the flow blocking groove 432 are used to smoothly transfer the air to the bottom plate 14 to avoid the formation of vortex. When the air flow rate increases, the air entering the flexible volute tongue sleeve 412 is blown toward the rotating plate 415 and the supporting plate 416, causing the rotating plate 415 to deflect, so that the flexible volute tongue sleeve 412 is pulled The deflected air is deformed so that the residual air is quickly guided to the baffle tongue plate 42, and the baffle tongue plate 42 is used to block the air. The relative angle between the baffle tongue plate 42 and the guide tongue plate 41 is adjusted to enhance the guide effect. The deflected air is received by the baffle arc plate 422, and the air flow path is changed in coordination with the arc shape of the baffle arc plate 422. The impact of the air on the baffle arc plate 422 is used to rotate the shaft 421, and the air is diverted into two directions through the baffle arc plate 422. The air in the two directions converges with the air guided by the inclined guide plate 15 and the air guided by the guide and sound-absorbing plate 43, respectively, and is affected by the flow effect of the air to form a stable air flow.

[0041] The working principle of the cross-flow fan with an adjustable volute tongue device is described in detail below.

[0042] When in use, first start the motor 2, and drive the middle disk 31 and the output shaft of the motor 2 to rotate, so that the air can circulate in the casing 1, and use the installation groove 52 on the shaft column 51 to increase the flow time of the air in the installation groove 52, so that the air can contact with the dust filter arc plate 53, filter and adsorb the dust impurities in the air, and make the air circulate in the casing 1, and guide the air to circulate through the air duct formed by the casing 1, and then guide the air through the fixed arc plate 411 and the flexible volute tongue sleeve 412, and disperse the air at the drainage groove 413. The air entering the flexible volute tongue sleeve 412 through the drainage groove 413 flows back under the influence of the rotating plate 415 and interferes with each other, reducing the flow rate of the air in the flexible volute tongue sleeve 412, and cooperates with the inclined sound absorbing plate 431 and the flow blocking groove 432 to smoothly transfer the air to the bottom plate 14 to avoid the formation of vortex. When the air flow rate increases, it enters the flexible volute tongue sleeve 412 The internal air blows toward the rotating plate 415 and the supporting plate 416, causing the rotating plate 415 to deflect and the flexible volute tongue sleeve 412 to be pulled and deformed, so that the residual air of the diversion is quickly guided to the baffle tongue plate 42, and the baffle tongue plate 42 is used to block the air, and the relative angle between the baffle tongue plate 42 and the guide tongue plate 41 is adjusted to enhance the guide effect, and the diverted air is received by the baffle arc plate 422, and the air flow path is changed in accordance with the arc shape of the baffle arc plate 422, and the impact of the air on the baffle arc plate 422 is used to rotate the shaft 421, and the air is diverted to two directions through the baffle arc plate 422, and the air in the two directions converges with the air guided by the inclined guide plate 15 and the air guided by the guide and sound-absorbing plate 43 respectively, and is affected by the flow effect of the air to form a stable air flow, so that the air can smoothly flow to the inner wall of the casing 1, and the impact caused by the contact between the air and the inner wall of the casing 1 is reduced to circulate the air.

[0043] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A crossflow fan with an adjustable volute device, characterized in that: The invention comprises a casing (1), a motor (2) being mounted on one side of the casing (1), an output shaft of the motor (2) extending into the interior of the casing (1) and connected to a wind wheel (3), the wind wheel (3) being mounted inside the casing (1), a volute tongue (4) being mounted inside the casing (1), the volute tongue (4) being used to guide air flow and change the air flow path, the volute tongue (4) being arranged on one side of the wind wheel (3), and a dust collecting wheel (5) being mounted inside the wind wheel (3); The volute tongue (4) comprises a drainage tongue plate (41), two ends of the drainage tongue plate (41) are connected to the inner edge surface of the casing (1), a drainage sound absorption plate (43) is installed on the surface of the drainage tongue plate (41) on the side away from the wind wheel (3), and the drainage sound absorption plate (43) is connected to the bottom surface of the inner wall of the casing (1), a blocking tongue plate (42) is arranged on the side of the drainage tongue plate (41) away from the wind wheel (3), the blocking tongue plate (42) is connected to the inner edge surface of the casing (1), and the blocking tongue plate (42) is located obliquely above the drainage tongue plate (41) and the drainage sound absorption plate (43), and the casing (1) comprises a first side edge (11), and the side surface of the motor (2) is connected to the first side edge. The outer surface of the first side (11) is fixed, a bottom plate (14) is fixedly mounted on the inner bottom end of the first side (11), a second side (12) is fixedly mounted on a side surface of the bottom plate (14) away from the first side (11), and the second side (12) and the first side (11) are located on the same axis, a surrounding plate (13) is fixedly mounted on the outer edge surfaces of the first side (11) and the second side (12), a side surface of the bottom plate (14) is fixed to the bottom end of a side surface of the surrounding plate (13), and the drainage tongue plate member (41) includes a fixed arc plate (411), two ends of the fixed arc plate (411) are respectively fixed to the inner surface of the first side (11) and the second side (12), and the fixed arc plate (411) is fixedly mounted on the inner surface of the first side (11) and the second side (12). The bottom surface of the fixed arc plate (411) is fixed to the top of the bottom plate (14), a flexible volute tongue sleeve (412) is fixedly connected to the outer edge surface of the fixed arc plate (411), a drainage groove (413) is provided on the top of the flexible volute tongue sleeve (412), a flow groove is provided on the bottom of the drainage groove (413), a fixing rod (414) is fixedly installed on the inner edge surface of the flexible volute tongue sleeve (412) away from the fixed arc plate (411), a rotating plate (415) is provided on the side of the fixing rod (414) close to the fixed arc plate (411), the two ends of the rotating plate (415) rotate with the inner surface of the first side edge (11) and the second side edge (12), a supporting plate (416) is fixedly installed on the outer edge surface of the rotating plate (415), The outer edge surface of the support plate (416) is matched and fitted with the inner edge surface of the flexible volute tongue sleeve (412); the two ends of the support plate (416) are rotated with the inner side surfaces of the first side edge (11) and the second side edge (12); an elastic bent plate (417) is fixedly installed on the outer edge surface of the fixed rod (414); one end of the elastic bent plate (417) away from the fixed rod (414) is fixed to the outer edge surface of the rotating plate (415); the guide sound absorbing plate (43) includes an inclined sound absorbing plate (431); the two ends of the inclined sound absorbing plate (431) are fixed to the inner side surfaces of the first side edge (11) and the second side edge (12); one side of the inclined sound absorbing plate (431) is fixed to the outer edge surface of the fixed arc plate (411);The bottom surface of the inclined sound absorbing plate (431) is fixed to the top of the bottom plate (14); the inclined sound absorbing plate (431) is a polyester fiber sound absorbing plate; a flow blocking groove (432) is provided on the top of the inclined sound absorbing plate (431); the flow blocking tongue plate member (42) comprises a shaft (421); two ends of the shaft (421) rotate with the inner surfaces of the first side edge (11) and the second side edge (12); a flow blocking arc plate (422) is fixedly mounted on the outer edge surface of the shaft (421); two ends of the flow blocking arc plate (422) rotate with the inner surfaces of the first side edge (11) and the second side edge (12); a connecting block (425) is fixedly connected to the bottom end of the outer arc surface of the flow blocking arc plate (422); ), the connecting block (425) is symmetrically arranged about the center line of the shaft (421), the side surfaces of the two connecting blocks (425) slide respectively with the inner surface of the first side edge (11) and the second side edge (12), the outer edge surface of the connecting block (425) away from the flow blocking arc plate (422) is fixedly connected with an elastic strip (423), the side surfaces of the two elastic strips (423) slide respectively with the inner surface of the first side edge (11) and the second side edge (12), the end of the elastic strip (423) away from the connecting block (425) is fixedly connected with a fixed block (424), and the side surfaces of the two fixed blocks (424) are fixed respectively with the inner surface of the first side edge (11) and the second side edge (12). , 2. A crossflow fan with an adjustable volute device according to claim 1, characterized in that: The wind wheel (3) comprises a middle disk (31), the side surface of the middle disk (31) rotates with the inner surface of the first side edge (11), and the output shaft of the motor (2) passes through the first side edge (11) and rotates with the inner wall of the first side edge (11), the end of the output shaft of the motor (2) is fixed to the side surface of the middle disk (31), and blades (32) are fixedly mounted on the side of the middle disk (31) away from the first side edge (11), and a plurality of blades (32) are arranged and distributed at equal intervals on the side surface of the middle disk (31).

3. A crossflow fan with an adjustable volute device according to claim 2, characterized in that: The middle plate (31) is symmetrically arranged about the center line of the enclosure (13), one of the middle plates (31) rotates with the inner surface of the first side edge (11), and the other of the middle plates (31) rotates with the inner surface of the second side edge (12), and a swivel plate (33) is fixedly mounted on the outer surface of the middle plate (31), and the outer edge surface of the swivel plate (33) rotates with the inner surface of the first side edge (11) and the inner surface of the second side edge (12), respectively.

4. A crossflow fan with an adjustable volute device according to claim 3, characterized in that: An inclined guide plate (15) is fixedly mounted on the inner side of the first side edge (11) and the second side edge (12); the inclined guide plate (15) is arranged above the bottom plate (14) and located on the outer side of the wind wheel (3); a rotation groove (16) is provided on the inner surface of the first side edge (11) and the second side edge (12); the outer edge surface of the rotating ring plate (33) rotates with the inner wall of the rotation groove (16); a through groove is provided on the outer edge surface of the second side edge (12); and a mounting cover plate (17) is detachably mounted on the inner wall of the through groove.

5. A crossflow fan with an adjustable volute device according to claim 4, characterized in that: The dust collecting wheel (5) comprises a connecting plate (55), two connecting plates (55) are provided, the two connecting plates (55) are in contact with the inner surface of the middle plate (31) located on the first side edge (11) and the second side edge (12), respectively, a limiting rod (54) is fixedly mounted on the inner surface of the middle plate (31) close to the first side edge (11), the connecting plate (55) is detachably mounted on the outer edge surface of the limiting rod (54), and one end of the limiting rod (54) away from the middle plate (31) is plugged into the inner wall of the mounting cover plate (17).

6. A crossflow fan with an adjustable volute device according to claim 5, characterized in that: A shaft column (51) is fixedly mounted on the middle of the inner surface of the connecting plate (55), a mounting groove (52) is provided on the outer edge surface of the shaft column (51), and a dust filtering arc plate (53) is fixedly mounted on the inner wall of the mounting groove (52).

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