Novel axial flow fan

Abstract

The utility model discloses a novel axial flow fan which comprises a fan body and a carrying disc, the outer side of the carrying disc is fixedly connected with a plurality of carrying plates, a protective screen plate is fixedly connected between every two adjacent carrying plates, the end, away from the carrying disc, of each carrying plate is rotationally connected with a positioning shaft rod, and the four ends of the fan body are fixedly connected with limiting plates. A limiting plate is arranged on the carrying disc, one side of the limiting plate is fixedly connected with a matched locking plate, a transmission mechanism is arranged between the carrying disc and the carrying plate, the transmission mechanism is used for being matched with the positioning shaft rod and the matched locking plate to lock the carrying disc, and the transmission mechanism comprises a limiting seat, a displacement plate, a linkage plate A and a linkage through groove A. The axial flow fan relates to the technical field of axial flow fans. Through cooperation of the carrying disc, the carrying plate and the protective net plate, the fan blades of the fan body can be effectively protected, the fan blades are prevented from being damaged due to external collision, meanwhile, sundries can be prevented from being wound on the fan blades, and the application effect of the fan body is greatly guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a technical field of axial flow fan, concretely is a novel axial flow fan. BACKGROUND

[0002] Axial flow fan, it is the air current direction with the axle of the fan blade same direction a kind of fan, such as electric fan, air conditioner outdoor unit fan is axial flow mode operating fan, so called "axial flow type", because gas parallel to the fan shaft flow, axial flow type fan is usually used in the occasion of higher flow requirement and lower pressure requirement, axial flow type fan fixed position and make air move;

[0003] However, because the fan blade of axial flow fan is directly exposed, lacks effective protection measures, so that the fan blade is easily collided by external object in application process, and easily be attached and entangled by sundries.

[0004] Therefore, the utility model provides a novel axial flow fan to solve the above problems. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of prior art, the utility model provides a novel axial flow fan, solves the above problems.

[0006] To realize above-mentioned purpose, the utility model is realized through following technical scheme: a novel axial flow fan, including fan main body and mounting disc, the outer side of mounting disc is fixedly connected with a plurality of mounting plates, the adjacent two mounting plates are all fixedly connected with protective screen, the end, away from mounting disc, of mounting plate is rotatably connected with positioning shaft rod, the four ends of fan main body are all fixedly connected with limiting plate, the side of limiting plate is fixedly connected with matching lock plate, transmission mechanism is arranged between mounting disc and mounting plate, and the transmission mechanism is used for cooperating with positioning shaft rod and matching lock plate to lock mounting disc.

[0007] Preferably, the transmission mechanism includes limiting seat, displacement plate, linkage plate A and linkage channel A, the middle part of each mounting plate is fixedly connected with limiting seat, the middle part of limiting seat is slidably connected with displacement plate, one end of displacement plate is fixedly connected with linkage plate A, the middle part of linkage plate A is provided with linkage channel A, the top end of positioning shaft rod is fixedly connected with eccentric plate, and the end, away from positioning shaft rod, of eccentric plate is further movably connected in the inside of linkage channel A, the middle part of mounting disc is rotatably connected with linkage disc, and the outer side of linkage disc is fixedly connected with guide plate corresponding to displacement plate.

[0008] Preferably, the transmission mechanism further comprises linkage plate B, linkage channel B, push seat and transmission screw, one end of the displacement plate close to the guide plate is fixedly connected with linkage plate B, the middle part of linkage plate B is provided with linkage channel B, and the end of the guide plate away from the linkage disc is also movably connected in the corresponding linkage channel B, the top of one of the displacement plates is fixedly connected with a push seat, a transmission screw is threadedly connected on the limiting seat corresponding to the push seat, and one end of the transmission screw is also rotatably connected with the push seat, the outer side of each positioning shaft is fixedly connected with a locking frame, and the locking frame is clampedly connected with a locking plate.

[0009] Preferably, the middle part of the limiting plate is provided with a bushing, the middle part of the positioning shaft is fixedly connected with a limiting piece, and the bottom end of the limiting piece is fixedly connected with a noise reduction pad.

[0010] Preferably, the end of the eccentric plate away from the positioning shaft is fixedly connected with a linkage pin, and the eccentric plate is movably connected in the linkage channel A through the linkage pin.

[0011] Preferably, the middle part of the mounting disc is provided with an assembly hole, the linkage disc is rotatably connected in the assembly hole, and the connection part of the linkage disc and the assembly hole is further provided with a ball.

[0012] Preferably, the locking frame is in an arc-shaped structure, the middle part of the locking plate is provided with an arc-shaped hole matched with the locking frame, and the locking frame is clampedly connected in the arc-shaped hole.

[0013] Beneficial effects

[0014] The utility model provides a novel axial flow fan, compared with prior art has the following beneficial effects:

[0015] The novel axial flow fan can effectively protect the fan blade of the fan body through the cooperation of the mounting disc, the mounting plate and the protective mesh plate, avoid the damage of the fan blade caused by external collision, and avoid the wrapping of sundries on the fan blade, thereby greatly ensuring the application effect of the fan body.

[0016] The novel axial flow fan can quickly position the mounting disc from multiple directions through the cooperation of the transmission mechanism and the locking plate, thereby greatly improving the positioning efficiency of the mounting disc and making the whole more convenient. ACCURATE DRAWING

[0017] Figure 1 It is the whole schematic diagram of the utility model;

[0018] Figure 2 It is the separation structure schematic diagram of the fan body and the mounting disc of the utility model;

[0019] Figure 3is a schematic view of the transmission mechanism of the utility model;

[0020] Figure 4 is a linkage schematic view of linkage plate A and linkage channel A of the utility model;

[0021] Figure 5 is a separation structure schematic view of the positioning shaft and the limiting plate.

[0022] In the drawing, 1, fan main body;2, loading disc;3, loading plate;4, protective net plate;5, positioning shaft;6, limiting plate;7, matching lock plate;8, transmission mechanism;9, limiting seat;10, displacement plate;11, linkage plate A;12, linkage channel A;13, eccentric plate;14, linkage disc;15, guide plate;16, linkage plate B;17, linkage channel B;18, push seat;19, transmission screw;20, locking frame. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Embodiment one:

[0025] Please refer to Figures 1-5 A novel axial flow fan, including fan main body 1 and loading disc 2, the outer side of loading disc 2 is fixedly connected with multiple loading plates 3, adjacent two loading plates 3 are fixedly connected with protective net plates 4 between, the end away from loading disc 2 of loading plate 3 is rotatably connected with positioning shaft 5, the four ends of fan main body 1 are fixedly connected with limiting plates 6, one side of limiting plate 6 is fixedly connected with matching lock plate 7, transmission mechanism 8 is arranged between loading disc 2 and loading plate 3, and transmission mechanism 8 is used for cooperating positioning shaft 5 and matching lock plate 7 to lock loading disc 2.

[0026] In the embodiment, the middle part of limiting plate 6 is provided with a bushing, the middle part of positioning shaft 5 is fixedly connected with a limiting sheet, and the bottom end of limiting sheet is fixedly connected with a noise reduction pad. By the setting of the bushing, before positioning loading disc 2, first, positioning shaft 5 is inserted in the bushing, which can form the initial loading of loading disc 2, and cooperating with the setting of limiting sheet, the stroke of limiting plate 6 inserted in the bushing can be limited.

[0027] In the embodiment, the fan body 1 is mainly composed of impeller, casing, motor and other components. When the impeller rotates, the gas enters the impeller from the air inlet in the axial direction, and then the energy is increased by the pushing of the blades on the impeller, and then flows into the guide vane. The guide vane changes the deflected gas flow direction to axial flow, and at the same time guides the gas into the diffuser pipe, further converts the kinetic energy of the gas into pressure energy, and finally introduces the working pipeline. It is a mature prior art and will not be described here;

[0028] In the embodiment, the fan body 1 also integrates a PCBA board, and the PCBA board integrates:

[0029] The PWM controller can design a PWM signal generation circuit, which is connected to the driving circuit through the PWM output pin of the MCU. The duty cycle is adjusted to (30%-80%). The higher the duty cycle, the greater the average voltage of the fan body 1, and the faster the speed, and vice versa. In this way, the power and speed of the fan body 1 can be effectively controlled.

[0030] Embodiment two:

[0031] Please refer to Figures 1-5 , the embodiment provides a technical scheme based on embodiment one: the transmission mechanism 8 includes a limiting seat 9, a displacement plate 10, a linkage plate A 11 and a linkage slot A 12. The middle part of each mounting plate 3 is fixedly connected with the limiting seat 9. The middle part of the limiting seat 9 is slidably connected with the displacement plate 10. One end of the displacement plate 10 is fixedly connected with the linkage plate A 11. The middle part of the linkage plate A 11 is provided with the linkage slot A 12. The top end of the positioning shaft 5 is fixedly connected with the eccentric plate 13. The end of the eccentric plate 13 away from the positioning shaft 5 is also movably connected in the inside of the linkage slot A 12. The middle part of the mounting disc 2 is rotatably connected with the linkage disc 14. The outer side of the linkage disc 14 is fixedly connected with the guide plate 15 corresponding to the displacement plate 10.

[0032] In the embodiment, the end of the eccentric plate 13 away from the positioning shaft 5 is fixedly connected with the linkage pin, and the eccentric plate 13 is movably connected in the inside of the linkage slot A 12 through the linkage pin. Through the setting of the linkage pin, the eccentric plate 13 can stably rotate with the linkage plate A 11.

[0033] In the embodiment, the middle part of the mounting disc 2 is provided with an assembly hole, and the linkage disc 14 is rotatably connected in the assembly hole. A ball is further arranged at the connection between the linkage disc 14 and the assembly hole. Through the arrangement of the ball, the friction of the linkage disc 14 can be greatly reduced, so that the linkage disc 14 rotates more smoothly.

[0034] The transmission mechanism 8 further comprises a linkage plate B16, a linkage through slot B17, a pushing seat 18 and a transmission screw 19. The linkage plate B16 is fixedly connected to one end of the displacement plate 10 close to the guide plate 15, and the middle part of the linkage plate B16 is provided with the linkage through slot B17. One end of the guide plate 15 away from the linkage disc 14 is further movably connected inside the corresponding linkage through slot B17. The top end of one of the displacement plates 10 is fixedly connected with the pushing seat 18. The transmission screw 19 is threadedly connected to the limiting seat 9 corresponding to the pushing seat 18, and one end of the transmission screw 19 is further rotatably connected with the pushing seat 18. The outer side of each positioning shaft 5 is fixedly connected with a locking frame 20, and the locking frame 20 is clampedly connected with the locking plate 7.

[0035] In the embodiment, the locking frame 20 is in an arc-shaped structure, and the middle part of the locking plate 7 is provided with an arc-shaped hole corresponding to the locking frame 20. The locking frame 20 is clampedly connected inside the arc-shaped hole. Through the structural characteristics of the locking frame 20, in the process of the positioning shaft 5 driving the locking frame 20 to rotate, the locking frame 20 can be clamped into the arc-shaped hole, so as to form the locking of the position of the positioning shaft 5.

[0036] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by those skilled in the art.

[0037] Working principle: through the setting of the protective net plate 4, the effective protection of the fan body 1 blades can be realized without affecting the operation of the fan body 1, and external objects can be blocked to avoid external impact on the blades, and sheet or flocculent objects can be prevented from winding on the blades.

[0038] When the protective net plate 4 needs to be cleaned, first, the transmission screw 19 is rotated. Under the connection of the transmission screw 19 and one of the limiting seats 9, the transmission screw 19 can drive one of the displacement plates 10 to displace by means of the pushing seat 18. Since the eccentric plate 13 is further movably connected inside the linkage through slot A12, when the displacement plate 10 displaces, the eccentric plate 13 can be pulled by the linkage plate A11. Since the eccentric plate 13 is supported by the positioning shaft 5, the positioning shaft 5 can be driven to rotate.

[0039] Since the guide plate 15 is further movably connected inside the linkage through slot B17, when one of the displacement plates 10 displaces, the linkage through slot B17 can be pushed by the linkage plate B16, so as to drive the guide plate 15 to rotate under the support of the linkage disc 14, and pull the remaining displacement plates 10 by the remaining guide plates 15, so as to drive the plurality of positioning shafts 5 to rotate at the same time. When the locking frame 20 is separated from the locking plate 7, the mounting disc 2 can be unlocked. Then, the mounting disc 2 is removed from above the fan body 1, and the protective net plate 4 can be cleaned.

[0040] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0041] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A new type of axial flow fan, characterized by: Including fan main body (1) and the carrying disc (2), the outer side of the carrying disc (2) is fixedly connected with multiple carrying plates (3), the adjacent two carrying plates (3) are all fixedly connected with the protective net board (4), the one end of the carrying plate (3) away from the carrying disc (2) is rotatably connected with the positioning shaft rod (5), the four ends of the fan main body (1) are all fixedly connected with the limiting plate (6), one side of the limiting plate (6) is fixedly connected with the matching lock plate (7), the transmission mechanism (8) is arranged between the carrying disc (2) and the carrying plate (3), and the transmission mechanism (8) is used for cooperating with the positioning shaft rod (5) and the matching lock plate (7) to lock the carrying disc (2).

2. A new type of axial flow fan according to claim 1, characterized in that: The transmission mechanism (8) includes a limiting seat (9), a displacement plate (10), a linkage plate A (11) and a linkage channel A (12), the middle part of each carrying plate (3) is fixedly connected with a limiting seat (9), the middle part of the limiting seat (9) is slidably connected with a displacement plate (10), one end of the displacement plate (10) is fixedly connected with a linkage plate A (11), the middle part of the linkage plate A (11) is provided with a linkage channel A (12), the top end of the positioning shaft rod (5) is fixedly connected with an eccentric plate (13), and the one end of the eccentric plate (13) away from the positioning shaft rod (5) is also movably connected in the linkage channel A (12), the middle part of the carrying disc (2) is rotatably connected with a linkage disc (14), and the outer side of the linkage disc (14) is fixedly connected with a guide plate (15) corresponding to the displacement plate (10).

3. A new type of axial flow fan according to claim 2, characterized in that: The transmission mechanism (8) further includes a linkage plate B (16), a linkage channel B (17), a pushing seat (18) and a transmission screw (19), one end of the displacement plate (10) close to the guide plate (15) is fixedly connected with a linkage plate B (16), the middle part of the linkage plate B (16) is provided with a linkage channel B (17), and the one end of the guide plate (15) away from the linkage disc (14) is also movably connected in the corresponding linkage channel B (17), the top end of one of the displacement plates (10) is fixedly connected with a pushing seat (18), the limiting seat (9) corresponding to the pushing seat (18) is threadedly connected with a transmission screw (19), and one end of the transmission screw (19) is also rotatably connected with the pushing seat (18), the outer side of each positioning shaft rod (5) is fixedly connected with a locking frame (20), and the locking frame (20) is connected with the matching lock plate (7) in a clamped manner.

4. A new type of axial flow fan according to claim 1, characterized in that: The middle part of the limiting plate (6) is provided with a bushing, the middle part of the positioning shaft rod (5) is fixedly connected with a limiting sheet, and the bottom end of the limiting sheet is fixedly connected with a noise reduction pad.

5. A new type of axial flow fan according to claim 2, characterized in that: The one end of the eccentric plate (13) away from the positioning shaft rod (5) is fixedly connected with a linkage pin, and the eccentric plate (13) is movably connected in the linkage channel A (12) through the linkage pin.

6. A new type of axial flow fan according to claim 2, characterized in that: The middle part of the carrying disc (2) is provided with an assembly hole, the linkage disc (14) is rotatably connected in the assembly hole, and the connection between the linkage disc (14) and the assembly hole is further provided with a ball.

7. A new type of axial flow fan according to claim 3, characterized in that: The locking frame (20) is an arc structure, the middle part of the matching plate (7) is provided with an arc hole which is matched with the locking frame (20), and the locking frame (20) is connected in the arc hole through clamping.

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