A contactless driven centrifugal fan

Abstract

The utility model relates to centrifugal fan technical field especially a kind of centrifugal fan of contactless drive, including cabinet shell and internal fan, the internal fan includes fan blade, rotating shaft and magnetic suspension motor, cabinet shell both sides are equipped with quick-release door, the quick-release door is set as flip cover, the quick-release door is set in cabinet shell both sides by rotating hinge, cabinet shell inside is equipped with vertical support plate;The vertical support plate bottom is equipped with sliding block;The cabinet shell bottom is equipped with mounting plate, the mounting plate top surface is equipped with sliding slot, the sliding block is slidably arranged in sliding slot, the vertical support plate center is equipped with mounting hole, the internal fan is installed on vertical support plate by mounting hole, the rotating shaft is rotatably arranged in mounting hole, the fan blade is fixedly arranged at the front end of rotating shaft, the rotating shaft tail end is connected with magnetic suspension motor, without the whole dismounting external cabinet shell, it is convenient to maintain internal fan at any time.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal fan technology, and in particular to a contactless driven centrifugal fan. Background Technology

[0002] Centrifugal fans are machines that rely on input mechanical energy to increase gas pressure and transport gas. They are widely used in factories, mines, tunnels, cooling towers, vehicles, ships and buildings for ventilation, dust removal and cooling; ventilation and induced draft in boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; grain drying and conveying, etc. In recent years, in order to reduce the mechanical wear of the fan shaft, magnetic levitation motors are often used to drive the shaft to achieve contactless drive and reduce mechanical wear.

[0003] Non-contact centrifugal fans are typically installed inside the fan housing to reduce interference from external magnetic fields. However, existing fan housings only have access doors on one side, requiring the entire housing to be disassembled for maintenance of components on the back side, which is time-consuming and labor-intensive. The single-side access door creates a blind spot for maintenance, increasing downtime and labor costs. Utility Model Content

[0004] The purpose of this application is to provide a contactless driven centrifugal fan, which aims to solve the problems in the prior art.

[0005] This application provides a contactless driven centrifugal fan, including a casing and an internal fan. The internal fan includes fan blades, a rotating shaft, and a magnetic levitation motor. The casing has quick-release doors on both sides, which are flip-tops. These doors are hinged to the sides of the casing. A vertical support plate is located inside the casing. A sliding block is located at the bottom of the vertical support plate. A mounting plate is located at the bottom of the casing, with a sliding groove on its top surface. The sliding block is slidably disposed in the sliding groove. A mounting hole is located at the center of the vertical support plate. The internal fan is mounted on the vertical support plate through the mounting hole. The rotating shaft is rotatably disposed within the mounting hole. The fan blades are fixedly disposed at the front end of the rotating shaft, and the rear end of the rotating shaft is connected to the magnetic levitation motor. A fixing clamp is located on the back of the vertical support plate, comprising an adjusting rod and two arc-shaped clamping pieces. The adjusting rod is located below the mounting hole.

[0006] Furthermore, a connecting buckle is provided at the bottom of the inner side of the quick-release door, and connecting slots are provided on both sides of the mounting plate.

[0007] Furthermore, the adjusting rod is provided with an adjustable damping shaft and a torsion spring inside, and an adjusting sleeve is sleeved on the outside of the adjusting rod. The two arc-shaped clips are respectively fixedly connected to the adjusting sleeve.

[0008] Furthermore, the top of the vertical support plate is provided with a first positioning hole, and the top of the chassis shell is provided with a second positioning hole at the corresponding position.

[0009] Furthermore, a detachable positioning bolt is provided between the first positioning hole and the second positioning hole.

[0010] The beneficial effects of this utility model are: both sides of the utility model are equipped with inspection doors, which cooperate with the sliding support plate to eliminate the blind spots for internal maintenance of the casing, making it convenient for maintenance personnel to carry out maintenance, reducing downtime, eliminating the need to completely disassemble the external casing, and the quick-release doors on both sides are connected by buckles and slots, making it convenient to maintain the internal fan at any time. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the external structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the structure of this utility model.

[0013] Figure 3 This is a schematic diagram of the vertical support plate structure.

[0014] In the picture:

[0015] 1. Chassis shell; 2. Quick-release door; 21. Connecting buckle; 3. Mounting plate; 31. Connecting slot; 32. Sliding groove; 4. Internal fan; 41. Rotating shaft; 42. Fan blade; 43. Magnetic levitation motor; 5. Vertical support plate; 51. First positioning hole; 52. Sliding block; 53. Mounting hole; 6. Fixed gripper; 61. Adjusting rod; 62. Arc-shaped clamp; 63. Locking knob; 7. Positioning bolt. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figures 1 to 3The centrifugal fan shown includes a casing 1 and an internal fan 4. The internal fan 4 includes fan blades 42, a rotating shaft 41, and a magnetic levitation motor 43. The casing 1 has quick-release doors 2 on both sides, which are flip-tops and are hinged to the sides of the casing 1. The casing 1 has a vertical support plate 5 inside; the bottom of the vertical support plate 5 has a sliding block 52; the bottom of the casing 1 has a mounting plate 3, and the top surface of the mounting plate 3 has a sliding groove 32. Block 52 is slidably disposed in sliding groove 32. The vertical support plate 5 has a mounting hole 53 at its center. The internal fan 4 is mounted on the vertical support plate 5 through the mounting hole 53. The rotating shaft 41 is rotatably disposed in the mounting hole 53. The fan blade 42 is fixedly disposed at the front end of the rotating shaft 41. The tail end of the rotating shaft 41 is connected to the magnetic levitation motor 43. The back of the vertical support plate 5 is provided with a fixing clamp 6. The fixing clamp 6 includes an adjusting rod 61 and two arc-shaped clamping pieces 62. The adjusting rod 61 is located below the mounting hole 53.

[0018] When the internal fan 4 needs maintenance, remove the top positioning bolt 7, manually push the vertical support plate 5, slide the vertical support plate 5 forward or backward, and push the fan blade 42 or magnetic levitation motor 43 out of the casing 1 for maintenance. The casing 1 is equipped with quick-release access doors on both sides, which cooperate with the sliding support plate 5 to eliminate blind spots in the internal maintenance of the casing 1, making it convenient for maintenance personnel to carry out maintenance, reducing downtime, and eliminating the need to completely disassemble the external casing. The quick-release doors on both sides are connected by buckles and slots, making it convenient to maintain the internal fan at any time.

[0019] The quick-release door 2 has a connecting buckle 21 at the bottom of its inner side. The connecting buckle 21 can be a columnar body. The mounting plate 3 has connecting slots 31 on both sides. The inner door 2 on the front side has ventilation holes, and a protective cover can be installed in the ventilation holes.

[0020] The adjusting rod 61 is equipped with an adjustable damping shaft and a torsion spring inside. An adjusting sleeve is sleeved on the outside of the adjusting rod 61. Two arc-shaped clamping pieces 62 are fixedly connected to the adjusting sleeve. The end of the adjusting rod 61 is equipped with a locking knob 63, which can adjust the resistance of the damping shaft and fix the clamping angle of the arc-shaped clamping pieces 62. The arc-shaped clamping pieces are used to clamp and fix the magnetic levitation motor 43.

[0021] The top of the vertical support plate 5 is provided with a first positioning hole 51, and the top of the chassis shell 1 is provided with a second positioning hole at the corresponding position.

[0022] A detachable positioning bolt 7 is provided between the first positioning hole 51 and the second positioning hole. The positioning bolt 7 is inserted into the first positioning hole 51 and the second positioning hole to fix the position of the support plate 5. The top of the support plate 5 slides in contact with the inner wall of the housing 1.

[0023] The above embodiments are not intended to limit the present invention. Unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. The present invention is not limited to the examples above. Changes, modifications, additions, or substitutions made by those skilled in the art within the scope of the technical solution of the present invention are also within the protection scope of the present invention. Furthermore, the technical features involved in the different embodiments of the present application described above can be combined with each other as long as they do not conflict with each other.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A contactless driven centrifugal fan, characterized in that, The device includes a chassis and an internal fan. The internal fan comprises fan blades, a rotating shaft, and a magnetic levitation motor. The chassis has quick-release doors on both sides, which are flip-tops. These doors are hinged to the sides of the chassis. A vertical support plate is located inside the chassis. A sliding block is located at the bottom of the vertical support plate. A mounting plate is located at the bottom of the chassis, with a sliding groove on its top surface. The sliding block is slidably positioned within the sliding groove. A mounting hole is located at the center of the vertical support plate. The internal fan is mounted on the vertical support plate through this mounting hole. The rotating shaft is rotatably positioned within the mounting hole. The fan blades are fixedly mounted at the front end of the rotating shaft, and the rear end of the rotating shaft is connected to the magnetic levitation motor. A fixing clamp is located on the back of the vertical support plate, comprising an adjusting rod and two arc-shaped clamping pieces. The adjusting rod is located below the mounting hole.

2. The contactless driven centrifugal fan according to claim 1, characterized in that, The bottom of the inner side of the quick-release door is provided with a connecting buckle, and the two sides of the mounting plate are provided with connecting slots.

3. The contactless driven centrifugal fan according to claim 1, characterized in that, The adjusting rod is equipped with an adjustable damping shaft and a torsion spring inside. An adjusting sleeve is sleeved on the outside of the adjusting rod, and the two arc-shaped clips are respectively fixedly connected to the adjusting sleeve.

4. The contactless driven centrifugal fan according to claim 1, characterized in that, The top of the vertical support plate is provided with a first positioning hole, and the top of the chassis shell is provided with a second positioning hole at the corresponding position.

5. The contactless driven centrifugal fan according to claim 4, characterized in that, A detachable positioning bolt is provided between the first positioning hole and the second positioning hole.

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