Centrifugal fan with reinforced frame

Abstract

The utility model relates to the technical field of fan structures, in particular to a centrifugal fan with a reinforced frame, which comprises a central disc rack, a plurality of arc-shaped fan blades, a central cylinder and an outer frame, the central cylinder is detachably connected with the central disc rack, the plurality of arc-shaped fan blades are fixedly connected with the central disc rack, the outer frame is fixedly connected with the plurality of arc-shaped fan blades, the central disc rack is provided with two transverse cutting grooves, and the outer frame is fixedly connected with the arc-shaped fan blades. The center cylinder is used for being matched with a motor shaft for fixing, a centrifugal fan structure composed of the middle disc frame, the arc-shaped fan blades and the outer frame is displaced on the inner sides of the arc-shaped fan blades at the maximum strain under the high rotating speed condition, the arc-shaped fan blades are evenly distributed and can efficiently suck air, and the outer frame can protect the integrity of the arc-shaped fan blades in the carrying and transferring process. The overall weight of the component is reduced through the transverse cutting grooves, the strength and stability of the structure are kept except for unnecessary materials, the quality of the fan is protected in the mode, and then normal work of the whole machine equipment is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of fan structures, in particular to a centrifugal fan with a reinforced frame. Background Art

[0002] The current centrifugal fan is a fan device that uses centrifugal force to draw gas from the inlet, accelerates it through rotating blades, and then discharges it. Its working principle is based on the generation of centrifugal force, and the gas is pushed to the output port through rotating blades. The design purpose of the centrifugal fan is to provide efficient air flow and pressure gain, and it is suitable for a variety of gas transportation and processing scenarios.

[0003] Traditional centrifugal fans are easily hit during transportation and turnover, which affects the quality of the fan and thus the entire equipment. Utility Model Content

[0004] The purpose of the utility model is to provide a centrifugal fan with a reinforced frame, aiming to solve the problem that traditional centrifugal fans are easily hit during transportation and turnover, which affects the quality of the fan and thus affects the entire device.

[0005] To achieve the above-mentioned purpose, the utility model provides a centrifugal fan with a reinforced frame, including a middle disk frame, a plurality of curved fan blades, a center tube and an outer frame, the center tube is detachably connected to the middle disk frame and is located on the inner side wall of the middle disk frame, the plurality of curved fan blades are fixedly connected to the middle disk frame and are evenly distributed above the middle disk frame, the outer frame is fixedly connected to the plurality of curved fan blades and is located above the plurality of curved fan blades, and the middle disk frame has two transverse grooves.

[0006] The centrifugal fan with a reinforced frame further includes a plurality of connecting ribs, and the plurality of connecting ribs are all fixedly connected to the middle disk frame and are located below the middle disk frame.

[0007] Wherein, the middle plate frame has a first arc chamfer.

[0008] Wherein, the arc-shaped fan blades and the middle disk frame respectively have a second arc chamfer.

[0009] Wherein, the outer frame has a plurality of arc-shaped grooves.

[0010] The utility model provides a centrifugal fan with a reinforced frame, wherein the central tube is used to be fixed with the motor shaft, and the centrifugal fan structure composed of the middle disk frame, the plurality of the curved fan blades and the outer frame has a maximum strain displacement on the inner side of the curved fan blades under high speed conditions, and the plurality of the curved fan blades are evenly distributed and can efficiently inhale gas, and the outer frame can protect the integrity of the curved fan blades during transportation and turnover, and the transverse grooves reduce the overall weight of the components, while eliminating unnecessary materials and maintaining the strength and stability of the structure, thereby protecting the quality of the fan and ensuring the normal operation of the entire equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0012] Figure 1 It is a structural schematic diagram of the centrifugal fan with a reinforced frame of the present invention.

[0013] Figure 2 This utility model Figure 1 A magnified view of the local structure at point A.

[0014] Figure 3 This is a front view of the centrifugal fan with a reinforced frame according to the present invention.

[0015] Figure 4 This utility model Figure 3 BB line cross-sectional view.

[0016] Figure 5 It is a bottom view of the centrifugal fan with a reinforced frame of the present invention.

[0017] 101-middle plate frame, 102-arc-shaped fan blades, 103-center tube, 104-outer frame, 105-connecting ribs, 106-first arc chamfer, 107-second arc chamfer, 108-arc-shaped groove, 109-transverse groove. DETAILED DESCRIPTION

[0018] See also Figures 1 to 5 ,in, Figure 1 This is a structural diagram of a centrifugal fan with a reinforced frame according to the present invention. Figure 2 This utility model Figure 1 A magnified view of the local structure at point A, Figure 3 This is a front view of the centrifugal fan with enhanced frame of the utility model. Figure 4 This utility model Figure 3 BB line cross-sectional view, Figure 5 It is a bottom view of the centrifugal fan with a reinforced frame of the present invention.

[0019] The present invention provides a centrifugal fan with a reinforced frame, comprising a middle frame 101, a plurality of arc-shaped fan blades 102, a central tube 103, an outer frame 104 and a plurality of connecting ribs 105, wherein the middle frame 101 has a first arc chamfer 106, the arc-shaped fan blades 102 and the middle frame 101 respectively have a second arc chamfer 107, the outer frame 104 has a plurality of arc grooves 108, and the middle frame 101 has two transverse grooves 109.

[0020] The central tube 103 is detachably connected to the middle plate frame 101 and is located on the inner wall of the middle plate frame 101. The plurality of arc-shaped fan blades 102 are fixedly connected to the middle plate frame 101 and are evenly distributed above the middle plate frame 101. The outer frame 104 is fixedly connected to the plurality of arc-shaped fan blades 102 and is located above the plurality of arc-shaped fan blades 102. The middle plate frame 101 has two transverse grooves 109.

[0021] In this embodiment, the central tube 103 is used to cooperate with the motor shaft for fixation. The centrifugal fan structure composed of the middle disk frame 101, the multiple curved fan blades 102 and the outer frame 104 has the maximum strain displacement on the inner side of the curved fan blades 102 under high speed conditions, and the multiple curved fan blades 102 are evenly distributed and can efficiently inhale gas. The outer frame 104 can protect the integrity of the curved fan blades 102 during transportation and turnover. The transverse grooves 109 reduce the overall weight of the components, eliminate unnecessary materials while maintaining the strength and stability of the structure. In this way, the quality of the fan is protected, thereby ensuring the normal operation of the entire equipment.

[0022] Furthermore, the plurality of connecting ribs 105 are fixedly connected to the middle plate frame 101 and are located below the middle plate frame 101 .

[0023] In this embodiment, the connecting ribs 105 can improve the connectivity of the middle plate frame 101 and improve the stability of the middle plate frame 101 during high-speed operation.

[0024] Furthermore, the middle plate frame 101 has a first arc chamfer 106 .

[0025] In this embodiment, the first arc chamfer 106 is used to improve the flatness of the surface of the middle disk frame 101, so as to efficiently absorb gas, reduce stress concentration, prevent cracks, and improve product reliability and service life.

[0026] Furthermore, the arc-shaped fan blades 102 and the middle disk frame 101 respectively have a second arc chamfer 107.

[0027] In this embodiment, the second arc chamfer 107 is used to improve the strength and rigidity of the arc-shaped fan blade 102 and the middle disk frame 101. The middle disk frame 101 and the arc-shaped fan blade 102 running at high speed can better absorb gas and improve the efficiency of gas transportation.

[0028] It can ensure that the gas uses centrifugal force to remove the sharp parts of the edges and corners and improve the parts.

[0029] Furthermore, the outer frame 104 has a plurality of arc-shaped grooves 108 .

[0030] In this embodiment, the plurality of arc-shaped grooves 108 can disperse stress during an impact, thereby preventing stress concentration from causing deformation of the outer frame 104 .

[0031] The above disclosure is only a preferred embodiment of the present application and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present application are still within the scope covered by the present application.

Claims

1. A centrifugal fan with a reinforced frame, characterized in that: It includes a middle plate frame, multiple curved fan blades, a center tube and an outer frame. The center tube is detachably connected to the middle plate frame and is located on the inner wall of the middle plate frame. The multiple curved fan blades are fixedly connected to the middle plate frame and are evenly distributed above the middle plate frame. The outer frame is fixedly connected to the multiple curved fan blades and is located above the multiple curved fan blades. The middle plate frame has two transverse grooves.

2. The centrifugal fan with a reinforced frame according to claim 1, wherein: The centrifugal fan with a reinforced frame further includes a plurality of connecting ribs, and the plurality of connecting ribs are all fixedly connected to the middle disk frame and are located below the middle disk frame.

3. The centrifugal fan with a reinforced frame according to claim 2, wherein: The middle plate frame has a first arc chamfer.

4. The centrifugal fan with a reinforced frame according to claim 3, wherein: The arc-shaped fan blades and the middle disk frame respectively have a second arc chamfer.

5. The centrifugal fan with a reinforced frame according to claim 4, wherein: The outer frame has a plurality of arc-shaped grooves.

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