Fan butterfly door guide mechanism

Abstract

The utility model relates to butterfly fan technical field discloses a fan butterfly door guide vane mechanism, the mechanism includes: right side butterfly door, two counterweight guide vane, left side butterfly door, pivot, support ring, wherein, the pivot is fixedly connected with right side butterfly door and left side butterfly door, and the pivot is arranged on the support ring, and the support ring is arranged on the inner wall of the fan's wind collecting cylinder, and the windward surface of two counterweight guide vanes is respectively provided with right side butterfly door and left side butterfly door in the central symmetry mode. After the fan blade stops rotating, under the action of guide vane and tension spring tension, the butterfly door is closed, the support ring is designed with magnetic steel, the magnetic steel can be attracted to the butterfly door by magnetic force, in addition, because the counterweight is provided with the second hem, the overall weight is heavy, so that in windy weather, the butterfly door is closed more tightly under the condition that the inside and outside of the butterfly door have large pressure difference.

Description

Technical Field

[0001] This utility model relates to the field of butterfly fan technology, specifically a butterfly gate flow guiding mechanism for a fan. Background Technology

[0002] The butterfly fan is equipped with a butterfly door. Existing butterfly doors have the problem of "not being able to open or close tightly". When the two semi-circular butterfly doors on the fan butterfly door are aligned with each other, that is, when the left and right butterfly doors are at a 90-degree angle with the plane, the friction between the left and right butterfly doors and the exhaust direction is minimal. However, in the existing technology, due to the tension of the tension spring and the action of the guide plate, the left and right butterfly doors cannot open to the maximum angle, resulting in poor exhaust effect. In addition, in the case of strong winds outside, the pressure difference between the inside and outside of the butterfly door is large. The pressure caused by the pressure difference will offset the tension of the tension spring, which will lead to the butterfly door opening but not closing tightly, affecting the airtightness and heat preservation effect of the building.

[0003] Based on this, this utility model proposes a fan butterfly door flow guiding mechanism. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a fan butterfly door flow guiding mechanism.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A fan butterfly door flow guiding mechanism, the mechanism comprising: a right butterfly door 1, two counterweight flow guiding plates 2, a left butterfly door 3, a rotating shaft 4, and a support ring 5;

[0006] The rotating shaft 4 is fixedly connected to the right butterfly door 1 and the left butterfly door 3. The rotating shaft 4 is set on the support ring 5, which is set on the inner wall of the fan's air collection tube. The right butterfly door 1 and the left butterfly door 3 are respectively set on the windward side of the two counterweight guide plates 2 in a centrally symmetrical manner.

[0007] In one possible implementation, the counterweight guide plate 2 includes a first bent edge and a second bent edge, the second bent edge having a bending angle of 120 degrees relative to the first bent edge.

[0008] In one possible implementation, magnets are designed around the support ring to hold the butterfly door in place by magnetic force.

[0009] In one possible implementation, the width direction of the counterweight guide plate 2 is set perpendicular to the butterfly door.

[0010] Compared with the prior art, this utility model provides a fan butterfly door air guiding mechanism, which has the following beneficial effects:

[0011] 1. The windward side of the deflector is perpendicular to the butterfly door and is set in the area of ​​maximum fan speed to improve the opening effect of the butterfly door.

[0012] 2. The second bend of the windward side of the deflector has a 120° bend angle, which increases the windward area and significantly improves the opening effect without affecting the ventilation volume.

[0013] 3. By optimizing the layout and structure of the deflector, the butterfly door can be opened 90° under a negative pressure environment of -40Pa, significantly improving the opening effect; after the fan stops, the butterfly door can be closed under the weight of the deflector and the tension of the spring, significantly improving the airtightness of the fan. Attached Figure Description

[0014] Figure 1 This is an isometric view of the overall structure of this utility model;

[0015] Figure 2 This is a rear view of the butterfly door of this utility model in the closed state.

[0016] Figure 3 This is a front view of the butterfly door of this utility model in its closed state.

[0017] Figure 4 This is a schematic diagram of the counterweight guide plate 2 of this utility model.

[0018] The components include: 1. Right-side butterfly door; 2. Two counterweight guide vanes; 3. Left-side butterfly door; 4. Rotating shaft; 5. Support ring. Detailed Implementation

[0019] 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.

[0020] Example 1: Please refer to Figure 1 - Figure 4 ,

[0021] A butterfly door flow guiding mechanism for a fan, the mechanism comprising: a right butterfly door 1, two counterweight flow guiding plates 2, a left butterfly door 3, a rotating shaft 4, and a support ring 5;

[0022] The rotating shaft 4 is fixedly connected to the right butterfly door 1 and the left butterfly door 3. The rotating shaft 4 is set on the support ring 5, which is set on the inner wall of the fan's air collection tube. The right butterfly door 1 and the left butterfly door 3 are respectively set on the windward side of the two counterweight guide plates 2 in a centrally symmetrical manner.

[0023] In one possible implementation, the counterweight guide plate 2 includes a first bent edge and a second bent edge, the second bent edge having a bending angle of 120 degrees relative to the first bent edge.

[0024] In one possible implementation, magnets are designed around the support ring to hold the butterfly door in place by magnetic force.

[0025] In one possible implementation, the width direction of the counterweight guide plate 2 is set perpendicular to the butterfly door.

[0026] The counterweight guide vane is positioned on the windward side of the fan where the wind speed is highest (when the fan blades are viewed directly and rotated clockwise, the guide vane should be positioned as follows). Figure 2 The layout shown; when the fan blades are viewed from the front and rotated counterclockwise, the guide vane layout follows... Figure 2 The symmetrical layout shown has the air deflector's windward surface perpendicular to the butterfly door plane. The air deflector is equipped with a second bending edge, which increases the windward area and allows the butterfly door to open 90° even in a high negative pressure environment.

[0027] After the fan blades stop rotating, the butterfly door closes under the action of the guide plate and the tension of the spring. The support ring is designed with magnets around its perimeter, which can hold the butterfly door in place by magnetic force. In addition, due to the counterweight with a second folded edge, the overall weight is relatively heavy, which makes the butterfly door close more tightly in windy weather when there is a large pressure difference between the inside and outside of the butterfly door.

[0028] Optimize the angle, structure, and layout of the guide vanes to affect the opening and closing degree of the fan butterfly doors. Increase the force exerted by the guide vanes on the butterfly doors when they are open for exhaust, so that the butterfly doors can still "open" 90° under high negative pressure. Increase the airtightness of the butterfly doors when they are closed, so that the fan butterfly doors can be "closed tightly".

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A butterfly door flow guiding mechanism for a fan, characterized in that, The mechanism includes: a right butterfly door (1), two counterweight guide plates (2), a left butterfly door (3), a rotating shaft (4), and a support ring (5); The rotating shaft (4) is fixedly connected to the right butterfly door (1) and the left butterfly door (3). The rotating shaft (4) is set on the support ring (5). The support ring (5) is set on the inner wall of the wind-collecting duct of the fan. The right butterfly door (1) and the left butterfly door (3) are respectively set on the windward surface of the two counterweight guide plates (2) in a centrally symmetrical manner.

2. The fan butterfly door flow guiding mechanism according to claim 1, characterized in that, The counterweight guide plate (2) includes a first bent edge and a second bent edge, with the second bent edge having a bending angle of 120 degrees relative to the first bent edge.

3. The fan butterfly door flow guiding mechanism according to claim 1, characterized in that, The support ring is surrounded by magnets, which are used to hold the butterfly door in place by magnetic force.

4. The fan butterfly door flow guiding mechanism according to claim 1, characterized in that, The width direction of the counterweight guide plate (2) is set perpendicular to the butterfly door.

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