Axial flow fan and flow guide device

Abstract

The utility model relates to the technical field of axial flow fans, in particular to an axial flow fan and a flow guide device. The utility model provides an axial flow fan. The axial flow fan comprises a machine brake, a flow pressing mechanism and a flow guiding device. An air inlet is formed in one end of the machine brake, an air outlet is formed in the other end of the machine brake, and the flow pressing mechanism and the flow guiding device are sequentially installed in the machine brake along the axis of the machine brake; the pressure flow mechanism is close to the air inlet, and the pressure flow mechanism is used for sucking external air into the machine gate; the flow guiding device is used for adjusting the flow speed of gas in the machine gate and comprises a conical sleeve, and the conical sleeve is installed in the machine gate. As the caliber of the conical sleeve is narrowed from wide to narrow to form a trumpet shape from the air inlet to the air outlet of the mechanical brake, the flow rate of gas flowing through the conical sleeve can be increased, axial airflow in the mechanical brake can be quickly exhausted, and the effect of increasing the gas displacement is achieved.

Description

Technical Field

[0001] This utility model relates to the field of axial flow fan technology, specifically to an axial flow fan and a flow guiding device. Background Technology

[0002] Axial flow fans are devices that generate airflow by pushing a large volume of air. They are widely used in many fields, such as ventilation, air conditioning systems, industrial production, and cooling equipment. They can quickly and effectively expel hot air, circulate and regulate indoor and outdoor air, and maintain suitable temperature and humidity.

[0003] An axial flow fan typically consists of a rotating impeller and a stationary casing. As the impeller rotates, air is drawn into the fan and propelled axially along the impeller's axis. The impeller is designed with angled blades to generate a powerful airflow during rotation. Simultaneously, the fan casing guides the airflow, directing it along the axial direction.

[0004] Existing axial flow fans rely on the fan casing to guide airflow, but they cannot regulate the airflow velocity entering the fan, resulting in low exhaust volume and mediocre working efficiency. Utility Model Content

[0005] (I) The problem to be solved by this utility model is that the existing axial flow fan relies on the fan casing to guide the airflow, and it cannot adjust the airflow velocity entering the fan, resulting in a small exhaust volume and average working efficiency.

[0006] (II) Technical Solution

[0007] An axial flow fan includes a damper, a flow compression mechanism, and a flow guiding device;

[0008] One end of the gate forms an air inlet, and the other end forms an air outlet. The pressure mechanism and the flow guiding device are installed sequentially inside the gate along its axis.

[0009] The pressure-reducing mechanism is located near the air inlet and is used to draw external air into the gate.

[0010] The flow guiding device is used to regulate the gas flow rate inside the gate. The flow guiding device includes a conical sleeve, which is installed inside the gate and is coaxially arranged with the gate.

[0011] The conical sleeve is trumpet-shaped, and its diameter narrows from the air inlet to the air outlet of the gate.

[0012] According to one embodiment of the present invention, the flow guiding device further includes an opening adjustment mechanism, which adjusts the flow rate of gas passing through the conical sleeve by adjusting the opening size of the conical sleeve.

[0013] According to one embodiment of the present invention, the opening adjustment mechanism includes at least one telescopic member and at least one movable ring. The movable ring is sleeved on the outside of the conical sleeve. One end of the telescopic member is connected to the conical sleeve, and the other end is connected to the inner wall of the gate through a connecting seat. The telescopic member extends and retracts in the same direction as the axis of the gate. When the telescopic member extends and retracts, it drives the movable ring to move along the axis of the conical sleeve.

[0014] According to one embodiment of the present invention, the movable ring is coaxially arranged with the conical sleeve, and the movable ring is located at the end of the conical sleeve facing the air outlet.

[0015] According to one embodiment of the present invention, one end of the telescopic member is connected to the connecting seat, a tube is installed on the connecting seat, the tube is coaxially arranged with the axis of the gate, and the end of the conical sleeve facing the air outlet is sealed to one end of the tube.

[0016] According to one embodiment of the present invention, the conical sleeve is a rubber sleeve, and one end of the conical sleeve facing the air inlet is fixedly connected to the inner wall of the gate.

[0017] According to one embodiment of the present invention, the opening adjustment mechanism is provided in two sets. The diameter of the movable ring in one set of the opening adjustment mechanism is larger than the diameter of the movable ring in the other set of the opening adjustment mechanism. The movable rings in the two sets of the opening adjustment mechanism are sequentially sleeved on the outside of the conical sleeve along the axis of the conical sleeve.

[0018] According to one embodiment of the present invention, the pressure flow mechanism includes a first turbine, an output shaft, and a drive component. A vertically arranged support base is installed inside the gate. The drive component is installed on the support base. One end of the output shaft is connected to the output end of the drive component, and the other end extends to the air inlet. The first turbine is installed at the end of the output shaft near the air inlet. The first turbine is used to draw external air into the gate.

[0019] According to one embodiment of the present invention, at least one second turbine is rotatably mounted on the inner wall of the gate near the air outlet.

[0020] A flow guiding device, wherein the flow guiding device is the flow guiding device of the aforementioned axial flow fan.

[0021] (III) Beneficial effects of this utility model:

[0022] This utility model provides an axial flow fan, including a gate, a flow compression mechanism, and a flow guiding device;

[0023] One end of the gate forms an air inlet, and the other end forms an air outlet. A flow compression mechanism and a flow guiding device are installed sequentially inside the gate along its axis. The flow compression mechanism is located near the air inlet and is used to draw external air into the gate. The flow guiding device is used to regulate the gas flow rate inside the gate. The flow guiding device includes a conical sleeve, which is installed inside the gate and is coaxial with the gate. The conical sleeve is funnel-shaped, and its diameter narrows from the air inlet to the air outlet.

[0024] The pressure flow mechanism draws external air into the interior of the gate. As the diameter of the conical sleeve narrows from the air inlet to the air outlet of the gate, forming a funnel shape, the flow velocity of the gas flowing through the conical sleeve will increase, so as to quickly discharge the axial airflow inside the gate, thereby increasing the exhaust volume and improving the working efficiency of the axial flow fan. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a structural diagram provided for Embodiment 1 of the present utility model;

[0027] Figure 2 This is a structural diagram of the flow guiding device and the gate provided in Embodiment 1 of this utility model;

[0028] Figure 3 This is a structural diagram of the first and second movable rings provided in Embodiment 1 of the present invention.

[0029] Icons: 1. Brake; 2. First turbine; 3. Output shaft; 4. Drive component; 5. Support base; 6. Fixed lug; 7. Conical sleeve; 8. Second movable ring; 9. First movable ring; 10. Telescopic component; 11. Connecting seat; 12. Fixed column; 13. Fixed seat; 14. Bearing seat; 15. Second turbine; 16. Third turbine; 18. Pipe body. Detailed Implementation

[0030] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] Example 1:

[0032] like Figures 1-3 As shown, Embodiment 1 of this utility model provides an axial flow fan, including a gate 1, a flow compression mechanism, and a flow guiding device; one end of the gate 1 forms an air inlet, and the other end forms an air outlet. The flow compression mechanism and the flow guiding device are installed sequentially inside the gate 1 along its axis; the flow compression mechanism is close to the air inlet and is used to draw external air into the gate 1; the flow guiding device is used to regulate the gas flow rate inside the gate 1. The flow guiding device includes a conical sleeve 7, which is installed inside the gate 1 and is coaxially arranged with the gate 1; the conical sleeve 7 is trumpet-shaped, and its diameter narrows from the air inlet to the air outlet of the gate 1.

[0033] In this embodiment, the pressure flow mechanism draws external air into the interior of the gate 1. As the diameter of the conical sleeve 7 narrows from the air inlet to the air outlet of the gate 1, forming a funnel shape, the flow velocity of the gas flowing through the conical sleeve 7 will increase, so as to quickly discharge the axial airflow inside the gate 1, thereby increasing the exhaust volume and improving the working efficiency of the axial flow fan.

[0034] As a preferred embodiment, such as Figure 1 and Figure 2 As shown, the flow guiding device also includes an opening adjustment mechanism, which adjusts the flow rate of gas passing through the conical sleeve 7 by adjusting the opening size of the conical sleeve 7. Specifically, the opening adjustment mechanism includes at least one telescopic member 10 and at least one movable ring. The movable ring is sleeved on the outside of the conical sleeve 7 and is coaxially arranged with the conical sleeve 7. The diameter of the movable ring is smaller than the maximum diameter of the conical sleeve 7 but larger than the minimum diameter of the conical sleeve 7. Further, one end of the telescopic member 10 is connected to the conical sleeve 7, and the other end is connected to the inner wall of the gate 1 through a connecting seat 11. The telescopic direction of the telescopic member 10 is the same as the axial direction of the gate 1. When the telescopic member 10 telescopics, it drives the movable ring to move along the axial direction of the conical sleeve 7. Specifically, when it is necessary to adjust the wind speed of the gas passing through the conical sleeve 7, the telescopic member 10 telescopically telescopically moves the movable ring along the axial direction of the conical sleeve 7, thereby tightening or loosening the conical sleeve 7, so as to change the opening size of the conical sleeve 7.

[0035] Specifically, in this embodiment, the conical sleeve 7 is a metal or plastic sleeve with a certain deformation capability. When the telescopic member 10 moves the movable ring towards the air inlet of the gate 1, the diameter of the movable ring is larger than the minimum diameter of the conical sleeve 7 but smaller than the maximum diameter of the conical sleeve 7. This causes the movable ring to clamp onto the outer surface of the conical sleeve 7, thereby gradually reducing the opening on the left side of the conical sleeve 7 while the opening on the right side remains unchanged. This effectively reduces the opening degree of the conical sleeve 7. As a result, the flow velocity of the gas passing through the conical sleeve 7 increases, rapidly expelling the axial airflow inside the gate 1 and increasing the exhaust volume. Simultaneously, it also acts as a guide, allowing the gas passing through the conical sleeve 7 to flow along the axial direction of the gate 1.

[0036] When the telescopic component 10 moves the movable ring toward the air outlet of the gate 1, the movable ring gradually loosens the conical sleeve 7, and the opening of the conical sleeve 7 gradually becomes larger.

[0037] As a preferred embodiment, such as Figure 1 As shown, at least one connecting seat 11 is installed on the inner wall of the gate 1. The connecting seat 11 is perpendicular to the axis of the gate 1, and one end of the connecting seat 11 is fixed to the inner wall of the gate 1. The telescopic member 10 is perpendicular to the connecting seat 11, and the right end of the telescopic member 10 is fixedly connected to the connecting seat 11. A pipe body 18 is installed on the surface of the connecting seat 11 facing the air inlet of the gate 1. The pipe body 18 is coaxially arranged with the conical sleeve 7. The end of the conical sleeve 7 facing the pipe body 18 is open and sealed to the pipe body 18. The cavity of the pipe body 18 is connected to the inner cavity of the conical sleeve 7. At this time, the end of the conical sleeve 7 facing the air inlet of the gate 1 is in contact with the inner wall of the gate 1. In this way, the gas flowing in from the air inlet further flows into the interior of the conical sleeve 7, and then the gas flows through the conical sleeve 7 and enters the pipe body 18, and finally flows out from the pipe body 18.

[0038] Preferred, such as Figure 1 and Figure 3 As shown, there are two connecting seats 11, each in the shape of a rod. The two connecting seats 11 are symmetrically arranged about the axis of the control gate 1. A connecting rod is provided at the top and bottom of the movable ring, and the two connecting rods are symmetrically arranged about the axis of the movable ring. Figure 3 As shown, the connecting rod is L-shaped, and there are two telescopic components 10. Each telescopic component 10 is fixed to a connecting seat 11, with each connecting seat 11 corresponding to a connecting rod. Specifically, the top telescopic component 10 connects to the connecting rod at the top of the movable ring, and the bottom telescopic component 10 connects to the connecting rod at the bottom of the movable ring. These two telescopic components 10 extend or retract simultaneously to move the movable ring to the left or right, providing a more stable movement of the movable ring.

[0039] It should be noted that since the left end of the conical sleeve 7 is not connected to the inner wall of the gate 1, when the telescopic component 10 extends and drives the movable ring to move towards the air inlet, the movable ring clamps the conical sleeve 7 so that the opening at the left end of the conical sleeve 7 gradually becomes smaller. At this time, the width of the gap between the left edge of the conical sleeve 7 and the side wall of the gate 1 will gradually increase. At this time, a small part of the gas in the air inlet will directly pass through this gap and flow into the interior of the gate 1. Since the connecting seat 11 is rod-shaped, it will not completely block the flow of gas.

[0040] Optional, such as Figure 1 and Figure 3 As shown, the opening adjustment mechanism has two sets. The first set of opening adjustment mechanism has a first movable ring 9, and the second set of opening adjustment mechanism has a second movable ring 8. The diameter of the second movable ring 8 is larger than that of the first movable ring 9. Both the second movable ring 8 and the first movable ring 9 are sleeved on the outside of the conical sleeve 7, with the second movable ring 8 located to the left of the first movable ring 9. Four connecting seats 11 are provided, evenly arranged around the axis of the gate 1, and located at the top, bottom, left, and right positions of the gate 1 cross-section. The two telescopic members 10 connected to the first movable ring 9 are respectively attached to the two connecting seats 11 at the top and bottom of the gate 1 cross-section, while the two telescopic members 10 connected to the second movable ring 8 are respectively attached to the two connecting seats 11 on the left and right sides of the gate 1 cross-section.

[0041] As an alternative embodiment, in this embodiment, the conical sleeve 7 is a rubber sleeve, and the end of the conical sleeve 7 facing the air inlet is fixedly connected to the inner wall of the gate 1. A connecting seat 11 is provided, which is annular in shape and coaxially arranged with the gate 1. The edge of the connecting seat 11 is fixedly connected to the inner wall of the gate 1. The pipe body 18 is fixedly installed on the left side of the connecting seat 11, and is coaxially arranged with the connecting seat 11. The pipe body 18 is coaxially arranged with the central hole on the connecting seat 11. The opening on the right side of the conical sleeve 7 is sealed to the left end of the pipe body 18.

[0042] The diameter of the left end face of the conical sleeve 7 and the diameter of the right end face of the conical sleeve 7 remain unchanged. However, when the telescopic component 10 moves the movable ring left and right, the shape of the inner cavity of the conical sleeve 7 will change accordingly.

[0043] Preferred, such as Figure 1 As shown, the flow compression mechanism includes a first turbine 2, an output shaft 3, and a drive component 4. A vertically arranged support base 5 is installed inside the gate 1. The support base 5 is located on the right side of the flow guiding device. The drive component 4 is installed on the support base 5. The right end of the output shaft 3 is connected to the output end of the drive component 4, and its other end extends to the air inlet. The first turbine 2 is installed at the end of the output shaft 3 near the air inlet. The first turbine 2 is located on the left side of the conical sleeve 7.

[0044] When the pressure flow mechanism is working, the output shaft 3 is driven to rotate by the drive component 4, which in turn drives the first turbine 2 to rotate. The rotation of the first turbine 2 draws external air into the interior of the brake 1.

[0045] Among them, the driving component 4 is a motor.

[0046] Optionally, a third turbine 16 is installed on the output shaft 3. The third turbine 16 is located to the right of the first turbine 2 and serves the same function as the first turbine 2.

[0047] Optional, such as Figure 1 As shown, two vertically arranged fixed seats 13 are arranged sequentially on the inner wall of the gate 1. The fixed seats 13 are rod-shaped, and a fixed column 12 is rotatably installed between the two fixed seats 13. Two second turbines 15 are rotatably installed on the fixed column 12. Specifically, the second turbines 15 are installed on the fixed column 12 through bearing seats 14.

[0048] Optionally, multiple fixed lugs 6 are installed on the outer side of the gate 1. When hoisting the axial flow fan, the slings can be tied to the fixed lugs 6 to facilitate the hoisting of the axial flow fan.

[0049] Example 2:

[0050] A flow guiding device, which is the flow guiding device of an axial flow fan in Embodiment 1.

[0051] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An axial flow fan, characterized in that, Includes a gate (1), a flow control mechanism, and a flow guiding device; One end of the gate (1) forms an air inlet, and the other end forms an air outlet. The pressure mechanism and the flow guiding device are installed sequentially inside the gate (1) along the axis of the gate (1). The pressure mechanism is located near the air inlet and is used to draw external air into the gate (1). The flow guiding device is used to adjust the gas flow rate inside the gate (1). The flow guiding device includes a conical sleeve (7), which is installed inside the gate (1) and is coaxially arranged with the gate (1). The conical sleeve (7) is trumpet-shaped, and the diameter of the conical sleeve (7) narrows from the air inlet to the air outlet of the gate (1).

2. An axial flow fan according to claim 1, characterized in that, The flow guiding device also includes an opening adjustment mechanism, which adjusts the flow rate of gas passing through the conical sleeve (7) by adjusting the size of the opening of the conical sleeve (7).

3. An axial flow fan according to claim 2, characterized in that, The opening adjustment mechanism includes at least one telescopic member (10) and at least one movable ring. The movable ring is sleeved on the outside of the conical sleeve (7). One end of the telescopic member (10) is connected to the conical sleeve (7), and the other end is connected to the inner wall of the gate (1) through a connecting seat (11). The telescopic member (10) extends and retracts in the same direction as the axis of the gate (1). When the telescopic member (10) extends and retracts, it drives the movable ring to move along the axis of the conical sleeve (7).

4. An axial flow fan according to claim 3, characterized in that, The movable ring is coaxially arranged with the conical sleeve (7), and the movable ring is located at the end of the conical sleeve (7) facing the air outlet.

5. An axial flow fan according to claim 3, characterized in that, One end of the telescopic component (10) is connected to the connecting seat (11), and a pipe body (18) is installed on the connecting seat (11). The pipe body (18) is coaxially arranged with the axis of the gate (1). The end of the conical sleeve (7) facing the air outlet is sealed to one end of the pipe body (18).

6. An axial flow fan according to claim 5, characterized in that, The conical sleeve (7) is a rubber sleeve, and the end of the conical sleeve (7) facing the air inlet is fixedly connected to the inner wall of the gate (1).

7. An axial flow fan according to claim 3, characterized in that, The opening adjustment mechanism is provided in two sets. The diameter of the movable ring in one set of the opening adjustment mechanism is larger than the diameter of the movable ring in the other set of the opening adjustment mechanism. The movable rings in the two sets of the opening adjustment mechanism are sequentially sleeved on the outside of the conical sleeve (7) along the axis of the conical sleeve (7).

8. An axial flow fan according to claim 3, characterized in that, The pressure flow mechanism includes a first turbine (2), an output shaft (3), and a drive component (4). A vertically arranged support base (5) is installed inside the gate (1). The drive component (4) is installed on the support base (5). One end of the output shaft (3) is connected to the output end of the drive component (4), and the other end extends to the air inlet. The first turbine (2) is installed at the end of the output shaft (3) near the air inlet. The first turbine (2) is used to draw external air into the gate (1).

9. An axial flow fan according to claim 8, characterized in that, At least one second turbine (15) is rotatably mounted on the inner wall of the gate (1) near the air outlet.

10. A flow guiding device, characterized in that, The flow guiding device is the flow guiding device of any one of the axial flow fans described in claims 1-9.

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