Slope type fan structure

Abstract

The utility model discloses a slope type fan structure which comprises a shell, fan blades and a driving mechanism, the shell comprises a front shell and an air cylinder, the front shell is provided with an air cavity, an air inlet and an air outlet which are communicated with the air cavity are formed in the front shell, the air outlet corresponds to the air inlet, and the fan blades are arranged on the front shell. An included angle a is formed between the air duct and the air inlet, and an opening in one end of the air duct is communicated with the air outlet; the fan blades are arranged in the air duct; the driving mechanism is connected with the fan blades and used for driving the fan blades to rotate. The fan with the structure has the beneficial effects that the fan with the structure can reduce the wind resistance when wind flows in the wind cavity and the wind cylinder, the wind speed is increased, and the air inlet amount in unit time is increased, so that the energy efficiency ratio of the fan is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a slope-type fan structure. Background Art

[0002] A fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine. The fan is a common abbreviation for gas compression and gas transportation machinery. Generally, the fans mentioned include ventilators, blowers, and wind turbines. Fans are widely used in factories, mines, tunnels, cooling towers, vehicles, ships, and buildings for ventilation, dust removal, and cooling, ventilation and induced draft of boilers and industrial furnaces, cooling and ventilation in air conditioning equipment and household electrical appliances, drying and selection of grains, air source of wind tunnels, inflation and propulsion of hovercraft, etc.

[0003] The existing fans (such as an axial flow ventilation with a square-round gradual change double-layer shell disclosed in the application number 201822213247.8) are driven by a motor to drive the fan blades to rotate. The inclined fan blades cut into the air from the back and discharge from the front, thus forming wind. When the wind flows in the wind barrel, it will encounter a large wind resistance, which is likely to reduce the flow velocity of the wind, resulting in a decrease in the air volume of the fan and a relatively low energy efficiency ratio of the fan. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the above technical deficiencies, and propose a slope-type fan structure to solve the technical problems that in the prior art, when the wind flows in the wind barrel, it will encounter a large wind resistance, which is likely to reduce the flow velocity of the wind, resulting in a decrease in the air volume of the fan and a relatively low energy efficiency ratio of the fan.

[0005] To achieve the above technical purpose, the technical solution of the utility model provides a slope-type fan structure, including:

[0006] A housing, which includes a front housing and a wind barrel. The front housing has a wind cavity. An air inlet and an air outlet communicating with the wind cavity are opened on the front housing. The air outlet corresponds to the air inlet and forms an included angle a with the air inlet. One end opening of the wind barrel is communicated with the air outlet;

[0007] Fan blades, arranged inside the wind barrel;

[0008] A driving mechanism, connected to the fan blades for driving the fan blades to rotate.

[0009] Further, the cross-section of the wind cavity perpendicular to the wind flow direction is square.

[0010] Further, the cross-section of the wind cavity parallel to the wind flow direction is a right triangle structure.

[0011] Further, the front side of the front housing is open to form the air inlet.

[0012] Furthermore, the air duct is in a horn-shaped structure.

[0013] Furthermore, the diameter of the air duct gradually increases along the flow direction of the wind.

[0014] Furthermore, the driving mechanism includes a rotating shaft, a rotation driving member, and a transmission assembly. The rotating shaft is arranged along the axial direction of the air duct. One end of the rotating shaft is located inside the air duct, and the other end of the rotating shaft is located inside the air cavity and is rotatably connected to the front shell. The fan blades are fixedly sleeved on the rotating shaft. The rotation driving member is arranged inside the air cavity and is fixedly connected to the front shell. Both ends of the transmission assembly are respectively connected to the output shaft of the rotation driving member and the other end of the rotating shaft to convert the rotation of the output shaft of the rotation driving member into the rotation of the rotating shaft.

[0015] Furthermore, the housing further includes a mounting bracket. The mounting bracket is arranged inside the air cavity and is fixedly connected to the front shell. The other end of the rotating shaft is rotatably connected to the mounting bracket, and the rotation driving member is fixedly connected to the mounting bracket.

[0016] Furthermore, the sloped fan structure further includes a louver. The louver is arranged at the air inlet, and it includes a plurality of blades, an adjustment assembly, and a counterweight. Each of the blades is arranged side by side. Both ends of each blade are rotatably connected to the front shell via a pin shaft. The head and tail sides of adjacent blades abut against each other. The pressure difference on both sides of the louver can drive each blade to rotate, so that the head and tail sides of adjacent blades are separated. The adjustment assembly is connected to each blade to enable each blade to rotate synchronously. The counterweight is connected to one of the blades to make the head and tail sides of adjacent blades abut against each other.

[0017] Furthermore, the adjustment assembly is arranged outside each blade, and it includes a plurality of connecting blocks and an adjustment rod. Each connecting block is fixedly connected to the corresponding blade, and the adjustment rod is rotatably connected to each connecting block.

[0018] Compared with the prior art, the beneficial effects of the present utility model include: during use, by controlling the driving mechanism, the driving mechanism can drive the fan blades to rotate. During the rotation of the fan blades, the air can be stirred to make the air flow and form wind. The wind enters the air cavity along the air inlet and enters the air duct through the air outlet. Since the air outlet corresponds to the air inlet and forms an angle a with the air inlet, an angle b is formed between the air duct and the air inlet. The fan of this structure can reduce the wind resistance when the wind flows in the air cavity and the air duct, improve the wind speed, and increase the air intake per unit time, thereby improving the energy efficiency ratio of the fan. Description of the Drawings

[0019] Figure 1 It is a three-dimensional structure schematic diagram of a ramp-type fan structure provided by the present utility model;

[0020] Figure 2 It is a structure schematic diagram of a ramp-type fan structure provided by the present utility model from another perspective after omitting two side plates of the front shell;

[0021] Figure 3 is Figure 2 The front view of a ramp-type fan structure in

[0022] Figure 4 is Figure 2 The enlarged view of part A in

[0023] Figure 5 is Figure 2 The structure schematic diagram of the arrangement relationship between the various blades in a ramp-type fan structure in

[0024] In the figure: 100 - housing, 110 - front shell, 111 - air cavity, 112 - air inlet, 113 - air outlet, 120 - air duct, 130 - mounting bracket, 200 - fan blade, 300 - driving mechanism, 310 - rotating shaft, 320 - rotation driving member, 330 - transmission assembly, 400 - louver, 410 - blade, 420 - adjusting assembly, 421 - connecting block, 422 - adjusting rod, 430 - counterweight. Detailed implementation manners

[0025] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] The present utility model provides a ramp-type fan structure, and its structure is as shown in Figure 1 - Figure 3 shown, including a housing 100, a fan blade 200 and a driving mechanism 300. The housing 100 includes a front shell 110 and an air duct 120. The front shell 110 has an air cavity 111. An air inlet 112 and an air outlet 113 that communicate with the air cavity 111 are provided on the front shell 110. The air outlet 113 corresponds to the air inlet 112 and forms an included angle a with the air inlet 112. One end opening of the air duct 120 communicates with the air outlet 113; the fan blade 200 is arranged in the air duct 120; the driving mechanism 300 is connected to the fan blade 200 and is used to drive the fan blade 200 to rotate.

[0027] During use, by controlling the driving mechanism 300, the driving mechanism 300 can drive the fan blade 200 to rotate. During the rotation of the fan blade 200, the air can be stirred, causing the air to flow and form wind. The wind enters the wind cavity 111 along the air inlet 112 and enters the air duct 120 through the air outlet 113. Since the air outlet 113 corresponds to the air inlet 112 and forms an angle a with the air inlet 112, the air duct 120 forms an angle b with the air inlet 112. For the blower of this structure, the wind resistance during the flow of the wind in the wind cavity 111 and the air duct 120 can be reduced, the wind speed can be increased, and the air intake volume per unit time can be increased, thereby improving the energy efficiency ratio of the blower.

[0028] As a preferred embodiment, please refer to Figure 2 and Figure 3 , the cross-section of the wind cavity 111 perpendicular to the wind flow direction is square, which can increase the air intake volume.

[0029] As a preferred embodiment, please refer to Figure 2 and Figure 3 , the cross-section of the wind cavity 111 parallel to the wind flow direction is a right triangle structure, so that the front shell 110 forms a ramp structure, which can reduce the wind resistance when the wind flows in the wind cavity 111.

[0030] As a preferred embodiment, please refer to Figure 2 and Figure 3 , the front side of the front shell 110 is open to form the air inlet 112, which can increase the area of the air inlet 112, thereby increasing the air volume of the blower.

[0031] As a preferred embodiment, please refer to Figure 1 and Figure 2 , the air outlet 113 is opened on the rear side of the front shell 110 to facilitate the corresponding relationship between the air outlet 113 and the air inlet 112.

[0032] As a preferred embodiment, please refer to Figure 1 , the air duct 120 is a horn-shaped structure, which can improve the wind flow effect.

[0033] As a preferred embodiment, please refer to Figure 1 , the diameter of the air duct 120 gradually increases along the wind flow direction, which can increase the speed of the wind flowing from one end of the air duct 120 to the other end.

[0034] As a preferred embodiment, please refer to Figure 2 and Figure 3, the driving mechanism 300 includes a rotating shaft 310, a rotation driving member 320 and a transmission assembly 330. The rotating shaft 310 is arranged along the axial direction of the air duct 120. One end of the rotating shaft 310 is located inside the air duct 120, and the other end of the rotating shaft 310 is located inside the air cavity 111 and is rotatably connected to the front shell 110. The fan blade 200 is fixedly sleeved on the rotating shaft 310. The rotation driving member 320 is arranged inside the air cavity 111 and is fixedly connected to the front shell 110. Both ends of the transmission assembly 330 are respectively connected to the output shaft of the rotation driving member 320 and the other end of the rotating shaft 310 to convert the rotation of the output shaft of the rotation driving member 320 into the rotation of the rotating shaft 310. When the rotation driving member 320 is started, the transmission assembly 330 can convert the rotation of the output shaft of the rotation driving member 320 into the rotation of the rotating shaft 310, and the rotation of the rotating shaft 310 will drive the fan blade 200 to rotate.

[0035] As a preferred embodiment, the rotation driving member 320 is a motor.

[0036] As a preferred embodiment, the transmission assembly 330 is a pulley drive, which will not be elaborated too much in this solution.

[0037] As a preferred embodiment, please refer to Figure 1 and Figure 3 , the housing 100 further includes a mounting bracket 130. The mounting bracket 130 is arranged inside the air cavity 111 and is fixedly connected to the front shell 110. The other end of the rotating shaft 310 is rotatably connected to the mounting bracket 130. The rotation driving member 320 is fixedly connected to the mounting bracket 130. The mounting bracket 130 can support the rotating shaft 310 and the rotation driving member 320.

[0038] As a preferred embodiment, please refer to Figure 3 and Figure 5, the described ramp - type fan structure further includes a shutter 400. The shutter 400 is disposed at the air inlet 112 and includes a plurality of vanes 410, an adjustment assembly 420, and a counterweight 430. Each of the vanes 410 is arranged side by side, and both ends of each vane 410 are rotatably connected to the front housing 110 via a pin shaft. The head - and - tail sides of adjacent vanes 410 are in contact. The pressure difference on both sides of the shutter 400 can drive each vane 410 to rotate, so that the head - and - tail sides of adjacent vanes 410 are separated. The adjustment assembly 420 is connected to each vane 410 to enable each vane 410 to rotate synchronously. The counterweight 430 is connected to one of the vanes 410 to make the head - and - tail sides of adjacent vanes 410 in contact. When the head - and - tail sides of adjacent vanes 410 are in contact, the air inlet 112 is closed, preventing dust in the air from entering the air cavity 111. When the rotation driving member 320 is started, the fan blade 200 rotates, agitating the air to make the air flow, forming wind and generating negative pressure. A pressure difference is formed on both sides of the shutter 400, and each vane 410 rotates to separate the head - and - tail sides of adjacent vanes 410, and the air inlet 112 is opened. When the rotation driving member 320 stops, the vanes 410, under the action of the counterweight 430, return to the state where the head - and - tail sides of adjacent vanes 410 are in contact again, and the air inlet 112 is closed again.

[0039] As a preferred embodiment, please refer to Figure 4 and Figure 5 , the adjustment assembly 420 is disposed outside each vane 410 and includes a plurality of connecting blocks 421 and an adjustment rod 422. Each connecting block 421 is fixedly connected to the corresponding vane 410, and the adjustment rod 422 is rotatably connected to each connecting block 421. When the rotation driving member 320 is started, the fan blade 200 rotates, agitating the air to make the air flow, forming wind and generating negative pressure. A pressure difference is formed on both sides of the shutter 400, and each vane 410 rotates to separate the head - and - tail sides of adjacent vanes 410, and the air inlet 112 is opened. When the vane 410 rotates, it will drive the adjustment rod 422 to rotate via the corresponding connecting block 421, so that each vane 410 can rotate synchronously, realizing the synchronous opening or closing of each vane 410.

[0040] To better understand the present invention, the working principle of the technical solution of the present invention will be described in detail below in conjunction with Figure 1 - Figure 5 :

[0041] During use, after the rotation driving member 320 is started, the transmission assembly 330 can convert the rotation of the output shaft of the rotation driving member 320 into the rotation of the rotating shaft 310. The rotation of the rotating shaft 310 drives the fan blade 200 to rotate. During the rotation of the fan blade 200, the air is stirred, causing the air to flow, forming wind, and generating negative pressure. A pressure difference is formed on both sides of the louver 400, and each blade 410 rotates, separating the head and tail sides of adjacent blades 410, and the air inlet 112 is opened. When the blade 410 rotates, it drives the adjusting rod 422 to rotate via the corresponding connecting block 421, so that each blade 410 can rotate synchronously, realizing the synchronous opening of each blade 410. The wind enters the wind cavity 111 along the air inlet 112 and enters the wind cylinder 120 through the air outlet 113. When the rotation driving member 320 stops, the fan blade 200 stops rotating. Under the action of the counterweight 430, the blades 410 return to the state where the head and tail sides of adjacent blades 410 are in contact, and the air inlet 112 is closed again. Since the air outlet 113 corresponds to the air inlet 112 and forms an angle a with the air inlet 112, the wind cylinder 120 forms an angle b with the air inlet 112. The fan of this structure can reduce the wind resistance when the wind flows in the wind cavity 111 and the wind cylinder 120, improve the wind speed, and increase the air intake per unit time, thereby improving the energy efficiency ratio of the fan.

[0042] The slope-type fan structure provided by the present utility model has the following beneficial effects:

[0043] (1) When the blade 410 rotates, it drives the adjusting rod 422 to rotate via the corresponding connecting block 421, so that each blade 410 can rotate synchronously, realizing the synchronous opening or closing of each blade 410;

[0044] (2) This fan is a negative pressure fan used in livestock and poultry breeding houses. There are three blades 410. The three-blade cast aluminum fan blade has better wind resistance and can withstand higher negative pressure in the house;

[0045] (3) The air outlet 113 corresponds to the air inlet 112 and forms an angle a with the air inlet 112, so that the wind cylinder 120 forms an angle b with the air inlet 112, which can reduce the wind resistance when the wind flows in the wind cavity 111 and the wind cylinder 120. The fan of this structure can reduce the wind resistance when the wind flows in the wind cavity 111 and the wind cylinder 120, improve the wind speed, and increase the air intake per unit time, thereby improving the energy efficiency ratio of the fan.

[0046] The specific implementation manners of the present utility model described above do not constitute a limitation on the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A ramp-type fan structure, characterized in that, Comprising: A housing, which includes a front shell and a wind tube. The front shell has a wind cavity. An air inlet and an air outlet communicating with the wind cavity are formed on the front shell. The air outlet corresponds to the air inlet and forms an included angle a with the air inlet. One end of the wind tube is communicated with the air outlet; A fan blade, arranged inside the wind tube; A driving mechanism, connected to the fan blade and used for driving the fan blade to rotate.

2. The ramp-type fan structure according to claim 1, wherein, The cross-section of the wind cavity perpendicular to the wind flow direction is square.

3. The ramp-type fan structure according to claim 1, characterized in that, The cross-section of the wind cavity parallel to the wind flow direction is a right triangle structure.

4. The ramp-type fan structure according to claim 1, characterized in that, The front side of the front shell is open to form the air inlet.

5. The ramp-type fan structure according to claim 1, characterized in that, The wind tube is in a horn-shaped structure.

6. The ramp-type fan structure according to claim 5, wherein, The tube diameter of the wind tube gradually increases along the wind flow direction.

7. The ramp-type fan structure according to claim 1, characterized in that, The driving mechanism includes a rotating shaft, a rotation driving member and a transmission component. The rotating shaft is arranged along the axial direction of the wind tube. One end of the rotating shaft is located inside the wind tube, and the other end of the rotating shaft is located inside the wind cavity and is rotatably connected to the front shell. The fan blade is fixedly sleeved on the rotating shaft. The rotation driving member is arranged inside the wind cavity and is fixedly connected to the front shell. Two ends of the transmission component are respectively connected to the output shaft of the rotation driving member and the other end of the rotating shaft to convert the rotation of the output shaft of the rotation driving member into the rotation of the rotating shaft.

8. The ramp-type fan structure according to claim 7, wherein, The housing further includes a mounting bracket. The mounting bracket is arranged inside the wind cavity and is fixedly connected to the front shell. The other end of the rotating shaft is rotatably connected to the mounting bracket. The rotation driving member is fixedly connected to the mounting bracket.

9. The ramp-type fan structure according to claim 1, wherein, It further includes a louver. The louver is arranged at the air inlet and includes a plurality of blades, an adjusting component and a counterweight. Each of the blades is arranged side by side. Both ends of each blade are rotatably connected to the front shell via a pin shaft. The head and tail sides of adjacent blades are in contact. The pressure difference on both sides of the louver can drive each blade to rotate, so that the head and tail sides of adjacent blades are separated. The adjusting component is connected to each blade to enable each blade to rotate synchronously. The counterweight is connected to one of the blades to make the head and tail sides of adjacent blades in contact.

10. The ramp-type fan structure according to claim 9, characterized in that, The adjusting component is arranged outside each blade and includes a plurality of connecting blocks and an adjusting rod. Each connecting block is fixedly connected to the corresponding blade. The adjusting rod is rotatably connected to each connecting block.

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