Air deflector, cleaning fan and harvester

Abstract

The utility model provides an air deflector, cleaning fan and harvester, the air deflector comprises an installation part and an air guide part, the air guide part is installed on the inner wall of the air outlet of cleaning fan through the installation part, the first end of the air guide part is connected with the installation part, and an included angle is formed between the air guide part and the installation part. According to the air guide plate, through mutual cooperation of the installation part and the air guide part, the cleaning fan provided with the air guide plate can achieve flow dividing type uniform air outlet, and under the condition that the air direction changes greatly, the air flow uniformity can be improved by adjusting the air direction. The air deflector is simple in overall structure and convenient to install, a user can rapidly install the air deflector on the rotating shaft of the cleaning fan through the installation part, then excellent airflow control is achieved, airflow flowing is more uniform, the efficiency and the cleaning capacity of the cleaning fan are improved, and cleaning losses are reduced.

Description

Technical Field

[0001] This application relates to the field of harvester cleaning fan technology, and in particular to a guide vane, a cleaning fan and a harvester. Background Technology

[0002] In recent years, with increasing attention being paid to harvesting losses by combine harvesters, cleaning losses, as one of the sources of loss, have also faced stricter requirements. As an important cleaning component, the size, velocity, and uniformity of the cleaning fan directly affect the cleaning loss index. When the air volume and velocity are high, improving the uniformity of the wind field distribution has become one of the key factors restricting cleaning capacity.

[0003] The existing cleaning fan solutions for harvesters mostly involve adding a flat or bent plate as a guide vane at the air outlet. However, this structural design cannot achieve airflow diversion and the airflow direction changes significantly, making it impossible to improve the uniformity of airflow by adjusting the airflow direction.

[0004] Therefore, a wind deflector needs to be designed to solve the above problems. Utility Model Content

[0005] In view of this, in order to overcome the shortcomings of the prior art, this utility model provides a wind guide plate, a cleaning fan and a harvester, which effectively solves the problem that the existing wind guide plate structure design cannot achieve flow diversion and the wind direction changes greatly, making it impossible to improve the uniformity of airflow by adjusting the wind direction.

[0006] According to a first aspect of the present invention, an air guide plate is provided for a cleaning fan, wherein the air guide plate includes an installation part and an air guide part, the air guide part is installed on the inner wall of the air outlet of the cleaning fan through the installation part, a first end of the air guide part is connected to the installation part, and an angle is formed between the air guide part and the installation part.

[0007] Preferably, there are multiple air guides, which are spaced apart on the mounting portion; an airflow gap is provided between two adjacent air guides, so that when airflow passes through, part of the airflow flows directly through the airflow gap, and another part of the airflow contacts the air guide to change the flow direction.

[0008] Preferably, the inner wall of the air outlet of the cleaning fan is provided with a rotating shaft, and the mounting part is provided with a mounting hole, and the mounting part is connected to the rotating shaft through the mounting hole; there are multiple mounting holes, and the multiple mounting holes are arranged at intervals in the mounting part.

[0009] Preferably, the air guide section has a pressure relief hole, which is located on the windward side of the air guide section.

[0010] Preferably, the included angle is 120°-160°; the included angle faces the direction of airflow.

[0011] Preferably, the length of the air guide is greater than the length of the mounting portion.

[0012] According to a second aspect of the present invention, a cleaning fan is provided, wherein the cleaning fan includes the air guide plate as described above.

[0013] Preferably, the cleaning fan includes multiple rotating shafts and multiple air guide plates, the multiple rotating shafts are disposed on the inner wall of the cleaning fan, and the multiple air guide plates are disposed in a one-to-one correspondence with the multiple rotating shafts.

[0014] Preferably, the two air guide plates facing each other are arranged symmetrically.

[0015] According to a third aspect of the present invention, a harvester is provided, wherein the harvester includes a cleaning blower as described above.

[0016] According to the present invention, the air guide plate, through the cooperation of the mounting part and the air guide part, enables the cleaning fan equipped with the air guide plate to achieve uniform airflow in a split manner. Furthermore, even when the airflow direction changes significantly, the uniformity of the airflow can be improved by adjusting the airflow direction. The air guide plate has a simple overall structure and is easy to install. Users can quickly install the air guide plate onto the rotating shaft of the cleaning fan using the mounting part, thereby achieving excellent airflow control, making the airflow more uniform, improving the efficiency and cleaning capacity of the cleaning fan, and reducing cleaning losses.

[0017] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of the air guide plate according to an embodiment of the present invention is shown;

[0020] Figure 2 A schematic diagram of the air guide section according to an embodiment of the present invention is shown;

[0021] Figure 3A schematic diagram of a guide vane installed on a cleaning fan according to an embodiment of the present invention is shown.

[0022] Figure 4 A side view showing an air guide plate installed on a cleaning fan according to an embodiment of the present invention is shown.

[0023] Figure 5 A schematic diagram of gas flow according to an embodiment of the present invention is shown.

[0024] Reference numerals: 1-Mounting part; 101-Mounting hole; 2-Air guide part; 201-Included angle; 202-Gap; 203-Pressure relief hole; 3-Rotating shaft; 4-Inner wall. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application 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 application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of the embodiments of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "connect" 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 internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] According to a first aspect of this utility model, an air guide plate is provided, such as... Figures 1 to 5 As shown, the air guide plate is used for a cleaning fan, which can be, for example, a device in the prior art. The cleaning fan includes an inner wall 4 of the air outlet and a rotating shaft 3 for mounting the air guide plate. The rotating shaft 3 can rotate, thereby also driving the air guide plate to change position. Since the inner wall 4 of the air outlet and the rotating shaft 3 are both components in the prior art, their structure and connection movement are known to those skilled in the art and will not be described in detail here. The air guide plate includes a mounting part 1 and a guiding part 2.

[0030] In the following description, reference will be made to Figures 1 to 5 The detailed structure of the mounting part 1 and the air guide part 2 of the air guide plate is described in detail. The air guide plate is connected to the rotating shaft 3 through the mounting part 1. The air guide part 2 is used to guide or control the flow direction of the airflow, so that part of the airflow continues to flow forward, while the other part of the airflow is guided and changed direction, blowing towards a lower wind position, thereby achieving airflow mixing. The mounting part 1 can be formed into a cuboid plate structure for mounting the air guide part 2. Alternatively, the air guide part 2 and the mounting part 1 can be an integral structure.

[0031] Specifically, such as Figure 2 As shown, to better control the airflow direction and facilitate airflow guidance, the air guide 2 can also be formed as a cuboid plate structure. The first end of the cuboid plate structure is connected to the mounting part 1, and an angle 201 is formed between the air guide 2 and the mounting part 1. Thus, the air guide 2 and the mounting part 1 can form a biomimetic structure resembling a finger. This biomimetic structure can further control the airflow direction and make the airflow more uniform during mixing. The finger-shaped biomimetic structure of the air guide 2 allows the airflow to be split at different positions, thereby improving the uniformity of the air outlet of the cleaning fan equipped with this air guide plate, reducing the cleaning loss rate, and achieving a more uniform airflow effect at the air outlet compared to the original structure.

[0032] Through the cooperation of the mounting part 1 and the air guide part 2, the air guide plate enables the cleaning fan equipped with it to achieve uniform airflow in a split manner. Even when the airflow direction changes significantly, the uniformity of the airflow can be improved by adjusting the airflow direction. The air guide plate has a simple overall structure and is easy to install. Users can quickly install the air guide plate onto the inner wall of the cleaning fan's outlet using the mounting part 1, thereby achieving excellent airflow control, making the airflow more uniform, improving the efficiency and cleaning capacity of the cleaning fan, and reducing cleaning losses.

[0033] Preferably, such as Figures 1 to 3 As shown, in this embodiment, the number of air guide sections 2 can be multiple, and the multiple air guide sections 2 are arranged at intervals on the mounting section 1. Figure 1 and Figure 3 As shown, there can be four air guide sections 2, which are arranged at intervals on the mounting section 1. A gap 202 for airflow is provided between two adjacent air guide sections 2. When airflow passes through, part of the airflow flows directly through the gap 202, while the other part of the airflow comes into contact with the air guide section 2 to change its flow direction. By regulating the flow path of the airflow in this way, the airflow with the changed path is blown towards a position with lower wind force, thereby achieving airflow mixing.

[0034] Preferably, such as Figure 1 and Figure 3 As shown, in this embodiment, the mounting part 1 has a mounting hole 101, and the mounting part 1 is fixedly connected to the rotating shaft 3 of the cleaning blower through the mounting hole 101. The fixed connection can be achieved, for example, by welding or by using fastening bolts.

[0035] Preferably, such as Figure 1 and Figure 3 As shown, in this embodiment, there are multiple mounting holes 101, which are spaced apart on the mounting portion 1. The number of mounting holes 101 can be selected according to the length of the mounting portion 1 to ensure the connection strength between the mounting portion 1 and the rotating shaft 3.

[0036] Preferably, such as Figure 1 and Figure 3 As shown, in this embodiment, the air guide 2 is also provided with a pressure relief hole 203, which can be, for example, a circular hole. Adding the pressure relief hole 203 allows some of the airflow blowing onto the air guide 2 to pass through it, resulting in more uniform airflow mixing, reduced pressure, and decreased noise.

[0037] However, this is not the only option. The pressure relief holes 203 of the air guide section 2 can be selectively installed. Depending on the specifications and air volume of the cleaning fan, if the air volume is large, more pressure relief holes 203 can be installed in appropriate locations. If the air volume is small, pressure relief holes 203 can be omitted. Users can make reasonable choices based on the air volume.

[0038] Preferably, such as Figure 1 and Figure 3 As shown, in this embodiment, the pressure relief hole 203 is located on the windward side of the air guide section 2. The pressure relief hole 203 located on the windward side allows a portion of the airflow blowing from the air outlet to flow out through the pressure relief hole 203, reducing the pressure and noise at that location. Similarly, the location of the pressure relief hole 203 can be reasonably selected based on the airflow volume.

[0039] Preferably, such as Figure 2 As shown, in the embodiment, the included angle 201 is 120°-160°, and the obtuse angle allows the air guide 2 to have a larger contact area with the airflow.

[0040] Preferably, such as Figure 4 and Figure 5 As shown, in this embodiment, the included angle 201 faces the direction of airflow. Figure 4 and Figure 5 In the process, the gas flows from top to bottom. In order to make the gas flow more uniform, the gas located on the outside needs to be directed towards the middle. Therefore, the air guide 2 bends relative to the mounting part 1 toward the middle of the cleaning fan outlet, thereby making the direction of gas flow adjustable and making the gas flow more uniform.

[0041] Preferably, such as Figure 4 and Figure 5 As shown in the embodiment, the length of the air guide 2 is greater than the length of the mounting part 1. In actual use, the mounting part 1 mainly functions as a driving plate. The rotation of the shaft 3 causes the mounting part 1 to change position, thereby changing the contact position between the air guide 2 and the airflow, thus changing the direction of gas flow. Therefore, in order to achieve better control of the gas flow direction, the length of the air guide 2 needs to be relatively long.

[0042] Furthermore, as mentioned above, the shaft 3 of the cleaning fan is rotatable. Therefore, when the cleaning fan with the air guide plate installed is working, the rotation of the shaft 3 can drive the air guide 2 to change position, thereby adjusting the strength of the airflow guidance by the air guide plate and finely adjusting the uniformity of the airflow to achieve uniform air output from the cleaning fan.

[0043] This air guide plate, through the cooperation of the mounting section and the air guiding section, enables the cleaning fan equipped with it to achieve uniform, split-flow airflow. Even with significant changes in airflow direction, the uniformity of airflow can be improved by adjusting the airflow direction. The air guide plate has a simple overall structure and is easy to install. Users can quickly install the air guide plate onto the rotating shaft of the cleaning fan using the mounting section, thereby achieving excellent airflow control, making the airflow more uniform, improving the efficiency and cleaning capacity of the cleaning fan, and reducing cleaning losses.

[0044] In addition, such as Figures 3 to 5 As shown, a cleaning fan is provided according to a second aspect of this utility model, the cleaning fan including the air guide plate as described above. The cleaning fan includes multiple rotating shafts 3 and multiple air guide plates. The multiple rotating shafts 3 are disposed on the inner wall 4 of the air outlet of the cleaning fan, and the multiple air guide plates are arranged in a one-to-one correspondence with the multiple rotating shafts 3. Thus, multiple rotating shafts 3 and multiple air guide plates can be installed inside a cleaning fan to achieve better airflow control.

[0045] Preferably, such as Figure 4 As shown in the embodiment, two air guide plates facing each other are symmetrically arranged. This symmetry can also be understood as the included angle 201 of the two air guide plates simultaneously facing the direction of airflow, thus achieving simultaneous airflow regulation.

[0046] Furthermore, according to a third aspect of the present invention, a harvester is provided, the harvester including the wind deflector as described above.

[0047] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. A wind deflector for a cleaning fan, characterized by The air deflector comprises a mounting portion and an air guiding portion, the air guiding portion is mounted to the inner wall of the air outlet of the cleaning fan through the mounting portion, a first end of the air guiding portion is connected with the mounting portion, and an included angle is formed between the air guiding portion and the mounting portion.

2. The wind deflector of claim 1, wherein, The number of the air guiding portions is multiple, and the multiple air guiding portions are arranged at intervals on the mounting portion. An airflow flowing gap is arranged between two adjacent air guiding portions, in the case of airflow, a part of the airflow directly flows through the airflow flowing gap, and another part of the airflow contacts the air guiding portion to change the flowing direction.

3. The wind deflector of claim 1, wherein, The inner wall of the air outlet of the cleaning fan is provided with a rotating shaft, the mounting portion is provided with mounting holes, and the mounting portion is connected with the rotating shaft through the mounting holes. The number of the mounting holes is multiple, and the multiple mounting holes are arranged at intervals on the mounting portion.

4. The wind deflector of claim 1, wherein, The air guiding portion is provided with a pressure relief hole, and the pressure relief hole is arranged on the windward surface of the air guiding portion.

5. The wind deflector of claim 1, wherein, The angle of the included angle is 120°-160°. The included angle faces the flowing direction of the airflow.

6. The wind deflector of claim 1, wherein, The length of the air guiding portion is greater than the length of the mounting portion.

7. A cleaning fan, characterized in that The cleaning fan comprises the air deflector according to any one of claims 1 to 6.

8. The cleaning fan of claim 7, wherein, The cleaning fan comprises multiple rotating shafts and multiple air deflectors, the multiple rotating shafts are arranged on the inner wall of the cleaning fan, and the multiple air deflectors are arranged in one-to-one correspondence with the multiple rotating shafts.

9. The cleaning fan of claim 8, wherein, Two air deflectors facing each other are symmetrically arranged.

10. A harvester characterized by The harvester comprises the cleaning fan according to any one of claims 7 to 9.

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