CN219176433U - Air inlet plate and engineering machinery - Google Patents
Air inlet plate and engineering machinery Download PDFInfo
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- CN219176433U CN219176433U CN202320536067.1U CN202320536067U CN219176433U CN 219176433 U CN219176433 U CN 219176433U CN 202320536067 U CN202320536067 U CN 202320536067U CN 219176433 U CN219176433 U CN 219176433U
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- fan
- air inlet
- inlet plate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses an air inlet plate and engineering machinery, wherein the air inlet plate is arranged on an outer cover of a power cabin, a fan is arranged in the power cabin, and the air inlet plate is positioned on an air inlet side of the fan. The air inlet plate comprises a plurality of opening parts, plugging parts, edge parts and connecting parts, wherein the opening parts are sequentially distributed in an annular matrix by taking the rotation central axis of the fan as the center, and each opening part is in a radial opening structure; the blocking part is positioned on the rotation central axis of the fan; the edge part is positioned at the radial outer side of the opening part; the connecting portion is located between the adjacent opening portions, and two ends of the connecting portion are respectively connected with the blocking portion and the edge portion. Therefore, the air inlet plate and the engineering machinery provided by the utility model can change the propagation path of fan noise and reduce construction noise of the engineering machinery by arranging the plugging part on the far-field propagation path of the noise of the fan.
Description
Technical Field
The utility model relates to the technical field of engineering machinery, in particular to an air inlet plate and engineering machinery provided with the air inlet plate.
Background
In the engineering machinery industry, a power cabin generally refers to a cabin in which a power device such as an engine is located. In general, a power cabin forms an in-cabin space through an outer cover, and the in-cabin space is provided with a power device, a heat dissipation device, a hydraulic system and the like, wherein the outer cover is an important component part of engineering machinery and plays roles in appearance, heat dissipation, isolation, absorption of noise in the power cabin and the like.
In order to dissipate heat from the cooling system in the nacelle, the power nacelle cover is typically provided with grid-like tuyeres which are capable of directly transmitting noise from the interior of the power nacelle to the exterior of the nacelle. The working principle of the cooling system of the power cabin can be seen in fig. 3, air 5 enters the power cabin 1 from an air inlet plate 4 on the cabin outer cover 2, and a radiator assembly 6, a fan 3 and a motor 7 are arranged in the power cabin 1.
The noise component in the engine room 1 is complex and consists of various noise components such as aerodynamic, mechanical transmission, hydraulic noise and the like. The cooling fan 3 in the cooling system is used as one of the most main noise sources in the power cabin, the air inlet and the air outlet of the cooling fan are one main path for noise transmission, the larger the area of the air inlet is, the weaker the sound insulation effect of the outer cover of the power cabin is, the smaller the area of the air inlet is, the smaller the air inlet quantity is, the higher the temperature in the power cabin is, and the worse the heat dissipation effect is.
At present, how to reduce noise of a power cabin is an important technical problem in the field.
Disclosure of Invention
In view of the above, an object of the present utility model is to provide an air intake plate and an engineering machine capable of effectively reducing noise in a power cabin.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
an air inlet plate for set up on the dustcoat of the power cabin of engineering machine tool, the inside fan that is provided with of power cabin, the air inlet plate is located the air inlet side of fan, the air inlet plate includes:
the fan comprises a fan body, a plurality of opening parts, a plurality of air inlet holes and a plurality of air outlet holes, wherein the opening parts are arranged in an annular matrix with the rotation central axis of the fan as the center, and each opening part is of a radial opening structure;
the plugging part is positioned on the rotation central axis of the fan;
an edge portion located radially outward of the aperture portion;
and the connecting parts are positioned between the adjacent opening parts, and two ends of the connecting parts are respectively connected with the plugging parts and the edge parts.
Optionally, in the air inlet plate, a projection of the plugging portion on a rotation plane of the fan is in a central symmetrical pattern, a center of the plugging portion falls on a rotation central axis of the fan, and a distance between the farthest two points of the outer edge of the plugging portion is not less than half of a radius of the fan.
Optionally, in the air inlet plate, an outer edge profile of the blocking portion is circular, and a radius of the blocking portion is not smaller than half of a radius of the fan.
Optionally, in the air inlet plate, an outline of an outer edge of the blocking portion is square, and a diagonal dimension of the blocking portion is not smaller than half of a diameter of the fan.
Optionally, in the air inlet plate, a plurality of sides of the opening portions farthest from the center of the annular matrix are located on the same circular track, and a radius of the circular track is larger than a radius of the fan.
Optionally, in the air inlet plate, the radius of the circular track is 1.15-1.25 times of the radius of the fan.
Optionally, in the air inlet plate, the plugging part is provided with a silencing device.
Optionally, in the air inlet plate, the silencing device comprises silencing cotton;
and/or the muffler device comprises a perforated muffler.
Optionally, in the air inlet plate, the opening part has an arc hole structure.
The utility model provides an engineering machine tool, includes the power cabin, be provided with the fan in the power cabin, the power cabin is provided with the dustcoat outward, the dustcoat is located the part of the air inlet side of fan is provided with above-mentioned air inlet plate, the air inlet plate with axial distance between the fan is the default distance, the default distance is greater than zero.
According to the technical scheme, in the air inlet plate and the engineering machinery, the blocking part is arranged on the noise far-field propagation path of the fan, so that noise transmission can be effectively blocked, the noise reduction effect is improved, the construction noise of the engineering machinery is reduced, and the influence of the noise on an external receiver is reduced. In addition, in the air inlet plate, as the plurality of opening parts are sequentially distributed in the annular matrix around the plugging part, and each opening part is of a radial opening structure, the flow area of the air inlet can be maximized, the air inlet quantity is favorably improved, and the heat dissipation effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a wind inlet plate according to an embodiment of the present utility model;
FIG. 2 is a schematic structural view of a wind inlet plate according to an embodiment of the present utility model;
fig. 3 is a schematic view of an engine compartment cooling system according to an embodiment of the present utility model.
Wherein:
1-power engine room, 2-outer cover, 3-fan, 4-wind inlet plate,
41-opening portion, 42-blocking portion, 43-edge portion, 44-connecting portion,
5-gas, 6-radiator assembly, 7-motor.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or directions or positional relationships in which the inventive product is conventionally put in use, are merely for convenience of describing the present utility model and for simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 3, an embodiment of the present utility model provides an air intake plate 4. In specific implementation, the air inlet plate 4 is arranged on the outer cover 2 of the power cabin 1 of the engineering machinery, the fan 3 for radiating heat of the power device is arranged in the power cabin 1, and the air inlet plate 4 is positioned on the air inlet side of the fan 3.
Specifically, the intake plate 4 includes an opening portion 41, a blocking portion 42, an edge portion 43, and a connecting portion 44. Wherein:
the plurality of opening portions 41 are arranged in an annular matrix with the rotation central axis of the fan 3 as the center (namely, the plurality of opening portions 41 are arranged in an annular matrix around the rotation central axis of the fan 3, and form an annular matrix), and each opening portion 41 is of a radial opening structure;
the blocking portion 42 is located on the rotation central axis of the fan 3, and it should be noted that the blocking portion 42 may be a panel structure, a block structure, or any other structure capable of blocking airflow, and as used herein, "the blocking portion 42 is located on the rotation central axis of the fan 3" means a position where the rotation central axis of the fan 3 passes through the blocking portion 42, that is, the blocking portion 42 is located on the air inlet side of the fan 3 and is substantially opposite to the central area of the fan 3. The method comprises the steps of carrying out a first treatment on the surface of the
The edge part 43 is positioned at the radial outer side of the hole part 41, and the edge part 43 has the function of improving the structural strength of the air inlet plate 4 and playing a certain role in blocking fan noise;
the connecting portion 44 is located between the adjacent hole portions 41, and both ends of the connecting portion 44 are respectively connected to the blocking portion 42 and the edge portion 43, and the connecting portion 44 serves to divide the hole portions 41 and fix the blocking portion 42.
By analyzing the distribution of the sound field and the flow field of the fan, it can be known that the far-field propagation path of the noise source of the fan 3 propagates axially along the central axis of the fan 3, so that the noise around the fan 3 is weaker, and the noise in the area where the central axis of the fan 3 is located is stronger. Therefore, in the intake plate 4 according to the present utility model, the blocking portion 42 is provided at a position corresponding to the central region of the fan 3, and the hole portion 41 is provided radially outside the blocking portion 42, so that the blocking portion 42 can block the propagation of noise on the far-field propagation path of the noise source, and the hole portion 41 can release the region where the noise is weak while ensuring the intake air quantity.
Therefore, in the air inlet plate 4 provided by the utility model, the blocking part 42 is arranged on the noise far-field propagation path of the fan 3, so that noise transmission can be effectively blocked, the noise reduction effect is improved, the construction noise of engineering machinery is reduced, and the influence of the noise on an external receiver is reduced. In addition, in the air inlet plate 4, since the plurality of opening portions 41 are sequentially arranged in an annular matrix around the plugging portion 42, and each opening portion 41 is in a radial opening structure, the flow area of the air inlet can be maximized, the air inlet volume is improved, and the heat dissipation effect is improved.
In a preferred embodiment, the projection of the blocking portion 42 on the rotation plane of the fan 3 is in a central symmetrical pattern, and the center of the projection falls on the rotation center axis of the fan 3, so that the distance between the two farthest points of the outer edge of the blocking portion 42 is not less than half the radius of the fan 3.
For example, in the embodiment, as shown in fig. 1, the blocking portion 42 has a circular panel structure, that is, the contour of the outer edge of the blocking portion 42 is circular, and the radius of the blocking portion 42 is not less than half the radius of the fan 3. Alternatively, in a specific implementation, the blocking portion 42 is a square panel structure, that is, the contour of the outer edge of the blocking portion 42 is square, and the diagonal dimension of the blocking portion 42 is not less than half the diameter of the fan 3.
The provision of the hole 41 ensures that the power nacelle 1 has a certain air intake while ensuring noise reduction and external transmission, and can improve the heat dissipation effect of the power nacelle 1, so that the whole air intake plate 4 is not provided with the plugging portion 42, but the size of the plugging portion 42 is related to the radius size of the fan 3 according to data analysis, thereby obtaining a preferable size, not only ensuring that the plugging portion 42 can play a role in reducing noise, but also ensuring that a part of the area can be released to provide the hole 41, ensuring the air intake of the power nacelle 1, and playing a role in releasing the heat in the power nacelle.
However, in other embodiments, the blocking portion 42 may have other shapes, as long as the blocking portion 42 is located on the rotation center axis of the fan 3, and the maximum value of the dimension from the outer edge line of the blocking portion 42 to the center of the blocking portion 42 is not less than half the radius of the fan 3 。 The specific shape of the blocking portion 42 is not particularly limited in the present utility model, and those skilled in the art can make specific designs according to actual needs.
In a preferred embodiment, the sides of the plurality of opening portions 41 furthest from the center of the annular matrix are located in the same circular trajectory having a radius larger than the radius of the fan 3. That is, the line of the side of the opening portion 41 farthest from the center of the annular matrix may form a circle (i.e., a circular track), and the radius of the circular track is larger than that of the fan 3, so that the projection of the track formed by the line of the side of the opening portion 41 farthest from the center of the annular matrix on the rotation plane of the fan 3 can cover the fan 3, thereby providing the power nacelle 1 with a ventilation area as large as possible, and being beneficial to improving the cooling effect of the fan 3.
However, as shown in fig. 2, the sides of the plurality of openings 41 furthest from the center of the annular matrix may be located on the same square track, the four corners of the square track are arc angles, and the distance from the arc angle to the center of the square track is larger than the radius of the fan 3, which is suitable for the case when the fan 3 in the power nacelle 1 is relatively large.
In particular, when the sides of the plurality of hole portions 41 farthest from the center of the annular matrix are located on the same circular track, the radius of the circular track is preferably 1.15 to 1.25 times the radius of the fan 3. Most preferably, the radius of the circular track is 1.2 times the radius of the fan 3. Experiments prove that the radius of the circular track is 1.15-1.25 times of the radius of the fan 3, the size of the air inlet plate 4 can be guaranteed to be fully utilized, the sufficient edge part 43 can be provided for improving the structural strength of the air inlet plate 4, meanwhile, the requirement of air inlet quantity can be met to the maximum extent, and the power engine room 1 can be effectively cooled.
Similarly, when the sides of the plurality of opening portions 41 farthest from the center of the annular matrix are located on the same square locus, the distance from the circular arc angle of the square locus to the center of the annular matrix is preferably 1.15 to 1.25 times, and most preferably 1.2 times, the radius of the fan 3.
In specific implementation, the plugging part 42 is provided with a silencing device, so that the decibels of noise in the power cabin 1 transmitted to the outside of the cabin can be further reduced, and the influence on the surrounding environment is reduced.
When in specific implementation, the silencing device comprises silencing cotton; and/or the muffler device comprises a perforated muffler.
However, the present utility model is not limited thereto, and the muffler may be any other muffler as long as it can be mounted on the blocking portion 42 and can reduce the noise in the power cabin 1 from being transmitted to the outside of the cabin.
In particular, referring to fig. 1, the hole 41 has an arc-shaped hole structure. However, the present utility model is not limited thereto, and the hole portions 41 may be formed in other hole-like structures, as long as the hole portions 41 can be sequentially arranged in an annular matrix with the rotation center axis of the fan 3 as a center, and each hole portion 41 may be formed in a radial hole-like structure, and the specific shape of the hole portion 41 is not particularly limited thereto, and those skilled in the art may be specifically designed according to actual needs.
In particular, the connecting portion 44 is located between the adjacent hole portions 41, and both ends of the connecting portion 44 are connected to the blocking portion 42 and the edge portion 43, respectively. Since the hole portions 41 are provided in plurality so that the connection portions 44 are provided in plurality, the number of the connection portions 44 is identical to the number of the hole portions 41, and the plurality of connection portions 44 are sequentially arranged in an annular matrix centering on the rotation center axis of the fan 3.
In summary, the embodiment of the utility model also provides an engineering machine, which comprises a power cabin 1, wherein a fan 3 is arranged in the power cabin 1, a housing 2 is arranged outside the power cabin 1, and the part of the housing 2, which is positioned on the air inlet side of the fan 3, is provided with the air inlet plate 4.
In particular, referring to fig. 3, a radiator assembly 6 is generally disposed between the air intake plate 4 and the fan 3, so that an axial distance between the air intake plate 4 and the fan 3 is a preset distance, and the preset distance is greater than zero.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An air inlet plate for set up on the dustcoat (2) of the power cabin (1) of engineering machine tool, be provided with fan (3) in power cabin (1), the air inlet plate is located the air inlet side of fan (3), its characterized in that, the air inlet plate includes:
the fan comprises a plurality of opening parts (41), wherein the opening parts (41) are arranged in an annular matrix with the rotation central axis of the fan (3) as the center, and each opening part (41) is of a radial opening structure;
a blocking part (42) located on the rotation central axis of the fan (3);
an edge portion (43) located radially outward of the hole portion (41);
and a connecting part (44) located between the adjacent opening parts (41), wherein both ends of the connecting part (44) are respectively connected with the blocking part (42) and the edge part (43).
2. The air inlet plate according to claim 1, wherein the projection of the blocking portion (42) on the rotation plane of the fan (3) is in a center symmetrical pattern, the center of the blocking portion falls on the rotation center axis of the fan (3), and the distance between the farthest two points of the outer edge of the blocking portion (42) is not less than half the radius of the fan (3).
3. The air inlet plate according to claim 2, wherein the outer edge profile of the blocking portion (42) is circular, and the radius of the blocking portion (42) is not less than half the radius of the fan (3).
4. The air intake plate according to claim 2, wherein the outer edge profile of the blocking portion (42) is square, and the diagonal dimension of the blocking portion (42) is not smaller than half the diameter of the fan (3).
5. The air inlet plate according to claim 1, characterized in that the sides of the plurality of hole portions (41) furthest from the center of the annular matrix are located in the same circular trajectory, the radius of which is larger than the radius of the fan (3).
6. The air intake according to claim 5, characterized in that the radius of the circular trajectory is 1.15-1.25 times the radius of the fan (3).
7. The wind inlet plate according to claim 1, characterized in that the plugging portion (42) is provided with a sound damping device.
8. The air intake plate of claim 7, wherein the muffler device comprises muffler cotton;
and/or the muffler device comprises a perforated muffler.
9. A wind inlet plate according to claim 3, characterized in that the opening portion (41) has an arc-shaped hole structure.
10. Engineering machine, comprising a power cabin (1), wherein a fan (3) is arranged in the power cabin (1), and a housing (2) is arranged outside the power cabin (1), characterized in that the part of the housing (2) located on the air inlet side of the fan (3) is provided with an air inlet plate (4) according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320536067.1U CN219176433U (en) | 2023-03-13 | 2023-03-13 | Air inlet plate and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320536067.1U CN219176433U (en) | 2023-03-13 | 2023-03-13 | Air inlet plate and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219176433U true CN219176433U (en) | 2023-06-13 |
Family
ID=86669242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320536067.1U Active CN219176433U (en) | 2023-03-13 | 2023-03-13 | Air inlet plate and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219176433U (en) |
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2023
- 2023-03-13 CN CN202320536067.1U patent/CN219176433U/en active Active
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