Engine air pre-cleaning system
阅读说明:本技术 发动机空气预清洁系统 (Engine air pre-cleaning system ) 是由 艾伦·D·施德勒 加利克·W·赫布斯特 托德·E·范哈尔 于 2020-04-23 设计创作,主要内容包括:一种用于作业机械的空气管理组件,该空气管理组件具有冷却孔口,该冷却孔口被限定在板中;冷却风扇,该冷却风扇产生通过冷却孔口至冷却装置的冷却气流;至少一个固定滤网,所述至少一个固定滤网沿着进气孔口定位;以及第一挡板,该第一挡板至少部分地定位在冷却孔口与进气孔口之间;其中,第一挡板引导冷却气流部分地越过固定滤网以清除固定滤网上的碎屑。(An air management assembly for a work machine, the air management assembly having a cooling aperture defined in a plate; a cooling fan that generates a cooling airflow to the cooling device through the cooling aperture; at least one stationary screen positioned along the intake aperture; and a first baffle positioned at least partially between the cooling aperture and the intake aperture; wherein the first baffle directs the cooling air flow partially across the stationary screen to remove debris from the stationary screen.)
1. An air management assembly for a work machine, comprising:
a cooling aperture defined in a plate;
a cooling fan that generates a cooling airflow through the cooling aperture to a cooling device;
at least one stationary screen positioned along the intake aperture; and
a first baffle positioned at least partially between the cooling aperture and the intake aperture;
Wherein the first baffle directs the cooling airflow partially across the stationary screen to remove debris from the stationary screen.
2. The air management assembly of claim 1, further wherein said first baffle defines a first inlet and a first outlet, said first inlet being oriented in a substantially vertical direction.
3. The air management system of claim 2, further wherein said first outlet directs air toward said cooling aperture.
4. The air management system of claim 2, further wherein said stationary screen is positioned at least partially between said first inlet and said first outlet.
5. The air management system of claim 1, further comprising a rotating screen substantially covering said cooling apertures and an air scoop partially directing said cooling airflow into said cooling apertures.
6. The air management system of claim 5, further wherein said scoop has a cutout portion and at least a portion of said rotating screen is unobstructed from the ambient environment by said scoop in a horizontal direction.
7. The air management system of claim 5, further comprising a shutter assembly connected to said scoop.
8. The air management system of claim 7, further wherein said shutter assembly is pivotable about a pivot axis.
9. The air management system of claim 2, further comprising a second baffle, wherein said second baffle defines a second inlet and a second outlet, said second inlet being oriented in a substantially vertical direction.
10. An air management assembly for a work machine, comprising:
a cooling assembly having a cooling device and defining a cooling aperture, the cooling assembly configured to direct air from an ambient environment through the cooling aperture to cool the cooling device;
an air scoop assembly that directs air from the ambient environment through the cooling aperture;
a first baffle defined in the scoop assembly to direct air from the ambient environment into the cooling aperture along a first path; and
an air intake aperture defined in the scoop assembly at least partially along the first baffle;
Wherein air from the ambient environment enters the cooling apertures along the first path through the first baffle and via a second path that does not pass through the first baffle.
11. The air management assembly of claim 10 further comprising a screen over said intake aperture, wherein said first path is directed at least partially across said screen to remove debris from said screen as air flows along said first path toward said cooling aperture.
12. The air management system of claim 10, further wherein said scoop assembly further defines a second baffle that provides airflow from said ambient to said cooling aperture along a third path.
13. The air management system of claim 12, further comprising a second orifice having a second screen, wherein the second orifice and screen are positioned at least partially along the third path.
14. The air management system of claim 12, further wherein said first baffle has a first inlet and said second baffle has a second inlet, wherein said first inlet and said second inlet face in a substantially vertical direction.
15. The air management system of claim 14, further wherein said first baffle has a first outlet and said second baffle has a second outlet, said first outlet and said second outlet being defined in a pocket portion of said scoop assembly.
16. The air management system of claim 10, further wherein said scoop assembly has a louver assembly connected to said scoop assembly, wherein said louver assembly partially defines said second path.
17. The air management system of claim 16, further wherein the shutter assembly is pivotable about a pivot axis between a first orientation and a second orientation.
18. A work machine comprising:
a body;
at least one ground engaging mechanism;
an engine selectively powering the ground engaging mechanism, the engine fluidly connected to an engine intake aperture to provide air to the engine to assist combustion of fuel;
a radiator fluidly connected to at least one fluid system of the work machine to cool fluid used by the fluid system;
A cooling fan that draws air from the ambient environment through a cooling aperture and past the heat sink;
an air guide shroud assembly positioned at least partially around the cooling aperture and directing air from the ambient environment through the cooling aperture; and
a first baffle defined in the scoop assembly to direct air from the ambient environment into the cooling aperture along a first path;
wherein the engine intake aperture is defined in the scoop assembly at least partially along a first baffle plate;
further wherein the cooling fan draws air from the ambient environment through the scoop assembly along the first path through the first baffle and via a second path not through the first baffle.
19. The work machine of claim 18, further wherein the scoop assembly further defines a second baffle that provides airflow from the ambient to the cooling aperture along a third path,
further wherein the first baffle has a first inlet and the second baffle has a second inlet, wherein the first inlet and the second inlet face in a substantially vertical direction.
20. The work machine of claim 19, further wherein the scoop assembly has a louver assembly connected to the scoop assembly and positioned between the first and second baffles, wherein the louver assembly partially defines the second path;
further wherein the shutter assembly is pivotable about a pivot axis between a first orientation and a second orientation.
Technical Field
The present disclosure relates to an air management assembly and, more particularly, to an air management assembly having a baffle.
Background
Agricultural and construction vehicles are often powered by internal combustion engines. Typically, these vehicles are used in environments that are dirty and the air contains dust and other particulate matter or debris. For example, agricultural vehicles operate in environments where crop residue, as well as dust and particulate matter, are in the air. During operation, air is drawn into the engine compartment for cooling the engine and for efficient combustion in the internal combustion engine. In order to achieve complete combustion and reduce unnecessary wear on the engine, the air supply must be substantially free of particulate matter.
In a harvesting or construction environment, this typically requires an air filtration or cleaning system to make the air used by the vehicle for combustion or cooling completely free of debris. Even with conventional cleaning systems, particulate matter, dust and crop residue can clog or partially clog the air intake system. As a result, the system often needs to be cleaned at frequent intervals.
Disclosure of Invention
One embodiment is an air management assembly for a work machine, the air management assembly having a cooling aperture defined in a plate; a cooling fan that generates a cooling airflow to the cooling device through the cooling aperture; at least one stationary screen positioned along the intake aperture; and a first baffle positioned at least partially between the cooling aperture and the intake aperture; wherein the first baffle directs the cooling air flow partially across the stationary screen to remove debris from the stationary screen.
In one example of this embodiment, the first baffle defines a first inlet and a first outlet, the first inlet being oriented in a substantially vertical direction. In one aspect of this example, the first outlet directs air toward the cooling aperture. In another aspect of this example, the stationary screen is positioned at least partially between the first inlet and the first outlet.
Another example has a rotating screen substantially covering the cooling apertures and an air scoop that directs a flow of cooling air partially into the cooling apertures. In one aspect of this example, the scoop has a cutout portion, and at least a portion of the rotating screen is unobstructed from the ambient environment by the scoop in a horizontal direction. Another aspect of this example has a shutter assembly coupled to the scoop. Further, the shutter assembly is pivotable about a pivot axis.
Yet another example has a second baffle, wherein the second baffle defines a second inlet and a second outlet, the second inlet oriented in a substantially vertical direction.
Another embodiment is an air management assembly for a work machine having a cooling assembly having a cooling device and defining a cooling aperture, the cooling assembly configured to direct air from an ambient environment through the cooling aperture to cool the cooling device; an air scoop assembly that directs air from a surrounding environment through the cooling aperture; a first baffle defined in the scoop assembly to direct air from the ambient environment along a first path into the cooling aperture; and an air intake aperture defined in the scoop assembly at least partially along the first baffle; wherein air from the ambient environment enters the cooling apertures along a first path through the first baffle and via a second path that does not pass through the first baffle.
One example of this embodiment has a screen over the intake apertures, wherein the first path is directed at least partially across the screen to remove debris from the screen as the air flows along the first path toward the cooling apertures. In another example, the scoop assembly further defines a second baffle that provides airflow from the ambient to the cooling apertures along a third path. One aspect of this example has a second aperture having a second screen, wherein the second aperture and the screen are positioned at least partially along a third path. In another aspect of this example, the first baffle has a first inlet and the second baffle has a second inlet, wherein the first inlet and the second inlet face in a substantially vertical direction. In portions of this aspect, the first baffle has a first outlet and the second baffle has a second outlet, the first outlet and the second outlet being defined in the pocket portion of the scoop assembly.
In another example, the scoop assembly has a louver assembly coupled to the scoop assembly, wherein the louver assembly partially defines the second path. In one aspect of this example, the shutter assembly is pivotable about a pivot axis between a first orientation and a second orientation.
Another embodiment is a work machine having a body; at least one ground engaging mechanism; an engine selectively powering the ground engaging mechanism, the engine fluidly connected to the engine intake aperture to provide air to the engine to assist combustion of the fuel; a radiator fluidly connected to at least one fluid system of the work machine to cool a fluid used by the fluid system; a cooling fan that draws air from the ambient environment through the cooling apertures and over the heat sink; an air guide hood assembly positioned at least partially around the cooling aperture and directing air from an ambient environment through the cooling aperture; and a first baffle defined in the scoop assembly to direct air from the ambient environment along a first path into the cooling aperture; wherein the engine intake aperture is defined in the scoop assembly at least partially along the first baffle plate; further wherein the cooling fan draws air from the ambient environment through the scoop assembly along a first path through the first baffle and via a second path that does not pass through the first baffle.
In one example of this embodiment, the scoop assembly further defines a second baffle that provides airflow from the ambient to the cooling apertures along a third path. Wherein the first baffle has a first inlet and the second baffle has a second inlet, the first inlet and the second inlet facing substantially in a vertical direction. In one aspect of this example, the scoop assembly has a louver assembly coupled to the scoop assembly and positioned between the first baffle and the second baffle wherein the louver assembly partially defines the second path, and the louver assembly is pivotable about a pivot axis between the first orientation and the second orientation.
Drawings
The above-mentioned aspects of the present disclosure and the manner of attaining them will become more apparent and the disclosure itself will be better understood by reference to the following description of embodiments of the disclosure taken in conjunction with the accompanying drawings, wherein:
fig. 1 is a side view of an agricultural combine with an air scoop.
FIG. 2a is an elevated perspective view of an exploded scoop assembly.
Fig. 2b is a bottom perspective view of another embodiment of an scoop assembly separate from a combine harvester.
FIG. 3 is an elevated side view of the scoop assembly of FIG. 2b with the outer plate removed.
FIG. 4a is an elevated perspective view of another embodiment of an scoop assembly.
FIG. 4b is an elevated perspective view of the scoop assembly of FIG. 4a with the shutter assembly in a reduced configuration;
FIG. 5a is a front view of the scoop assembly of FIG. 3; and
FIG. 5b is a front view of a different embodiment of the scoop assembly with the outer plate removed.
Corresponding reference characters indicate corresponding parts throughout the several views.
Detailed Description
For the purposes of promoting an understanding of the principles of the disclosure, reference will now be made to the embodiments described herein and illustrated in the drawings, and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the disclosure is thereby intended, such alterations and further modifications in the illustrated devices and methods, and such further applications of the principles of the disclosure as illustrated therein being contemplated as would normally occur to one skilled in the art to which the disclosure relates.
Referring now to the drawings, and more particularly to fig. 1, a work vehicle in the form of an agricultural harvesting machine, such as an agricultural combine 10, is shown. The work vehicle may also be in the form of a different type of vehicle for use in dirty or debris-laden operating environments, such as an agricultural tractor, construction equipment, forestry equipment, and the like. The combine harvester 10 may include a support structure or body 12 having a ground engaging mechanism 14 extending from the body 12. Although the combine 10 is shown with wheels 14, it may also have ground engaging tracks, either full tracks or half tracks. The combine harvester 10 also has an intake housing 16 through which harvested crop material is fed into the combine harvester 10 for processing. Once processed, the harvested crop material is stored in a grain bin 18 in the combine harvester 10 and unloaded from the combine harvester 10 by an unloading auger 20. The operation of the combine harvester 10 is controlled by an operator cab 22.
Mechanical power for the combine harvester 10 is provided by an internal combustion engine housed in an engine compartment 24 in the rear of the combine harvester 12. A radiator in the engine compartment 24 is used to circulate cooling fluid through the internal combustion engine. The combine 10 has a plurality of body panels surrounding the sides and rear of the combine, including but not limited to a rear panel 30 adjacent the area of the engine compartment 24 where the radiator is located, a left side panel, a right side panel 32, and a radiator door panel 34, the radiator door panel 34 having an air scoop 40.
Referring now to fig. 2a and 2b, two embodiments of scoop assemblies 200 (fig. 2a), 201 (fig. 2b) are shown separate from combine harvester 10. Further, scoop assembly 200 is shown in exploded form with several components spaced apart from one another. Although the
Either
Although the
The
In one aspect of the present disclosure, the
In another aspect of the present disclosure, the
Although both the
Referring now to FIG. 3, a
Air and surrounding debris may also enter the
The size of the
Although the
Referring now to fig. 5a and 5b, a stationary screen 502 is shown positioned at least partially along the
In one aspect of the present disclosure,
While a portion of the air moving along the
In another aspect of the present disclosure, the
Referring now to fig. 4a and 4b, another embodiment of an
Referring now to FIG. 5b, yet another embodiment of an scoop assembly 500 is shown with the outer plate removed. In the embodiment of fig. 5b, the second baffle wall 506 may be at least partially curved, as compared to the
Further, in one non-exclusive embodiment shown in fig. 5b, a second screen 512 may be defined along the
In one aspect of the present disclosure, by utilizing baffles to define a first flow path across a stationary screen in combination with a larger second inlet, the cooling device may have sufficient airflow to cool the work machine while still providing sufficient turbulence across the stationary screen to clean debris from the screen. In other words, the cooling device requirements can be met by opening the air cowl assembly to the ambient environment. However, doing so reduces airflow across any stationary screens positioned therein. By implementing the use of baffles as explained in this disclosure, the cooling device may obtain sufficient air flow rate while the stationary screen is positioned along the baffles to ensure that there is sufficient air flow rate to remove debris formed therein.
Although the invention is shown as one type of combine, it can be used in other combine types, including conventional straw walker combines and hybrid combines with transverse threshing cylinders and rotating separators, as well as other types of work machines.
Although illustrative embodiments incorporating the principles of the disclosure have been described herein, the disclosure is not limited to these embodiments. On the contrary, this application is intended to cover any variations, uses, or adaptations of the disclosure using its general principles. Further, this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this disclosure pertains.
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