CA2465143C - Venting of a combine harvester - Google Patents
Venting of a combine harvester Download PDFInfo
- Publication number
- CA2465143C CA2465143C CA002465143A CA2465143A CA2465143C CA 2465143 C CA2465143 C CA 2465143C CA 002465143 A CA002465143 A CA 002465143A CA 2465143 A CA2465143 A CA 2465143A CA 2465143 C CA2465143 C CA 2465143C
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- Canada
- Prior art keywords
- straw
- chopper
- housing
- combine harvester
- opening
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 238000013022 venting Methods 0.000 title description 2
- 239000010902 straw Substances 0.000 claims abstract description 141
- 239000000463 material Substances 0.000 claims abstract description 27
- 230000007480 spreading Effects 0.000 claims abstract description 12
- 230000032258 transport Effects 0.000 claims description 14
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 239000013589 supplement Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 241000364027 Sinoe Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000003976 plant breeding Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
- A01D41/12—Details of combines
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/40—Arrangements of straw crushers or cutters
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Threshing Machine Elements (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
A combine harvester with a straw separating system and a rear hood with a bottom opening for discharge of the straw. A straw chopper is mounted at the rear hood for receiving the straw and lighter materials and has a rotor for chopping the straw and for generating a stream of air and chopped straw for spreading the chopped straw. At least one vent opening with upwardly and outwardly inclined louvers is provided at the rear hood, either in the hood itself or in the side walls to cause air from the sieve to move into and to discharge from the rear hood through the opening or allow air to be drawn in to satisfy the chopper requirements if the sieve airflow is lower. A fan can be provided to draw air from the opening to supplement the air stream from the chopper.
Description
VENTING OF A COMBINE HARVESTER
This invention relates to a combine harvester and to arrangements for reducing the pressure differential between the internal body of the combine harvester and the exterior.
BACKGROUND OF THE INVENTION
Combine development in recent years have put greater demands on the straw choppers and chaff spreaders. The main reasons are that larger combines and wider cutting widths are creating higher flows of straw and chaff; wider cutting widths create more demanding spreading widths; reduced tilling practices have put more demand on even spreading of both straw and chaff and that plant breeding has resulted in tougher straw, higher yields and more residue.
Large capacity combines have remained the same physical size as previous models. This means that a greater flow of grain, chaff and straw are moving through the same sized cavities. For this reason, greater mass flows of air are required to separate the chaff and grain on the sieves and in advanced straw chopping systems, a greater volume of air is being pressurized to spread the residue wider. This means that there must be a large exhaust I inlet area to balance the airflow so that the combine hood will not pressurize and effect grain separation.
As combines get larger and more compact the distance between the end of the sieve and the straw chopper is shrinking as this space is sacrificed for other options. The space between the chopper and the sieve end typicaNy is the area where air pressure is balanced. Reduction of and enclosing of this space has
This invention relates to a combine harvester and to arrangements for reducing the pressure differential between the internal body of the combine harvester and the exterior.
BACKGROUND OF THE INVENTION
Combine development in recent years have put greater demands on the straw choppers and chaff spreaders. The main reasons are that larger combines and wider cutting widths are creating higher flows of straw and chaff; wider cutting widths create more demanding spreading widths; reduced tilling practices have put more demand on even spreading of both straw and chaff and that plant breeding has resulted in tougher straw, higher yields and more residue.
Large capacity combines have remained the same physical size as previous models. This means that a greater flow of grain, chaff and straw are moving through the same sized cavities. For this reason, greater mass flows of air are required to separate the chaff and grain on the sieves and in advanced straw chopping systems, a greater volume of air is being pressurized to spread the residue wider. This means that there must be a large exhaust I inlet area to balance the airflow so that the combine hood will not pressurize and effect grain separation.
As combines get larger and more compact the distance between the end of the sieve and the straw chopper is shrinking as this space is sacrificed for other options. The space between the chopper and the sieve end typicaNy is the area where air pressure is balanced. Reduction of and enclosing of this space has
2 the potential to create problems with the airflow off of the sieves and therefore after the grain sample - leaving poorly separated grain or a dirty sample.
Typically the airflow off the sieves carries the chaff and light partials into a chaff spinner or straw chopper. The airflow trajectory needs to remain substantially rearward so it will not create vortices or non laminar flow across the sieves with the potential of creating a dirty sample.
The current John Deere STS combine is perhaps the most extreme example of a compact machine. In this case Deere has added a small opening in the sidewaN of the combine, nearly perpendicular to the end of the sieves and substantially immediately at the end of the sieves. Although in one condition this does relieve some air pressure, the placement of the opening interferes with the proper operation of the sieves in that the air from the sieves must make a substantially immediate 90-degree turn as it comes off of the sieves. This leads to vortices on the sieves and uttimately to areas of the sieves that contribute to a poor grain sample. Inversely, when the chopper is demanding more air than is being supplied by the sieve fan the air must be drawn in from a location near the sieves which again leads to vortices on the sieves and ultimately to areas of the sieves that contribute to a poor grain sample.
At this time no other solution is available which will allow the large amount of air exiting 1 drawn in the rear of the sieves to escape / enter the combine.
US Patent 4,412,549 (Rowland Hill) issued November 1983 and US
Patent 6,558,252 (Visagie) issued May 2003 both disclose air flow arrangements which improve separation at the sieve in the combine harvester.
Typically the airflow off the sieves carries the chaff and light partials into a chaff spinner or straw chopper. The airflow trajectory needs to remain substantially rearward so it will not create vortices or non laminar flow across the sieves with the potential of creating a dirty sample.
The current John Deere STS combine is perhaps the most extreme example of a compact machine. In this case Deere has added a small opening in the sidewaN of the combine, nearly perpendicular to the end of the sieves and substantially immediately at the end of the sieves. Although in one condition this does relieve some air pressure, the placement of the opening interferes with the proper operation of the sieves in that the air from the sieves must make a substantially immediate 90-degree turn as it comes off of the sieves. This leads to vortices on the sieves and uttimately to areas of the sieves that contribute to a poor grain sample. Inversely, when the chopper is demanding more air than is being supplied by the sieve fan the air must be drawn in from a location near the sieves which again leads to vortices on the sieves and ultimately to areas of the sieves that contribute to a poor grain sample.
At this time no other solution is available which will allow the large amount of air exiting 1 drawn in the rear of the sieves to escape / enter the combine.
US Patent 4,412,549 (Rowland Hill) issued November 1983 and US
Patent 6,558,252 (Visagie) issued May 2003 both disclose air flow arrangements which improve separation at the sieve in the combine harvester.
3 $UMMARY OF THE INVENTION
It is one object of the invention to provide an improved combine harvester and/or an apparatus which can be used with a combine harvester in which the air flow is not compromised, According to one aspect of the invention there is provided a combine harvester comprising:
a housing;
a straw separating system mounted within the housing for separating seed materials from straw for collection of the seed materiais and for transport of the straw rearwardly toward a rear of the housing for discharge;
the housing having a mar hood with walls defining a hollow interior, and separating the hollow interior from an exterior of the combine harvester, into which hollow interior straw from the separating system is fed and with a bottom opening in the rear hood for discharge of the straw from the hollow interior of the rear hood;
a straw chopper mounted at the rear hood for receiving the straw from the hollow interior of the rear hood;
the straw chopper having a generally cylindrical rotor with a hub mounted for rotation about a horizontal axis and carrying blades for chopping the straw and for generating an air stream for spreading the chopped straw;
the straw chopper having a chopper housing defining an inlet opening at the rotor for receiving straw moving downstream from the hollow interior of the
It is one object of the invention to provide an improved combine harvester and/or an apparatus which can be used with a combine harvester in which the air flow is not compromised, According to one aspect of the invention there is provided a combine harvester comprising:
a housing;
a straw separating system mounted within the housing for separating seed materials from straw for collection of the seed materiais and for transport of the straw rearwardly toward a rear of the housing for discharge;
the housing having a mar hood with walls defining a hollow interior, and separating the hollow interior from an exterior of the combine harvester, into which hollow interior straw from the separating system is fed and with a bottom opening in the rear hood for discharge of the straw from the hollow interior of the rear hood;
a straw chopper mounted at the rear hood for receiving the straw from the hollow interior of the rear hood;
the straw chopper having a generally cylindrical rotor with a hub mounted for rotation about a horizontal axis and carrying blades for chopping the straw and for generating an air stream for spreading the chopped straw;
the straw chopper having a chopper housing defining an inlet opening at the rotor for receiving straw moving downstream from the hollow interior of the
4 rear hood and an outlet opening angularly spaced around the rotor from the inlet opening for discharge of the chopped straw in the air stream;
and at least one vent opening arranged to allow air to pass between the hollow Interior of the rear hood at a position upstream of the inlet opening and the exterior through said at least one opening.
In one arrangement the at least one vent opening includes an opening located in a wall of the rear hood adjacent the straw chopper.
Preferably the at least one vent opening includes a first and a second vent opening each arranged in a respective side wall of the rear hood adjacent the straw chopper.
In another arrangement, the chopper housing includes housing walls attached to the rear hood and depending therefrom and wherein the at least one vent opening includes an opening located in a respective one of the chopper housing walls.
Preferably the chopper housing walls include two side walls and wherein there is a respective one of the vent openings in each side wall.
Preferably the chopper housing walls each include a mounting flange at its top edge for attachment to the bottom of the hood and wherein the at least one vent opening includes a plurality of horizontal slots at spaced positions directly below the mounting flange.
Preferably the chopper housing includes a rear wall extending transversely across the rear hood and wherein there is provided a vent opening in the rear wall.
Preferably the vent opening in the rear wail include a plurality of horizontal siots.
Preferably the at least one vent opening includes a plurality of louvers.
Preferably the louvers are arranged such that they are inclined upwardly and outwardly so as to be angled opposite to the downward direction of flow of the straw.
Preferably the there is provided a pneumatic fan having a duct connected to the at least one vent opening for driving air through the at least one vent opening.
Preferably the fan has an outlet duct which transports the air from the fan to be mixed with the air stream from the rotor.
According to a second aspect of the invention there is provided an apparatus for mounting on a combine harvester having: a housing; a straw separating system mounted within the housing for separating seed materiais from straw for collection of the seed materiais and for transport of the straw rearwardly toward a rear of the housing for discharge; the housing having a rear hood with a bottom opening in the hood for discharge of the straw and the lighter materials;
the apparatus comprising a straw chopper having a housing arranged to be mounted at the rear hood for receiving the straw, the housing having walls for attachment to the rear hood so as to depend therefrom;
the straw chopper having a generally cylindrical rotor with a hub mounted for rotation about a horizontal axis and carrying blades for chopping the straw and for generating a an air stream for spreading the chopped straw;
the chopper housing defining an inlet opening at the rotor for receiving straw moving downstream from the hollow interior of the rear hood and an outlet opening angularly spaced around the rotor from the inlet opening for discharge of the chopped straw in the air stream;
and at least one vent opening in at least one of the walls of the chopper housing arranged to allow air to pass between the hollow interior of the rear hood at a position upstream of the inlet opening and the exterior through said at least one opening.
According to a third aspect of the invention there is provided a combine harvester comprising:
a housing;
a straw separating system mounted within the housing for separating seed materials from straw for collection of the seed materials and for transport of the straw toward the outlet of the housing for discharge;
the housing having a rear hood with walls defining a hollow interior, and separating the hollow interior from an exterior of the combine harvester, into which hollow interior straw from the separating system Is fed and with a bottom opening in the rear hood for discharge of the straw from the hollow interior of the rear hood;
a straw chopper mounted at the hood for receiving the straw for chopping the straw and for generating an air stream for spreading the chopped straw;
the straw chopper having a transverse hub rotatable about a transverse axis and carrying a plurality of axially spaced blades for rotation with the hub about the axis so as to define an imaginary vertical plane parallel to and in front of the axis which is the forwardmost plane which tips of the blades reach;
the straw chopper having a chopper housing defining an inlet opening at the rotor for receiving straw moving downstream from the hollow interior of the rear hood and an outlet opening angularly spaced around the rotor from the inlet opening for discharge of the chopped straw in the air stream;
and at least one vent opening having at least a portion thereof rearward of said imaginary vertical plane and arranged to allow air to pass between the hollow interior of the rear hood at a position upstream of the inlet opening and the exterior through said at least one opening.
According to a fourth aspect of the invention there is provided a combine harvester comprising:
a housing;
a straw separating system mounted within the housing for separating seed materials from straw for collection of the seed materials and for transport of the straw rearwardly toward a rear of the housing for discharge;
the housing having side walls defining a hollow interior, and separating the hollow interior from an exterior of the combine harvester, into which hollow interior straw from the separating system is fed and with an opening for discharge of the straw from the hollow interior;
a straw chopper for reoeiving the straw from the hollow interior;
the straw chopper having a generally cylindrical rotor with a hub mounted for rotation about a horizontal axis and carrying blades for chopping the straw and for generating an air stream for spreading the chopped straw;
the straw chopper defining an inlet opening at the rotor for receiving straw moving downstream from the hollow interior of the rear hood and an outlet opening angularly spaced around the rotor from the inlet opening for discharge of the chopped straw in the air stream;
and at least one vent opening in at least one of the side welis of the housing arranged to allow air to pass between the hollow interior at a position upstream of the inlet opening and the exterior through said at least one opening.
BRIEF DESGRIPTION OF THE DRAWINGS
Figure 1 is a schematic side elevational view of a combine harvester and straw chopper according to the present invention.
Figure 2 is a schematic side elevational view similar to that of Figure 1 showing the intemal components in phantom.
Figure 3 is an isometric view of the straw chopper and combine of Figure 1.
Figure 4 is an isometric of the chopper alone and including a rear vent cover.
Figure 5 is a similar Isometric view showing an arrangement with vent openings both in the rear wall and side walls of the chopper housing, with the rear vent cover removed.
Figure 6 is a top plan view of the chopper of Figure 3 showing a duct and fan arrangement for transporting the vented air, Figure 7 is an isometric view similar to that of Figure 3 showing an arrangement in which the vent opening are in the side walls of the rear hood.
Figure 8 is a side elevational view of an arrangement using an internal chopper in which the vent openings are arranged in the side walls of the chopper.
DETAILED DESCRIP_TION.
A combine harvester shown in Figure 1 comprises a combine harvester housing 10 mounted on ground wheels 11 for transport over a ground in conventional manner. The combine harvester is shown only schematically sinoe many different designs are available and well known to one skilled in the art.
The combine harvester includes a straw separation section generally indicated at 12 and a sieve section generally indicated at 13. Again these elements are conventional and provide arrangements for separation of the straw from the crop material allowing the seed material to fall through to the sieve at which seeds are separated from the seed material leaving the chaff or other lighter materials on top of the sieve to be carried away from the sieve by an air flow through the sieve as is well known.
The rear of the combine is provided is a rear hood 14 into which air from the straw separation system and the sieves enters and into which straw is discharged rearwardly for and is guided by guide wall 14A and by operable guide panel 148 in the hood section 14 into a chopper and spreader generally indicated at 15.
This arrangement is well known and commercial products are readily available from Redekop Manufacturing and other manufacturers of straw choppers of this type.
The chaff from the rear end of the sieve as best shown in Figure 2 at
and at least one vent opening arranged to allow air to pass between the hollow Interior of the rear hood at a position upstream of the inlet opening and the exterior through said at least one opening.
In one arrangement the at least one vent opening includes an opening located in a wall of the rear hood adjacent the straw chopper.
Preferably the at least one vent opening includes a first and a second vent opening each arranged in a respective side wall of the rear hood adjacent the straw chopper.
In another arrangement, the chopper housing includes housing walls attached to the rear hood and depending therefrom and wherein the at least one vent opening includes an opening located in a respective one of the chopper housing walls.
Preferably the chopper housing walls include two side walls and wherein there is a respective one of the vent openings in each side wall.
Preferably the chopper housing walls each include a mounting flange at its top edge for attachment to the bottom of the hood and wherein the at least one vent opening includes a plurality of horizontal slots at spaced positions directly below the mounting flange.
Preferably the chopper housing includes a rear wall extending transversely across the rear hood and wherein there is provided a vent opening in the rear wall.
Preferably the vent opening in the rear wail include a plurality of horizontal siots.
Preferably the at least one vent opening includes a plurality of louvers.
Preferably the louvers are arranged such that they are inclined upwardly and outwardly so as to be angled opposite to the downward direction of flow of the straw.
Preferably the there is provided a pneumatic fan having a duct connected to the at least one vent opening for driving air through the at least one vent opening.
Preferably the fan has an outlet duct which transports the air from the fan to be mixed with the air stream from the rotor.
According to a second aspect of the invention there is provided an apparatus for mounting on a combine harvester having: a housing; a straw separating system mounted within the housing for separating seed materiais from straw for collection of the seed materiais and for transport of the straw rearwardly toward a rear of the housing for discharge; the housing having a rear hood with a bottom opening in the hood for discharge of the straw and the lighter materials;
the apparatus comprising a straw chopper having a housing arranged to be mounted at the rear hood for receiving the straw, the housing having walls for attachment to the rear hood so as to depend therefrom;
the straw chopper having a generally cylindrical rotor with a hub mounted for rotation about a horizontal axis and carrying blades for chopping the straw and for generating a an air stream for spreading the chopped straw;
the chopper housing defining an inlet opening at the rotor for receiving straw moving downstream from the hollow interior of the rear hood and an outlet opening angularly spaced around the rotor from the inlet opening for discharge of the chopped straw in the air stream;
and at least one vent opening in at least one of the walls of the chopper housing arranged to allow air to pass between the hollow interior of the rear hood at a position upstream of the inlet opening and the exterior through said at least one opening.
According to a third aspect of the invention there is provided a combine harvester comprising:
a housing;
a straw separating system mounted within the housing for separating seed materials from straw for collection of the seed materials and for transport of the straw toward the outlet of the housing for discharge;
the housing having a rear hood with walls defining a hollow interior, and separating the hollow interior from an exterior of the combine harvester, into which hollow interior straw from the separating system Is fed and with a bottom opening in the rear hood for discharge of the straw from the hollow interior of the rear hood;
a straw chopper mounted at the hood for receiving the straw for chopping the straw and for generating an air stream for spreading the chopped straw;
the straw chopper having a transverse hub rotatable about a transverse axis and carrying a plurality of axially spaced blades for rotation with the hub about the axis so as to define an imaginary vertical plane parallel to and in front of the axis which is the forwardmost plane which tips of the blades reach;
the straw chopper having a chopper housing defining an inlet opening at the rotor for receiving straw moving downstream from the hollow interior of the rear hood and an outlet opening angularly spaced around the rotor from the inlet opening for discharge of the chopped straw in the air stream;
and at least one vent opening having at least a portion thereof rearward of said imaginary vertical plane and arranged to allow air to pass between the hollow interior of the rear hood at a position upstream of the inlet opening and the exterior through said at least one opening.
According to a fourth aspect of the invention there is provided a combine harvester comprising:
a housing;
a straw separating system mounted within the housing for separating seed materials from straw for collection of the seed materials and for transport of the straw rearwardly toward a rear of the housing for discharge;
the housing having side walls defining a hollow interior, and separating the hollow interior from an exterior of the combine harvester, into which hollow interior straw from the separating system is fed and with an opening for discharge of the straw from the hollow interior;
a straw chopper for reoeiving the straw from the hollow interior;
the straw chopper having a generally cylindrical rotor with a hub mounted for rotation about a horizontal axis and carrying blades for chopping the straw and for generating an air stream for spreading the chopped straw;
the straw chopper defining an inlet opening at the rotor for receiving straw moving downstream from the hollow interior of the rear hood and an outlet opening angularly spaced around the rotor from the inlet opening for discharge of the chopped straw in the air stream;
and at least one vent opening in at least one of the side welis of the housing arranged to allow air to pass between the hollow interior at a position upstream of the inlet opening and the exterior through said at least one opening.
BRIEF DESGRIPTION OF THE DRAWINGS
Figure 1 is a schematic side elevational view of a combine harvester and straw chopper according to the present invention.
Figure 2 is a schematic side elevational view similar to that of Figure 1 showing the intemal components in phantom.
Figure 3 is an isometric view of the straw chopper and combine of Figure 1.
Figure 4 is an isometric of the chopper alone and including a rear vent cover.
Figure 5 is a similar Isometric view showing an arrangement with vent openings both in the rear wall and side walls of the chopper housing, with the rear vent cover removed.
Figure 6 is a top plan view of the chopper of Figure 3 showing a duct and fan arrangement for transporting the vented air, Figure 7 is an isometric view similar to that of Figure 3 showing an arrangement in which the vent opening are in the side walls of the rear hood.
Figure 8 is a side elevational view of an arrangement using an internal chopper in which the vent openings are arranged in the side walls of the chopper.
DETAILED DESCRIP_TION.
A combine harvester shown in Figure 1 comprises a combine harvester housing 10 mounted on ground wheels 11 for transport over a ground in conventional manner. The combine harvester is shown only schematically sinoe many different designs are available and well known to one skilled in the art.
The combine harvester includes a straw separation section generally indicated at 12 and a sieve section generally indicated at 13. Again these elements are conventional and provide arrangements for separation of the straw from the crop material allowing the seed material to fall through to the sieve at which seeds are separated from the seed material leaving the chaff or other lighter materials on top of the sieve to be carried away from the sieve by an air flow through the sieve as is well known.
The rear of the combine is provided is a rear hood 14 into which air from the straw separation system and the sieves enters and into which straw is discharged rearwardly for and is guided by guide wall 14A and by operable guide panel 148 in the hood section 14 into a chopper and spreader generally indicated at 15.
This arrangement is well known and commercial products are readily available from Redekop Manufacturing and other manufacturers of straw choppers of this type.
The chaff from the rear end of the sieve as best shown in Figure 2 at
5 13 is carried by a movable pan 16 and a chaff control door 16A into the inlet 32 of the chopper 14.
An example of a chopper of this type is disclosed in US Patents
An example of a chopper of this type is disclosed in US Patents
6,478,674 issued Nov 12th 2002, 5,482,508 issued Jan 9th 1996 and 5,232,405 issued August 3d 1993 all of Leo Redekop, and US application 2002/0004417 10 published Jan 4D"' 2002 the disclosures of which are incorporated herein by reference.
The chopper has a horizontal upper mounting flange 25 which attaches to a corresponding bottom flange of the hood of the combine. This forms a rectangular open mouth at the top of the chopper which corresponds in shape to the rectangular lower opening of the hood so that all material discharging from the guide walls 14A and 14B falls into the upper part of the housing and enters the inlet 32 of the chopper.
The chopper comprises a housing attached to the top mounting flange and depending therefrom and defined by side wails 26 at opposite sides of the hood and generally co-planar therewith. Bridging the side walls 26 is provided a bottom wall 22 and a top wall 21 which extend across the width of the chopper and form a generally cylindrical containing surfaoe for receiving the chopper rotor 20.
The rotor 20 includes a hub 28 with a plurality of radially extending flails or blades 29 carried on the rotor for rotation therewith around the axis of the rotor which is arranged across the width of the chopper.
Many different arrangements and construction of blades can be used as are well known to one skilled in the art and described in the above patents of Redekop. In most cases the chopper includes stationary blades 30 mounted on the bottom wall 22 at a position partway around the bottom wall. The stationary blades are arranged in a row at spaced positions across the width of the chopper so as to co-operate with the rotating blades of the hub in a chopping action. The spacing between the blades can be selected in acoordance wrth the type of rotating blades as Is well known to one skilled in the art.
The top wall 21 and the bottom wall 22 define at the upper part of the housing the inlet 32 into which the straw can be guided from the hood and from the sieve 13. The chaff guide plate 16 and control door 16A carry the chaff fnom the end of the sieve over the space between the end of the sieve and the front edge 36 of the bottom wall 22 so as to carry the chaff in the air stream from the sieve over the plate and into the opening 32.
In the configuration shown, the top wall 21 includes a generally vertical portion 37 which extends downwardly from the top flange 25 to the top of the rotor.
The top wall 21 further includes a curved section 38 which extends around the top of the rotor to a rear edge 39 which defines the top edge of the rear discharge opening 40 through which the material exits in the stream of air and chopped materials generated by the rotation of the rotor within the housing.
A taifboard 41 is pivotally mounted on the rear part of the housing at a pivot mount 41A. The tailboard comprises a base plate 42 with a series of fins 43 on the underside shaped and arranged so that material exiting from the discharge opening 40 is thrown up against the underside of the tailboard and impacts the fins causing a change in direction of the material on the tailboard so as to spread the material using the momentum generated in the stream from the rotor. The angle of the tailboard can be adjusted around the pivot 41A by positioning a spring loaded pin. The load of the tailboard is counteracted with a gas cylinder 44.
Rear vents 115 and side vents 116 are provided in the chopper housing. In Figures 3 and 4 the rear vents 115 are covered by an inclined rear cover panel 125 which is removable. In this configuration the vents form a series of horizontal parallel slots in the side wall wi#h the first immediately at the top mounting flange. The vents consist of louvers that are angled outwards and upwards, as best shown in the isometric views, so as to be opposite to the downwards direction of the straw flow path. This is necessary to eliminate straw from plugging the vent holes.
The vents can be provided solely in the side walls of the chopper housing or can be provided solely in the rear walf or in both. The vents are above and forward of the inlet 32 so as to act on the air in advance of the materials entering the inlet of the chopper. As shown in Figure 2, the straw chopper has a transverse hub rotatable about a transverse axis and carrying a plurality of axially spaced blades for rotation with the hub about the axis so as to define an imaginary vertical plane marked at IP
parallel to and in front of the axis A which is the forwardmost plane which tips of the blades 29 reach.
The side vent openings 116 have at least a portion thereof rearward of the imaginary vertical plane IP and arranged to allow air to pass between the rear hood and the exterior through the at least one vent opening. Thus each slot defining the vent openings includes a part of the slot which is rearward of the plane IP and part in front. The slots at the top are longer so as to include a longer part rearward.
The slots are symmetrical about a center line so that they gradually become shorter from the uppermost slot at the flange 25 to the bottom slot blow the top of the rotor, The vents are located above the chopper rotor and particularly above the inlet thereto so that the air which is not drawn into the inlet because of pressurization in the hood can escape through the vents. Inversely, if the chopper is drawing more air than is being supplied by the sieves, air will be drawn in, through the vents, thereby not limiting the chopper's performance and also not drawing additional air from the sieves and grain with it.
It is important to note that the vents do not need to be in the chopper housing. The vents can be placed in the hood of the combine substantially close to the chopper or immediately above the mounting flange of the chopper as shown at vents 136 in Figure 7. The air should be vented I drawn-in as close as possible to the chopper so that the air moving rearwardly from the rear end of the straw separation system and rearwardly from the rear edge of the sieve assembly carries the chaff and straw to the chopper assembly.
The vents also may be partly in the hood and partly in the chopper. As shown the vents are preferably louvers but there could be many possible shapes such as round like a cheese grater. The important part of the construction is that there is a void to aiiow' air either In or out, with some mechanism to stop the straw from coming out or it plugging in the void. The holes are preferably oriented perpendicular to the direction of the straw flow so as to better control the escape of air without allowing straw to enter the vent with the potential of plugging.
As shown in Figure 6 the vents in the side wall are connected to the inlet duct 145 of a pneumatic fan 150 mounted to draw air out of the combine hood thereby reducing the pressurized effect. The outlet of the fan provides pressurized air to a duct 151 which increases in width to a slot 152 at the discharge 40 to assist in providing an increased air flow from the discharge over the fins of the tailboard for spreading. Referenee is made to co-pending Appliaetion Serial Number not yet known (Attorney Docket Number 83416-702) which is based on Canadian Application 2,440,082 filed September gth 2003, which discloses the use of a fan to generate air flow boost to be supplied to the chopper and the intake duct shown in Figure 1 can be used with such a fan to provide additionai air for the discharge of the chopper.
As shown in Figure 8 an altemative conventional arrangement well know to one skilled in the art is shown where an internal chopper 200 is provided in the combine body above the sieve 13 and in front of the hood 14. This arrangement has inlet openings corresponding to the inlet openings 201 described herein located in relation to the chopper and constructed as previously described. .
Since various modifications can be made in my invention as herein above described, and many apparently wideiy different embodiments of same made within the spirit and scope of the claims without department from such spirit and scope, it Is Intended that all matter oontained in the accompanying specification shall be interpreted as illustrative only and not in a limiting sense.
The chopper has a horizontal upper mounting flange 25 which attaches to a corresponding bottom flange of the hood of the combine. This forms a rectangular open mouth at the top of the chopper which corresponds in shape to the rectangular lower opening of the hood so that all material discharging from the guide walls 14A and 14B falls into the upper part of the housing and enters the inlet 32 of the chopper.
The chopper comprises a housing attached to the top mounting flange and depending therefrom and defined by side wails 26 at opposite sides of the hood and generally co-planar therewith. Bridging the side walls 26 is provided a bottom wall 22 and a top wall 21 which extend across the width of the chopper and form a generally cylindrical containing surfaoe for receiving the chopper rotor 20.
The rotor 20 includes a hub 28 with a plurality of radially extending flails or blades 29 carried on the rotor for rotation therewith around the axis of the rotor which is arranged across the width of the chopper.
Many different arrangements and construction of blades can be used as are well known to one skilled in the art and described in the above patents of Redekop. In most cases the chopper includes stationary blades 30 mounted on the bottom wall 22 at a position partway around the bottom wall. The stationary blades are arranged in a row at spaced positions across the width of the chopper so as to co-operate with the rotating blades of the hub in a chopping action. The spacing between the blades can be selected in acoordance wrth the type of rotating blades as Is well known to one skilled in the art.
The top wall 21 and the bottom wall 22 define at the upper part of the housing the inlet 32 into which the straw can be guided from the hood and from the sieve 13. The chaff guide plate 16 and control door 16A carry the chaff fnom the end of the sieve over the space between the end of the sieve and the front edge 36 of the bottom wall 22 so as to carry the chaff in the air stream from the sieve over the plate and into the opening 32.
In the configuration shown, the top wall 21 includes a generally vertical portion 37 which extends downwardly from the top flange 25 to the top of the rotor.
The top wall 21 further includes a curved section 38 which extends around the top of the rotor to a rear edge 39 which defines the top edge of the rear discharge opening 40 through which the material exits in the stream of air and chopped materials generated by the rotation of the rotor within the housing.
A taifboard 41 is pivotally mounted on the rear part of the housing at a pivot mount 41A. The tailboard comprises a base plate 42 with a series of fins 43 on the underside shaped and arranged so that material exiting from the discharge opening 40 is thrown up against the underside of the tailboard and impacts the fins causing a change in direction of the material on the tailboard so as to spread the material using the momentum generated in the stream from the rotor. The angle of the tailboard can be adjusted around the pivot 41A by positioning a spring loaded pin. The load of the tailboard is counteracted with a gas cylinder 44.
Rear vents 115 and side vents 116 are provided in the chopper housing. In Figures 3 and 4 the rear vents 115 are covered by an inclined rear cover panel 125 which is removable. In this configuration the vents form a series of horizontal parallel slots in the side wall wi#h the first immediately at the top mounting flange. The vents consist of louvers that are angled outwards and upwards, as best shown in the isometric views, so as to be opposite to the downwards direction of the straw flow path. This is necessary to eliminate straw from plugging the vent holes.
The vents can be provided solely in the side walls of the chopper housing or can be provided solely in the rear walf or in both. The vents are above and forward of the inlet 32 so as to act on the air in advance of the materials entering the inlet of the chopper. As shown in Figure 2, the straw chopper has a transverse hub rotatable about a transverse axis and carrying a plurality of axially spaced blades for rotation with the hub about the axis so as to define an imaginary vertical plane marked at IP
parallel to and in front of the axis A which is the forwardmost plane which tips of the blades 29 reach.
The side vent openings 116 have at least a portion thereof rearward of the imaginary vertical plane IP and arranged to allow air to pass between the rear hood and the exterior through the at least one vent opening. Thus each slot defining the vent openings includes a part of the slot which is rearward of the plane IP and part in front. The slots at the top are longer so as to include a longer part rearward.
The slots are symmetrical about a center line so that they gradually become shorter from the uppermost slot at the flange 25 to the bottom slot blow the top of the rotor, The vents are located above the chopper rotor and particularly above the inlet thereto so that the air which is not drawn into the inlet because of pressurization in the hood can escape through the vents. Inversely, if the chopper is drawing more air than is being supplied by the sieves, air will be drawn in, through the vents, thereby not limiting the chopper's performance and also not drawing additional air from the sieves and grain with it.
It is important to note that the vents do not need to be in the chopper housing. The vents can be placed in the hood of the combine substantially close to the chopper or immediately above the mounting flange of the chopper as shown at vents 136 in Figure 7. The air should be vented I drawn-in as close as possible to the chopper so that the air moving rearwardly from the rear end of the straw separation system and rearwardly from the rear edge of the sieve assembly carries the chaff and straw to the chopper assembly.
The vents also may be partly in the hood and partly in the chopper. As shown the vents are preferably louvers but there could be many possible shapes such as round like a cheese grater. The important part of the construction is that there is a void to aiiow' air either In or out, with some mechanism to stop the straw from coming out or it plugging in the void. The holes are preferably oriented perpendicular to the direction of the straw flow so as to better control the escape of air without allowing straw to enter the vent with the potential of plugging.
As shown in Figure 6 the vents in the side wall are connected to the inlet duct 145 of a pneumatic fan 150 mounted to draw air out of the combine hood thereby reducing the pressurized effect. The outlet of the fan provides pressurized air to a duct 151 which increases in width to a slot 152 at the discharge 40 to assist in providing an increased air flow from the discharge over the fins of the tailboard for spreading. Referenee is made to co-pending Appliaetion Serial Number not yet known (Attorney Docket Number 83416-702) which is based on Canadian Application 2,440,082 filed September gth 2003, which discloses the use of a fan to generate air flow boost to be supplied to the chopper and the intake duct shown in Figure 1 can be used with such a fan to provide additionai air for the discharge of the chopper.
As shown in Figure 8 an altemative conventional arrangement well know to one skilled in the art is shown where an internal chopper 200 is provided in the combine body above the sieve 13 and in front of the hood 14. This arrangement has inlet openings corresponding to the inlet openings 201 described herein located in relation to the chopper and constructed as previously described. .
Since various modifications can be made in my invention as herein above described, and many apparently wideiy different embodiments of same made within the spirit and scope of the claims without department from such spirit and scope, it Is Intended that all matter oontained in the accompanying specification shall be interpreted as illustrative only and not in a limiting sense.
Claims (40)
1. A combine harvester comprising:
a housing;
a straw separating system mounted within the housing for separating seed materials from straw for collection of the seed materials and for transport of the straw rearwardly toward a rear of the housing for discharge;
the housing having a rear hood with walls defining a hollow interior, and separating the hollow interior from an exterior of the combine harvester, into which hollow interior straw from the separating system is fed and with a bottom opening in the rear hood for discharge of the straw from the hollow interior of the rear hood;
a straw chopper mounted at the rear hood for receiving the straw from the hollow interior of the rear hood;
the straw chopper having a generally cylindrical rotor with a hub mounted for rotation about a horizontal axis and carrying blades for chopping the straw and for generating an air stream for spreading the chopped straw;
the straw chopper having a chopper housing defining an inlet opening at the rotor for receiving straw moving downstream from the hollow interior of the rear hood and an outlet opening angularly spaced around the rotor from the inlet opening for discharge of the chopped straw in the air stream;
and at least one vent opening arranged to allow air to pass between the hollow interior of the rear hood at a position upstream of the inlet opening and the exterior through said at least one opening.
a housing;
a straw separating system mounted within the housing for separating seed materials from straw for collection of the seed materials and for transport of the straw rearwardly toward a rear of the housing for discharge;
the housing having a rear hood with walls defining a hollow interior, and separating the hollow interior from an exterior of the combine harvester, into which hollow interior straw from the separating system is fed and with a bottom opening in the rear hood for discharge of the straw from the hollow interior of the rear hood;
a straw chopper mounted at the rear hood for receiving the straw from the hollow interior of the rear hood;
the straw chopper having a generally cylindrical rotor with a hub mounted for rotation about a horizontal axis and carrying blades for chopping the straw and for generating an air stream for spreading the chopped straw;
the straw chopper having a chopper housing defining an inlet opening at the rotor for receiving straw moving downstream from the hollow interior of the rear hood and an outlet opening angularly spaced around the rotor from the inlet opening for discharge of the chopped straw in the air stream;
and at least one vent opening arranged to allow air to pass between the hollow interior of the rear hood at a position upstream of the inlet opening and the exterior through said at least one opening.
2. The combine harvester according to Claim 1 wherein the at least one vent opening includes an opening located in a wall of the rear hood adjacent the straw chopper.
3. The combine harvester according to Claim 1 wherein the at least one vent opening includes a first and a second vent opening each arranged in a respective side wall of the rear hood adjacent the straw chopper.
4. The combine harvester according to Claim 1 wherein the chopper housing includes housing walls attached to the rear hood and depending therefrom and wherein the at least one vent opening includes an opening located in a respective one of the chopper housing walls.
5. The combine harvester according to Claim 4 wherein the chopper housing walls include two side walls and wherein there is a respective one of the vent openings in each side wall.
6. The combine harvester according to Claim 4 or 5 wherein the chopper housing walls each include a mounting flange at its top edge for attachment to the bottom of the hood and wherein the at least one vent opening includes a plurality of horizontal slots at spaced positions directly below the mounting flange.
7. The combine harvester according to any one of Claims 1 to 6 wherein the chopper housing includes a rear wall extending transversely across the rear hood and wherein there is provided a vent opening in the rear wall.
8. The combine harvester according to Claim 7 wherein the vent opening in the rear wall include a plurality of horizontal slots.
9. The combine harvester according to any one of Claims 1 to 6 wherein the at least one vent opening includes a plurality of louvers.
10. The combine harvester according to Claim 9 wherein the louvers are arranged such that they are inclined upwardly and outwardly so as to be angled opposite to the downward direction of flow of the straw.
11. The combine harvester according to any one of Claims 1 to 10 wherein the there is provided a pneumatic fan having a duct connected to the at least one vent opening for driving air through the at least one vent opening.
12. The combine harvester according to Claim 11 wherein the fan has an outlet duct which transports the air from the fan to be mixed with the air stream from the rotor.
13. Apparatus for mounting on a combine harvester having: a housing; a straw separating system mounted within the housing for separating seed materials from straw for collection of the seed materials and for transport of the straw rearwardly toward a rear of the housing for discharge; the housing having a rear hood with a bottom opening in the hood for discharge of the straw and the lighter materials;
the apparatus comprising a straw chopper having a housing arranged to be mounted at the rear hood for receiving the straw, the housing having walls for attachment to the rear hood so as to depend therefrom;
the straw chopper having a generally cylindrical rotor with a hub mounted for rotation about a horizontal axis and carrying blades for chopping the straw and for generating a an air stream for spreading the chopped straw;
the chopper housing defining an inlet opening at the rotor for receiving straw moving downstream from the hollow interior of the rear hood and an outlet opening angularly spaced around the rotor from the inlet opening for discharge of the chopped straw in the air stream;
and at least one vent opening in at least one of the walls of the chopper housing arranged to allow air to pass between the hollow interior of the rear hood at a position upstream of the inlet opening and the exterior through said at least one opening.
the apparatus comprising a straw chopper having a housing arranged to be mounted at the rear hood for receiving the straw, the housing having walls for attachment to the rear hood so as to depend therefrom;
the straw chopper having a generally cylindrical rotor with a hub mounted for rotation about a horizontal axis and carrying blades for chopping the straw and for generating a an air stream for spreading the chopped straw;
the chopper housing defining an inlet opening at the rotor for receiving straw moving downstream from the hollow interior of the rear hood and an outlet opening angularly spaced around the rotor from the inlet opening for discharge of the chopped straw in the air stream;
and at least one vent opening in at least one of the walls of the chopper housing arranged to allow air to pass between the hollow interior of the rear hood at a position upstream of the inlet opening and the exterior through said at least one opening.
14. The apparatus according to Claim 13 wherein the chopper housing includes two side walls and wherein the at least one vent opening includes a vent opening in each side wall.
15. The apparatus according to Claim 14 wherein the side walls each include a mounting flange at its top edge for attachment to the bottom of the rear hood and wherein the vent openings include a plurality of horizontal slots at spaced positions directly below the mounting flange.
16. The apparatus according to any one of Claims 13 to 15 wherein the chopper housing includes a rear wall extending transversely across the rear hood and wherein there is a vent opening in the rear wall.
17. The apparatus according to Claim 16 wherein the vent opening in the rear wall includes a plurality of horizontal slots.
18. The apparatus according to any one of Claims 13 to 17 wherein the at least one vent opening includes a plurality of louvers.
19. The apparatus according to Claim 18 wherein the louvers are arranged such that they are inclined upwardly and outwardly so as to be angled opposite to the downward direction of flow of the straw.
20. The apparatus according to any one of Claims 13 to 19 further including a pneumatic fan having a duct connected to the at least one vent opening for driving air through the at least one vent opening.
21. The apparatus according to Claim 20 further including an outlet duct of the fan arranged to transport the air from the fan to be mixed with the air stream from the rotor.
22. A combine harvester comprising:
a housing;
a straw separating system mounted within the housing for separating seed materials from straw for collection of the seed materials and for transport of the straw toward the outlet of the housing for discharge;
the housing having a rear hood with wells defining a hollow interior, and separating the hollow interior from an exterior of the combine harvester, into which hollow interior straw from the separating system is fed and with a bottom opening in the rear hood for discharge of the straw from the hollow interior of the rear hood;
a straw chopper mounted at the hood for receiving the straw for chopping the straw and for generating an air stream for spreading the chopped straw;
the straw chopper having a transverse hub rotatable about a transverse axis and carrying a plurality of axially spaced blades for rotation with the hub about the axis so as to define an imaginary vertical plane parallel to and in front of the axis which is the forwardmost plane which tips of the blades reach;
the straw chopper having a chopper housing defining an inlet opening at the rotor for receiving straw moving downstream from the hollow interior of the rear hood and an outlet opening angularly spaced around the rotor from the inlet opening for discharge of the chopped straw in the air stream;
and at least one vent opening having at least a portion thereof rearward of said imaginary vertical plane and arranged to allow air to pass between the hollow interior of the rear hood at a position upstream of the inlet opening and the exterior through said at least one opening.
a housing;
a straw separating system mounted within the housing for separating seed materials from straw for collection of the seed materials and for transport of the straw toward the outlet of the housing for discharge;
the housing having a rear hood with wells defining a hollow interior, and separating the hollow interior from an exterior of the combine harvester, into which hollow interior straw from the separating system is fed and with a bottom opening in the rear hood for discharge of the straw from the hollow interior of the rear hood;
a straw chopper mounted at the hood for receiving the straw for chopping the straw and for generating an air stream for spreading the chopped straw;
the straw chopper having a transverse hub rotatable about a transverse axis and carrying a plurality of axially spaced blades for rotation with the hub about the axis so as to define an imaginary vertical plane parallel to and in front of the axis which is the forwardmost plane which tips of the blades reach;
the straw chopper having a chopper housing defining an inlet opening at the rotor for receiving straw moving downstream from the hollow interior of the rear hood and an outlet opening angularly spaced around the rotor from the inlet opening for discharge of the chopped straw in the air stream;
and at least one vent opening having at least a portion thereof rearward of said imaginary vertical plane and arranged to allow air to pass between the hollow interior of the rear hood at a position upstream of the inlet opening and the exterior through said at least one opening.
23. The combine harvester according to Claim 22 wherein the at least one vent opening is located in a wall of the rear hood adjacent the straw chopper.
24. The combine harvester according to Claim 22 wherein the at least one vent opening includes a first and a second vent opening each arranged in a respective side wall of the rear hood adjacent the straw chopper.
25. The combine harvester according to Claim 22 wherein the chopper housing Includes housing walls attached to the rear hood and depending therefrom and wherein the at least one vent opening is located in a respective one of the chopper housing walls.
26. The combine harvester according to Claim 25 wherein the chopper housing walls include two side walls and wherein there is a respective one of the vent openings in each side wall.
27. The combine harvester according to Claim 26 wherein each side wall includes a mounting flange at its top edge for attachment to the bottom of the hood and wherein the at least one vent opening includes a plurality of horizontal slots at spaced positions directly below the mounting flange.
28. The combine harvester according to Claim 22 wherein the chopper housing includes a rear wall extending transversely across the hood and wherein the at least one of the vent openings includes a vent opening in the rear wall.
29. The combine harvester according to Claim 28 wherein the vent opening in the rear wall includes a plurality of horizontal slots.
30. The combine harvester according to Claim 22 wherein the at least one vent opening includes a plurality of louvers.
31. The combine harvester according to Claim 30 wherein the louvers are arranged such that they are inclined upwardly and outwardly so as to be angled opposite to the downward direction of flow of the straw.
32. The combine harvester according to Claim 22 wherein there is provided a pneumatic fan having a duct connected to the at least one vent opening for driving air through the at least one vent opening.
33. The combine harvester according to Claim 32 wherein the fan has an outlet duct which transports the air from the fan to be mixed with the air stream from the rotor.
34. The combine harvester according to Claim 22 wherein the at least one vent opening includes a plurality of horizontal slots and wherein at least some of the slots have at least a part of their length rearward of the imaginary plane.
35. A combine harvester comprising:
a housing;
a straw separating system mounted within the housing for separating seed materials from straw for collection of the seed materials and for transport of the straw rearwardly toward a rear of the housing for discharge;
the housing having side walls defining a hollow interior, and separating the hollow interior from an exterior of the combine harvester, into which hollow interior straw from the separating system is fed and with an opening for discharge of the straw from the hollow interior;
a straw chopper for receiving the straw from the hollow interior;
the straw chopper having a generally cylindrical rotor with a hub mounted for rotation about a horizontal axis and carrying blades for chopping the straw and for generating an air stream for spreading the chopped straw;
the straw chopper defining an inlet opening at the rotor for receiving straw moving downstream from the hollow interior of the rear hood and an outlet opening angularly spaced around the rotor from the inlet opening for discharge of the chopped straw in the air stream;
and at least one vent opening in at least one of the side walls of the housing arranged to allow air to pass between the hollow interior at a position upstream of the inlet opening and the exterior through said at least one opening.
a housing;
a straw separating system mounted within the housing for separating seed materials from straw for collection of the seed materials and for transport of the straw rearwardly toward a rear of the housing for discharge;
the housing having side walls defining a hollow interior, and separating the hollow interior from an exterior of the combine harvester, into which hollow interior straw from the separating system is fed and with an opening for discharge of the straw from the hollow interior;
a straw chopper for receiving the straw from the hollow interior;
the straw chopper having a generally cylindrical rotor with a hub mounted for rotation about a horizontal axis and carrying blades for chopping the straw and for generating an air stream for spreading the chopped straw;
the straw chopper defining an inlet opening at the rotor for receiving straw moving downstream from the hollow interior of the rear hood and an outlet opening angularly spaced around the rotor from the inlet opening for discharge of the chopped straw in the air stream;
and at least one vent opening in at least one of the side walls of the housing arranged to allow air to pass between the hollow interior at a position upstream of the inlet opening and the exterior through said at least one opening.
36. The combine harvester according to Claim 35 wherein there is a respective one of the vent opening in each side wall.
37. The combine harvester according to Claim 35 or 30 wherein the at least one vent opening includes a plurality of louvers.
38. The combine harvester according to Claim 37 wherein the louvers are arranged such that they are inclined upwardly and outwardly.
39. The combine harvester according to any one of Claims 35 to 38 wherein the there is provided a pneumatic fan having a duct connected to the at least one vent opening for driving air through the at least one vent opening.
40. The combine harvester according to Claim 39 wherein the fan has an outlet duct which transports the air from the fan to be mixed with the air stream from the rotor.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002465143A CA2465143C (en) | 2004-04-23 | 2004-04-23 | Venting of a combine harvester |
| EA200601923A EA009633B1 (en) | 2004-04-23 | 2005-04-19 | Venting of a combine harvester |
| PCT/CA2005/000596 WO2005102026A1 (en) | 2004-04-23 | 2005-04-19 | Venting of a combine harvester |
| UAA200611104A UA84912C2 (en) | 2004-04-23 | 2005-04-19 | Air-supplying system for combine harvester |
| AU2005235449A AU2005235449A1 (en) | 2004-04-23 | 2005-04-19 | Venting of a combine harvester |
| EP05735613A EP1755371A4 (en) | 2004-04-23 | 2005-04-19 | Venting of a combine harvester |
| BRPI0510125-5A BRPI0510125A (en) | 2004-04-23 | 2005-04-19 | combine harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002465143A CA2465143C (en) | 2004-04-23 | 2004-04-23 | Venting of a combine harvester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2465143A1 CA2465143A1 (en) | 2005-10-23 |
| CA2465143C true CA2465143C (en) | 2009-04-28 |
Family
ID=35196643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002465143A Expired - Lifetime CA2465143C (en) | 2004-04-23 | 2004-04-23 | Venting of a combine harvester |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1755371A4 (en) |
| AU (1) | AU2005235449A1 (en) |
| BR (1) | BRPI0510125A (en) |
| CA (1) | CA2465143C (en) |
| EA (1) | EA009633B1 (en) |
| UA (1) | UA84912C2 (en) |
| WO (1) | WO2005102026A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016124576A1 (en) * | 2016-12-16 | 2018-06-21 | Claas Selbstfahrende Erntemaschinen Gmbh | Modular drum house |
| US10986777B2 (en) * | 2018-04-25 | 2021-04-27 | Cnh Industrial America Llc | Vented side member for an agricultural vehicle |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3165133A (en) * | 1962-01-04 | 1965-01-12 | Int Harvester Co | Protective structure for crop treating apparatus |
| US4056107A (en) * | 1976-04-26 | 1977-11-01 | Sperry Rand Corporation | Crop residue deflector means |
| SE411414B (en) * | 1977-12-16 | 1979-12-27 | Gronbergs Gjuteri & Kvarnfab | DEVICE FOR SCREEN MACHINES FOR HARVEST PANTS |
| US4412549A (en) | 1981-10-29 | 1983-11-01 | Sperry Corporation | Combine harvester with improved cleaning |
| US4637406A (en) * | 1984-08-09 | 1987-01-20 | Hesston Corporation | Chaff and straw spreading attachment for combines |
| US5232405A (en) | 1992-01-07 | 1993-08-03 | Redekop Leo L | Apparatus for chopping and discharging straw from a combine harvester |
| US5482508A (en) | 1995-03-31 | 1996-01-09 | Redekop; Leo L. | Apparatus for chopping and discharging straw from a combine harvester |
| SE504681C2 (en) * | 1995-09-06 | 1997-04-07 | Rekordverken Ab | Cutting machine at combine with a fan for extra air |
| SE512815C2 (en) * | 1999-07-06 | 2000-05-15 | Rekordverken Ab | Combine harvester with straw chopper and bait feed |
| US6478674B2 (en) | 1999-11-24 | 2002-11-12 | Leo Redekop | Apparatus including twisted blades passing between stationary blades for chopping and discharging straw from a combine harvester |
| GB2365312A (en) | 2000-08-01 | 2002-02-20 | Claas Selbstfahr Erntemasch | Grain cleaning apparatus for combines |
-
2004
- 2004-04-23 CA CA002465143A patent/CA2465143C/en not_active Expired - Lifetime
-
2005
- 2005-04-19 WO PCT/CA2005/000596 patent/WO2005102026A1/en not_active Application Discontinuation
- 2005-04-19 EP EP05735613A patent/EP1755371A4/en not_active Withdrawn
- 2005-04-19 BR BRPI0510125-5A patent/BRPI0510125A/en not_active Application Discontinuation
- 2005-04-19 AU AU2005235449A patent/AU2005235449A1/en not_active Abandoned
- 2005-04-19 EA EA200601923A patent/EA009633B1/en not_active IP Right Cessation
- 2005-04-19 UA UAA200611104A patent/UA84912C2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EA200601923A1 (en) | 2007-04-27 |
| WO2005102026A1 (en) | 2005-11-03 |
| CA2465143A1 (en) | 2005-10-23 |
| EP1755371A1 (en) | 2007-02-28 |
| EP1755371A4 (en) | 2008-01-23 |
| AU2005235449A1 (en) | 2005-11-03 |
| UA84912C2 (en) | 2008-12-10 |
| EA009633B1 (en) | 2008-02-28 |
| BRPI0510125A (en) | 2007-06-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20240423 |