WO2016147135A1 - Cabin pressurization system for agricultural machines with filtration system - Google Patents
Cabin pressurization system for agricultural machines with filtration system Download PDFInfo
- Publication number
- WO2016147135A1 WO2016147135A1 PCT/IB2016/051497 IB2016051497W WO2016147135A1 WO 2016147135 A1 WO2016147135 A1 WO 2016147135A1 IB 2016051497 W IB2016051497 W IB 2016051497W WO 2016147135 A1 WO2016147135 A1 WO 2016147135A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air inlet
- box
- external air
- hvac system
- cabin
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00378—Air-conditioning arrangements specially adapted for particular vehicles for tractor or load vehicle cabins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H3/00—Other air-treating devices
- B60H3/06—Filtering
- B60H3/0608—Filter arrangements in the air stream
- B60H3/0633—Filter arrangements in the air stream with provisions for regenerating or cleaning the filter element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H3/00—Other air-treating devices
- B60H3/06—Filtering
- B60H2003/0683—Filtering the quality of the filter or the air being checked
Definitions
- the present invention relates to a cabin air treatment apparatus for an agricultural machine, comprising at least an external air inlet, a filtration system connected downstream of the external air inlet, an HVAC system connected downstream of the filtration system, and a cabin air supply outlet connected downstream of the HVAC system, as well as a condensation system comprising a condenser connected to an evaporator of the HVAC system, and a fan associated to the condenser.
- Conventional air treatment apparatus for agricultural machines provide dust filtration, but aerosols and vapours can, in practice, still flow freely into the vehicle cabin.
- these known apparatus are inflexible, and it is difficult to use them to achieve satisfactory levels of pressurization in the cab, in particular if the latest standards are borne in mind.
- the invention therefore proposes an apparatus of the type defined initially, further comprising a hermetically closed box inside which the HVAC system is housed, said box having a levelling opening for placing the box into communication with a cabin of the agricultural machine to level a pressure inside the box with a pressure inside the cabin, wherein said at least one external air inlet comprises an external air inlet formed on the box,
- condensation system is arranged outside of said box
- the filtration system comprises:
- a filter for effecting a filtration of at least one among dust, aerosols and vapours, arranged at the external air inlet, and
- the HVAC system is therefore housed within a pressurized box, at the same pressure as that present within the cabin.
- the pressurization in the environment of the box surrounding the treatment apparatus prevents external contaminants from coming into contact with the various components of the HVAC system and with the fan. Consequently, it is unnecessary to have every individual component made so as to be protected from contaminant penetration; only the parts of the box communicating with the outside, particularly the air inlets with their filters, have to be configured for this purpose.
- FIG. 1 is a perspective view of a roof of an agricultural machine provided with a treatment apparatus according to the invention
- FIG. 2a is a plan view of the roof of Figure 1, with the cover removed;
- FIG. 2b is an enlarged plan view of a part of the roof with the cover removed;
- FIG. 3 is a plan view of the part shown in Figure 2, with the treatment apparatus also removed;
- FIG. 4 is a sectional view of a first external air inlet of the treatment apparatus
- FIG. 5 is a sectional view of a second external air inlet of the treatment apparatus
- Figures 6 to 10 are sectional views of the roof, showing different operating configurations of the treatment apparatus.
- Figures 1 and 2a show a roof R of an agricultural machine, while the letter C indicates an area to be occupied by the cabin of the agricultural machine, under the roof R.
- the cabin is required to be isolated from the external environment (at least in the higher safety classes).
- a box 1, hermetically closed by a cover 2, is placed on the roof R of the agricultural machine.
- Figure 2a shows the roof R with the box 1 from which the cover 2 has been removed; in particular, a gasket placed along a perimetric edge of the box is visible.
- the box 1 forms a compartment 3, in which a part of an air treatment apparatus 10 according to the invention is placed.
- Figures 1 and 2a further show a second cover 2' which covers a second compartment 3' (visible in Figures 6 to 9), inside of which another part of the air treatment apparatus is arranged.
- the air treatment apparatus essentially comprises a first and a possible second external air inlet 11, 16, formed through the walls of the box 1, through which inlets air is drawn from the external environment, a filtration system 20 connected downstream of the external air inlets 11, 16, an HVAC system 30 connected downstream of the filtration system 20, and a cabin air supply outlet 40 connected downstream of the HVAC system 30 (visible in Figure 3), through which treated air is supplied to the cabin C at a pressure greater than the pressure of the external environment.
- the air treatment apparatus further comprises a condensation system 70 arranged inside the second compartment 3' .
- the filtration system 20 comprises a filter 21 for effecting a filtration of at least one among dust, aerosols and vapours, arranged at the first air inlet 11, and an air inlet duct 23 being arranged directly connected downstream of the filter 21 and inside the box 1, and connecting the filter 21 to the HVAC system 30.
- An equivalent hole (not shown) is conventionally provided inside the cabin to adjust the pressurization of the environment inside the cabin.
- the filter 21 comprises a filter box 21a and a filter body 21b housed inside the filter box 21a.
- the filter body 21b is a filter chosen from among known filters capable of suppressing dust, aerosols and vapours, in other words a filter of category 4 according to European Standard EN 15695.
- An air inlet grille 21c is also mounted at the interface between the first air inlet 11 and the external environment, upstream of the filter body 21b. Sealing means 21d are interposed between the air inlet grille 21c and the air inlet of the filter box 21a.
- a shutter device 21e is placed at the air inlet grille 21c, this device being of the type biased towards a closed position and openable by a pressure downstream of the shutter device 21e lower than the pressure of the external environment.
- the shutter device 21e consists of a plurality of fins of elastic material, which bend towards the inside of the box 1, thereby opening the first air inlet 11, when the pressure downstream of the fins is lower than the pressure of the external environment.
- the filter box 21a is fixed to the box 1, and its outlet is connected to the air inlet duct 23.
- the duct 23 is provided with an air distribution valve 24, shown schematically in Figures 6 to 10, whereby the first air inlet 11 is in selectively enabled or disabled communication with the HVAC system 30, as explained subsequently.
- the air inlet 11 is further connected to a cleaning duct 25 connected to a fan of the condensation system 70 and provided for cleaning the filter 21, as will be explained subsequently.
- the valve 24 is configured to close/open the inlet to the HVAC system 25 and at the same time open/close the inlet to the fan of the condensation system 70.
- the filtration system 20 can further comprise a second filter 26 for effecting a mechanical filtration of the dust, placed at the second air inlet 16.
- the second filter 26 comprises a filter box 26a and a filter body
- the filter body 26b is a filter of category 2 according to European Standard EN 15695, and is therefore of a lower category than the first filter 21.
- An air inlet grille 26c is also mounted at the interface between the second air inlet 16 and the external environment, upstream of the filter body 26b. Sealing means 26d are interposed between the air inlet grille 26c and the air inlet of the filter box 26a.
- a shutter device 26e is placed at the air inlet grille 26c, this device being of the type biased towards a closed position and openable by a pressure downstream of the shutter device 26e lower than the pressure of the external environment.
- the shutter device 26e consists of a plurality of fins of elastic material, which bend towards the inside of the box 1, thereby opening the second air inlet 16, when the pressure downstream of the fins is lower than the pressure of the external environment.
- the filter box 26a is fixed to the box 1, and its air outlet is connected in a sealed way to a passage formed through a wall of the box 1, which, at its inner end, is connected in a sealed way via a duct 27 to the inlet of the HVAC system 30.
- the duct 27 is provided with an air distribution valve 28, shown schematically in Figures 6 to 10, whereby the first air inlet 16 is in selectively enabled or disabled communication with the HVAC system 30, as explained subsequently.
- the external air inlet 16 is also connected through the duct 27 and the air distribution valve 28 to the internal environment of the box 1 in order to keep the second filter 26 under pressure, as explained subsequently.
- the HVAC system 30 is of a conventional type; fresh and recycled air to be supplied to the cabin C is dehumidified and brought to the desired temperature by means of this system.
- the HVAC system 30 may comprise an air mixing plenum 31 , one or more fans 32 (visible in Figures 6 to 10), an evaporator 33, and a heater 34.
- the cabin C is also connected to the air mixing plenum 31 of the HVAC system 30 through an air recycling opening 50 formed on the box 1, visible in Figure 3.
- the box 1 also has a levelling opening 60, visible in Figure 3, for placing the internal space 3 of the box 1 into communication with the cabin C to level the pressure inside the box 1 with the pressure inside the cabin C.
- the condensation system 70 arranged inside the second compartment 3' of the roof R, conventionally comprises one or more condensers 71 and one or more fans 73 associated to the condensers 71.
- the condenser(s) 71 is/are conventionally connected to the evaporator(s) 33 of the HVAC system 30, within a cooling fluid circuit, and the fan(s) 73 serve to cool/condense the cooling fluid within the condenser(s) 71.
- the cleaning duct 25 is connected to an air inlet of the fan(s) 73.
- Figure 6 shows a cleaning configuration, which may be adopted when the apparatus is started up.
- the distribution valve 24 associated with the duct 23 connecting the first external air inlet 11 to the HVAC system 30 is positioned so as to disable the communication between the first external air inlet 11 and the HVAC system 30, and to enable the communication between the first external air inlet 11 and the cleaning duct 25.
- the distribution valve 28 associated with the duct 27 connecting the second external air inlet 16 to the HVAC system 30 is positioned so as to disable the communication between the second external air inlet 16 and the HVAC system 30.
- the unnumbered arrows depicted in Figure 6 represent the air path created by this configuration.
- the air entering from the air inlet 11, having been drawn in by the fan 73 of the condensation system 70 is used to remove any deposits within the first filter 21 and to discharge them to the outside through an air outlet of the condensation system 70.
- Figure 7 shows a configuration of initial pressurization of the apparatus.
- the distribution valve 24 associated with the duct 23 connecting the first external air inlet 11 to the HVAC system 30 is positioned so as to enable the communication between the first external air inlet 11 and the HVAC system 30, and to disable the communication between the first external air inlet 11 and the cleaning duct 25.
- the distribution valve 28 associated with the duct 27 connecting the second external air inlet 16 to the HVAC system 30 remains in the position which prevents communication between the second external air inlet 16 and the HVAC system 30.
- the unnumbered arrows depicted in Figure 7 represent the air path created by this configuration.
- the air entering from the air inlet 11, having been drawn in by the fan 32 of the HVAC system 30, passes through the first filter 21 and the HVAC system 30, and then through the cabin air supply outlet 40 to pressurize the cabin C.
- Figure 8 shows a configuration of steady-state pressurization of the apparatus.
- the distribution valve 24 associated with the duct 23 connecting the first external air inlet 11 to the HVAC system 30 remains in the position which allows communication between the first external air inlet 16 and the HVAC system 30, and the distribution valve 28 associated with the duct 27 connecting the second external air inlet 16 to the HVAC system 30 remains in the position which prevents communication between the second external air inlet 16 and the HVAC system 30.
- This position of the distribution valve 28 also allows communication between the second external air inlet 16 and the internal space 3 of the box 1.
- the unnumbered arrows depicted in Figure 8 represent the path of the air.
- the air which continues to enter the cabin C along the path indicated above with reference to Figure 7 also passes from the cabin C into the space 3 within the box 1, through the levelling opening 60, so that it also pressurizes the interior of the box 1, and passes from the space 3 into the duct 27 in communication with the space 3, so that it also pressurizes the second filter 26.
- Figure 9 shows a configuration of anomaly detection in the apparatus.
- the distribution valve 24 associated with the duct 23 connecting the first external air inlet 11 to the HVAC system 30 is positioned so as to disable the communication between the first external air inlet 11 and the HVAC system 30, and the distribution valve 28 associated with the duct 27 connecting the second external air inlet 16 to the HVAC system 30 is positioned so as to disable the communication between the second external air inlet 16 and the HVAC system 30.
- Figure 10 shows an operating configuration with the lower category filter associated with the second external air inlet. This configuration may be used as an alternative to the higher category operating configuration (shown in the preceding figures) when the operating conditions do not require a high degree of protection against contaminants.
- the distribution valve 24 associated with the duct 23 connecting the first external air inlet 11 to the HVAC system 30 is positioned so as to disable the communication between the first external air inlet 11 and the HVAC system 30, and the distribution valve 28 associated with the duct 27 connecting the second external air inlet 16 to the HVAC system 30 is positioned so as to enable the communication between the second external air inlet 16 and the HVAC system 30.
- the unnumbered arrows depicted in Figure 10 represent the air path created by this configuration.
- the air entering from the air inlet 16, having been drawn in by the fan 32 of the HVAC system passes through the second filter 26 and the HVAC system 30, and then through the cabin air supply outlet 40 to pressurize the cabin C.
- the air which continues to enter the cabin C also passes from the cabin C into the space 3 within the box 1, through the levelling opening 60, so that it also pressurizes the interior of the box 1.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air-Conditioning For Vehicles (AREA)
- Catching Or Destruction (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16714008.6A EP3271199B1 (en) | 2015-03-19 | 2016-03-17 | Cabin pressurization system for agricultural machines with filtration system |
US15/559,563 US11179993B2 (en) | 2015-03-19 | 2016-03-17 | Cabin pressurization system for agricultural machines with filtration system |
JP2017549080A JP6670845B2 (en) | 2015-03-19 | 2016-03-17 | Cabin pressurization system for agricultural machinery with filtration system |
ES16714008T ES2720614T3 (en) | 2015-03-19 | 2016-03-17 | Cab pressurization system for agricultural machines with filtration system |
BR112017019999-8A BR112017019999B1 (en) | 2015-03-19 | 2016-03-17 | CABIN AIR TREATMENT APPLIANCE FOR AN AGRICULTURAL MACHINE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITUB20150630 | 2015-03-19 | ||
IT102015000009102 | 2015-03-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016147135A1 true WO2016147135A1 (en) | 2016-09-22 |
Family
ID=53284463
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2016/051497 WO2016147135A1 (en) | 2015-03-19 | 2016-03-17 | Cabin pressurization system for agricultural machines with filtration system |
Country Status (6)
Country | Link |
---|---|
US (1) | US11179993B2 (en) |
EP (1) | EP3271199B1 (en) |
JP (1) | JP6670845B2 (en) |
BR (1) | BR112017019999B1 (en) |
ES (1) | ES2720614T3 (en) |
WO (1) | WO2016147135A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019130196A1 (en) * | 2017-12-28 | 2019-07-04 | Tecnocad Progetti S.P.A. | An air treatment system for a confined environment |
EP3424759B1 (en) * | 2017-07-06 | 2022-10-05 | CLAAS Selbstfahrende Erntemaschinen GmbH | Cabin canopy for an agricultural work vehicle |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10752094B2 (en) * | 2014-07-09 | 2020-08-25 | Cnh Industrial America Llc | Selective filtration level air treatment system |
EP3636467B1 (en) * | 2018-10-10 | 2023-02-22 | Kubota Corporation | Working vehicle |
CN113183891A (en) * | 2021-05-31 | 2021-07-30 | 东风商用车有限公司 | Toolbox assembly and commercial car driver's cabin with advance exhaust function |
US20240227498A1 (en) * | 2021-08-05 | 2024-07-11 | Breathesafe Pty Ltd | System and method for monitoring and controlling air quality in an enclosed space |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3555846A (en) * | 1968-12-13 | 1971-01-19 | Stolper Ind Inc | Air-conditioned vehicle cab |
US4467706A (en) * | 1982-03-08 | 1984-08-28 | Steiger Tractor, Inc. | Environmental control for tractor cab |
WO2015159248A1 (en) * | 2014-04-16 | 2015-10-22 | Denso Thermal Systems S.P.A. | Cabin pressurazation system for agricultural machines, having a filteration system |
Family Cites Families (7)
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US3626713A (en) * | 1970-04-23 | 1971-12-14 | Case Co J I | Vehicle cab air conditioning system |
US4531453A (en) * | 1983-05-16 | 1985-07-30 | Deere & Company | Atmosphere control arrangement for an operator enclosure |
US5184474A (en) * | 1991-11-15 | 1993-02-09 | Suetrak Air Conditioning Sales Corp. | Roof-mounted air conditioning system with built-in compressor |
JPH07101236A (en) * | 1993-10-05 | 1995-04-18 | Nippondenso Co Ltd | Air-conditioner for vehicle |
JPH08183326A (en) * | 1994-11-02 | 1996-07-16 | Nippondenso Co Ltd | Air conditioner for vehicle |
US9694651B2 (en) * | 2002-04-29 | 2017-07-04 | Bergstrom, Inc. | Vehicle air conditioning and heating system providing engine on and off operation |
US10752094B2 (en) * | 2014-07-09 | 2020-08-25 | Cnh Industrial America Llc | Selective filtration level air treatment system |
-
2016
- 2016-03-17 EP EP16714008.6A patent/EP3271199B1/en active Active
- 2016-03-17 JP JP2017549080A patent/JP6670845B2/en active Active
- 2016-03-17 BR BR112017019999-8A patent/BR112017019999B1/en active IP Right Grant
- 2016-03-17 US US15/559,563 patent/US11179993B2/en active Active
- 2016-03-17 WO PCT/IB2016/051497 patent/WO2016147135A1/en active Application Filing
- 2016-03-17 ES ES16714008T patent/ES2720614T3/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3555846A (en) * | 1968-12-13 | 1971-01-19 | Stolper Ind Inc | Air-conditioned vehicle cab |
US4467706A (en) * | 1982-03-08 | 1984-08-28 | Steiger Tractor, Inc. | Environmental control for tractor cab |
WO2015159248A1 (en) * | 2014-04-16 | 2015-10-22 | Denso Thermal Systems S.P.A. | Cabin pressurazation system for agricultural machines, having a filteration system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3424759B1 (en) * | 2017-07-06 | 2022-10-05 | CLAAS Selbstfahrende Erntemaschinen GmbH | Cabin canopy for an agricultural work vehicle |
WO2019130196A1 (en) * | 2017-12-28 | 2019-07-04 | Tecnocad Progetti S.P.A. | An air treatment system for a confined environment |
US11597260B2 (en) | 2017-12-28 | 2023-03-07 | Tecnocad Engineering & Design S.r.l. | Air treatment system for a confined environment |
Also Published As
Publication number | Publication date |
---|---|
EP3271199A1 (en) | 2018-01-24 |
BR112017019999B1 (en) | 2022-08-30 |
EP3271199B1 (en) | 2019-01-23 |
US11179993B2 (en) | 2021-11-23 |
JP6670845B2 (en) | 2020-03-25 |
BR112017019999A2 (en) | 2018-06-19 |
JP2018508416A (en) | 2018-03-29 |
ES2720614T3 (en) | 2019-07-23 |
US20180043746A1 (en) | 2018-02-15 |
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