Patent Application
20190003109
In 2010 an estimated 16,800 reported U.S. non-confirmed or confirmed home structure fires involving clothes dryers or washing machines (including combination washer/dryer) resulted in 51 civilian deaths, 380 civilian injuries, and $236 million in direct property damage.
A clothes dryer works by forcing hot moist air through a turning drum. Wet clothes placed in the drum are then dried by moving hot air. It is possible for a full load of wet clothes to contain as much as one and a half gallons of water. Lint, consisting mostly of small fibers from the clothes and debris in or on the clothes, is created as the clothes tumble in the drum.
While much of the lint is trapped by the dryer's filter, it is also carried through the vent system along with the moist air. Lint is a highly combustible material that can accumulate in the dryer vent. Accumulated lint leads to reduced airflow and can pose a potential fire hazard.
When the warm, moist dryer air reaches an unheated space such as a garage, attic or the outside atmosphere, colder temperatures cause the relative humid air to condense back to liquid form of water within the exhaust pipe. This water can drain back into the clothes dryer or settle in a low point of a dryer vent hose causing blockage and overheating of the dryer, which can result in fire.
Clothes dryer vent pipes are mostly installed with little consideration to problems of condensate water flowing down from the dryer vent exhaust pipe into the clothes dryer or filling up the flexible dryer vent hose at its low point with water. The low point can unintentionally create a water trap which blocks the airflow from the dryer causing the dryer to overheat, loose efficiency or cause a fire.
Another issue with typical clothes dryers is that their filters generally catch less than 80% of the lint produced, this means that over many drying cycles huge amounts of lint can accumulate in the dryer exhaust pipe system. Blending the excess lint from the dryer with the condensate water falling from the exhaust pipe can produce a water/lint blend or a slurry, which can expand inside the exhaust pipe. Over time this slurry can solidify into a firm mass creating even more blockage problems.
Additionally, since most of the dryer vent piping is hidden inside a wall, and many dryer vent systems suffer from poor installation standards and/or the use of improper duct material plus the lack of maintenance it is estimated that there are thousands of house fires annually associated with clothes dryers.
Another issue with current clothes dryer exhaust systems is the in ability to separate the excess lint from the condensate water before they blend together within the exhaust system or being unable to efficiently dispose the lint and water separately.
Still another problem with existing dryer vent systems is the inability for a homeowner to monitor the internal conditions and temperatures of the dryer exhaust system, many problems such as dryer damage or house fires could be reduced if a homeowner could monitor the airflow performance in a simple and convenient way.
According to U.S. Customer product Safety Commission research, a 75% blocked dryer exhaust duct elevates the exhaust air temperature of the average electric clothes dryer 89% more than its normal temperature with an unblocked duct.
Laundry rooms are located further from outside walls resulting in longer concealed runs. Given the tightness of modern homes, proper handling of clothes dryer exhaust has become even more critical than it was in older homes that had more breathability. This invention solves these problems and more.
This apparatus includes an enlarged double lint filter to supplement the clothes dryer lint screen. The double filter is easily accessible for removing and replacing. Once removed it can be easily cleaned for the next dryer cycle. Its enlarged double screen feature provides an unrestricted airflow passage through the filter, allowing better dryer efficiency.
This apparatus removes downward flowing condensate water from the exhaust system before it can blend with lint or flow into the clothes dryer. The condensate water is filtered with an easily accessible and removable filter to prevent containments when disposed of into a waste drain. The condensate water drainage system includes water traps to prevent entry of toxic sewer gasses.
The unique combination of embodiments prevents the blending of upward flowing lint with downward flowing condensate water and removes each individually to separate destinations outside the exhaust system.
The easy removable double airflow filter provides more filtering surface resulting in a lint free airflow and a lint free outlet vent pipe for a cleaner environment. Only after the lint has been removed, is the airflow directed to a chosen exit destination. Additionally, the lint does not come in contact with condensate water.
The lower open compartment of the housing provides unique storage for the dryer flexible vent, keeping it up off the floor and well organized for maximum efficiency and for multiple connections and configurations.
The unique condensate water removal system prevents the condensate water from blending with the lint free airflow.
The compact design allows the housing to be installed within a typical 2×4 inch stud wall behind a typical clothes dryer and organize the dryer vent hose to be neatly stored in the lower compartment of the housing.
Another feature of the apparatus are the clear removable viewing windows for interior visual inspections while the system is operational without comprising the air tightness of the upper sealed compartment.
Additionally, the viewing windows can be easily removed to reveal access openings for internal maintenance and diagnostic testing. The access opening and viewing windows are positioned on the housing for easy access and use.
The upper compartment of the apparatus is substantially water tight and air tight to provide a sealed system for high efficiency operations.
An additional feature of the apparatus is an airflow monitor/alarm, strategically located for easy reading and maximum operational efficiency. The monitor indicates to the operator if there are issues with the airflow quality and alert the operator if conditions are critical. Located within the housing is an airtight diverter to direct the filtered airflow to a desired location outside or optionally to an inside destination, and simultaneously direct the falling condensate water away to a different exit port for disposal in a sealed system.
The filters, windows, access openings and airflow monitor represent the operational components and are strategically positioned in the operational zone above the dryer top wall for easy access by the operator of the dryer.
The present invention relates to clothes dryer exhaust systems, and more particularly to filtering lint particulate from the clothes dryer's exhaust airflow and separating from falling condensate to prevent blending into a sludge.
The airflow filter intercepts the lint particulate from the exhaust airflow before the exhaust airflow comes in contact with the falling condensate. By removing the lint particulate from the exhaust airflow before the airflow reaches the falling condensate, the risk of lint and condensate blending into a sludge is eliminated.
After the lint has been filtered from the exhaust airflow, the clean exhaust airflow is directed past and separated from the falling condensate.
The exhaust airflow is removed from the gaseous fluid exhaust system through one of the outlet ports.
After separation, the airflow is directed out of the airflow exhaust system through a chosen outlet port and the condensate is directed out through a separate and dedicated condensate port to be disposed of.
In addition the falling condensate water is prevented from entering the clothes dryer and causing damage or from entering the clothes dryer flexible vent pipe and causing blockage.
Prior art does not address the problem of falling condensate and excess lint from a clothes dryer within a gaseous fluid exhaust system and their separate disposal. Generally, clothes dryers do not filter 100% of the lint particulate produced during a typical drying cycle. Additionally, a typical load of clothes cycling through a clothes dryer will produce over 1.5 gallon of water, which is directed upward into the dryer exhaust vent pipe in the form of a high moisture content water vapor.
As the water vapor continues through the exhaust pipe under certain conditions the water vapor turns to condensate and flows back down to the clothes dryer. Additionally, the condensate can mix with the lint particulate creating a slurry like blend which can cause blockage in the dryer vent.
A blockage in the dryer vent can cause the dryer to underperform or over heat and possibly cause a fire.
The present invention comprises new and novel solutions combined to address the need to prevent condensate from entering a clothes dryer and preventing lint intrusion into a dryer exhaust system and for preventing the blending of condensate and lint particulates and directing their separate disposal.
This invention has particular application to homes and other dwellings allowing architects, builders and contractors greater leeway in designing more efficient utility room combinations. Clothes dryers may be positioned for best use of floor space while providing a higher degree of fire safety within the homes.
In accordance with the present invention, the unrestricting airflow filter, condensate and lint particulate separator apparatus within a housing of a gaseous fluid exhaust system provides multiple unique features within a clothes dryer's exhaust system.
A primary object of the invention is to remove excess lint particulate from the exhaust airflow by filtration before the rising exhaust airflow comes in contact with falling condensate.
Another primary object of the invention is to filter and remove the lint particulate originating from a clothes dryer's exhaust airflow, to prevent lint particulate from blending with falling condensate, which can form within a gaseous fluid exhaust system, and to prevent the falling condensate from entering the clothes dryer, and to dispose the falling condensate out of the gaseous fluid exhaust system to a designated drain.
The filtered exhaust airflow, continues through the non-restricting airflow channel and is separated from the falling condensate within a diverter and is directed to one of two exit outlets as selected by the clothes dryer operator.
The exhaust airflow is directed to a selected outlet within a diverter apparatus by blocking exhaust airflow to the unselected outlet and directing the exhaust airflow to exit through the selected outlet.
The airflow diverter additionally channels exhaust airflow upward past falling condensate creating a separation of the upward flowing exhaust airflow and the downward flowing condensate within the shared confinement of the diverter and exhaust outlet.
It is another object of the invention to provide an operational zone located in the upper compartment of the housing for placement of operational components comprising; access openings, viewing windows, an airflow diverter, and an airflow monitor/alarm.
It is another object of the invention to provide access openings for entry into the housing for cleaning and maintenance, additionally, the access openings are sealable with removable clear viewing panels that serves as observation windows for monitoring conditions during normal operations. The access openings and viewing windows are located within the operational zone for efficient operations and accessibility.
It is another primary object of the invention to provide an enlarged removable double screen exhaust unrestricting airflow filter with a folding design to fit into a filter pocket within the housing at a downward angle to provide additional filter surface.
It is another object of the invention to segregate the exhaust airflow from falling condensate, to direct the exhaust airflow to one of two designated exhaust outlets and direct the falling condensate to a separate dedicated condensate outlet for disposal.
It is another object of the invention to provide falling condensate filtration with a removable, cleanable, air blocking screen to prevent contaminates from entering a drain system.
It is another object of the invention to prevent falling condensate from entering a clothes dryer by exhaust airflow upward force directing falling condensate towards and into the condensate drain.
It is another object of the invention to block entry of exhaust airflow into the condensate drain with an inverted drain loop (trap) which holds an amount of fluid so as to block downward entry of the exhaust airflow into the condensate drain.
It is another object of the invention to provide a toxic gas trap as part of the condensate drain for preventing upward entry of sewer gasses into the gaseous fluid system. The toxic gas trap comprises a drain loop (trap) which holds an amount of fluid so as to block upward entry of sewer gasses.
It is another object of the invention for the housing to be installed onto finished gypsum wall board surface of a room.
It is another object of the invention to provide continuous unrestricted airflow within the housing being dimensioned to be 3.5 inch depth, to accommodate interior wall installations of the housing. Airflow received from a 4 inch round (12.56 sq. inch) clothes dryer vent is converted to a 3.5 inch by 4 inch (14 sq. inch) or larger rectangular passageway for unrestricted airflow through the housing.
Within the housing, airflow passageway capacity equals or exceeds 100% of airflow capacity produced by the clothes dryer's 4 inch round flexible vent pipe. It is another object of the invention to provide an airflow monitor/alarm to record and signal any issues arising from overheating, reduced airflow volume or increased airflow pressure within the exhaust airflow system resulting from blockage due to build-up of lint particulate, condensate or their blending into a slurry.
It is another object of the invention to provide containment of the flexible exhaust pipe within the lower storage compartment of the housing with a moveable retaining gate for securing the flexible exhaust pipe in multiple non-kinking positions for storage and efficient connections to the clothes dryer exit pipe.
It is another object of the invention to provide positioning of the airflow filter, condensate filters, airflow diverter, access openings and observation windows in the operational zone for easy accessibility.
To the accomplishment of the foregoing and related ends, the invention, then, comprises the features here. The present invention in after fully describe and particularly pointed out in the claims, the following description and the annexed drawings setting forth in detail certain illustrative embodiments of the invention, these being indicative, however, of but some of the various ways in which the principals of the invention may be employed.
It is a further object of the invention to provide improved elements and arrangements thereof for the purposes described which is inexpensive, dependable and fully effective in accomplishing its intended purposes.
These and other objects of the present invention will become readily apparent upon further review of the following specifications and drawings.
There are shown in the drawings embodiments which are presently preferred, it being understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown, wherein:
Exhaust airflow 27 enters the diverter inlet port 29g and is directed by the second airflow directional guide 37a to the first outlet port 29d or to the second outlet port 29c subject to placement of the damper door 29f.
A weep-hole 28 is located on a sloped shelf 29h and is open to receive falling condensate “W” drainage from the airflow outlet pipe 36.
Falling condensate “W”, which forms in the airflow outlet pipe 36, is forced against the further side wall of an airflow hood 36b of the exhaust airflow diverter 29 by the upward and lateral pressure of the exhaust airflow 27 entering the exhaust airflow diverter 29 from the diverter inlet port 29g.
The falling condensate “W” continues to flow downward through the weep-hole 28 of the airflow diverter 29 into the condensate port 29b.
The inlet port 29g, primary outlet port 29d and secondary outlet port 29c are a rectangular 3.5 inch by 4 inch or larger configuration to provide an unrestricting airflow passage from the 4 inch round inlet vent pipe 26.
A 3.5 inch by 4 inch (14 sq. inch) or larger airflow channel 15 within the housing 1 exceeds the volume of the 4″ round (12.56 sq. inch) inlet vent pipe 26 resulting in no airflow restrictions. The housing 1 provides an unrestricting exhaust airflow 27 design throughout for efficient passage of exhaust airflow 27, which originates from a clothes dryer “D”.
Exhaust airflow 27 can be directed to either the primary outlet port 29d or to the secondary outlet port 29c by blocking the unselected outlet port with the moveable damper door 29f. The hood 36b serves to connect the airflow diverter 29 to the outlet pipe 36 and guide the exhaust airflow 27 upward and laterally to force the falling condensate “W” away from the primary outlet port 29d and toward the weep-hole 28 creating a separation of rising exhaust airflow 27 and falling condensate “W” within the airflow diverter 29.
A separation wall 29i segregates the weep-hole 28 from the airflow channel 15 to prevent exhaust airflow 27 from entering the eccentric condensate port 29b and additionally preventing condensate “W” from entering the diverter inlet port 29g, the primary outlet port 29d or the secondary outlet port 29c.
The separation wall 29i extends down but not connecting with the diverter floor 29j leaving a clearance gap 29m for water drainage from the airflow channel 15 which results from inadvertent water overflow into the airflow channel 15 of the airflow diverter 29.
The airflow diverter 29 has a diverter floor 29j that is slanted downward towards the eccentric condensate port 29b to allow inadvertent condensate water “W” to flow from the airflow chamber 15 through the clearance under the separation wall 29i into the condensate port 29b.
Additionally, the sloped diverter floor 29j is illustrated with the sloped floor valleys 29k to allow drainage to the eccentric condensate port 29b.
The exhaust airflow 27 current forces the condensate “W” away from the diverter inlet port 29g preventing condensate “W” entry.
Falling condensate “W” from the airflow hood 36b is directed to the weep-hole 28 by the sloped shelf 29h and the airflow current force produced by the exhaust airflow 27 current passing through the diverter inlet port 29g.
After passing through the weep-hole 28, the condensate water “W” is separated from the exhaust airflow 27 by the separator wall 29i which extends downward close to but not touching the diverter floor 29j, which allows inadvertent water “W” to flow under the separator wall 29i through the clearance gap 29m to exit through the eccentric condensate port 29b.
The top surface of the damper door 29f is sloped toward the sloped shelf 29h to direct water to the weep-hole 28.
Additionally, a drip edges 29L are positioned inside the airflow hood 36b to direct falling condensate water “W” towards the slanted shelf 29h and towards the weep-hole 28. Additionally, the diverter floor 29j has a sloped top surface to direct any inadvertent water through the clearance gap 29m towards the drain 29b.
The operational zone “Z” above the dryer top is shown to illustrate the accessibility to reach the removable filters and the access openings. Additionally, the exhaust pipe 36 is shown to have a continuous slope to eliminate any water traps that could fill with condensate “W”.
Throughout the following specific details are set forth in order to provide a more thorough understanding to persons skilled in the art. However, well known elements may not have been shown or described in detail to avoid unnecessarily obscuring the disclosure. Accordingly, the description and drawings are to be regarded in an illustrative, rather than a restrictive sense.
The preferred embodiment of the invention is shown in
The bottom wall 1a, side walls 1b and 1c, rear wall 1e and top wall 1d provide structural support for the housing 1. An upper compartment front wall 2,
To permit installation into the cavity of a typical framing wall, the housing 1 includes a mounting flange 1f which extends outwardly from the front periphery of walls 1b, 1c, & 1d and is cop-planar with the plane defined by the front periphery of walls 1b, 1c and 1d.
The mounting flange 1f includes mounting structures, such as holes 1g which are adapted to receive mounting screws to secure the housing 1 to a wall surface. Within the housing 1, a divider wall 17 separates an unrestricted airflow channel 15 from an eccentric condensate drain 29b and a condensate connector pipe 38.
The lower compartment 3 is substantially open in the front. The lower compartment 3 is separate from the closed upper compartment 4 by the upper compartment floor 18. The lower compartment 3 contains and organizes the flexible inlet pipe 26 with a closed retaining gate 6.
The retaining gate 6 is supported by gate hinges 7 and is secured in the closed position by a gate latch 8. The lower compartment 3 additionally contains the condensate drain pipe 11. The housing 1 which receives exhaust airflow 27 from a clothes dryer through the flexible hollow inlet vent pipe 26 is positioned within the lower compartment 3 and extends into the inlet pipe connector 14 located in the upper compartment floor 18 and conveys exhaust airflow 27 through the airflow channel 15 within the upper compartment 4.
Additionally, the inlet pipe connector 14 is configured to accept a 4 inch round inlet vent pipe 26 at inlet end and convert to a 3.5 inch by 4 inch rectangular configuration on its outlet end to accommodate 100% of the airflow volume conveyed from the round inlet vent pipe 26 and fit within the 3.5 inch housing 1 depth, the conversion allows the continuation of an unrestricted exhaust airflow passageway.
Located within the airflow channel 15 is a removable airflow filter unit 20 which collects lint particulate from the exhaust airflow 27.
The removable airflow filter 20 fits snugly and substantially airtight into a downward sloping airflow filter pocket 19 with the lower end being to the rear wall 1e,
The exhaust airflow 27 conveys through the removable airflow filter 20, located within the airflow channel 15. The airflow filter pocket 19, which receives the removable airflow filter 20 is positioned within the housing 1 to be located above the top wall of a typical clothes dryer within an operational zone “Z”,
Within the upper compartment 4, the exhaust airflow 27, exits the airflow filter 20 and is directed by a crescent shaped airflow guide 37, located within the airflow channel 15 through a lateral airflow channel 29a, and into an exhaust airflow diverter 29.
The airflow diverter 29 receives the exhaust airflow 27 and a second airflow guide 37a,
Falling condensate “W”,
The falling condensate W,
An airflow monitor/alarm 30, located above the airflow diverter 29, within the operational zone “Z”,
The rectangular unrestricting airflow outlet pipe 36 is above and connected to the airflow hood 36b,
Additionally, the removable condensate filter 34 is illustrated in the downward slant position from the front towards the rear wall 1e.
Additionally, illustrated is the operational zone “Z”, located above the top wall of a typical clothes dryer “D” and below a typical wall cabinet “C”.
The operational zone “Z” includes the outside front area of the housing 1 above the clothes dryer “D” and the inside area of the upper compartment 4,
The location of the removable condensate filter 34, removable airflow filter 20, exhaust airflow diverter 29, access openings 31,
The flexible inlet vent pipe 26, conveys the exhaust airflow 27 and is efficiently stored within the open lower compartment 3 and is positioned to turn and exit through an upper position 26a of the closed retaining Gate 5, additionally, a mid-position 26b and a lower position 26c are optional exit points as illustrated.
The closed retaining gate 5 comprises moveable cross members 5a,
The retaining gate 5 in the closed position allows positioning of the inlet vent pipe 26 in multiple positions, such as an upper position 26a, mid position 26b, or lower position 26c to allow an efficient connection to one or more clothes dryers. The inlet vent pipe 26 receives exhaust airflow 27 from a clothes dryer “D” and conveys the exhaust airflow 27 through the inlet pipe connector 14,
The retaining gate 5 comprises a hinge 7
Continuing with
Attachment holes 1g allows housing 1 installation to the wall studs “S” within a framing cavity.
Additionally, illustrated in
Access openings 31 are located in the upper compartment 4 for interior maintenance and additionally serves as the openings for the removable windows 32.
The removable windows 32 are secured to the access openings 31 with window frames 33. The removable windows 32 allow interior observation during operations without loss of exhaust airflow 27.
Additionally, illustrated is the removable airflow filter 20, the condensate filter 34 and the
Additionally, illustrated is the removable airflow filter 20, the condensate filter 34 and the airflow diverter 29 within the upper compartment 4. Illustrated within the lower compartment 3 is the toxic gas trap 10.
A substantially hollow device with multiple ports for conveying exhaust airflow 27 to selected primary outlet port 29d or secondary outlet port 29c and direct falling condensate “W” through the weep hole 28 to the condensate port 29b.
The rectangular unrestrictive diverter airflow channel 29a accepts exhaust airflow 27 from the unrestricted airflow channel 15 through the rectangular unrestricted inlet port 29g and into the unrestricted exhaust airflow diverter 29.
The exhaust airflow diverter 29 comprises a moveable damper door 29f,
The primary rectangular airflow outlet port 29d conveys the exhaust airflow 27 to the airflow through an airflow hood 36b into the outlet pipe 36, which continues to convey the exhaust airflow 27 to the outside atmosphere. The secondary airflow outlet port 29c conveys the exhaust airflow 27 to an alternate location such as an interior space of a house.
The diverter 29, primary outlet port 29d, secondary outlet port 29c and inlet port 29g are rectangular to allow unrestricted exhaust airflow 27 of at least 100% capacity received from the 4 inch round inlet vent pipe 26.
The damper door 29f pivotally mounted on a hinge is rotatable to close off the entrance to the secondary airflow outlet port 29c for directing exhaust airflow 27 into the primary airflow outlet port 29d or alternatively close off the primary airflow port 29d and direct exhaust airflow 27 into the secondary airflow outlet port 29c.
The hinged damper door 29f comprises a handle 29e to direct the exhaust airflow 27 to either the primary airflow outlet port 29d or direct the exhaust airflow 27 to the secondary airflow outlet port 29c.
The exhaust airflow diverter 29 is positioned within the operational zone “Z”
Condensate water “W” falling downward from the exhaust pipe 36 enters into the airflow hood 36b and is forced away from the primary exhaust port 29d, secondary port 29c and inlet port 29g by upward and lateral exhaust airflow 27 current, thus forcing condensate “W” to the weep-hole 28 and away from the primary exhaust port 29d, second exhaust port 29c and inlet port 29g.
The condensate water “W” continues to flow by gravity through the weep hole 28 and continues downward to the eccentric condensate port 29b.
The condensate port 29b is partitioned away from the airflow channel 15 by a separator wall 29i which is held approximately 0.25 inches from the diverter floor 29j to allow inadvertent water to flow through a clearance space 29m between the floor 29j and the separator wall 29i.
Continuing with
The upward flowing current of the exhaust airflow 27 derived from the inlet port 29g is directed by a second airflow directional guide 37a into the airflow diverter 29, producing airflow pressure against the downward falling condensate “W”. forcing the falling condensate “W” toward the distant side wall of the diverter 29, away from the source of exhaust airflow 27 and toward the weep hole 28 and then into the eccentric condensate drain 29b.
Additionally, the separator wall 29i restricts exhaust airflow 27 from entering the eccentric condensate drain 29b. The downward angle of the eccentric condensate drain 29b provides additional entry resistance of the exhaust airflow 27.
The pressure of the exhaust airflow 27 entering the exhaust airflow diverter 29 combined with the second airflow directional guide 37a produces an angled force of the exhaust airflow 27 against the falling condensate “W” thus preventing the falling condensate “W” from entering the rectangular airflow channel 29a while forcing the falling condensate “W” away from the diverter airflow channel 29a and towards the eccentric condensate drain 29b located at the far side of the diverter 29, away from the upward path of the exhaust airflow 27.
The upward flowing exhaust airflow 27 is able to flow past the falling condensate water “W” and continue through the airflow hood 36b into the exhaust pipe 36 or optionally, flow through the secondary airflow outlet port 29c.
The falling condensate “W” is forced away from the inlet port 29g to the far side of the airflow diverter 29 by the forceful current of the exhaust airflow 27, thus preventing falling condensate “W” from entering inlet vent pipe 26 and continuing into the clothes dryer “D”
The exhaust airflow 27 is directed away from the eccentric condensate drain 29b by the airflow guide 37a and separator wall 29i.
Additionally, the eccentric condensate drain 29b is substantially reduced in diameter and obliquely configured downward and inward to be slanted against the exhaust airflow 27 current, so as to repel exhaust airflow 27 entry.
Additionally,
Falling condensate “W”, which forms in the airflow pipe 36 is forced against the further side wall of the diverter 29 by the upward and lateral pressure from the exhaust airflow 27 entering the diverter 29 combined with the placement of the drip edge 291 within the hood 36b.
The falling condensate “W” continues downward through the weep hole 28 into the condensate port 29b.
The rectangular configuration of the inlet port 29g, primary outlet port 29d and secondary outlet port 29c sized to 3.5 inch by 4 inch or larger provides over 100% capacity of the exhaust airflow 27 volume received from the 4 inch round inlet vent pipe 26.
The 3.5 inch by 4 inch (14 sq. inch) or larger exhaust airflow 27 passageway through the airflow channel 15 and all other components of the housing 1 exceeds the volume of the 4 inch round (12.56 sq. inch) inlet vent pipe 26.
Thus, the housing 1 provides a non-restricting exhaust airflow 27 passageway design for an unrestricted exhaust airflow 27 passage.
The eccentric condensate drain 29b is reduced in diameter and slanted downward to repel entry of exhaust airflow 27 through the eccentric condensate drain 29b.
Additionally, exhaust airflow 27 is directed away from entering the eccentric condensate drain 29b by the second airflow guide 37a and the separator wall 29i.
Illustrated is the diverter floor 29j and the floor valleys 29k slanted toward the eccentric condensate drain “29b” to carry spill-over condensate water “W” to the eccentric condensate drain 29b
Falling condensate water “W” which forms in the airflow pipe 36 is blocked from draining back through the inlet port 29g by upward and lateral airflow pressure derived from the inlet port 29g, within the airflow diverter 29.
In this illustration, the upward airflow pressure forces the falling condensate water “W” to the far-right side of the airflow diverter 29 for a direct flow path through the weep-hole 28 located on the far-right side wall into the eccentric condensate drain 29b, which is also located on the far-right side of the airflow diverter 29.
Additionally, a drip edge 291 prevents the falling condensate water “W” from continuing to flow down the left side inside wall of the airflow hood 36b, keeping the falling condensate water “W” flowing away from the inlet port 29g and toward the weep-hole 28.
Additionally, the separator wall 29i blocks exhaust airflow 27 from entering the weep-hole 28 and the eccentric condensate port 29b, thus forcing the exhaust airflow 27 upward into the airflow hood 36b. The separator wall 29i does not reach the diverter floor 29j, leaving a clearance gap 29m (approximately 0.25 inch) to allow a passageway under the separator wall 29i for spill-over condensate water “W” to flow towards the eccentric condensate port 29b.
Additionally, the sloped shelf 29h directs falling condensate water “W” towards and into the weep-hole 28.
Additionally, the diverter floor 29j is sloped towards the eccentric condensate port 29b to direct any condensate water “W” that may inadvertently overflow the sloped shelf 29h.
The features listed above combine to prevent falling condensate water “W” from entering and blocking the clothes dryer vent 26.
In this illustration the falling condensate water “W”, which forms in the airflow outlet pipe 36 is blocked from flowing into and through the diverter inlet port 29g by the damper door 29f positioned to seal the primary outlet port 29d.
Additionally, the upper surface of the damper door 29f is sloped towards the sloped shelf 29h to drain falling condensate water “W” towards and into the weep-hole 28.
Additionally, the drip-edge 291, located on the interior wall of the airflow hood 36b, uses water adhesion and water cohesion to intercept and collect condensate water “W”, which originates from the airflow outlet pipe 36, the condensate water “W” intercepted and collected by the drip-edge 291, succumbs to gravity and falls onto the sloped shelf 29h and into the weep-hole 28.
Additionally, one or more drip edges 291, installed within the airflow hood 36b to intercept and guide condensate water “W” away from the inlet port 29g.
Additionally, the separator wall 29i blocks exhaust airflow 27 from entering the weep-hole 28 and the eccentric condensate port 29b, thus forcing the exhaust airflow 27 outward through the secondary exhaust port 29c into an optional space such as an interior room.
Additionally, the separator wall 29i does not reach to or connect with the diverter floor 29j, so as to provide a clearance gap 29m at the bottom, to allow inadvertent overflow condensate water “W” to flow unencumbered to the eccentric condensate port 29b.
Additionally, the diverter floor 29j is sloped towards the eccentric condensate port 29b to direct any condensate water “W” that inadvertently overflows the sloped shelf 29h. The clearance gap 29m between the separator wall 29i and the diverter floor 29j allows unencumbered passageway for the overflow condensate water “W”.
Additionally, the floor flow valleys 29k of the diverter floor 29j adds additional downward slope through the clearance gap 29m towards the eccentric condensate port 29b for a more efficient flow.
Additionally, the side wall knockouts 26d and 26e may be optionally utilized to deploy the flexible inlet vent pipe 26 through a side wall of the housing 1 within the lower compartment 3. The retaining gate 5 is supported by hinges 7 and secured by a latch 8 to contain the flexible inlet vent pipe 26.
Additionally, the rear wall 1e is shown to better illustrate the housing 1.
The illustration comprising the airflow double filter unit 20 separated from the housing 1 in the open position for cleaning. The preferred arrangement comprises the hollow airflow filter frame 21 securing the two screen holders 24, which are shown in the open position for cleaning.
The screen holders 24, which serves as a holding frame for the screens 25. The screens 25 allow exhaust airflow 27 to pass through while removing lint particulate during cloth dryer “D” operations.
The illustrated open position is for lint removal and inspections.
The screen holders 24 are attached to the filter frame 21 by the frame hinges 22 to allow inwardly folding to a closed position into the filter frame 21. The folded filter unit 20 is inserted into the filter pocket 19,
The airflow double filter unit 20 is inserted into and removed from the airflow filter pocket 19 with the airflow filter frame handle 23.
Illustrated is the pathway of the exhaust airflow 27 through the double filter unit 20 when in the closed configuration and inserted into the airflow filter pocket 19,
Illustrated is the airflow double filter 20 removed from the filter pocket in the operational configuration.
The illustration comprising the hollow airflow filter frame 21 securing the two screen holders 24, which are shown in the closed operational position for inserting into the filter pocket 19,
The illustrated operational position fits firmly into the filter pocket 19,
The airflow double filter unit 20 is inserted into and removed from the airflow filter pocket 19 with the airflow filter frame handle 23.
Illustrated is the pathway of the exhaust airflow 27 through the double filter unit 20 when inserted into the filter pocket 19 of the housing 1, resulting in the operational configuration.
Additionally, illustrated is the downward sloping rectangular airflow outlet pipe 36, positioned to prevent a water trap which could block airflow.
The front wall, upper compartment 2 and the airflow filter pocket 19 are illustrated above the clothes dryer “D” top wall in the operational zone “Z” for accessibility by a clothes dryer operator.
The upper compartment 2, and filter pocket are illustrated above the clothes dryer “D” for convenient accessibility by the operator.
The present invention can be constructed from a variety of materials, and for safety considerations is preferable constructed of materials which are substantially fire resistant and have non-flammable and non-melting properties. Suitable materials include metal, ceramic and plastics having the appropriate properties, although other materials are also acceptable.
The present invention can be formed as an integral piece using conventional injection molding techniques know in the art, although the invention is not limited in that regard. For example, the present invention can also be constructed from flat stock metal using sheet metal tools. The invention is capable of taking a number of specific forms without departing from the spirit or essential attributes thereof. Accordingly, the following claims should be referenced to determine the scope of the invention, rather than the foregoing specification.
