Toilet ventilation for residential and commercial buildings

Abstract

A toilet venting system and kits to remove malodorous air from one or more toilet (and urinal) fixtures including fluidic pump stations for a multi-fixture environment, air intake assemblies, and ancillary components provided for its function. Air intake assemblies allow for existing toilets and urinals to be retrofitted with an air intake nozzle and connection to a toilet venting system. Ancillary component assemblies can be installed in a manner compatible with conventional existing electrical outlet boxes and plumbing fittings. Toilet and urinal designs that include a direct air conduit to the interior air space of their bowls and an exterior push-to-connect connection port for a tubing connection to a fluidic pump are also disclosed.

Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] The present application is a continuation of PCT patent application No. PCT / US2024 / 019438, filed Mar. 11, 2024, based on and claiming priority to U.S. provisional patent application 63 / 489,757, filed Mar. 11, 2023, both of which are incorporated herein by reference in their entirety.TECHNICAL FIELD

[0002] This invention relates generally to toilets, and more particularly to systems for addressing odors emanating from toilets.BACKGROUND

[0003] Ever since the invention and widespread adoption of the flushing toilet many inventions have been disclosed working towards solving the toilet odor problem. It is well understood within the art that the most effective way to eliminate toilet odor is an approach that captures the malodorous air before it escapes from the confines of the toilet bowl. While most of these inventions are somewhat effective in addressing the problem, the widespread adoption of toilet odor ventilation systems has not yet happened. These solutions are typically not commercially viable due to the high cost and complexity of the prescribed apparatus and its installation and ongoing maintenance. Prescribed solutions may also be unacceptable aesthetically or require special installations that make them incompatible with existing toilet fixtures and not practical for widespread adoption or compliance with existing building codes.

[0004] Previous attempts to solve this problem have typically employed fans, blowers, and other rotating vane type air movers that by nature move high volumes of air but with relatively low pressures which in turn require the use of appropriately sized hose or ducting to facilitate low resistance air flow. Without a proper understanding of the minimum air exchange rate required to mitigate odors within an enclosed volume, the solutions proposed have typically been over designed to deliver more air flow than required and disregarding other types of air movers deemed to have insufficient performance from consideration. In other cases, a specification error is made where the proposed solution assumes sufficient air flow can be achieved using these high flowing air mover types but flowing through small diameter tubing. This is an unreasonable expectation due to increasing resistance to fluid flow as the diameter and cross-sectional area of the tubing decreases and as tubing length increases—not enough pressure.

[0005] Because restroom facilities in commercial or public buildings typically utilize tankless toilets and urinals that utilize a flushometer type valve for flushing, and since Flushometer equipped fixtures do not include a cistern with an overflow pipe configuration that could be used for air extraction, as in typical home toilets, an alternative method for extracting air from the proximity of the toilet (or urinal) bowl will need to be utilized.

[0006] The basic design and function of a flushometer valve is described by Sloan, U.S. Pat. No. 1,114,398 while an early embodiment of a vacuum breaker for use with a flushometer valve is described by Kenney, U.S. Pat. No. 2,370,247. The vacuum breaker for a flushometer valve assembly, in most cases, uses a special connection pipe with vacuum relief cutaway holes located at the top end of the pipe where the rubber vacuum breaker bladder is inserted. These holes are sealed shut by the vacuum breaker which expands under pressure when water passes through the body of the vacuum breaker during a flushing event. This prevents water from escaping through the vacuum relief holes during the pressurized portion of the flushing cycle but returns to the open condition after completion to allow air to enter the connection pipe to prevent a vacuum condition from forming. In general, most building codes require a vacuum breaker to prevent the siphoning of water backwards into the supply line. The vacuum breaker function for any toilet or urinal fixture must therefore be maintained for any proposed toilet ventilation solutions to be viable. A solution that attempts to integrate a vacuum air exhaust function in a directly coordinated manner with the flushometer and vacuum breaker system would be complex and difficult to implement.

[0007] A method that has been previously suggested is to provide an air intake pipe or duct that can be secured to the rim of the toilet bowl and connected to an air mover as described by Cogswell, U.S. Des. Pat. No. D692,995 and Chun, U.S. Pat. No. 4,876,748. These need to be of sufficient size to allow for the required air flow rate of malodorous air to be exhausted by the attached air mover and could be quite large if the vacuum pressure being generated by the air mover is minimal. However, for a toilet that may be installed in a public or shared facility it would be advantageous to have a solution that could be integrated unobtrusively with the toilet fixture to reduce the chance of physical damage, allow for easy cleaning and washdown, and for a clean looking aesthetic.

[0008] Another widely accepted methodology is the use of a special toilet seat design that incorporates air exhaust channels into the body of the seat structure or as part of the seat mounting and pivot hinge assembly which is then connected to an air mover. Some examples of this seat type solution have been proposed by Sowards, U.S. Pat. No. 3,649,972; Agelatos et al., U.S. Pat. No. 4,944,045; and Wolfe, U.S. Pat. No. 6,772,449 B1. In many cases, the toilet seat can be designed to be retrofit to existing toilets. The downside of this type of solution is the extra cost of the specially designed toilet seat and the difficulty matching the range of finished dimensions and aesthetics of different toilet bowl models currently on the market. The toilet seat approach also typically requires a flexible, accordion style, air hose to be connected to the seat to allow the seat to be lifted open during use or cleaning. The flexible hose is difficult to conceal and may be prone to damage and is difficult to clean due to the pleating which can trap fluids and debris. A better solution would allow for an existing commercial toilet to be updated with an air exhaust tube without the need to replace the toilet seat in an aesthetically acceptable manner, durable, and easy to clean.

[0009] Denzin, et al., U.S. Pat. No. 6,279,173B1 describes a blower fan mounted internally within the toilet tank that encapsulates the top of the overflow and requires that the blower not generate enough vacuum pressure to suction water into the system.

[0010] For a toilet seat type solution, Character, U.S. Pat. No. 8,239,973B describes the use of a quick connection type fitting for an air hose connection to an air mover. This is acceptable for this type of solution because the air gap between the underside of the seat and the top of the toilet bowl rim prevents water from being suctioned into the air hose in case of an accidental overflow event.SUMMARY

[0011] An embodiment contemplates a toilet ventilation system for operatively engaging multiple toilets, multiple urinals, or both the toilets and the urinals, the toilet ventilation system comprising: a pump case having a housing and a lid removably mounted on the housing, the pump case including inlet pass-throughs for air lines configured to direct air from the toilets or urinals into the pump case, cable connector ports configured to operatively engage cables connecting toilet ventilation activation switches to the pump case, a pass-through for an exhaust air line configured to direct air out of the pump case; and a plurality of fluid pumps mounted in the pump case and configured to connect to the air lines, cables and exhaust air line.

[0012] An embodiment contemplates a toilet ventilation system for operatively engaging a flushometer toilet, the toilet ventilation system comprising: an air intake nozzle extending from a toilet bowl of the flushometer toilet toward a spud cover; air intake tubing operatively engaging the air intake nozzle and extending past the spud cover; and a spud cover assembly mounted around the spud cover and a vacuum breaker connecting pipe of the flushometer toilet, and configured to allow the air intake line to pass through the spud cover assembly to a back side of the flushometer toilet.

[0013] An embodiment contemplates a toilet ventilation system for operatively engaging a urinal, the toilet ventilation system comprising: a tubing adapter mounted on a front, generally horizontal surface of a bowl of the urinal, and including an air intake nozzle open to the bowl of the urinal and a tube connection outlet on an underside of the tubing adapter outside of the bowl; and air intake tubing operatively engaging the tube connecting outlet and extending down along a surface of the urinal towards a bottom of the urinal.

[0014] An embodiment contemplates a toilet ventilation system integrated into a urinal, the toilet ventilation system comprising: a bowl; a water overflow channel extending within the urinal having an overflow inlet open to the bowl on an upper portion of a front wall of the bowl, an overflow outlet to a drain of the bowl, and a tubing access port within the urinal; and air intake tubing operatively engaging the tubing access port and extending to a back of the urinal.

[0015] An embodiment contemplates a toilet ventilation system integrated into a flushometer toilet, the toilet ventilation system comprising: a bowl having a channel molded therein, with the channel having a first end open to an underside of a toilet bowl rim and a second end open to a back side of the flushometer toilet; and an adapter block configured to operatively engage the second open end and connect to an air intake tube that is configured to direct air toward a fluid pump.

[0016] An embodiment contemplates a toilet ventilation system integrated into a toilet, the toilet ventilation system comprising: a bowl; a tank operatively engaging the bowl, including a cutout in a bottom or side wall of the tank; a toilet tank overflow pipe mounted within the tank; an air intake shroud mounted over a top of the toilet tank overflow pipe; a fitting sealingly secured in the cutout, and having a hollow center configured to allow for airflow therethrough; and an air tubing lead operatively engaging the hollow center at a first end and operatively engaging the air intake shroud a second end.

[0017] An embodiment contemplates a toilet ventilation system integrated into a toilet, the toilet ventilation system comprising: a bowl; a tank operatively engaging the bowl, including a cutout in a bottom or side wall of the tank; a toilet tank overflow pipe mounted within the tank; an air intake shroud mounted over a top of the toilet tank overflow pipe; a fitting sealingly secured in the cutout, and having a hollow center configured to allow for airflow therethrough; and an air tubing lead operatively engaging the hollow center at a first end and operatively engaging the air intake shroud a second end.

[0018] An embodiment contemplates a kit made up of elements of a toilet ventilation system.

[0019] The present toilet ventilation system addresses the shortcomings that will facilitate the adoption of toilet odor ventilation systems for new construction projects for both residential and commercial building applications. The embodiments disclosed herein may be used individually or in combination within a given building construction project as each unique building application requires.

[0020] The embodiments of the toilet ventilation system disclosure include: fluid pumps for single and multi-fixture toilet applications; wall outlet connections for electrical and air flow; drain water and vent pipe air exhaust connections; retrofit options for existing flushometer valve equipped toilets and urinals; and / or toilets and urinals with integrated toilet ventilation.

[0021] With regard to fluid pumps employed in toilet ventilation systems for multi-fixture toilet applications, an embodiment of this solution comprises a case capable of housing multiple individual fluid pump assemblies that may be provided to consumers as a ready to connect option for both air, switch signal, and power connections. The fluid pump assemblies may also be employed with a single toilet retrofit kit. The case contains all the tubing, manifolds, and wiring harness to each pump internally. The case containing the fluid pump assemblies may provide noise reduction when in operation. In the event of individual pump failure, a replacement fluid pump assembly can be easily swapped with the failed unit.

[0022] A case may house individual fluid pump modules rather than complete fluid pump assemblies. This allows for a denser concentration of fluid pump modules to be able to serve more toilets from a single case and for the inclusion of a programmable logic controller for more sophisticated operation control. Push-to-connect air intake and exhaust ports, switch signal connections, power, and programming interface for each fixture may be provided on the exterior of the case while all tubing, manifolds, and control wiring may be contained internally. A digital interface screen may be provided in lieu of individual (per toilet fixture) timer controls for programming.

[0023] With regard to wall outlet connections for a toilet ventilation system, it is beneficial when a selection of wall outlet plates with the push-to-connect air connection, switch cable connection, button switch, motion sensor, or any combination thereof are available to installers. These wall outlet plates are dimensionally and aesthetically compatible with standard outlet boxes and cover plates that are used in typical building construction and allow for the required tubing and signal wire runs to be installed at the same time as other utilities are being installed within the building construction project's normal workflow. An embodiment has a special bracket design that matches the dimensional and screw mounting requirements for a standard rectangle style wall outlet. The bracket incorporates a rectangular window and mounting screw points for a bulkhead style socket connector with screw terminals and a circular cutout that accommodates a push-to-connect straight tubing connection fitting. This finished bracket assembly is then installed in a low-voltage outlet box or bracket in a similar manner to a regular electrical outlet or wall switch, air and signal connections made, and finished with a standard wall outlet cover. These wall outlets may be replicated for mounting button switches, motion sensors, low voltage power, relay switches, etc.

[0024] With regard to drain water and vent pipe air exhaust connections for a toilet ventilation system, it is beneficial for both residential and commercial building applications when a configuration for connecting air exhaust tubing to an existing sanitary drain water and vent pipes are available to installers that is compatible with existing fittings and allow for easy replacement should the need arise to replace a failed or damaged push-to-connect connection port. An embodiment of this consists of a threaded drain water clean out plug with an integrated push-to-connect connection cartridge. The cartridge may be mounted as a compression fit insert or permanently fixed in a cavity and water-proofed using a potting compound backfill. Because a drain water cleanout port is typically configured as the perpendicular outlet of an inline tee fitting, a 90-degree push-to-connect stem fitting may be used in conjunction with embedded straight fitting to redirect the exhaust tubing connection as needed for exhaust tube routing.

[0025] For situations where a sink drainpipe exhaust connection is more suitable, a slip joint tee fitting may be installed to support an air exhaust tubing connection. Typically, this slip joint tee is used to connect a suitably sized drain water pipe. However, an embodiment consisting of a plug fitting that is suitably sized for the slip joint fitting and incorporating one, or multiple, push-to-connect cartridge fittings may be installed instead.

[0026] With regard to toilet ventilation system retrofit options for existing flushometer valve equipped toilets and urinals, an air intake nozzle may be attached to the toilet bowl or urinal in proximity to the bowl opening, which is used to allow for malodorous air to be extracted. These air intake nozzle embodiments are relatively small due to the relatively low air flow, relatively high-pressure air exhaust from a fluid pump, whereas a system that uses a relatively high air flow, relatively low-pressure air mover, such as with a fan, requires significantly larger air intake manifold channels to allow for sufficient air flow. Since only a small and objectively quantifiable amount of malodorous air needed to be exhausted when it is captured directly from the toilet bowl during use while still contained in a relatively closed volume, the small airflow, high pressure fluid pumps provide the desired function. The benefits of this approach include a reduction in the size of system components, allowing the use of flexible tubing for easier installation and for long exhaust tubing runs where required, fluid pumps that are resistant to damage if water is accidentally taken in, and compatibility with existing commercially available tubing and small diameter pipe types. The total cross-sectional area of the intake nozzle opening is generally equal to or greater than the cross-sectional area of the inside diameter (I.D.) of the attached air intake tube. Since an example of the suggested tubing diameter is ¼-inch I.D. the intake manifold body can be quite compact, allowing it to pass through a small gap between the toilet bowl rim and an attached toilet seat. These intake nozzle components may be 3D printed as single piece bodies or assembled from molded plastic, clam shell component pieces. Microchannel aluminum extrusion sections may also be incorporated as an air flow conduit where a small gap passthrough is employed. In conjunction with the intake nozzle, a tubing adapter is used to transition between the profile shape of the intake nozzle body and a connection port for the air intake tubing. The end of the air intake tubing is plugged into the adapter port to provide a leakproof connection between the air intake assembly and the fluidic pump.

[0027] Employing the diaphragm type fluidic pump allows the pump to operate in a manner in which the pump is resistant to water damage, which allows for a direct air exhaust line connection to be made with the interior of the toilet bowl. When direct air exhaust line is connected to the interior of the toilet bowl (or urinal bowl), a chance exists that under some circumstances, the toilet ventilation system may ingest some water with the air. For pumps and fans that cannot operate or will be damaged if water is ingested, then the risk of water ingestion with a direct air exhaust line to the interior of the bowl risks malfunctioning or permanent damage to the pump or fan. Thus, when using the term “fluidic pump” herein, including the claims, this means a pump that primarily draws in air but can also handle drawing water in with the air without pump malfunctioning or damage to the pump. The terms “fluidic pump” and “fluid pump” are used interchangeably herein and have the same meaning. As an added benefit, such a system when connected to a sanitary drainpipe for exhaust diverts water to an alternate sanitary drain in the event of an overflow condition to prevent or reduce the amount of water breaching containment of the toilet bowl (or urinal).

[0028] For flushometer equipped toilets, a protective housing component may be installed to conceal and protect the air intake tubing and provide a route extending from just behind the toilet seat to the rear of the toilet bowl fixture. The housing may be designed as a clamp-on attachment to the flushometer connection pipe and be constructed from durable plastic material, chrome plated brass, stainless steel, zinc, or other material that may be finished to resist rusting. This housing may enclose or serve as a replacement for the toilet spud fitting cover.

[0029] For fluid pump operation control in a toilet ventilation system, a switch or switch in combination with a motion sensor may be used for each connected fixture. A surface mountable switch cover assembly that includes a switch, motion sensor, and signal cable with connector can be adhesive mounted to a wall in proximity to the toilet or urinal.

[0030] For an outlet box installation, a wall outlet bracket assembly that includes provision for a switch or switch and motion sensor combo can be used for installation during building renovation or new building construction.

[0031] For flushometer equipped toilets, the switch and motion sensor may be incorporated into the design of the previously described “toilet spud cover” for a complete and ready to install upgrade unit that further simplifies installation for the installer.

[0032] With regard to new toilets and / or urinals with integrated air exhaust tubing connections in a toilet ventilation system, a toilet bowl or urinal body can be manufactured with an integrated push-to-connect connection port and air exhaust conduit leading from the connection fitting to the toilet bowl or urinal interior ready for tubing connection to a fluid pump for exhaust.

[0033] For a toilet bowl of a toilet ventilation system, the molded porcelain body can be designed to include a formed access opening where a length of pipe with a 90-degree bend on one end is installed such that the bent end emerges through an opening on the underside of the toilet bowl rim. The pipe may extend through the existing flush passage with the straight end of the pipe engaging an adapter block that transitions to a push-to-connect cartridge fitting. The adapter is fitted into the access opening and secured in place with an adhesive sealant or epoxy to ensure a waterproof seal is achieved and providing an air exhaust connection port at the rear of the toilet bowl. Another embodiment of a toilet ventilation system incorporates a push-to-connect cartridge or straight connector fitting embedded within a miniaturized toilet spud fitting that is used to plug the access opening with an expanded gasket seal instead of adhesive.

[0034] For a urinal of a toilet ventilation system, the urinal may be designed with a water overflow channel, like that of a vanity sink, that includes a small opening in the interior of the bowl and an internal channel connecting to a drainpipe just below the drain opening. A small access port may be added to the overflow channel that allows for the end of a flexible tube to be installed and permanently secured in place using adhesive sealant or epoxy. The other end of the flexible tube is routed to the rear of the urinal in proximity to the primary drain connection and a push-to-connect straight connection fitting installed to be ready to accept a tubing connection to the fluid pump for exhaust.

[0035] An example of a toilet ventilation system for a toilet equipped with a toilet tank that uses an intake shroud assembly (as prescribed by U.S. patent application Ser. No. 17 / 882,676, filed Aug. 8, 2022, by Hung) or other solutions to be able to use the overflow pipe and flush channels as an air exhaust conduit to the toilet bowl, a bulkhead style push-to-connect straight connector fitting may be installed in the bottom of the tank for tubing connections to be made on each side of the bulkhead. This fitting is inserted through an appropriately sized hole and secured in place with fixing nuts and gaskets for a waterproof installation. Another embodiment includes a bulkhead style fitting with an integrated push-to-connect cartridge and tubing lead for connection to an air intake shroud installed to the overflow pipe. An additional passthrough hole is provided in the bottom of the toilet tank that can be a mirrored layout of the fill valve passthrough hole. The passthrough fitting may be similar in design to the fill valve compression joint, except it is limited to a short stub section, enough to contain just the cartridge fitting, tubing lead, and potting compound backfill. Another embodiment may be of a similar configuration but also include passthrough for a switch cable patch cord with a socket connector for the button switch for the interior of the tank and a plug connector for a switch extension cable for the exterior of the tank.

[0036] It is beneficial for the present toilet venting system to have system components that make the addition of the toilet venting system more compatible with methods and standards currently used by the construction trades. For plumbing and mechanical trades, the system components are compatible with commercially available pipe, tubing, and air fittings. For the electrical trades, the power and signal componentry use commercially available outlet boxes, cover plate systems, wire, and cable. The system components also are integrated more aesthetically into the design of the finished bathroom with additional installation options for designers and builders to have at their disposal.

[0037] With regard to fluidic pump specifications for multi-fixture toilet applications of toilet ventilation systems, the basic tenet of providing each fixture with its own fluid pump, switch, exhaust and power outlet connection is an acceptable solution. Optionally, it may be beneficial to locate these fluid pumps together remotely and to share power and exhaust connections and have the ability to control the operation of the fluid pumps as a group where desired. Furthermore, a fluid pump system specifically configured for a multi-fixture restroom facility's exhaust connections may be a more desirable solution than serving each fixture with an individual fluid pump at each fixture position or as a cluster of pumps located together remotely. A programmable logic controller may be included with this type of multi-fixture fluid pump system since the ventilation cycle may be run intermittently without human interaction to meet air quality objectives.

[0038] For commercial or public buildings, a toilet ventilation system for a multi-occupant and multi-fixture restroom facility provides the same benefit of improved indoor air quality as well as reduced energy costs by decreasing the requirements for minimum ventilation system air exchange per hour. Specific air exchange rates vary by applicable building or ventilation code requirements, however, a minimum of 50 cubic feet per minute of continuous ventilation per toilet or urinal can be used as a general guideline (at the time of writing) for a commercial restroom facility in the United States. By improving indoor air quality through a low air flow, point odor extraction approach at each toilet or urinal, a reduced continuous air exchange output for the restroom facility may be acceptable.

[0039] Additional understanding of these examples can be obtained by review of the detailed description below, and the appended drawings.BRIEF DESCRIPTION OF THE DRAWINGS

[0040] FIG. 1 is a schematic, perspective view of a multiple fluid pump case.

[0041] FIG. 2 is a schematic, perspective view of the multiple fluid pump case with its lid opened.

[0042] FIG. 3 is a schematic, perspective view of a fluid pumping station without a lid shown.

[0043] FIG. 4 is a schematic, perspective, partially exploded view of a fluid pumping station and lid assembly, with connections and control interfaces illustrated.

[0044] FIG. 5 is a schematic, perspective view of a toilet and a wall outlet having an air and switch connection plate.

[0045] FIG. 6 is a schematic, front perspective view of a wall outlet having an air and switch connection plate.

[0046] FIG. 7 is a schematic, rear perspective view of a wall outlet having a switch connection plate assembly mounted to a low voltage wall outlet bracket.

[0047] FIG. 8 is a schematic, perspective view of a 2-gang, dual voltage wall outlet box with a 120 VAC (volts of A / C current) outlet in combination with an air-switch connection insert panel assembly.

[0048] FIG. 9 is a schematic, rear perspective view of a 2-gang, dual voltage wall outlet box with a regular 120 VAC outlet in combination with an air-switch connection insert panel assembly.

[0049] FIG. 10 is a schematic, perspective view of a single, low voltage wall outlet box with an air-switch connection insert panel assembly.

[0050] FIG. 11 is a schematic, rear perspective view of a single, low voltage wall outlet box with an air-switch connection insert panel assembly.

[0051] FIG. 12 is a schematic, perspective view of a single, wall outlet box with a button switch insert panel assembly.

[0052] FIG. 13 is a schematic, rear perspective view of a single, wall outlet box with a button switch insert panel assembly.

[0053] FIG. 14 is a schematic, perspective view of an air-switch connection insert bracket.

[0054] FIG. 15 is a schematic, rear perspective view of an air-switch connection insert bracket.

[0055] FIG. 16 is a schematic, perspective view of an air-switch connection insert assembly.

[0056] FIG. 17 is a schematic, rear perspective view of an air-switch connection insert assembly.

[0057] FIG. 18 is a schematic, perspective view of a button switch insert panel.

[0058] FIG. 19 is a schematic, rear perspective view of a button switch insert panel.

[0059] FIG. 20 is a schematic, perspective view of a button switch insert panel assembly.

[0060] FIG. 21 is a schematic, rear perspective view of a button switch insert panel assembly.

[0061] FIG. 22 is a schematic, perspective view of a drain water (DW) cleanout tee fitting with an exhaust air cleanout plug assembly installed.

[0062] FIG. 23 is a schematic, perspective view of a threaded drain water exhaust air cleanout plug assembly.

[0063] FIG. 24 is a schematic, rear perspective view of a threaded drain water exhaust air cleanout plug assembly.

[0064] FIG. 25 is a schematic, perspective view of a sink drain trap assembly and slip joint tee pipe with an air connection plug fitting installed.

[0065] FIG. 26 is a schematic, underside perspective view of a slip joint air connection plug fitting.

[0066] FIG. 27 is a schematic, exploded perspective view of a slip joint air connection plug fitting assembly.

[0067] FIG. 28 is a schematic, perspective view of a commercial style toilet with flushometer valve (prior art).

[0068] FIG. 29 is a schematic, exploded perspective view of a flushometer vacuum breaker assembly (prior art).

[0069] FIG. 30 is a schematic, perspective view of a flushometer equipped toilet with an air intake and spud cover assembly. The toilet seat has been sectioned mid-way to show the air intake fitting in relation to the seat section.

[0070] FIG. 31 is a schematic, enlarged, perspective view of the air intake and spud cover assembly installed on the toilet of FIG. 30.

[0071] FIG. 32 is a schematic, enlarged, perspective view of the air intake and spud cover assembly installed on the toilet of FIG. 30.

[0072] FIG. 33 is a schematic, perspective view of an air intake and spud cover assembly.

[0073] FIG. 34 is a schematic, partially sectioned view of an air intake and spud cover assembly.

[0074] FIG. 35 is a schematic, exploded perspective view of an air intake and spud cover assembly.

[0075] FIG. 36 is a schematic, perspective view of an air intake and spud cover assembly with a straight intake nozzle, mounted on a toilet.

[0076] FIG. 37 is a schematic, underside perspective view of the straight intake nozzle of FIG. 36, on an enlarged scale.

[0077] FIG. 38 is a schematic, perspective view of an air intake and spud cover assembly with a 90-degree, rectangular intake nozzle, mounted on a toilet.

[0078] FIG. 39 is a schematic, underside perspective view of the 90-degree, rectangular intake nozzle of FIG. 38, on an enlarged scale.

[0079] FIG. 40 is a schematic, perspective view of an air intake and spud cover assembly mounted on a toilet, with a toilet seat mounted intake nozzle.

[0080] FIG. 41 is a schematic, perspective view, on an enlarged scale, of the air intake and spud cover assembly mounted on the toilet, with the toilet seat mounted intake nozzle of FIG. 40, and with the toilet seat shown in both a lowered and a raised state. The toilet seat is shown partially sectioned to show the air intake nozzle in relation to the seat section for both seat positions.

[0081] FIG. 42 is a schematic, perspective view of the toilet seat mounted intake nozzle assembly.

[0082] FIG. 43 is a schematic, underside perspective view of the toilet seat mounted intake nozzle assembly of FIG. 42.

[0083] FIG. 44 is a schematic, perspective view of a urinal with an installed urinal air intake nozzle.

[0084] FIG. 45 is a schematic, perspective view of a urinal air intake nozzle.

[0085] FIG. 46 is a schematic, perspective view of an underside of the urinal air intake nozzle of FIG. 45.

[0086] FIG. 47 is a schematic, section view of an installed urinal air intake nozzle assembly.

[0087] FIG. 48 is a schematic, perspective view of a wall mountable switch button and motion sensor assembly.

[0088] FIG. 49 is a schematic, perspective view of a switch and motion sensor insert wall plate assembly.

[0089] FIG. 50 is a schematic, perspective view of an air intake and spud cover assembly with integrated button switch and motion sensor.

[0090] FIG. 51 is a schematic, perspective view of a toilet bowl assembly with a built-in push-to-connect style port.

[0091] FIG. 52 is a schematic, perspective view of a push-to-connect cartridge, toilet tank pipe connection, and cutaway view of an adapter block as an assembly.

[0092] FIG. 53 is a schematic, section view of a toilet with a pipe-tube conduit and push-to-connect cartridge installed in relation to the toilet bowl.

[0093] FIG. 54 is a schematic, perspective view of a push-to-connect cartridge, toilet tank pipe connection, and cutaway view of a miniature spud connection fitting as an assembly.

[0094] FIG. 55 is a schematic, perspective view of a urinal with an integrated push-to-connect style connection.

[0095] FIG. 56 is a schematic, perspective view of a rear of the urinal of FIG. 55, with an integrated push-to-connect style connection.

[0096] FIG. 57 is a schematic, side section view of a urinal with an integrated push-to-connect style connection and its interface with an overflow prevention channel built-in to the urinal.

[0097] FIG. 58 is a schematic, underside perspective view of a tank equipped toilet showing two embodiments of an integrated push-to-connect port. One embodiment is of a push-to-connect cartridge fitting permanently installed on the underside of the tank. The second embodiment is of a removable, bulkhead style passthrough air fitting.

[0098] FIG. 59 is a schematic, partially sectional, perspective view of a toilet tank showing the two embodiments of FIG. 58 as installed inside of the toilet tank.

[0099] FIG. 60 is a schematic, perspective view of a removable, bulkhead style passthrough air fitting.

[0100] FIG. 61 is a schematic, underside perspective view of the removable, bulkhead style passthrough air fitting of FIG. 60.

[0101] FIG. 62 is a schematic, perspective view of a removable, bulkhead style passthrough air and switch cable fitting.

[0102] FIG. 63 is a schematic, perspective view of a commercial, multi-fixture restroom facility depicting several of the embodiments being disclosed, used in combination.

[0103] FIG. 64 is a schematic, perspective of a toilet with an air intake retrofit attachment, urinal with built-in air intake port, two different wall mounted switches and sensors embodiments, and wall mounted cable management tray.

[0104] FIG. 65 is a schematic, perspective of a multi-fixture fluid pumping station with tubing and switch cable, power supply, and sink drain air exhaust connections.DETAILED DESCRIPTION

[0105] The following detailed description and the appended drawings describe and illustrate various example embodiments of toilet ventilation systems for residential and commercial buildings. The description and illustration of these examples are provided to enable one skilled in the art to make and use such according to this invention. They are not intended to limit the scope of the claims in any manner.

[0106] The framework for discussion to be used to organize the embodiments to be disclosed includes: fluid pump assemblies for multi-fixture toilet applications; wall outlet connections; drain water and vent pipe air exhaust connections; retrofit options for existing flushometer valve equipped toilet and urinal fixtures; and new toilet fixtures with integrated air exhaust tubing connections.

[0107] The term “fluid pump” as used herein, including in the claims, refers to a pump that is mainly used to pump air (e.g., malodorous air from a toilet) but can also operate when a liquid (e.g., water from the toilet assembly) is sucked into the fluid pump. A pump is distinguished from a fan in that a pump pulls a smaller volume of air at a higher pressure, as opposed to a fan that pulls a relatively larger volume of air a relatively lower pressure. The terms “fluidic pump” and “fluid pump” are used interchangeably herein and have the same meaning.

[0108] References made to the use of flexible tubing may be, for example, a nominal size of ⅜ inch outside diameter (O.D.)-¼ inch inside diameter (I.D.) flexible PVC tubing or a larger ½ inch O.D.-⅜ inch I.D. flexible PVC tubing. These examples are in keeping with the nominal tubing sizes but it is understood that other sizes may be used and is not meant to be a limiting factor for the scope of this disclosure.

[0109] FIGS. 1-4 are illustrated examples regarding fluid pump assemblies for multi-fixture toilet applications.

[0110] FIGS. 1-2 illustrate an example of a fluid pump case 1 and lid assembly 2 that can be used for a remote pump installation servicing a whole home or multiple toilets from a central location. Individual fluid pump assemblies 20 are contained inside the case 1, which includes a foam separator insert 6 to securely hold each fluid pump 20 and provide a measure of vibration and sound deadening. The case 1 and lid 2 may be made of, for example, plastic and include additional foam or vibration deadening materials to reduce noise and vibration. Connector ports for combined power 3 and remote button switch connectors 4 may be integrated into the lid 2, allowing for connections to be made without the need to open the case 1. A tubing passthrough port 5 built into the lid 2 allows for the separate air intake lines 11 from each toilet being served to connect to the individual fluid pumps 20 contained in the case 2. The air flows from each toilet to the respective fluid pump 20. While three fluid pumps 20 are illustrated in the figures, different size cases 1 that accommodate different numbers of fluid pumps 20 may be employed (e.g., 4, 5 or 6 pumps 20), or multiple cases 1 containing fluid pumps 20 may be employed. A push-to-connect tubing manifold 24 combines air exhaust lines 12 extending from each fluid pump 20 to a single (e.g., larger diameter) air exhaust tubing line 15 that exits through the tubing passthrough port 5. Air flowing out of the fluid pumps 20 is directed through the manifold 24 and into the air exhaust tubing line 15. This configuration allows for the multi-fluid pump equipped case 1 and lid 2 assembly to be delivered to the customer as a complete unit ready for power supply (e.g., electric power), control cables (e.g., for pump on / off control), and push-to-connect tubing connections to be easily connected at the build site where the toilet ventilation system is being installed. The lid 2 can generally remain in place during operation of the toilet venting system, with removal to re-program or replace any of the individual fluid pump assemblies 20 (or other components) making it easy to service.

[0111] FIGS. 3-4 illustrates another example of a remote pump station where individual fluid pump modules 30 are contained in a single enclosure 33 and lid 34 assembly for servicing multiple toilet or urinal fixtures. For illustrative purposes, internal wiring and tubing connections have been omitted from FIGS. 3-4 so that the primary component layout can be more clearly understood. The tubes and wiring may be similar to those illustrated in FIGS. 1-2. The enclosure 33 and lid 34 of this pump station unit is generally not meant to be opened regularly except for repair and maintenance. Power connections 3 and control switch connections 4, as well as individual timer relays 32 (which may, for example, have a digital LED interface), one for each toilet or urinal being served, are integrated into the lid 34. Lid push-to-connection tubing connection ports 27 are provided for individual air intake tubes (e.g., like those illustrated in FIGS. 1-2) and a connection port 28 for a single large air exhaust tube or hose (like that illustrated in FIGS. 1-2) that is the exhaust point for an internal air manifold 26, which combines the separate air exhaust lines 12 from each of the fluid pump modules 30. The exhaust tube or hose is sized so that air flow resistance is minimized and sufficient air flow speed can be maintained to allow for water that is accidentally ingested by the fluid pump modules 30 to be purged. Optionally, multiple ½ inch O.D. tubes 15 and push-to-connect reducer manifolds (like manifold 24 illustrated in FIGS. 1-2) may be employed for air exhaust instead of a single oversized hose (or tube) to allow for push-to-connect style fittings to be used throughout. This option avoids use of push-to-connect fittings in sizes greater than ½ inch, which may not be readily available. A pair 36 of fluid pump modules 30 typically function in tandem to serve a single toilet or urinal fixture, so Y-style push-to-connect connectors 25 may be used to combine the air intake lines 12 of the paired pump modules 36 for a single air intake port 27. A logic controller 31 may be used to control the operation of the individual fluid pump modules 30 in lieu of individual timer relays 32 for each tandem pump pair 36. If the logic controller 31 is employed, a digital human-machine interface (HMI) control screen may be provided as part of the lid 34 for system programming. The remote pump station may be powered by an external AC to DC power supply (converting from standard building AC voltage (e.g., generally 110-240 volts, “high voltage”) to a relatively lower power DC voltage of about 5-10 volts “low voltage”), allowing the remote pump station to operate as a low voltage appliance. Alternately, a waterproof alternating current (AC) to direct current (DC) power supply may be included within the remote pump station enclosure 33 and have an external electric cord and 120 VAC plug for connection to a standard wall outlet. FIGS. 63-65 illustrate an example of a multi-fixture pump station 40 (such as the remote pump station illustrated in FIGS. 3-4) installed in a commercial restroom environment, including an external power supply 41, air intake and exhaust line connections, and a wall mounted cable management tray 42 for retaining the lines and cables.

[0112] FIGS. 5-21 and FIG. 49 are illustrations regarding wall outlet connections. For new building construction projects, rough-in outlet boxes are typically installed by the electrical installers before wall panels are installed over the framing structure. A similar install procedure and workflow may be used to prepare tubing and switch connection points for a multi-fixture toilet ventilation system, which may reduce installation costs and reduce installation time.

[0113] FIG. 5 illustrates an example of a wall outlet cover plate 70 installed on a wall behind a toilet bowl 51 and toilet tank 50 assembly, which cover plate 70 provides a tubing connection for air exhaust and a connection point for a tank mounted switch 60 (e.g., on / off switch).

[0114] FIG. 6-7 are front and rear view illustrations, on an enlarged scale, of the wall outlet cover plate 70 of FIG. 5. If one is employing a standard blank wall outlet box cover 74, it may be modified (for example, using a CNC router) to include a rectangular cutout 76 for mounting a bulkhead mountable socket connector 62 and a circular cutout forming a tubing passthrough 71. A tapping plate 77 includes pre-drilled screw holes, allowing for the socket connector 62 to be mounted using self-tapping screws 66. Switch cable wires (not illustrated in FIGS. 6-7) are connected to the corresponding screw terminal ports 64 of the socket connector 62. The exhaust tubing lead 75, which connects to the remotely located fluid pump (e.g., those illustrated in FIGS. 1-4) is fed through the passthrough 71 and terminated with a push-to-connect straight connector fitting 72. The modified wall outlet cover plate 70 can then be installed to a low voltage outlet bracket 65 that has been previously mounted to the wall framing structure or wall board panel. Low voltage, as used herein means a voltage in the range of about 5-10 volts (V), whereas high voltage refers to a typical building voltage of 110-240 V. Once the toilet (50, 51) is installed, the switch connector plug 61 of the tank mounted switch 60 is connected to the socket connector 62 and the tubing 73 leading to the toilet (e.g., air intake shroud) installed to the open push-to-connect port 72 to complete installation.

[0115] FIGS. 8-13 and FIG. 49 illustrate examples of front and rear views of wall outlet assemblies showing different embodiments of insert brackets 90, which can be install in a conventional manner to a standard wall outlet box and allow for a standard rectangular wall outlet cover plate to be used to complete the installation. Insert brackets can be configured for mounting push-to-connect connectors, switch cable connectors, button switches, infrared sensors, switch relays, etc. in various combinations.

[0116] FIGS. 8-11 illustrate an insert bracket 90 configuration that includes a push-to-connect straight reducer fitting 72 for connecting to air tubing and a bulkhead mount electrical connector 62. The insert bracket 90 may be installed in typical single 83 or dual gang 82 outlet boxes. Standard rectangle style cover plates for dual outlet 80 and single outlet 85 variants can be used for an aesthetically acceptable installation that matches the facility decor.

[0117] FIGS. 12-13 illustrate a modified blank insert 91 that contains a switch (including its cord 63 and connector plug 62) that may be installed to a low voltage outlet bracket 84 as shown or with any standard outlet box. A standard rectangular style cover plate 85 can be used to complete the installation.

[0118] FIGS. 14-17 show front and rear views of a bracket 90 that includes a rectangular cutout 76 for a bulkhead style electrical connector 62, and circular cutout 78 for a push-to-connect straight reducer fitting 72. Adjacent to the rectangular cutout 76 may be holes 68 ready to accept self-tapping mounting screws 66 for the bulkhead style electrical connector 62. The backside of the circular cutout 78 is larger in diameter than the front side in order to form a potting compound cavity 69, which is used to contain a hotmelt (or epoxy) potting compound 79, which is used to secure the push-to-connect fitting 72 to the bracket 90. Outlet box mounting holes 86, which match the screw spacing for a standard wall outlet box in a building, are included in the bracket 90. Inset pockets with through holes 87 that accept threaded inserts 88 (or nuts) are included in the bracket 90 to accept mounting screws for a standard rectangle style wall outlet cover plate (e.g., cover plates 80, 85 shown in FIGS. 8-13) to complete installation.

[0119] FIGS. 18-21 illustrate an embodiment of an insertable bracket design for a switch plate (e.g., switch plate 91 shown in FIGS. 12-13) that uses a standard blank adapter insert 89 that is normally used as a non-functional switch or outlet to decoratively hide an unused outlet box in a wall. FIGS. 18-19 show front and rear views of a conventional blank adapter insert 89 modified by adding a circular cutout 93 added to accept an assembly of a switch (e.g., switch 92 shown in FIGS. 12-13), cord (e.g., cord 63 shown in FIGS. 12-13) and connector plug (e.g., connector plug 61 shown in FIGS. 12-13). The standard blank adapter insert 89 includes mounting holes for standard outlet boxes and wall cover plates used in buildings. FIGS. 20-21 shows front and rear views of the complete button switch insert assembly employing the modified blank adapter insert 89 of FIGS. 18-19. The assembly, including the switch 61 and attached cord 63 is fitted into the circular cutout 93 and fixed in place with a switch locking nut. A rectangular potting sleeve 94 is installed to form a wall surrounding the button switch body and wiring terminals. The resulting cavity is then back filled with a hotmelt (or epoxy) potting compound 95 to fully encapsulate and permanently bond the button switch to the modified adapter insert 89. The switch cord 63 is connected to a switch connector plug 62.

[0120] A similar example of an embodiment that uses a modified blank adapter insert 96 is depicted in FIG. 49, which shows a front view of a modified blank adapter insert assembly containing a switch 92 and an infrared proximity sensor 97 fitted into respective circular cutouts in the modified blank adapter insert 96. The insert assembly is shown with a standard wall outlet cover 85 installed to hide the outlet box opening mounted in a building wall.

[0121] FIGS. 22-27 illustrate examples of drain water and vent pipe air exhaust connections that may be employed to allow air exhaust tubing to be connected through existing building plumbing fittings that may be easily disassembled for maintenance or replacement.

[0122] FIGS. 22-24 illustrate an embodiment using a standard cleanout tee fitting 100 with a threaded clean out port 101, as are employed in many building plumbing systems. The cleanout port 101 accepts a removable cleanout plug 102 that screws into the cleanout port 101. The removable cleanout plug 102 includes a push-to-connect straight connector 103 or, alternatively, a push-to-connect cartridge. The cleanout plug 102 may include a raised square feature with flat facets to allow for engagement with a wrench during installation or removal of the cleanout plug 102 from the cleanout port 101. The back side of the raised feature may be a hollow cavity that may be used as a potting cavity 104 for back fill. A circular cutout 106 extends through the outer face of the cavity 104 and is sized to receive the push-to-connect straight connector 103. The push-to-connect fitting 103 is inserted through the circular cutout 106 and into the potting cavity 104 so that a short length of tubing that is long enough to extend beyond the opening of the cavity extends on the cavity side of the connector 103. A thermoset or epoxy potting compound 105 backfills the potting cavity 104, fully enclosing the push-to-connect fitting 103, with only a stub of the tubing protruding from the compound 105. Because the orientation of a typical cleanout port 101 relative to the cleanout T-fitting 100, as installed in a building plumbing system, is typically oriented perpendicular to an outlet of an inline joint fitting, a 90-degree push-to-connect stem fitting 108 may be used in conjunction with the straight connector fitting 103 to redirect the exhaust tubing 109 as needed for routing the toilet ventilation system. Additionally, the cleanout plug 102 may be modified to have more than one push-to-connect connector fitting 103, such as when one is ventilation more than one toilet or urinal.

[0123] FIGS. 25-27 illustrate an embodiment of a removable plug that can be used with a standard slip joint connection 110. Slip joints are typically used for conventional sink drainage pipe connections and typically use a compression nut 110, corresponding reducing washer 116, and threaded pipe end to secure and seal a smaller diameter section of pipe that has been “slipped” into the end of the threaded pipe. The open end of the sink drain trap 111 is inserted into the inline slip joint connection 110 of the slip joint tee pipe 112 for the primary drain connection. An exhaust plug fitting 113 is sized for a corresponding slip joint connection 110 and reducing washer 116 is installed in a tee-port of the slip joint tee pipe 112. The exhaust plug fitting 113 includes an outward facing cavity 117 on its top face that accepts a press fit push-to-connect cartridge fitting 114, and a through hole 118 to insert a portion of the plug 113 body. To install, the exhaust plug fitting assembly 113 is fitted with a reducing washer 116 and inserted into the larger threaded pipe end. The slip joint compression nut 110 is placed over the exhaust plug fitting 113 and reducing washer 116 and threaded onto the threaded pipe end. The exhaust tubing 115 is inserted into the push-to-connect cartridge 114 port to complete the installation. The slip joint tee 112 should be oriented so that the exhaust plug fitting 113 is oriented in a vertical position (as shown in FIG. 25) or angled no more than about 60-degrees from vertical so that water flowing through the drain does not have the opportunity to reach an opening in the through hole 118 under normal water drainage circumstances. The exhaust plug fitting 113 may also be configured with more than one push-to-connect cartridge fitting 114 to support multiple exhaust air tubing 115 connections, for example when connected to multiple toilets or urinals. FIGS. 63-65 illustrate a slip joint plug fitting 113 accepting the air exhaust tubing 115 connection from a multi-fixture pump station 40 in a commercial restroom environment.

[0124] FIGS. 28-50 illustrate examples of toilet ventilation systems applicable for retrofitting existing flushometer valve equipped toilets and urinals.

[0125] FIG. 28 depicts a typical prior art commercial toilet having a tankless toilet bowl fixture 140, commercial style toilet seat 141, spud cover and connecter 152, manually actuated flushometer valve 150, and vacuum breaker pipe assembly 151. The flushometer valve 150 is connected to the main water supply through a side exiting elbow pipe assembly 142 that extends into the wall directly behind the toilet (or urinal). FIG. 29 is an exploded view of a prior art vacuum breaker pipe assembly 151 and has a tailpiece nut 155, vacuum breaker connecting pipe 156, vacuum breaker bladder 157, vacuum breaker baffle 158, and vacuum breaker gasket 159. Battery powered and electrically actuated flushometer valves with built in occupancy sensors are also in widespread use with these commercial types of toilets and urinals.

[0126] FIGS. 30-43 illustrate an embodiment of an air intake system that can be retrofitted (e.g., through the use of a retrofit kit to add a toilet ventilation system) to a conventional flushometer equipped toilet assembly 143 (see also FIGS. 28-29 for a conventional toilet that can be retrofitted) and fitted with various intake nozzle designs to accommodate different toilet seat configurations.

[0127] FIG. 30 shows the air intake system including a 90-degree low profile intake nozzle 171, tubing adapter 172, and clamp on spud cover assembly 173 installed as an assembly on the top surface of a toilet bowl fixture 140. The intake nozzle 171 is directed toward the toilet bowl rim and extends beneath the closed toilet seat 141, between the toilet seat hinges 144.

[0128] FIGS. 31-32 shows front and rear perspective views of the air intake system installed on a toilet. The spud cover assembly 173 includes a front spud cover 174 and rear cover panel 175 that are clamped around the vacuum breaker connecting pipe 156. The front spud cover 174 includes a low profile tunnel section extending towards the toilet bowl rim that covers a tubing connection port of the tubing adapter 172, which functions as a transitional air manifold between the circular profile of the tubing connection to the low-profile, relatively flat rectangular form of the 90-degree low profile intake nozzle 171. The intake nozzle 171 and tubing adapter 172 may be affixed to the flat, top surface of the toilet bowl using silicone or similar waterproof adhesive. Air intake tubing 177 is routed from behind the toilet bowl fixture to the connection socket 182 (see also FIGS. 33-34) of the tubing adapter 172 where it is inserted and secured with a cyanoacrylate (or similar) adhesive.

[0129] FIGS. 33-35 further illustrate the configuration of FIGS. 30-32 of the intake system assembly of the toilet ventilation system. The intake nozzle 171 and tubing adapter 172 is shown as a slip fit connection with the nozzle being inserted into the tubing adapter opening, but other joining methods may be used depending on which suits the nozzle design being employed. The spud cover panels 174, 175 may be constructed, for example, of a durable plastic material or chrome plated brass or steel for improved aesthetic appearance. The tubing adapter 172 and intake nozzle 171 may, for example, be 3D printed plastic due to the enclosed chamber structure that may be easier to form than employing a process such as a single piece injection molding. Another alternative for fabrication of the intake nozzle 171 employs microchannel aluminum extrusions (such as those typically used for heat exchangers or liquid cooling applications), which effective use of such extrusions in the present application is possible due to the low air flow employed in the use of the toilet ventilation system. The front spud cover 173 includes a clamping collar feature 183 shaped to grip a standard vacuum breaker connection pipe 156 of a conventional toilet and clearance holes 181 for clamping screws 178. The back spud cover panel 174 includes a similar clamping collar feature 183 with inset nut pockets 180 that act as a rotation stop for clamping nuts 179 during installation. A tubing access opening 184 at the back of the spud cover assembly allows the air intake tubing 177 entering from behind the toilet fixture 140 and routed in a protected manner around the toilet spud fitting 153 (and cover 154, if present) and to the tubing socket 182 of the tubing adapter 172.

[0130] FIGS. 36-43 illustrate examples of alternative toilet intake nozzle embodiments that may be used with the spud cover assembly 170 and intake system discussed relative to FIGS. 30-35. FIGS. 36-37 show as installed and underside views, respectively, of a flat low-profile intake nozzle 190 configuration that is similar to the previously disclosed 90-degree intake nozzle 171 (of FIGS. 30-35) but without the downward oriented bend over the toilet bowl rim. This configuration better allows for the previously separate tubing adapter 172 to be incorporated with the nozzle 190 as a single piece construction while possibly incurring only a minor performance reduction due to the nozzle not being extended further downward into the toilet bowl. FIGS. 38-39 show as installed and underside views, respectively, of a rectangular profile intake nozzle 191 design that does not employ a low-profile form, which allows the nozzle 191 to be narrower and formed as a single piece construction while allowing for effective airflow. This configuration applies to toilets where the toilet seats have greater underside clearance so that a low-profile for the nozzle is not needed. FIGS. 40-43 show another embodiment of a toilet seat 141 mounted intake nozzle 192. The intake nozzle 192 is secured to the underside of the toilet seat 141 in proximity to rotational axis of the hinge of the toilet seat 141 using silicone or similar waterproof adhesive. The intake nozzle 192 includes a tubing socket 182 that accepts a short length of flexible (e.g., silicone rubber) tubing 193, which is inserted and secured with a cyanoacrylate (or similar) adhesive. The other end of the tubing 193 is similarly installed into a tubing socket 182 of a tubing adapter 194, thereby allowing the intake nozzle 192 to move with the seat as it is pivoted between raised or lowered positions. The fittings may also be configured to connect with oval or rectangular shaped tubing, which may improve bending and stretch characteristics of the tubing.

[0131] FIGS. 44-47 illustrate an example of a urinal intake nozzle 194, which can be installed on a conventional urinal 145 with a reasonably flat rim surface 146 surrounding the main bowl. The urinal intake nozzle 194 includes a flat underside surface that secures a body of the nozzle 194 to a location on the urinal rim surface using silicone or similar waterproof adhesive. The urinal intake nozzle 194 may have a downward oriented tubing socket 182 incorporated into a single piece design that accepts an air intake tube 177, which is inserted into the socket 182 and secured with a cyanoacrylate (or similar) adhesive. The air intake tube 177 is routed down an underside surface of the urinal 145 using, for example, adhesive or adhesive backed tubing guides.

[0132] FIGS. 48-50 illustrate examples of different embodiments for switch and occupancy sensors that can be used to trigger a fluid pump cycle of the toilet ventilation system. FIG. 48 shows a switch 92, which may be an illuminate button switch, and an infrared proximity sensor 97 in a shared enclosure 98 and sharing a common switch cord 63 and connector, which transmit electric power and control signals. Wire interconnections are contained within the enclosure cavity 98 that may be backfilled with a thermoset or epoxy potting compound during assembly. The assembled enclosure 98 may be wall mounted at the toilet or urinal with, for example, silicone or similar waterproof adhesive. FIG. 49 shows a blank adapter insert 96, which was discussed above. FIG. 50 shows a spud cover assembly 170 with an integrated illuminated button switch 92, which may be an illuminated button switch, and infrared proximity sensor 97. This may be employed with the assemblies discussed relative to FIGS. 30-43. The front spud cover panel 174 includes a flat surface region 185 with circular cutouts for the switch 92 and sensor 97. Wire interconnections are contained within the spud cover panel 174 and may be framed, for example, with a potting sleeve and backfilled with thermoset or epoxy potting compound in a similar manner as previously disclosed for modified blank adapter inserts for use with wall outlet boxes.

[0133] FIGS. 63-64 illustrate examples of air intake spud cover assemblies 170 (such as those shown in FIGS. 30-43 and 50) fitted to flushometer equipped toilets 143, outlet box mounted switch and sensor adapter inserts 96 (such as those shown in FIGS. 8-21 and 48-49), and wall mounted button switch and sensor assemblies 99 (such as those shown in FIGS. 8-21 and 48-49), installed in a multi-fixture (e.g., multiple toilets, multiple urinals or a combination of toilets and urinals) commercial restroom environment. Alternatively, the intake spud cover assemblies 170 and switch and sensor assemblies 99 may be those shown in FIG. 50.

[0134] FIGS. 51-62 are examples illustrating embodiments of a flushometer valve equipped toilets and urinals having air exhaust tubing connections integrated into the toilets and urinals. The terms “integrated” and “integral” as used herein, including the claims, means that the particular element or feature is formed as part of a whole single monolithic piece, rather than formed separately and then joined together.

[0135] FIGS. 51-53 show an embodiment of a toilet 200 with an integrated push-to-connect air intake tubing port 210 and with a direct air connection to the interior of the toilet bowl 201. The air connection is achieved using a length of pipe 212 (or tubing or a molded-in channel) with a 90-degree bend and one end within the toilet bowl 201. The molded porcelain body of the toilet 200 includes an access opening 214 at the rear of the toilet 200 and an access port 215 on the underside of the toilet bowl rim. An adapter block 213 is fitted into an access opening 214 to provide a cavity for a push-to-connect cartridge 211, which may be installed using, for example, a press fit, and provides a socket for a straight end of a pipe 212 to be inserted, with the joint sealed with, for example, cyanoacrylate (or similar) adhesive. The completed assembly is installed through a rear access opening 214 so that the 90-degree bend is oriented downwards through the access port 215 to provide an air connection to the interior of the toilet bowl 201. The adapter block 213 is secured in place with, for example, an adhesive sealant or epoxy to ensure a waterproof seal is achieved. An air intake tube 220 that extends from the toilet 200 to a fluidic pump is connected to the push-to-connect port 210 once the toilet fixture is installed. While push-to-connect fittings are discussed throughout this patent application, other types of connections (for example, threaded or interference fit) may be employed instead.

[0136] FIG. 54 illustrates another embodiment, similar to that employed in FIGS. 51-53, that uses the same conduit pipe 212, push-to-connect cartridge 211, and access port 215 as previously described but uses a miniature toilet spud fitting 216 as the basis for the access opening closeout. The spud fitting 216 is sized to match the diameter of the cartridge 211, which allows for a press-fit joint. The circular access opening 214 at the rear of the toilet bowl fixture 200 is sized to accept the inserted portion of the miniature spud fitting 216 and provides for an effective seal. The conduit pipe 212 is butted up (or inserted) to the inner opening of the push-to-connect cartridge 211 and secured in place with, for example, a thermoset or epoxy potting compound 217 backfill that also seals and waterproofs the assembly.

[0137] FIGS. 55-57 illustrate an embodiment of a urinal 202 with an integrated push-to-connect tubing connection. The urinal 202 may include a water overflow channel 238, similar in design to a standard bathroom sink, that includes an overflow inlet 237 positioned high up on the front wall surface of the urinal bowl 231. The overflow channel 238 connects the overflow inlet 237 to an overflow outlet 241 that is included in a urinal drain 232 and located below the drain cover 233 but before the drain trap 234. A tubing access port 238 sized to fit, for example, ⅜ inch O.D. tubing is formed through the wall of the overflow channel 238 in proximity to the opening in the overflow inlet 237. A tubing lead 239 is inserted into an access port 238 and secured using, for example, an adhesive. Plastic pipe (PE or PEX) may be employed instead of flexible tubing to improve overall strength and to allow for the inserted end to be flared before gluing, allowing for a more durable joint. This embodiment allows for malodorous air to be extracted from the urinal bowl 231 through the overflow inlet 237 opening and from the urinal drain 232 through the overflow outlet 241 opening. The tubing lead 239 may be routed in proximity to the sanitary drain connection outlet 235 and terminated with a push-to-connect straight connector 240, which allows it to be ready to accept an air intake tubing connection to the fluidic pump (such as those illustrated in FIGS. 1-4, 63 and 65). FIGS. 63-64 illustrates the urinal fixture 202 installed in a multi-fixture commercial restroom environment and controlled by switches and sensor assemblies 99.

[0138] The method being prescribed where air is drawn directly from the toilet or urinal bowl by an air moving device with sufficient vacuum pressure to suction water into the air conduit should be used in conjunction with a toilet ventilation system with the following characteristics: the type of air mover may be of a diaphragm pump design that is also capable of pumping water (i.e., a fluidic pump); the tubing connections, pump design, and system architecture are leak free and resistant to water damage; and the air exhaust may be expelled into a sanitary drain water and vent system. The fluidic pump and accompanying components of the toilet ventilation system, whether pre-assembled or in a kit form, as described herein, or as described in U.S. patent application Ser. No. 17 / 882,676, filed Aug. 8, 2022, to Hung, which is incorporated herein in its entirety by reference, meets these characteristics.

[0139] FIGS. 58-62 illustrate examples of embodiments of toilet ventilation systems that provide a built-in tubing connection port for tank equipped toilets 202 that use an air intake shroud 203 of the type disclosed in U.S. patent application Ser. No. 17 / 882,676, filed Aug. 8, 2022, to Hung, which is incorporated herein in its entirety by reference. This toilet ventilation system has the air intake shroud 203 installed over a toilet tank overflow pipe 204 for malodorous air extraction from the toilet bowl. FIGS. 58-59 illustrate two different embodiments of a toilet ventilation system installed to the same toilet tank 202. The first embodiment uses a circular cutout 251 located at an accessible position on a bottom wall of the toilet tank 202, which allows for installing a bulkhead style push-to-connect straight connector 250, which may have a threaded body that is fixed in place by installing a nut and a sealing gasket on each side of bulkhead. A tubing lead 252 that is long enough to reach a connection port of the air intake shroud 203 is installed to the push-to-connect port 250 on the inside of the toilet tank 202, allowing for the toilet tank 202 to be delivered to a customer prepared for final fluid pump connection after the toilet is installed.

[0140] Another embodiment depicted in FIGS. 58-61 uses a fill valve bulkhead fitting 255 that may be essentially identical to a conventional fill valve 254 passthrough fitting, sharing the same dimensions, design features, and components, except limited to a short stub section containing a cartridge fitting 257, tubing lead 253, and potting compound backfill 258. An additional circular passthrough hole 251 may be provided in the bottom of the toilet tank 202 that could be a mirrored layout of the fill valve passthrough hole, allowing for the two items to be relocated from side to side if needed for a particular bathroom and toilet installation. The bulkhead fitting includes a hollow threaded body 261 with an attached end flange 259, a sealing gasket 260, and finger tight flange nut 262. The sealing gasket 260 is installed onto the threaded body before being inserted into the circular passthrough hole 251 from the tank side. The flange nut 262 is installed from the underside of the tank 202 and causes the gasket 260 to form a watertight seal between the end flange 259 and bottom of the toilet tank 202 once tightened. A tubing lead 253 that is long enough to reach the connection port of the air intake shroud 203 is inserted into the open port side of, for example, a push-to-connect cartridge 257 and secured with, for example, cyanoacrylate (or similar) adhesive. The tubing assembly is then inserted into a hollow center passthrough of the bulkhead fitting 250 with just the push-to-connect cartridge 257 connection port protruding from the stick-out end of the bulkhead fitting 250. The hollow cavity may be backfilled, for example, with potting compound 258 to secure the assembly in position and provide a watertight seal.

[0141] FIG. 62 illustrates another embodiment of a fill valve style bulkhead fitting 265 that provides for passthrough tubing and switch cable connections. The fitting may be the same as the previously disclosed bulkhead fitting 255 (as shown in FIGS. 58-61) except for an additional notch cutout 261 that allows for a switch cable lead 267 to enter the body of bulkhead fitting 265 without interfering with the functionality of the push-to-connect cartridge 257. The switch cable lead 267 is of sufficient length to reach a tank mounted activation switch 60 for the toilet ventilation system and be secured above water under normal operation. The cable may be secured with, for example, potting compound 258 along with the tubing 253 and cartridge 267. A switch cable socket connector 268 is used to terminate the switch cable lead 267 on the inside of the toilet tank while a plug connector 269 is used to terminate the switch cable lead 267 on the exterior side of the toilet tank. A blanking plug can be installed by the manufacturer for toilet tanks that do not employ a toilet ventilation system.

[0142] Those with ordinary skill in the art will appreciate that various modifications and alternatives for the described and illustrated embodiments can be developed in light of the overall teachings of the disclosure, and that the various elements and features of one example described and illustrated herein can be combined with various elements and features of another example without departing from the scope of the invention. Accordingly, the particular examples disclosed herein have been selected by the inventor(s) simply to describe and illustrate examples of the invention and are not intended to limit the scope of the invention or its protection, which is to be given the full breadth of the appended claims and any and all equivalents thereof.

Examples

Embodiment Construction

[0105]The following detailed description and the appended drawings describe and illustrate various example embodiments of toilet ventilation systems for residential and commercial buildings. The description and illustration of these examples are provided to enable one skilled in the art to make and use such according to this invention. They are not intended to limit the scope of the claims in any manner.

[0106]The framework for discussion to be used to organize the embodiments to be disclosed includes: fluid pump assemblies for multi-fixture toilet applications; wall outlet connections; drain water and vent pipe air exhaust connections; retrofit options for existing flushometer valve equipped toilet and urinal fixtures; and new toilet fixtures with integrated air exhaust tubing connections.

[0107]The term “fluid pump” as used herein, including in the claims, refers to a pump that is mainly used to pump air (e.g., malodorous air from a toilet) but can also operate when a liquid (e.g., ...

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] The present application is a continuation of PCT patent application No. PCT / US2024 / 019438, filed Mar. 11, 2024, based on and claiming priority to U.S. provisional patent application 63 / 489,757, filed Mar. 11, 2023, both of which are incorporated herein by reference in their entirety.TECHNICAL FIELD

[0002] This invention relates generally to toilets, and more particularly to systems for addressing odors emanating from toilets.BACKGROUND

[0003] Ever since the invention and widespread adoption of the flushing toilet many inventions have been disclosed working towards solving the toilet odor problem. It is well understood within the art that the most effective way to eliminate toilet odor is an approach that captures the malodorous air before it escapes from the confines of the toilet bowl. While most of these inventions are somewhat effective in addressing the problem, the widespread adoption of toilet odor ventilation systems has not yet happened. These solutions are typically not commercially viable due to the high cost and complexity of the prescribed apparatus and its installation and ongoing maintenance. Prescribed solutions may also be unacceptable aesthetically or require special installations that make them incompatible with existing toilet fixtures and not practical for widespread adoption or compliance with existing building codes.

[0004] Previous attempts to solve this problem have typically employed fans, blowers, and other rotating vane type air movers that by nature move high volumes of air but with relatively low pressures which in turn require the use of appropriately sized hose or ducting to facilitate low resistance air flow. Without a proper understanding of the minimum air exchange rate required to mitigate odors within an enclosed volume, the solutions proposed have typically been over designed to deliver more air flow than required and disregarding other types of air movers deemed to have insufficient performance from consideration. In other cases, a specification error is made where the proposed solution assumes sufficient air flow can be achieved using these high flowing air mover types but flowing through small diameter tubing. This is an unreasonable expectation due to increasing resistance to fluid flow as the diameter and cross-sectional area of the tubing decreases and as tubing length increases—not enough pressure.

[0005] Because restroom facilities in commercial or public buildings typically utilize tankless toilets and urinals that utilize a flushometer type valve for flushing, and since Flushometer equipped fixtures do not include a cistern with an overflow pipe configuration that could be used for air extraction, as in typical home toilets, an alternative method for extracting air from the proximity of the toilet (or urinal) bowl will need to be utilized.

[0006] The basic design and function of a flushometer valve is described by Sloan, U.S. Pat. No. 1,114,398 while an early embodiment of a vacuum breaker for use with a flushometer valve is described by Kenney, U.S. Pat. No. 2,370,247. The vacuum breaker for a flushometer valve assembly, in most cases, uses a special connection pipe with vacuum relief cutaway holes located at the top end of the pipe where the rubber vacuum breaker bladder is inserted. These holes are sealed shut by the vacuum breaker which expands under pressure when water passes through the body of the vacuum breaker during a flushing event. This prevents water from escaping through the vacuum relief holes during the pressurized portion of the flushing cycle but returns to the open condition after completion to allow air to enter the connection pipe to prevent a vacuum condition from forming. In general, most building codes require a vacuum breaker to prevent the siphoning of water backwards into the supply line. The vacuum breaker function for any toilet or urinal fixture must therefore be maintained for any proposed toilet ventilation solutions to be viable. A solution that attempts to integrate a vacuum air exhaust function in a directly coordinated manner with the flushometer and vacuum breaker system would be complex and difficult to implement.

[0007] A method that has been previously suggested is to provide an air intake pipe or duct that can be secured to the rim of the toilet bowl and connected to an air mover as described by Cogswell, U.S. Des. Pat. No. D692,995 and Chun, U.S. Pat. No. 4,876,748. These need to be of sufficient size to allow for the required air flow rate of malodorous air to be exhausted by the attached air mover and could be quite large if the vacuum pressure being generated by the air mover is minimal. However, for a toilet that may be installed in a public or shared facility it would be advantageous to have a solution that could be integrated unobtrusively with the toilet fixture to reduce the chance of physical damage, allow for easy cleaning and washdown, and for a clean looking aesthetic.

[0008] Another widely accepted methodology is the use of a special toilet seat design that incorporates air exhaust channels into the body of the seat structure or as part of the seat mounting and pivot hinge assembly which is then connected to an air mover. Some examples of this seat type solution have been proposed by Sowards, U.S. Pat. No. 3,649,972; Agelatos et al., U.S. Pat. No. 4,944,045; and Wolfe, U.S. Pat. No. 6,772,449 B1. In many cases, the toilet seat can be designed to be retrofit to existing toilets. The downside of this type of solution is the extra cost of the specially designed toilet seat and the difficulty matching the range of finished dimensions and aesthetics of different toilet bowl models currently on the market. The toilet seat approach also typically requires a flexible, accordion style, air hose to be connected to the seat to allow the seat to be lifted open during use or cleaning. The flexible hose is difficult to conceal and may be prone to damage and is difficult to clean due to the pleating which can trap fluids and debris. A better solution would allow for an existing commercial toilet to be updated with an air exhaust tube without the need to replace the toilet seat in an aesthetically acceptable manner, durable, and easy to clean.

[0009] Denzin, et al., U.S. Pat. No. 6,279,173B1 describes a blower fan mounted internally within the toilet tank that encapsulates the top of the overflow and requires that the blower not generate enough vacuum pressure to suction water into the system.

[0010] For a toilet seat type solution, Character, U.S. Pat. No. 8,239,973B describes the use of a quick connection type fitting for an air hose connection to an air mover. This is acceptable for this type of solution because the air gap between the underside of the seat and the top of the toilet bowl rim prevents water from being suctioned into the air hose in case of an accidental overflow event.SUMMARY

[0011] An embodiment contemplates a toilet ventilation system for operatively engaging multiple toilets, multiple urinals, or both the toilets and the urinals, the toilet ventilation system comprising: a pump case having a housing and a lid removably mounted on the housing, the pump case including inlet pass-throughs for air lines configured to direct air from the toilets or urinals into the pump case, cable connector ports configured to operatively engage cables connecting toilet ventilation activation switches to the pump case, a pass-through for an exhaust air line configured to direct air out of the pump case; and a plurality of fluid pumps mounted in the pump case and configured to connect to the air lines, cables and exhaust air line.

[0012] An embodiment contemplates a toilet ventilation system for operatively engaging a flushometer toilet, the toilet ventilation system comprising: an air intake nozzle extending from a toilet bowl of the flushometer toilet toward a spud cover; air intake tubing operatively engaging the air intake nozzle and extending past the spud cover; and a spud cover assembly mounted around the spud cover and a vacuum breaker connecting pipe of the flushometer toilet, and configured to allow the air intake line to pass through the spud cover assembly to a back side of the flushometer toilet.

[0013] An embodiment contemplates a toilet ventilation system for operatively engaging a urinal, the toilet ventilation system comprising: a tubing adapter mounted on a front, generally horizontal surface of a bowl of the urinal, and including an air intake nozzle open to the bowl of the urinal and a tube connection outlet on an underside of the tubing adapter outside of the bowl; and air intake tubing operatively engaging the tube connecting outlet and extending down along a surface of the urinal towards a bottom of the urinal.

[0014] An embodiment contemplates a toilet ventilation system integrated into a urinal, the toilet ventilation system comprising: a bowl; a water overflow channel extending within the urinal having an overflow inlet open to the bowl on an upper portion of a front wall of the bowl, an overflow outlet to a drain of the bowl, and a tubing access port within the urinal; and air intake tubing operatively engaging the tubing access port and extending to a back of the urinal.

[0015] An embodiment contemplates a toilet ventilation system integrated into a flushometer toilet, the toilet ventilation system comprising: a bowl having a channel molded therein, with the channel having a first end open to an underside of a toilet bowl rim and a second end open to a back side of the flushometer toilet; and an adapter block configured to operatively engage the second open end and connect to an air intake tube that is configured to direct air toward a fluid pump.

[0016] An embodiment contemplates a toilet ventilation system integrated into a toilet, the toilet ventilation system comprising: a bowl; a tank operatively engaging the bowl, including a cutout in a bottom or side wall of the tank; a toilet tank overflow pipe mounted within the tank; an air intake shroud mounted over a top of the toilet tank overflow pipe; a fitting sealingly secured in the cutout, and having a hollow center configured to allow for airflow therethrough; and an air tubing lead operatively engaging the hollow center at a first end and operatively engaging the air intake shroud a second end.

[0017] An embodiment contemplates a toilet ventilation system integrated into a toilet, the toilet ventilation system comprising: a bowl; a tank operatively engaging the bowl, including a cutout in a bottom or side wall of the tank; a toilet tank overflow pipe mounted within the tank; an air intake shroud mounted over a top of the toilet tank overflow pipe; a fitting sealingly secured in the cutout, and having a hollow center configured to allow for airflow therethrough; and an air tubing lead operatively engaging the hollow center at a first end and operatively engaging the air intake shroud a second end.

[0018] An embodiment contemplates a kit made up of elements of a toilet ventilation system.

[0019] The present toilet ventilation system addresses the shortcomings that will facilitate the adoption of toilet odor ventilation systems for new construction projects for both residential and commercial building applications. The embodiments disclosed herein may be used individually or in combination within a given building construction project as each unique building application requires.

[0020] The embodiments of the toilet ventilation system disclosure include: fluid pumps for single and multi-fixture toilet applications; wall outlet connections for electrical and air flow; drain water and vent pipe air exhaust connections; retrofit options for existing flushometer valve equipped toilets and urinals; and / or toilets and urinals with integrated toilet ventilation.

[0021] With regard to fluid pumps employed in toilet ventilation systems for multi-fixture toilet applications, an embodiment of this solution comprises a case capable of housing multiple individual fluid pump assemblies that may be provided to consumers as a ready to connect option for both air, switch signal, and power connections. The fluid pump assemblies may also be employed with a single toilet retrofit kit. The case contains all the tubing, manifolds, and wiring harness to each pump internally. The case containing the fluid pump assemblies may provide noise reduction when in operation. In the event of individual pump failure, a replacement fluid pump assembly can be easily swapped with the failed unit.

[0022] A case may house individual fluid pump modules rather than complete fluid pump assemblies. This allows for a denser concentration of fluid pump modules to be able to serve more toilets from a single case and for the inclusion of a programmable logic controller for more sophisticated operation control. Push-to-connect air intake and exhaust ports, switch signal connections, power, and programming interface for each fixture may be provided on the exterior of the case while all tubing, manifolds, and control wiring may be contained internally. A digital interface screen may be provided in lieu of individual (per toilet fixture) timer controls for programming.

[0023] With regard to wall outlet connections for a toilet ventilation system, it is beneficial when a selection of wall outlet plates with the push-to-connect air connection, switch cable connection, button switch, motion sensor, or any combination thereof are available to installers. These wall outlet plates are dimensionally and aesthetically compatible with standard outlet boxes and cover plates that are used in typical building construction and allow for the required tubing and signal wire runs to be installed at the same time as other utilities are being installed within the building construction project's normal workflow. An embodiment has a special bracket design that matches the dimensional and screw mounting requirements for a standard rectangle style wall outlet. The bracket incorporates a rectangular window and mounting screw points for a bulkhead style socket connector with screw terminals and a circular cutout that accommodates a push-to-connect straight tubing connection fitting. This finished bracket assembly is then installed in a low-voltage outlet box or bracket in a similar manner to a regular electrical outlet or wall switch, air and signal connections made, and finished with a standard wall outlet cover. These wall outlets may be replicated for mounting button switches, motion sensors, low voltage power, relay switches, etc.

[0024] With regard to drain water and vent pipe air exhaust connections for a toilet ventilation system, it is beneficial for both residential and commercial building applications when a configuration for connecting air exhaust tubing to an existing sanitary drain water and vent pipes are available to installers that is compatible with existing fittings and allow for easy replacement should the need arise to replace a failed or damaged push-to-connect connection port. An embodiment of this consists of a threaded drain water clean out plug with an integrated push-to-connect connection cartridge. The cartridge may be mounted as a compression fit insert or permanently fixed in a cavity and water-proofed using a potting compound backfill. Because a drain water cleanout port is typically configured as the perpendicular outlet of an inline tee fitting, a 90-degree push-to-connect stem fitting may be used in conjunction with embedded straight fitting to redirect the exhaust tubing connection as needed for exhaust tube routing.

[0025] For situations where a sink drainpipe exhaust connection is more suitable, a slip joint tee fitting may be installed to support an air exhaust tubing connection. Typically, this slip joint tee is used to connect a suitably sized drain water pipe. However, an embodiment consisting of a plug fitting that is suitably sized for the slip joint fitting and incorporating one, or multiple, push-to-connect cartridge fittings may be installed instead.

[0026] With regard to toilet ventilation system retrofit options for existing flushometer valve equipped toilets and urinals, an air intake nozzle may be attached to the toilet bowl or urinal in proximity to the bowl opening, which is used to allow for malodorous air to be extracted. These air intake nozzle embodiments are relatively small due to the relatively low air flow, relatively high-pressure air exhaust from a fluid pump, whereas a system that uses a relatively high air flow, relatively low-pressure air mover, such as with a fan, requires significantly larger air intake manifold channels to allow for sufficient air flow. Since only a small and objectively quantifiable amount of malodorous air needed to be exhausted when it is captured directly from the toilet bowl during use while still contained in a relatively closed volume, the small airflow, high pressure fluid pumps provide the desired function. The benefits of this approach include a reduction in the size of system components, allowing the use of flexible tubing for easier installation and for long exhaust tubing runs where required, fluid pumps that are resistant to damage if water is accidentally taken in, and compatibility with existing commercially available tubing and small diameter pipe types. The total cross-sectional area of the intake nozzle opening is generally equal to or greater than the cross-sectional area of the inside diameter (I.D.) of the attached air intake tube. Since an example of the suggested tubing diameter is ¼-inch I.D. the intake manifold body can be quite compact, allowing it to pass through a small gap between the toilet bowl rim and an attached toilet seat. These intake nozzle components may be 3D printed as single piece bodies or assembled from molded plastic, clam shell component pieces. Microchannel aluminum extrusion sections may also be incorporated as an air flow conduit where a small gap passthrough is employed. In conjunction with the intake nozzle, a tubing adapter is used to transition between the profile shape of the intake nozzle body and a connection port for the air intake tubing. The end of the air intake tubing is plugged into the adapter port to provide a leakproof connection between the air intake assembly and the fluidic pump.

[0027] Employing the diaphragm type fluidic pump allows the pump to operate in a manner in which the pump is resistant to water damage, which allows for a direct air exhaust line connection to be made with the interior of the toilet bowl. When direct air exhaust line is connected to the interior of the toilet bowl (or urinal bowl), a chance exists that under some circumstances, the toilet ventilation system may ingest some water with the air. For pumps and fans that cannot operate or will be damaged if water is ingested, then the risk of water ingestion with a direct air exhaust line to the interior of the bowl risks malfunctioning or permanent damage to the pump or fan. Thus, when using the term “fluidic pump” herein, including the claims, this means a pump that primarily draws in air but can also handle drawing water in with the air without pump malfunctioning or damage to the pump. The terms “fluidic pump” and “fluid pump” are used interchangeably herein and have the same meaning. As an added benefit, such a system when connected to a sanitary drainpipe for exhaust diverts water to an alternate sanitary drain in the event of an overflow condition to prevent or reduce the amount of water breaching containment of the toilet bowl (or urinal).

[0028] For flushometer equipped toilets, a protective housing component may be installed to conceal and protect the air intake tubing and provide a route extending from just behind the toilet seat to the rear of the toilet bowl fixture. The housing may be designed as a clamp-on attachment to the flushometer connection pipe and be constructed from durable plastic material, chrome plated brass, stainless steel, zinc, or other material that may be finished to resist rusting. This housing may enclose or serve as a replacement for the toilet spud fitting cover.

[0029] For fluid pump operation control in a toilet ventilation system, a switch or switch in combination with a motion sensor may be used for each connected fixture. A surface mountable switch cover assembly that includes a switch, motion sensor, and signal cable with connector can be adhesive mounted to a wall in proximity to the toilet or urinal.

[0030] For an outlet box installation, a wall outlet bracket assembly that includes provision for a switch or switch and motion sensor combo can be used for installation during building renovation or new building construction.

[0031] For flushometer equipped toilets, the switch and motion sensor may be incorporated into the design of the previously described “toilet spud cover” for a complete and ready to install upgrade unit that further simplifies installation for the installer.

[0032] With regard to new toilets and / or urinals with integrated air exhaust tubing connections in a toilet ventilation system, a toilet bowl or urinal body can be manufactured with an integrated push-to-connect connection port and air exhaust conduit leading from the connection fitting to the toilet bowl or urinal interior ready for tubing connection to a fluid pump for exhaust.

[0033] For a toilet bowl of a toilet ventilation system, the molded porcelain body can be designed to include a formed access opening where a length of pipe with a 90-degree bend on one end is installed such that the bent end emerges through an opening on the underside of the toilet bowl rim. The pipe may extend through the existing flush passage with the straight end of the pipe engaging an adapter block that transitions to a push-to-connect cartridge fitting. The adapter is fitted into the access opening and secured in place with an adhesive sealant or epoxy to ensure a waterproof seal is achieved and providing an air exhaust connection port at the rear of the toilet bowl. Another embodiment of a toilet ventilation system incorporates a push-to-connect cartridge or straight connector fitting embedded within a miniaturized toilet spud fitting that is used to plug the access opening with an expanded gasket seal instead of adhesive.

[0034] For a urinal of a toilet ventilation system, the urinal may be designed with a water overflow channel, like that of a vanity sink, that includes a small opening in the interior of the bowl and an internal channel connecting to a drainpipe just below the drain opening. A small access port may be added to the overflow channel that allows for the end of a flexible tube to be installed and permanently secured in place using adhesive sealant or epoxy. The other end of the flexible tube is routed to the rear of the urinal in proximity to the primary drain connection and a push-to-connect straight connection fitting installed to be ready to accept a tubing connection to the fluid pump for exhaust.

[0035] An example of a toilet ventilation system for a toilet equipped with a toilet tank that uses an intake shroud assembly (as prescribed by U.S. patent application Ser. No. 17 / 882,676, filed Aug. 8, 2022, by Hung) or other solutions to be able to use the overflow pipe and flush channels as an air exhaust conduit to the toilet bowl, a bulkhead style push-to-connect straight connector fitting may be installed in the bottom of the tank for tubing connections to be made on each side of the bulkhead. This fitting is inserted through an appropriately sized hole and secured in place with fixing nuts and gaskets for a waterproof installation. Another embodiment includes a bulkhead style fitting with an integrated push-to-connect cartridge and tubing lead for connection to an air intake shroud installed to the overflow pipe. An additional passthrough hole is provided in the bottom of the toilet tank that can be a mirrored layout of the fill valve passthrough hole. The passthrough fitting may be similar in design to the fill valve compression joint, except it is limited to a short stub section, enough to contain just the cartridge fitting, tubing lead, and potting compound backfill. Another embodiment may be of a similar configuration but also include passthrough for a switch cable patch cord with a socket connector for the button switch for the interior of the tank and a plug connector for a switch extension cable for the exterior of the tank.

[0036] It is beneficial for the present toilet venting system to have system components that make the addition of the toilet venting system more compatible with methods and standards currently used by the construction trades. For plumbing and mechanical trades, the system components are compatible with commercially available pipe, tubing, and air fittings. For the electrical trades, the power and signal componentry use commercially available outlet boxes, cover plate systems, wire, and cable. The system components also are integrated more aesthetically into the design of the finished bathroom with additional installation options for designers and builders to have at their disposal.

[0037] With regard to fluidic pump specifications for multi-fixture toilet applications of toilet ventilation systems, the basic tenet of providing each fixture with its own fluid pump, switch, exhaust and power outlet connection is an acceptable solution. Optionally, it may be beneficial to locate these fluid pumps together remotely and to share power and exhaust connections and have the ability to control the operation of the fluid pumps as a group where desired. Furthermore, a fluid pump system specifically configured for a multi-fixture restroom facility's exhaust connections may be a more desirable solution than serving each fixture with an individual fluid pump at each fixture position or as a cluster of pumps located together remotely. A programmable logic controller may be included with this type of multi-fixture fluid pump system since the ventilation cycle may be run intermittently without human interaction to meet air quality objectives.

[0038] For commercial or public buildings, a toilet ventilation system for a multi-occupant and multi-fixture restroom facility provides the same benefit of improved indoor air quality as well as reduced energy costs by decreasing the requirements for minimum ventilation system air exchange per hour. Specific air exchange rates vary by applicable building or ventilation code requirements, however, a minimum of 50 cubic feet per minute of continuous ventilation per toilet or urinal can be used as a general guideline (at the time of writing) for a commercial restroom facility in the United States. By improving indoor air quality through a low air flow, point odor extraction approach at each toilet or urinal, a reduced continuous air exchange output for the restroom facility may be acceptable.

[0039] Additional understanding of these examples can be obtained by review of the detailed description below, and the appended drawings.BRIEF DESCRIPTION OF THE DRAWINGS

[0040] FIG. 1 is a schematic, perspective view of a multiple fluid pump case.

[0041] FIG. 2 is a schematic, perspective view of the multiple fluid pump case with its lid opened.

[0042] FIG. 3 is a schematic, perspective view of a fluid pumping station without a lid shown.

[0043] FIG. 4 is a schematic, perspective, partially exploded view of a fluid pumping station and lid assembly, with connections and control interfaces illustrated.

[0044] FIG. 5 is a schematic, perspective view of a toilet and a wall outlet having an air and switch connection plate.

[0045] FIG. 6 is a schematic, front perspective view of a wall outlet having an air and switch connection plate.

[0046] FIG. 7 is a schematic, rear perspective view of a wall outlet having a switch connection plate assembly mounted to a low voltage wall outlet bracket.

[0047] FIG. 8 is a schematic, perspective view of a 2-gang, dual voltage wall outlet box with a 120 VAC (volts of A / C current) outlet in combination with an air-switch connection insert panel assembly.

[0048] FIG. 9 is a schematic, rear perspective view of a 2-gang, dual voltage wall outlet box with a regular 120 VAC outlet in combination with an air-switch connection insert panel assembly.

[0049] FIG. 10 is a schematic, perspective view of a single, low voltage wall outlet box with an air-switch connection insert panel assembly.

[0050] FIG. 11 is a schematic, rear perspective view of a single, low voltage wall outlet box with an air-switch connection insert panel assembly.

[0051] FIG. 12 is a schematic, perspective view of a single, wall outlet box with a button switch insert panel assembly.

[0052] FIG. 13 is a schematic, rear perspective view of a single, wall outlet box with a button switch insert panel assembly.

[0053] FIG. 14 is a schematic, perspective view of an air-switch connection insert bracket.

[0054] FIG. 15 is a schematic, rear perspective view of an air-switch connection insert bracket.

[0055] FIG. 16 is a schematic, perspective view of an air-switch connection insert assembly.

[0056] FIG. 17 is a schematic, rear perspective view of an air-switch connection insert assembly.

[0057] FIG. 18 is a schematic, perspective view of a button switch insert panel.

[0058] FIG. 19 is a schematic, rear perspective view of a button switch insert panel.

[0059] FIG. 20 is a schematic, perspective view of a button switch insert panel assembly.

[0060] FIG. 21 is a schematic, rear perspective view of a button switch insert panel assembly.

[0061] FIG. 22 is a schematic, perspective view of a drain water (DW) cleanout tee fitting with an exhaust air cleanout plug assembly installed.

[0062] FIG. 23 is a schematic, perspective view of a threaded drain water exhaust air cleanout plug assembly.

[0063] FIG. 24 is a schematic, rear perspective view of a threaded drain water exhaust air cleanout plug assembly.

[0064] FIG. 25 is a schematic, perspective view of a sink drain trap assembly and slip joint tee pipe with an air connection plug fitting installed.

[0065] FIG. 26 is a schematic, underside perspective view of a slip joint air connection plug fitting.

[0066] FIG. 27 is a schematic, exploded perspective view of a slip joint air connection plug fitting assembly.

[0067] FIG. 28 is a schematic, perspective view of a commercial style toilet with flushometer valve (prior art).

[0068] FIG. 29 is a schematic, exploded perspective view of a flushometer vacuum breaker assembly (prior art).

[0069] FIG. 30 is a schematic, perspective view of a flushometer equipped toilet with an air intake and spud cover assembly. The toilet seat has been sectioned mid-way to show the air intake fitting in relation to the seat section.

[0070] FIG. 31 is a schematic, enlarged, perspective view of the air intake and spud cover assembly installed on the toilet of FIG. 30.

[0071] FIG. 32 is a schematic, enlarged, perspective view of the air intake and spud cover assembly installed on the toilet of FIG. 30.

[0072] FIG. 33 is a schematic, perspective view of an air intake and spud cover assembly.

[0073] FIG. 34 is a schematic, partially sectioned view of an air intake and spud cover assembly.

[0074] FIG. 35 is a schematic, exploded perspective view of an air intake and spud cover assembly.

[0075] FIG. 36 is a schematic, perspective view of an air intake and spud cover assembly with a straight intake nozzle, mounted on a toilet.

[0076] FIG. 37 is a schematic, underside perspective view of the straight intake nozzle of FIG. 36, on an enlarged scale.

[0077] FIG. 38 is a schematic, perspective view of an air intake and spud cover assembly with a 90-degree, rectangular intake nozzle, mounted on a toilet.

[0078] FIG. 39 is a schematic, underside perspective view of the 90-degree, rectangular intake nozzle of FIG. 38, on an enlarged scale.

[0079] FIG. 40 is a schematic, perspective view of an air intake and spud cover assembly mounted on a toilet, with a toilet seat mounted intake nozzle.

[0080] FIG. 41 is a schematic, perspective view, on an enlarged scale, of the air intake and spud cover assembly mounted on the toilet, with the toilet seat mounted intake nozzle of FIG. 40, and with the toilet seat shown in both a lowered and a raised state. The toilet seat is shown partially sectioned to show the air intake nozzle in relation to the seat section for both seat positions.

[0081] FIG. 42 is a schematic, perspective view of the toilet seat mounted intake nozzle assembly.

[0082] FIG. 43 is a schematic, underside perspective view of the toilet seat mounted intake nozzle assembly of FIG. 42.

[0083] FIG. 44 is a schematic, perspective view of a urinal with an installed urinal air intake nozzle.

[0084] FIG. 45 is a schematic, perspective view of a urinal air intake nozzle.

[0085] FIG. 46 is a schematic, perspective view of an underside of the urinal air intake nozzle of FIG. 45.

[0086] FIG. 47 is a schematic, section view of an installed urinal air intake nozzle assembly.

[0087] FIG. 48 is a schematic, perspective view of a wall mountable switch button and motion sensor assembly.

[0088] FIG. 49 is a schematic, perspective view of a switch and motion sensor insert wall plate assembly.

[0089] FIG. 50 is a schematic, perspective view of an air intake and spud cover assembly with integrated button switch and motion sensor.

[0090] FIG. 51 is a schematic, perspective view of a toilet bowl assembly with a built-in push-to-connect style port.

[0091] FIG. 52 is a schematic, perspective view of a push-to-connect cartridge, toilet tank pipe connection, and cutaway view of an adapter block as an assembly.

[0092] FIG. 53 is a schematic, section view of a toilet with a pipe-tube conduit and push-to-connect cartridge installed in relation to the toilet bowl.

[0093] FIG. 54 is a schematic, perspective view of a push-to-connect cartridge, toilet tank pipe connection, and cutaway view of a miniature spud connection fitting as an assembly.

[0094] FIG. 55 is a schematic, perspective view of a urinal with an integrated push-to-connect style connection.

[0095] FIG. 56 is a schematic, perspective view of a rear of the urinal of FIG. 55, with an integrated push-to-connect style connection.

[0096] FIG. 57 is a schematic, side section view of a urinal with an integrated push-to-connect style connection and its interface with an overflow prevention channel built-in to the urinal.

[0097] FIG. 58 is a schematic, underside perspective view of a tank equipped toilet showing two embodiments of an integrated push-to-connect port. One embodiment is of a push-to-connect cartridge fitting permanently installed on the underside of the tank. The second embodiment is of a removable, bulkhead style passthrough air fitting.

[0098] FIG. 59 is a schematic, partially sectional, perspective view of a toilet tank showing the two embodiments of FIG. 58 as installed inside of the toilet tank.

[0099] FIG. 60 is a schematic, perspective view of a removable, bulkhead style passthrough air fitting.

[0100] FIG. 61 is a schematic, underside perspective view of the removable, bulkhead style passthrough air fitting of FIG. 60.

[0101] FIG. 62 is a schematic, perspective view of a removable, bulkhead style passthrough air and switch cable fitting.

[0102] FIG. 63 is a schematic, perspective view of a commercial, multi-fixture restroom facility depicting several of the embodiments being disclosed, used in combination.

[0103] FIG. 64 is a schematic, perspective of a toilet with an air intake retrofit attachment, urinal with built-in air intake port, two different wall mounted switches and sensors embodiments, and wall mounted cable management tray.

[0104] FIG. 65 is a schematic, perspective of a multi-fixture fluid pumping station with tubing and switch cable, power supply, and sink drain air exhaust connections.DETAILED DESCRIPTION

[0105] The following detailed description and the appended drawings describe and illustrate various example embodiments of toilet ventilation systems for residential and commercial buildings. The description and illustration of these examples are provided to enable one skilled in the art to make and use such according to this invention. They are not intended to limit the scope of the claims in any manner.

[0106] The framework for discussion to be used to organize the embodiments to be disclosed includes: fluid pump assemblies for multi-fixture toilet applications; wall outlet connections; drain water and vent pipe air exhaust connections; retrofit options for existing flushometer valve equipped toilet and urinal fixtures; and new toilet fixtures with integrated air exhaust tubing connections.

[0107] The term “fluid pump” as used herein, including in the claims, refers to a pump that is mainly used to pump air (e.g., malodorous air from a toilet) but can also operate when a liquid (e.g., water from the toilet assembly) is sucked into the fluid pump. A pump is distinguished from a fan in that a pump pulls a smaller volume of air at a higher pressure, as opposed to a fan that pulls a relatively larger volume of air a relatively lower pressure. The terms “fluidic pump” and “fluid pump” are used interchangeably herein and have the same meaning.

[0108] References made to the use of flexible tubing may be, for example, a nominal size of ⅜ inch outside diameter (O.D.)-¼ inch inside diameter (I.D.) flexible PVC tubing or a larger ½ inch O.D.-⅜ inch I.D. flexible PVC tubing. These examples are in keeping with the nominal tubing sizes but it is understood that other sizes may be used and is not meant to be a limiting factor for the scope of this disclosure.

[0109] FIGS. 1-4 are illustrated examples regarding fluid pump assemblies for multi-fixture toilet applications.

[0110] FIGS. 1-2 illustrate an example of a fluid pump case 1 and lid assembly 2 that can be used for a remote pump installation servicing a whole home or multiple toilets from a central location. Individual fluid pump assemblies 20 are contained inside the case 1, which includes a foam separator insert 6 to securely hold each fluid pump 20 and provide a measure of vibration and sound deadening. The case 1 and lid 2 may be made of, for example, plastic and include additional foam or vibration deadening materials to reduce noise and vibration. Connector ports for combined power 3 and remote button switch connectors 4 may be integrated into the lid 2, allowing for connections to be made without the need to open the case 1. A tubing passthrough port 5 built into the lid 2 allows for the separate air intake lines 11 from each toilet being served to connect to the individual fluid pumps 20 contained in the case 2. The air flows from each toilet to the respective fluid pump 20. While three fluid pumps 20 are illustrated in the figures, different size cases 1 that accommodate different numbers of fluid pumps 20 may be employed (e.g., 4, 5 or 6 pumps 20), or multiple cases 1 containing fluid pumps 20 may be employed. A push-to-connect tubing manifold 24 combines air exhaust lines 12 extending from each fluid pump 20 to a single (e.g., larger diameter) air exhaust tubing line 15 that exits through the tubing passthrough port 5. Air flowing out of the fluid pumps 20 is directed through the manifold 24 and into the air exhaust tubing line 15. This configuration allows for the multi-fluid pump equipped case 1 and lid 2 assembly to be delivered to the customer as a complete unit ready for power supply (e.g., electric power), control cables (e.g., for pump on / off control), and push-to-connect tubing connections to be easily connected at the build site where the toilet ventilation system is being installed. The lid 2 can generally remain in place during operation of the toilet venting system, with removal to re-program or replace any of the individual fluid pump assemblies 20 (or other components) making it easy to service.

[0111] FIGS. 3-4 illustrates another example of a remote pump station where individual fluid pump modules 30 are contained in a single enclosure 33 and lid 34 assembly for servicing multiple toilet or urinal fixtures. For illustrative purposes, internal wiring and tubing connections have been omitted from FIGS. 3-4 so that the primary component layout can be more clearly understood. The tubes and wiring may be similar to those illustrated in FIGS. 1-2. The enclosure 33 and lid 34 of this pump station unit is generally not meant to be opened regularly except for repair and maintenance. Power connections 3 and control switch connections 4, as well as individual timer relays 32 (which may, for example, have a digital LED interface), one for each toilet or urinal being served, are integrated into the lid 34. Lid push-to-connection tubing connection ports 27 are provided for individual air intake tubes (e.g., like those illustrated in FIGS. 1-2) and a connection port 28 for a single large air exhaust tube or hose (like that illustrated in FIGS. 1-2) that is the exhaust point for an internal air manifold 26, which combines the separate air exhaust lines 12 from each of the fluid pump modules 30. The exhaust tube or hose is sized so that air flow resistance is minimized and sufficient air flow speed can be maintained to allow for water that is accidentally ingested by the fluid pump modules 30 to be purged. Optionally, multiple ½ inch O.D. tubes 15 and push-to-connect reducer manifolds (like manifold 24 illustrated in FIGS. 1-2) may be employed for air exhaust instead of a single oversized hose (or tube) to allow for push-to-connect style fittings to be used throughout. This option avoids use of push-to-connect fittings in sizes greater than ½ inch, which may not be readily available. A pair 36 of fluid pump modules 30 typically function in tandem to serve a single toilet or urinal fixture, so Y-style push-to-connect connectors 25 may be used to combine the air intake lines 12 of the paired pump modules 36 for a single air intake port 27. A logic controller 31 may be used to control the operation of the individual fluid pump modules 30 in lieu of individual timer relays 32 for each tandem pump pair 36. If the logic controller 31 is employed, a digital human-machine interface (HMI) control screen may be provided as part of the lid 34 for system programming. The remote pump station may be powered by an external AC to DC power supply (converting from standard building AC voltage (e.g., generally 110-240 volts, “high voltage”) to a relatively lower power DC voltage of about 5-10 volts “low voltage”), allowing the remote pump station to operate as a low voltage appliance. Alternately, a waterproof alternating current (AC) to direct current (DC) power supply may be included within the remote pump station enclosure 33 and have an external electric cord and 120 VAC plug for connection to a standard wall outlet. FIGS. 63-65 illustrate an example of a multi-fixture pump station 40 (such as the remote pump station illustrated in FIGS. 3-4) installed in a commercial restroom environment, including an external power supply 41, air intake and exhaust line connections, and a wall mounted cable management tray 42 for retaining the lines and cables.

[0112] FIGS. 5-21 and FIG. 49 are illustrations regarding wall outlet connections. For new building construction projects, rough-in outlet boxes are typically installed by the electrical installers before wall panels are installed over the framing structure. A similar install procedure and workflow may be used to prepare tubing and switch connection points for a multi-fixture toilet ventilation system, which may reduce installation costs and reduce installation time.

[0113] FIG. 5 illustrates an example of a wall outlet cover plate 70 installed on a wall behind a toilet bowl 51 and toilet tank 50 assembly, which cover plate 70 provides a tubing connection for air exhaust and a connection point for a tank mounted switch 60 (e.g., on / off switch).

[0114] FIG. 6-7 are front and rear view illustrations, on an enlarged scale, of the wall outlet cover plate 70 of FIG. 5. If one is employing a standard blank wall outlet box cover 74, it may be modified (for example, using a CNC router) to include a rectangular cutout 76 for mounting a bulkhead mountable socket connector 62 and a circular cutout forming a tubing passthrough 71. A tapping plate 77 includes pre-drilled screw holes, allowing for the socket connector 62 to be mounted using self-tapping screws 66. Switch cable wires (not illustrated in FIGS. 6-7) are connected to the corresponding screw terminal ports 64 of the socket connector 62. The exhaust tubing lead 75, which connects to the remotely located fluid pump (e.g., those illustrated in FIGS. 1-4) is fed through the passthrough 71 and terminated with a push-to-connect straight connector fitting 72. The modified wall outlet cover plate 70 can then be installed to a low voltage outlet bracket 65 that has been previously mounted to the wall framing structure or wall board panel. Low voltage, as used herein means a voltage in the range of about 5-10 volts (V), whereas high voltage refers to a typical building voltage of 110-240 V. Once the toilet (50, 51) is installed, the switch connector plug 61 of the tank mounted switch 60 is connected to the socket connector 62 and the tubing 73 leading to the toilet (e.g., air intake shroud) installed to the open push-to-connect port 72 to complete installation.

[0115] FIGS. 8-13 and FIG. 49 illustrate examples of front and rear views of wall outlet assemblies showing different embodiments of insert brackets 90, which can be install in a conventional manner to a standard wall outlet box and allow for a standard rectangular wall outlet cover plate to be used to complete the installation. Insert brackets can be configured for mounting push-to-connect connectors, switch cable connectors, button switches, infrared sensors, switch relays, etc. in various combinations.

[0116] FIGS. 8-11 illustrate an insert bracket 90 configuration that includes a push-to-connect straight reducer fitting 72 for connecting to air tubing and a bulkhead mount electrical connector 62. The insert bracket 90 may be installed in typical single 83 or dual gang 82 outlet boxes. Standard rectangle style cover plates for dual outlet 80 and single outlet 85 variants can be used for an aesthetically acceptable installation that matches the facility decor.

[0117] FIGS. 12-13 illustrate a modified blank insert 91 that contains a switch (including its cord 63 and connector plug 62) that may be installed to a low voltage outlet bracket 84 as shown or with any standard outlet box. A standard rectangular style cover plate 85 can be used to complete the installation.

[0118] FIGS. 14-17 show front and rear views of a bracket 90 that includes a rectangular cutout 76 for a bulkhead style electrical connector 62, and circular cutout 78 for a push-to-connect straight reducer fitting 72. Adjacent to the rectangular cutout 76 may be holes 68 ready to accept self-tapping mounting screws 66 for the bulkhead style electrical connector 62. The backside of the circular cutout 78 is larger in diameter than the front side in order to form a potting compound cavity 69, which is used to contain a hotmelt (or epoxy) potting compound 79, which is used to secure the push-to-connect fitting 72 to the bracket 90. Outlet box mounting holes 86, which match the screw spacing for a standard wall outlet box in a building, are included in the bracket 90. Inset pockets with through holes 87 that accept threaded inserts 88 (or nuts) are included in the bracket 90 to accept mounting screws for a standard rectangle style wall outlet cover plate (e.g., cover plates 80, 85 shown in FIGS. 8-13) to complete installation.

[0119] FIGS. 18-21 illustrate an embodiment of an insertable bracket design for a switch plate (e.g., switch plate 91 shown in FIGS. 12-13) that uses a standard blank adapter insert 89 that is normally used as a non-functional switch or outlet to decoratively hide an unused outlet box in a wall. FIGS. 18-19 show front and rear views of a conventional blank adapter insert 89 modified by adding a circular cutout 93 added to accept an assembly of a switch (e.g., switch 92 shown in FIGS. 12-13), cord (e.g., cord 63 shown in FIGS. 12-13) and connector plug (e.g., connector plug 61 shown in FIGS. 12-13). The standard blank adapter insert 89 includes mounting holes for standard outlet boxes and wall cover plates used in buildings. FIGS. 20-21 shows front and rear views of the complete button switch insert assembly employing the modified blank adapter insert 89 of FIGS. 18-19. The assembly, including the switch 61 and attached cord 63 is fitted into the circular cutout 93 and fixed in place with a switch locking nut. A rectangular potting sleeve 94 is installed to form a wall surrounding the button switch body and wiring terminals. The resulting cavity is then back filled with a hotmelt (or epoxy) potting compound 95 to fully encapsulate and permanently bond the button switch to the modified adapter insert 89. The switch cord 63 is connected to a switch connector plug 62.

[0120] A similar example of an embodiment that uses a modified blank adapter insert 96 is depicted in FIG. 49, which shows a front view of a modified blank adapter insert assembly containing a switch 92 and an infrared proximity sensor 97 fitted into respective circular cutouts in the modified blank adapter insert 96. The insert assembly is shown with a standard wall outlet cover 85 installed to hide the outlet box opening mounted in a building wall.

[0121] FIGS. 22-27 illustrate examples of drain water and vent pipe air exhaust connections that may be employed to allow air exhaust tubing to be connected through existing building plumbing fittings that may be easily disassembled for maintenance or replacement.

[0122] FIGS. 22-24 illustrate an embodiment using a standard cleanout tee fitting 100 with a threaded clean out port 101, as are employed in many building plumbing systems. The cleanout port 101 accepts a removable cleanout plug 102 that screws into the cleanout port 101. The removable cleanout plug 102 includes a push-to-connect straight connector 103 or, alternatively, a push-to-connect cartridge. The cleanout plug 102 may include a raised square feature with flat facets to allow for engagement with a wrench during installation or removal of the cleanout plug 102 from the cleanout port 101. The back side of the raised feature may be a hollow cavity that may be used as a potting cavity 104 for back fill. A circular cutout 106 extends through the outer face of the cavity 104 and is sized to receive the push-to-connect straight connector 103. The push-to-connect fitting 103 is inserted through the circular cutout 106 and into the potting cavity 104 so that a short length of tubing that is long enough to extend beyond the opening of the cavity extends on the cavity side of the connector 103. A thermoset or epoxy potting compound 105 backfills the potting cavity 104, fully enclosing the push-to-connect fitting 103, with only a stub of the tubing protruding from the compound 105. Because the orientation of a typical cleanout port 101 relative to the cleanout T-fitting 100, as installed in a building plumbing system, is typically oriented perpendicular to an outlet of an inline joint fitting, a 90-degree push-to-connect stem fitting 108 may be used in conjunction with the straight connector fitting 103 to redirect the exhaust tubing 109 as needed for routing the toilet ventilation system. Additionally, the cleanout plug 102 may be modified to have more than one push-to-connect connector fitting 103, such as when one is ventilation more than one toilet or urinal.

[0123] FIGS. 25-27 illustrate an embodiment of a removable plug that can be used with a standard slip joint connection 110. Slip joints are typically used for conventional sink drainage pipe connections and typically use a compression nut 110, corresponding reducing washer 116, and threaded pipe end to secure and seal a smaller diameter section of pipe that has been “slipped” into the end of the threaded pipe. The open end of the sink drain trap 111 is inserted into the inline slip joint connection 110 of the slip joint tee pipe 112 for the primary drain connection. An exhaust plug fitting 113 is sized for a corresponding slip joint connection 110 and reducing washer 116 is installed in a tee-port of the slip joint tee pipe 112. The exhaust plug fitting 113 includes an outward facing cavity 117 on its top face that accepts a press fit push-to-connect cartridge fitting 114, and a through hole 118 to insert a portion of the plug 113 body. To install, the exhaust plug fitting assembly 113 is fitted with a reducing washer 116 and inserted into the larger threaded pipe end. The slip joint compression nut 110 is placed over the exhaust plug fitting 113 and reducing washer 116 and threaded onto the threaded pipe end. The exhaust tubing 115 is inserted into the push-to-connect cartridge 114 port to complete the installation. The slip joint tee 112 should be oriented so that the exhaust plug fitting 113 is oriented in a vertical position (as shown in FIG. 25) or angled no more than about 60-degrees from vertical so that water flowing through the drain does not have the opportunity to reach an opening in the through hole 118 under normal water drainage circumstances. The exhaust plug fitting 113 may also be configured with more than one push-to-connect cartridge fitting 114 to support multiple exhaust air tubing 115 connections, for example when connected to multiple toilets or urinals. FIGS. 63-65 illustrate a slip joint plug fitting 113 accepting the air exhaust tubing 115 connection from a multi-fixture pump station 40 in a commercial restroom environment.

[0124] FIGS. 28-50 illustrate examples of toilet ventilation systems applicable for retrofitting existing flushometer valve equipped toilets and urinals.

[0125] FIG. 28 depicts a typical prior art commercial toilet having a tankless toilet bowl fixture 140, commercial style toilet seat 141, spud cover and connecter 152, manually actuated flushometer valve 150, and vacuum breaker pipe assembly 151. The flushometer valve 150 is connected to the main water supply through a side exiting elbow pipe assembly 142 that extends into the wall directly behind the toilet (or urinal). FIG. 29 is an exploded view of a prior art vacuum breaker pipe assembly 151 and has a tailpiece nut 155, vacuum breaker connecting pipe 156, vacuum breaker bladder 157, vacuum breaker baffle 158, and vacuum breaker gasket 159. Battery powered and electrically actuated flushometer valves with built in occupancy sensors are also in widespread use with these commercial types of toilets and urinals.

[0126] FIGS. 30-43 illustrate an embodiment of an air intake system that can be retrofitted (e.g., through the use of a retrofit kit to add a toilet ventilation system) to a conventional flushometer equipped toilet assembly 143 (see also FIGS. 28-29 for a conventional toilet that can be retrofitted) and fitted with various intake nozzle designs to accommodate different toilet seat configurations.

[0127] FIG. 30 shows the air intake system including a 90-degree low profile intake nozzle 171, tubing adapter 172, and clamp on spud cover assembly 173 installed as an assembly on the top surface of a toilet bowl fixture 140. The intake nozzle 171 is directed toward the toilet bowl rim and extends beneath the closed toilet seat 141, between the toilet seat hinges 144.

[0128] FIGS. 31-32 shows front and rear perspective views of the air intake system installed on a toilet. The spud cover assembly 173 includes a front spud cover 174 and rear cover panel 175 that are clamped around the vacuum breaker connecting pipe 156. The front spud cover 174 includes a low profile tunnel section extending towards the toilet bowl rim that covers a tubing connection port of the tubing adapter 172, which functions as a transitional air manifold between the circular profile of the tubing connection to the low-profile, relatively flat rectangular form of the 90-degree low profile intake nozzle 171. The intake nozzle 171 and tubing adapter 172 may be affixed to the flat, top surface of the toilet bowl using silicone or similar waterproof adhesive. Air intake tubing 177 is routed from behind the toilet bowl fixture to the connection socket 182 (see also FIGS. 33-34) of the tubing adapter 172 where it is inserted and secured with a cyanoacrylate (or similar) adhesive.

[0129] FIGS. 33-35 further illustrate the configuration of FIGS. 30-32 of the intake system assembly of the toilet ventilation system. The intake nozzle 171 and tubing adapter 172 is shown as a slip fit connection with the nozzle being inserted into the tubing adapter opening, but other joining methods may be used depending on which suits the nozzle design being employed. The spud cover panels 174, 175 may be constructed, for example, of a durable plastic material or chrome plated brass or steel for improved aesthetic appearance. The tubing adapter 172 and intake nozzle 171 may, for example, be 3D printed plastic due to the enclosed chamber structure that may be easier to form than employing a process such as a single piece injection molding. Another alternative for fabrication of the intake nozzle 171 employs microchannel aluminum extrusions (such as those typically used for heat exchangers or liquid cooling applications), which effective use of such extrusions in the present application is possible due to the low air flow employed in the use of the toilet ventilation system. The front spud cover 173 includes a clamping collar feature 183 shaped to grip a standard vacuum breaker connection pipe 156 of a conventional toilet and clearance holes 181 for clamping screws 178. The back spud cover panel 174 includes a similar clamping collar feature 183 with inset nut pockets 180 that act as a rotation stop for clamping nuts 179 during installation. A tubing access opening 184 at the back of the spud cover assembly allows the air intake tubing 177 entering from behind the toilet fixture 140 and routed in a protected manner around the toilet spud fitting 153 (and cover 154, if present) and to the tubing socket 182 of the tubing adapter 172.

[0130] FIGS. 36-43 illustrate examples of alternative toilet intake nozzle embodiments that may be used with the spud cover assembly 170 and intake system discussed relative to FIGS. 30-35. FIGS. 36-37 show as installed and underside views, respectively, of a flat low-profile intake nozzle 190 configuration that is similar to the previously disclosed 90-degree intake nozzle 171 (of FIGS. 30-35) but without the downward oriented bend over the toilet bowl rim. This configuration better allows for the previously separate tubing adapter 172 to be incorporated with the nozzle 190 as a single piece construction while possibly incurring only a minor performance reduction due to the nozzle not being extended further downward into the toilet bowl. FIGS. 38-39 show as installed and underside views, respectively, of a rectangular profile intake nozzle 191 design that does not employ a low-profile form, which allows the nozzle 191 to be narrower and formed as a single piece construction while allowing for effective airflow. This configuration applies to toilets where the toilet seats have greater underside clearance so that a low-profile for the nozzle is not needed. FIGS. 40-43 show another embodiment of a toilet seat 141 mounted intake nozzle 192. The intake nozzle 192 is secured to the underside of the toilet seat 141 in proximity to rotational axis of the hinge of the toilet seat 141 using silicone or similar waterproof adhesive. The intake nozzle 192 includes a tubing socket 182 that accepts a short length of flexible (e.g., silicone rubber) tubing 193, which is inserted and secured with a cyanoacrylate (or similar) adhesive. The other end of the tubing 193 is similarly installed into a tubing socket 182 of a tubing adapter 194, thereby allowing the intake nozzle 192 to move with the seat as it is pivoted between raised or lowered positions. The fittings may also be configured to connect with oval or rectangular shaped tubing, which may improve bending and stretch characteristics of the tubing.

[0131] FIGS. 44-47 illustrate an example of a urinal intake nozzle 194, which can be installed on a conventional urinal 145 with a reasonably flat rim surface 146 surrounding the main bowl. The urinal intake nozzle 194 includes a flat underside surface that secures a body of the nozzle 194 to a location on the urinal rim surface using silicone or similar waterproof adhesive. The urinal intake nozzle 194 may have a downward oriented tubing socket 182 incorporated into a single piece design that accepts an air intake tube 177, which is inserted into the socket 182 and secured with a cyanoacrylate (or similar) adhesive. The air intake tube 177 is routed down an underside surface of the urinal 145 using, for example, adhesive or adhesive backed tubing guides.

[0132] FIGS. 48-50 illustrate examples of different embodiments for switch and occupancy sensors that can be used to trigger a fluid pump cycle of the toilet ventilation system. FIG. 48 shows a switch 92, which may be an illuminate button switch, and an infrared proximity sensor 97 in a shared enclosure 98 and sharing a common switch cord 63 and connector, which transmit electric power and control signals. Wire interconnections are contained within the enclosure cavity 98 that may be backfilled with a thermoset or epoxy potting compound during assembly. The assembled enclosure 98 may be wall mounted at the toilet or urinal with, for example, silicone or similar waterproof adhesive. FIG. 49 shows a blank adapter insert 96, which was discussed above. FIG. 50 shows a spud cover assembly 170 with an integrated illuminated button switch 92, which may be an illuminated button switch, and infrared proximity sensor 97. This may be employed with the assemblies discussed relative to FIGS. 30-43. The front spud cover panel 174 includes a flat surface region 185 with circular cutouts for the switch 92 and sensor 97. Wire interconnections are contained within the spud cover panel 174 and may be framed, for example, with a potting sleeve and backfilled with thermoset or epoxy potting compound in a similar manner as previously disclosed for modified blank adapter inserts for use with wall outlet boxes.

[0133] FIGS. 63-64 illustrate examples of air intake spud cover assemblies 170 (such as those shown in FIGS. 30-43 and 50) fitted to flushometer equipped toilets 143, outlet box mounted switch and sensor adapter inserts 96 (such as those shown in FIGS. 8-21 and 48-49), and wall mounted button switch and sensor assemblies 99 (such as those shown in FIGS. 8-21 and 48-49), installed in a multi-fixture (e.g., multiple toilets, multiple urinals or a combination of toilets and urinals) commercial restroom environment. Alternatively, the intake spud cover assemblies 170 and switch and sensor assemblies 99 may be those shown in FIG. 50.

[0134] FIGS. 51-62 are examples illustrating embodiments of a flushometer valve equipped toilets and urinals having air exhaust tubing connections integrated into the toilets and urinals. The terms “integrated” and “integral” as used herein, including the claims, means that the particular element or feature is formed as part of a whole single monolithic piece, rather than formed separately and then joined together.

[0135] FIGS. 51-53 show an embodiment of a toilet 200 with an integrated push-to-connect air intake tubing port 210 and with a direct air connection to the interior of the toilet bowl 201. The air connection is achieved using a length of pipe 212 (or tubing or a molded-in channel) with a 90-degree bend and one end within the toilet bowl 201. The molded porcelain body of the toilet 200 includes an access opening 214 at the rear of the toilet 200 and an access port 215 on the underside of the toilet bowl rim. An adapter block 213 is fitted into an access opening 214 to provide a cavity for a push-to-connect cartridge 211, which may be installed using, for example, a press fit, and provides a socket for a straight end of a pipe 212 to be inserted, with the joint sealed with, for example, cyanoacrylate (or similar) adhesive. The completed assembly is installed through a rear access opening 214 so that the 90-degree bend is oriented downwards through the access port 215 to provide an air connection to the interior of the toilet bowl 201. The adapter block 213 is secured in place with, for example, an adhesive sealant or epoxy to ensure a waterproof seal is achieved. An air intake tube 220 that extends from the toilet 200 to a fluidic pump is connected to the push-to-connect port 210 once the toilet fixture is installed. While push-to-connect fittings are discussed throughout this patent application, other types of connections (for example, threaded or interference fit) may be employed instead.

[0136] FIG. 54 illustrates another embodiment, similar to that employed in FIGS. 51-53, that uses the same conduit pipe 212, push-to-connect cartridge 211, and access port 215 as previously described but uses a miniature toilet spud fitting 216 as the basis for the access opening closeout. The spud fitting 216 is sized to match the diameter of the cartridge 211, which allows for a press-fit joint. The circular access opening 214 at the rear of the toilet bowl fixture 200 is sized to accept the inserted portion of the miniature spud fitting 216 and provides for an effective seal. The conduit pipe 212 is butted up (or inserted) to the inner opening of the push-to-connect cartridge 211 and secured in place with, for example, a thermoset or epoxy potting compound 217 backfill that also seals and waterproofs the assembly.

[0137] FIGS. 55-57 illustrate an embodiment of a urinal 202 with an integrated push-to-connect tubing connection. The urinal 202 may include a water overflow channel 238, similar in design to a standard bathroom sink, that includes an overflow inlet 237 positioned high up on the front wall surface of the urinal bowl 231. The overflow channel 238 connects the overflow inlet 237 to an overflow outlet 241 that is included in a urinal drain 232 and located below the drain cover 233 but before the drain trap 234. A tubing access port 238 sized to fit, for example, ⅜ inch O.D. tubing is formed through the wall of the overflow channel 238 in proximity to the opening in the overflow inlet 237. A tubing lead 239 is inserted into an access port 238 and secured using, for example, an adhesive. Plastic pipe (PE or PEX) may be employed instead of flexible tubing to improve overall strength and to allow for the inserted end to be flared before gluing, allowing for a more durable joint. This embodiment allows for malodorous air to be extracted from the urinal bowl 231 through the overflow inlet 237 opening and from the urinal drain 232 through the overflow outlet 241 opening. The tubing lead 239 may be routed in proximity to the sanitary drain connection outlet 235 and terminated with a push-to-connect straight connector 240, which allows it to be ready to accept an air intake tubing connection to the fluidic pump (such as those illustrated in FIGS. 1-4, 63 and 65). FIGS. 63-64 illustrates the urinal fixture 202 installed in a multi-fixture commercial restroom environment and controlled by switches and sensor assemblies 99.

[0138] The method being prescribed where air is drawn directly from the toilet or urinal bowl by an air moving device with sufficient vacuum pressure to suction water into the air conduit should be used in conjunction with a toilet ventilation system with the following characteristics: the type of air mover may be of a diaphragm pump design that is also capable of pumping water (i.e., a fluidic pump); the tubing connections, pump design, and system architecture are leak free and resistant to water damage; and the air exhaust may be expelled into a sanitary drain water and vent system. The fluidic pump and accompanying components of the toilet ventilation system, whether pre-assembled or in a kit form, as described herein, or as described in U.S. patent application Ser. No. 17 / 882,676, filed Aug. 8, 2022, to Hung, which is incorporated herein in its entirety by reference, meets these characteristics.

[0139] FIGS. 58-62 illustrate examples of embodiments of toilet ventilation systems that provide a built-in tubing connection port for tank equipped toilets 202 that use an air intake shroud 203 of the type disclosed in U.S. patent application Ser. No. 17 / 882,676, filed Aug. 8, 2022, to Hung, which is incorporated herein in its entirety by reference. This toilet ventilation system has the air intake shroud 203 installed over a toilet tank overflow pipe 204 for malodorous air extraction from the toilet bowl. FIGS. 58-59 illustrate two different embodiments of a toilet ventilation system installed to the same toilet tank 202. The first embodiment uses a circular cutout 251 located at an accessible position on a bottom wall of the toilet tank 202, which allows for installing a bulkhead style push-to-connect straight connector 250, which may have a threaded body that is fixed in place by installing a nut and a sealing gasket on each side of bulkhead. A tubing lead 252 that is long enough to reach a connection port of the air intake shroud 203 is installed to the push-to-connect port 250 on the inside of the toilet tank 202, allowing for the toilet tank 202 to be delivered to a customer prepared for final fluid pump connection after the toilet is installed.

[0140] Another embodiment depicted in FIGS. 58-61 uses a fill valve bulkhead fitting 255 that may be essentially identical to a conventional fill valve 254 passthrough fitting, sharing the same dimensions, design features, and components, except limited to a short stub section containing a cartridge fitting 257, tubing lead 253, and potting compound backfill 258. An additional circular passthrough hole 251 may be provided in the bottom of the toilet tank 202 that could be a mirrored layout of the fill valve passthrough hole, allowing for the two items to be relocated from side to side if needed for a particular bathroom and toilet installation. The bulkhead fitting includes a hollow threaded body 261 with an attached end flange 259, a sealing gasket 260, and finger tight flange nut 262. The sealing gasket 260 is installed onto the threaded body before being inserted into the circular passthrough hole 251 from the tank side. The flange nut 262 is installed from the underside of the tank 202 and causes the gasket 260 to form a watertight seal between the end flange 259 and bottom of the toilet tank 202 once tightened. A tubing lead 253 that is long enough to reach the connection port of the air intake shroud 203 is inserted into the open port side of, for example, a push-to-connect cartridge 257 and secured with, for example, cyanoacrylate (or similar) adhesive. The tubing assembly is then inserted into a hollow center passthrough of the bulkhead fitting 250 with just the push-to-connect cartridge 257 connection port protruding from the stick-out end of the bulkhead fitting 250. The hollow cavity may be backfilled, for example, with potting compound 258 to secure the assembly in position and provide a watertight seal.

[0141] FIG. 62 illustrates another embodiment of a fill valve style bulkhead fitting 265 that provides for passthrough tubing and switch cable connections. The fitting may be the same as the previously disclosed bulkhead fitting 255 (as shown in FIGS. 58-61) except for an additional notch cutout 261 that allows for a switch cable lead 267 to enter the body of bulkhead fitting 265 without interfering with the functionality of the push-to-connect cartridge 257. The switch cable lead 267 is of sufficient length to reach a tank mounted activation switch 60 for the toilet ventilation system and be secured above water under normal operation. The cable may be secured with, for example, potting compound 258 along with the tubing 253 and cartridge 267. A switch cable socket connector 268 is used to terminate the switch cable lead 267 on the inside of the toilet tank while a plug connector 269 is used to terminate the switch cable lead 267 on the exterior side of the toilet tank. A blanking plug can be installed by the manufacturer for toilet tanks that do not employ a toilet ventilation system.

[0142] Those with ordinary skill in the art will appreciate that various modifications and alternatives for the described and illustrated embodiments can be developed in light of the overall teachings of the disclosure, and that the various elements and features of one example described and illustrated herein can be combined with various elements and features of another example without departing from the scope of the invention. Accordingly, the particular examples disclosed herein have been selected by the inventor(s) simply to describe and illustrate examples of the invention and are not intended to limit the scope of the invention or its protection, which is to be given the full breadth of the appended claims and any and all equivalents thereof.

Examples

Embodiment Construction

[0105]The following detailed description and the appended drawings describe and illustrate various example embodiments of toilet ventilation systems for residential and commercial buildings. The description and illustration of these examples are provided to enable one skilled in the art to make and use such according to this invention. They are not intended to limit the scope of the claims in any manner.

[0106]The framework for discussion to be used to organize the embodiments to be disclosed includes: fluid pump assemblies for multi-fixture toilet applications; wall outlet connections; drain water and vent pipe air exhaust connections; retrofit options for existing flushometer valve equipped toilet and urinal fixtures; and new toilet fixtures with integrated air exhaust tubing connections.

[0107]The term “fluid pump” as used herein, including in the claims, refers to a pump that is mainly used to pump air (e.g., malodorous air from a toilet) but can also operate when a liquid (e.g., ...

Claims

1. A toilet ventilation system for operatively engaging multiple toilets, multiple urinals, or both the toilets and the urinals, the toilet ventilation system comprising:a pump case having a housing and a lid removably mounted on the housing, the pump case including inlet pass-throughs for air lines configured to direct air from the toilets or urinals into the pump case, cable connector ports configured to operatively engage cables connecting toilet ventilation activation switches to the pump case, a pass-through for an exhaust air line configured to direct air out of the pump case; anda plurality of fluid pumps mounted in the pump case and configured to connect to the air lines, cables and exhaust air line.

2. The toilet ventilation system of claim 1 further including an internal foam separator configured to maintain a position of each of the fluid pumps in the pump case.

3. The toilet ventilation system of claim 1 further including an air manifold configured to connect to air outputs of each of the fluid pumps and direct the airflow into the exhaust air line.

4. The toilet ventilation system of claim 1 further including a plurality of air tubes extending from the inlet pass-throughs to respective ones of the toilets, urinals or both.

5. The toilet ventilation system of claim 1 further including a plurality of switches configured to activate respective ones of the fluid pumps, and a plurality of cables extending from the cable connector ports to respective ones of the switches.

6. The toilet ventilation system of claim 5 wherein the switches are proximity sensors, each mounted adjacent to a respective one of the toilets, urinals or both.

7. The toilet ventilation system of claim 1 wherein the fluid pumps are air pump modules.

8. The toilet ventilation system of claim 1 further including timer controllers mounted to the pump case and configured to allow for selectively activating and deactivating the fluid pumps.

9. The toilet ventilation system of claim 1 further including controller interfaces mounted on the pump case, and programmable logic controllers mounted in the pump housing and operatively engaging the controller interfaces.

10. The toilet ventilation system of claim 1 further including a single electric power supply opening configured to receive a cable from an electric power supply to power the fluid pumps.

11. The toilet ventilation system of claim 10, further including a wall outlet cover plate configured to mount to a wall electrical outlet box, the wall outlet cover plate including a fitting for connecting to an air line.

12. The toilet ventilation system of claim 11, wherein the wall outlet cover plate includes a low voltage cable connection configured to connect a switch adjacent to the toilet or urinal to the pump case.

13. The toilet ventilation system of claim 1 further including a threaded plug configured to sealingly secure to a water drain pipe, the threaded plug including an air exhaust port configured to connect to the air exhaust line extending from the pump case and direct airflow into the water drain pipe.

14. The toilet ventilation system of claim 13 wherein the drain pipe is a vertical drain pipe and the threaded plug is configured to sealingly secure to a cleanout opening in the water drain pipe.

15. The toilet ventilation system of claim 13 wherein the drain pipe is a sink drain pipe and the threaded plug is configured to sealingly secure to a horizontal portion of the sink drain pipe.

16. The toilet ventilation system of claim 1 wherein the toilets are flushometer toilets and the toilet ventilation system further includes:a respective air intake nozzle on each toilet with an opening adjacent to a toilet bowl, and a respective air flow tube connecting from each of the air intake nozzles to the pump case.

17. The toilet ventilation system of claim 16 further including spud cover assemblies, each mounted on a respective one of the toilets around a corresponding vacuum breaker connecting pipe, with the air flow tubes extending through respective ones of the spud cover assemblies.

18. A toilet ventilation system for operatively engaging a flushometer toilet, the toilet ventilation system comprising:an air intake nozzle extending from a toilet bowl of the flushometer toilet toward a spud cover;air intake tubing operatively engaging the air intake nozzle and extending past the spud cover; anda spud cover assembly mounted around the spud cover and a vacuum breaker connecting pipe of the flushometer toilet, and configured to allow the air intake line to pass through the spud cover assembly to a back side of the flushometer toilet.

19. The toilet ventilation system of claim 18 wherein a toilet ventilation switch is mounted on the spud cover assembly.

20. The toilet ventilation system of claim 18 wherein a motion sensor is mounted on the spud cover assembly.

21. The toilet ventilation system of claim 18 wherein the spud cover assembly includes a front spud cover operatively engaging the air intake nozzle and a rear cover panel configured to be secure to the front spud cover to secure the spud cover assembly to the vacuum breaker connecting pipe.

22. The toilet ventilation system of claim 18 wherein the air intake nozzle is configured to extend under a toilet seat between a pair of toilet seat hinges.

23. The toilet ventilation system of claim 22 wherein the air intake nozzle includes an end portion angled downward into the toilet bowl.

24. The toilet ventilation system of claim 22 wherein the air intake nozzle extends to an edge of the toilet bowl but not down into the toilet bowl.

25. The toilet ventilation system of claim 18 wherein the air intake nozzle includes microchannels.

26. The toilet ventilation system of claim 18 wherein the air intake nozzle includes a single channel.

27. The toilet ventilation system of claim 18 wherein the air intake nozzle is secured to an underside of a toilet seat and configured to pivot up and down with the toilet seat, and the air intake tubing is elastically flexible to bend as the toilet seat is pivoted up and down.

28. A toilet ventilation system for operatively engaging a urinal, the toilet ventilation system comprising:a tubing adapter mounted on a front, generally horizontal surface of a bowl of the urinal, and including an air intake nozzle open to the bowl of the urinal and a tube connection outlet on an underside of the tubing adapter outside of the bowl; andair intake tubing operatively engaging the tube connecting outlet and extending down along a surface of the urinal towards a bottom of the urinal.

29. A toilet ventilation system integrated into a urinal, the toilet ventilation system comprising:a bowl;a water overflow channel extending within the urinal having an overflow inlet open to the bowl on an upper portion of a front wall of the bowl, an overflow outlet to a drain of the bowl, and a tubing access port within the urinal; andair intake tubing operatively engaging the tubing access port and extending to a back of the urinal.

30. The toilet ventilation system of claim 29 wherein the air intake port extends adjacent to a sanitary drain connector of the urinal.

31. A toilet ventilation system integrated into a flushometer toilet, the toilet ventilation system comprising:a bowl having a channel molded therein, with the channel having a first end open to an underside of a toilet bowl rim and a second end open to a back side of the flushometer toilet; andan adapter block configured to operatively engage the second open end and connect to an air intake tube that is configured to direct air toward a fluid pump.

32. The toilet ventilation system of claim 31 further including an air flow pipe extending through the channel and operatively engaging the adapter block.

33. The toilet ventilation system of claim 31 wherein the adapter block includes a push-to-connect cartridge that is configured to secure to the air intake tube through a push-to-connect fitting.

34. The toilet ventilation system of claim 31 wherein the adapter block is configured to connect as a toilet spud fitting.

35. A toilet ventilation system integrated into a toilet, the toilet ventilation system comprising:a bowl;a tank operatively engaging the bowl, including a cutout in a bottom or side wall of the tank;a toilet tank overflow pipe mounted within the tank;an air intake shroud mounted over a top of the toilet tank overflow pipe;a fitting sealingly secured in the cutout, and having a hollow center configured to allow for airflow therethrough; andan air tubing lead operatively engaging the hollow center at a first end and operatively engaging the air intake shroud at a second end.

36. The toilet ventilation system of claim 35 wherein the cutout is in the bottom of the tank and a same size as a fill valve cutout that receives a fill valve.

37. The toilet ventilation system of claim 35 wherein the fitting includes a hollow threaded body and a flange that secure the fitting in the cutout.

38. The toilet ventilation system of claim 37 wherein the fitting includes a push-to-connect cartridge mounted in an opening outside of the toilet tank, with the push-to-connect cartridge connected to an exhaust air tubing.

39. The toilet ventilation system of claim 37 wherein the hollow threaded body includes a passthrough for receiving a cable therethrough while sealing the fitting to prevent water from leaking out of the tank through the cutout.

40. A kit for a toilet ventilation system for operatively engaging multiple toilets, multiple urinals, or both toilets and urinals, the kit comprising:a pump case having a housing and a lid removably mounted on the housing, the pump case including inlet pass-throughs for air lines configured to direct air from the toilets or urinals into the pump case, cable connector ports configured to operatively engage cables connecting toilet ventilation activation switches to the pump case, a pass-through for an exhaust air line configured to direct air out of the pump case; anda plurality of fluid pumps configured to mount together in the pump case and configured to connect to the air lines, the cables and the exhaust air line.

41. A kit for a toilet ventilation system for operatively engaging a flushometer toilet, the kit comprising:an air intake nozzle configured to extend from a toilet bowl of the flushometer toilet toward a spud cover;air intake tubing configured to operatively engage the air intake nozzle and extend past the spud cover; anda spud cover assembly configured to be mounted around the spud cover and a vacuum breaker connecting pipe of the flushometer toilet, and the spud cover assembly configured to allow the air intake line to pass through the spud cover assembly to a back side of the flushometer toilet.

42. A kit for a toilet ventilation system for operatively engaging a urinal, the kit comprising:a tubing adapter configured to mount on a front, generally horizontal surface of a bowl of the urinal, the tubing adapter including an air intake nozzle configured to be open to the bowl of the urinal and a tube connection outlet configured to be on an underside of the tubing adapter outside of the bowl; andair intake tubing configured to operatively engage the tube connecting outlet and extend down along a surface of the urinal towards a bottom of the urinal.

43. A kit for a toilet ventilation system integrated into a toilet, the kit comprising:a bowl;a tank configured to operatively engage the bowl, including a cutout in a bottom or side wall of the tank;a toilet tank overflow pipe configured to be mounted within the tank;an air intake shroud configured to be mounted over a top of the toilet tank overflow pipe;a fitting configured to be sealingly secured in the cutout, and having a hollow center configured to allow for airflow therethrough; andan air tubing lead configured to operatively engage the hollow center at a first end and operatively engage the air intake shroud at a second end.

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