TECHNICAL FIELD
This application relates to a system for venting odors from a toilet bowl, more particularly a system having a plurality of micro-vacuum pumps in fluid communication with the toilet bowl that pump odors to a vent stack. The system can include a saddle seated on the vent stack with an exhaust tap per micro-vacuum pump inserted into the vent stack.
BACKGROUND
Numerous devices have been proposed for the removal or neutralization of odors generated in the normal use of a toilet. Many current art toilets depend on a ceiling ventilation exhaust fan to remove odors which originate in the toilet. This process is inefficient and ineffective as the gases enter the room before being exhausted. Others have tried various combinations of motors and fans to remove odors from the toilet bowl, through the toilet seat, or through the room, but improvements thereover are still needed. Fans for bathrooms are designed to move a large volume of air and are traditionally configured to remove moisture from bathrooms to aid in the prevention of mold growth.
A vent stack, also called a plumbing vent, is typically present in the construction of a building to filter gasses away from a home or business and is a crucial component in regulating air pressure in indoor plumbing. The vent stack typically runs inside of the walls of a structure and exits out through the roof. Most notably, vent stacks are used to vent sewer gas and odors as well as to create an air supply to allow the drains and toilets to operate smoothly. The vent stack is typically a vertical or nearly vertical pipe that is connected to the trap(s) of plumbing fixtures in such a manner as to ventilate them and prevent the water seal from being siphoned out of the trap(s).
There is a need to remove the odors from a toilet efficiently without the use of the traditional exhaust fan, thereby providing a system having compact components and utilizing the existing vent stack.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a cross-section through a standard toilet showing its connection to the sewer, including a vent stack having a saddle seated thereon that provides fluid communication between the toilet bowl and the vent stack via a plurality of micro-vacuum pumps.
FIG. 2 is a transverse cross-section along line 2-2 in FIG. 1 through one embodiment of a conduit between the micro-vacuum pumps and the saddle.
FIG. 3 is a transverse cross-section along line 3-3 in FIG. 1 through the vent stack and saddle.
FIG. 4 is a left-side view of one embodiment of the saddle.
FIG. 5 is a top view of an embodiment of the saddle that has six exhaust taps and annular clamps for connecting the saddle to a vent stack.
FIG. 6 is a photograph of four micro-vacuum pumps and their respective flexible tubing for one embodiment of the mechanism inside a pump housing.
FIG. 7 is a photograph of an embodiment having six micro-vacuum pumps seated in an operative arrangement inside a housing.
FIG. 8 is a bottom perspective view of a toilet seat showing connectors for a plurality of flexible tubing segments.
FIG. 9 is an enlarged perspective view of one of the spacers on the toilet seat.
FIG. 10 is an enlarged perspective view of another of the spacers on the toilet seat.
FIG. 11 is an enlarged perspective view of a third of the spacers on the toilet seat.
FIG. 12 is a first embodiment of a clip for holding the flexible tubing between spacers on the toilet seat.
FIG. 13 is a second embodiment of a clip for holding the flexible tubing between spacers on the toilet seat.
FIG. 14 is an alternate embodiment in which tubing or conduits are within the toilet and terminate facing the bowl rather than being in the seat.
FIG. 15 is an example of a SHARKBITE™ brand clamp ring.
FIG. 16 is an example of a HERBIE CLIP® doubled bonded plastic hose clamp
DETAILED DESCRIPTION
The following detailed description will illustrate the general principles of the invention, examples of which are additionally illustrated in the accompanying drawings. In the drawings, like reference numbers indicate identical or functionally similar elements.
Referring to FIG. 1, a system 100 for venting odors from a toilet bowl 104 of a toilet 102 is shown. The toilet 102 has a tank 106 housing a flushing mechanism 108 in fluid communication with the bowl 104 and a trap 108 connected to a water-tight seal 110, such as a wax ring, adjoining the toilet 102 to the floor 111 and to the toilet plumbing conduit 112 that is in fluid communication with the sewer and a vent stack 114. The toilet bowl 104 defines a headspace 105 above the water 107 therein and includes a plurality of flush passages 116. The toilet 102 has a toilet seat 118 that has a lid 120 hingedly connected to the toilet seat. The system 100 has a plurality of micro-vacuum pumps 200 (see FIGS. 6 and 7) enclosed in housing 202 that are in fluid communication with the headspace 105 of the toilet bowl 104 via first tubing 120 and are in fluid communication with the vent stack 114 via second tubing 122. The second tubing 122 can house a plurality of smaller diameter tubes 126, which are each individually in fluid communication with the vent stack 114. In one embodiment, each smaller diameter tube 122 is attached to a tap that is transecting a wall of the vent stack 114, thereby providing fluid communication with the interior of the vent stack. In another embodiment, a saddle 130 is present that is configured to be seated on the vent stack and to provide the means for fluid communication with the vent stack 114.
Referring to FIG. 2, at least the second tubing 122, but also optionally the first tubing 120, has a primary tube 124 having an internal diameter Di sufficient to have a plurality of smaller diameter tubing 126 running the length inside the primary tube. The plurality of smaller diameter tubing 126 are at least equivalent in number to the number of the plurality of micro-vacuum pumps 200.
Referring now to FIGS. 1 and 3-5, the saddle 130 has an elongate seat 132 having a plurality of tubular taps 134 passing through the elongate seat 132 at an orientation configured to tap into the vent stack 114 and has a means for attaching the elongate seat 136 to the vent stack. When the saddle 130 is mounted to the vent stack 114, the plurality of tubular taps 134 create fluid communication between an interior 115 of the vent stack and one each of the plurality of micro-vacuum pumps 200. In one embodiment, the plurality of tubular taps 134 are equivalent in number to the number of the plurality of micro-vacuum pumps 200. In another embodiment, the plurality of tubular taps 134 is fewer in number than the number of the plurality of micro-vacuum pumps 200. The elongate seat 132 can have a concave underside 141 as best seen in FIG. 3. The concave underside 141 can have a contour that mates to the exterior of the vent stack 114. In one embodiment, the concave underside 141 extends at least ten degrees along the circumference of the vent stack 114. In one embodiment, the concave underside extends between 10 degrees to 180 degrees along the circumference of the vent stack 114, more preferably between 10 degrees to 90 degrees.
Still referring to FIGS. 3-5, in one embodiment, the saddle 130 includes a plurality of loops 138 protruding out from a top surface 139 of the elongate seat 132 through which the means for attaching the elongate seat 136 to the vent stack is fed. As seen in FIG. 4, when the number of the plurality of taps 134 is four or less, the plurality of loops 138 can be present as two sets, one each proximate the first and second ends 144, 146 of the elongate seat 132. In an embodiment, such as FIG. 5, with more than four taps 134, the plurality of loops can be present as three or more sets, one set at each end 144, 146 of the elongate seat 132 and the remainder spaced therebetween in even or uneven increments. In all embodiments, as best seen in FIGS. 3 and 4, the saddle can have a sealing member 148 seated about each of the plurality of exhaust taps 134. The sealing member can be a single integral body having a plurality of bores therethrough seated against the underside 141 of the elongate seat 132, where one each of the plurality of bores corresponds to one each of the plurality of exhaust taps 134. In another embodiment, the sealing member 148 is an O-ring seal, V-ring seal, X-ring seal, or any other suitable annular sealing ring, arranged as one each per tap 148. The sealing member 148 can be a rubber washer or a silicone seal.
Referring to FIG. 3, each of the plurality of exhaust taps 134 can have a quick connect fitting 150 for connection to one each, respectively, of the plurality of smaller diameter tubing 126. The quick connect fitting may be a slide lock fitting, a compression fitting, a barbed nipple, or other commercially available quick connector.
Still referring to FIG. 3, the means for attaching the elongate seat 136 to the vent stack 114 can be an annular adjustable clamp, which has an end 152 fed through a tightening fitting 154 operable by a screw 156 (known commercially as a worm gear clamp). In one embodiment, the annular adjustable clamp is a SharkBite™ clamp ring (FIG. 15), a t-bolt hose clamp, or a Herbie Clip® double bonded plastic hose clamp (FIG. 16). In other embodiments, the means for attaching the elongate seat to the vent stack can be a zip tie, an adhesive, a pipe clamp, banded strapping, ratchet straps, wire, straps having hook-and-loop fasteners.
Turning now to FIGS. 1, 6, and 7, the plurality of micro-vacuum pumps 200 which are each in fluid communication with the headspace 105 of the toilet bowl 104 each have two electrical connection terminals 208, 210 and a first pump port 204 and a second pump port 206. Each of the ports 204, 206 are connectable to a segment of tubing 126. The port to tubing connection can be a male-to-female connection or vice versa. The plurality of micro-vacuum pumps 200 can be seated in a housing 202 with the terminals 208, 210 of each electrically wired to a panel (a power panel 211 and a ground panel 212) such that a power positive 214 and a single ground wire 216 exits the housing 202 for connection to a power source. Each micro-vacuum pump 200 can be rated at 40 liters per minute (lpm) or 60 lpm and can be a 12 volt, 1 amp, 12 Watt pump within individual, independent vacuum ports 204, 206.
The plurality of micro-vacuum pumps 200 are each in fluid communication with the headspace 105 of the toilet bowl 104 either via the seat, FIGS. 8-13, or through the bowl, FIG. 14. Turning first to FIGS. 8-13, the plurality of smaller diameter tubing 126, which is flexible tubing, typically ¼ in tubing, is run along the bottom surface 119 of the toilet seat 118 and has each open end 127 positioned to face radially inward toward a central axis A (labeled in FIG. 14) of the toilet bowl 104. The plurality of smaller diameter tubing 126 will usually be 4, 5, 6, 7, or 8 tubing segments, most often 4 or 6 tubing segments. As shown in FIG. 8, the tubing 126 can be mounted to the bottom surface 119 of the toilet seat via the seat spacers 160. The spacers may have different troughs 162, 164 recessed therein that each form a through-path to hold the tubing 126 as needed for proper orientation relative to the toilet bowl.
Starting most proximate the tank of the toilet, a first seat spacer 160a is generally centrally positioned at the rear of the seat proximate the hinges. Referring to FIG. 11, this first seat spacer 160a has a plurality of troughs 162 that are linear from rear to front to direct each tubing 126 seated therein toward the toilet bowel. Each trough 162 is C-shaped with a narrowed opening to retain the tubing therein, especially when the toilet seat is lifted. The illustrated embodiment has two troughs, but could have more, if more micro-vacuum pumps are used. Now with reference to FIGS. 8 and 9, moving around the circumference of the toilet seat toward the front, there is a second seat spacer 160b that has two troughs 162, 164 therein. The first trough 162 is a linear trough generally from rear to front and the second trough 164 is an elbow trough 164. The elbow trough 164 begins in the rear surface of the seat spacer and exits toward the toilet bowel. The elbow is generally a 90 degree bend. The toilet seat has at least two of the second seat spacer 160b that are mirror images of one another, one being positioned on the left half of the toilet seat and the other on the right half. At least two of a third seat spacer 160c are present, one each on the left half and the right half of the toilet seat, positioned as mirror images of one another. The third seat spacers 160c form the terminus of the tubing around the toilet bowl and have there an elbow trough 164. Here also, the elbow trough 164 begins in the rear surface of the third seat spacer 160c and exits toward the toilet bowel. The elbow trough 164 has the necessary bend angle to have the opening 127 of the tubing 126 facing the toilet bowel.
With reference to FIGS. 12 and 13, in addition to seat spacers 160, closed ring(s) 170 or open C-shaped clip(s) 172 can be mounted therebetween to hold the tubing 126 in place. The closed ring(s) 170 and open C-shaped clip(s) 172 have a base 174 for mounting the same to the bottom surface 199 of the toilet seat 118, such as by adhesive, screws, hook- and loop fasteners, etc. There can be one, two, three, etc., rings or clips per base as needed to hold the respective lengths of tubing in place between the spacers.
Referring now to FIG. 14, a porcelain toilet 100′ is shown that was formed (cast) with internal vacuum flow channels 109 through the porcelain that terminate with air extraction ports 113 in the internal rim 107 of the toilet bowl 104. The internal vacuum flow channels 109 exit the toilet through the bottom, back or side of the toilet and have or were formed with a fitting for connection to tubing from the housing 202 for fluid communication with the plurality of micro-vacuum pumps 200. The internal vacuum flow channels 109 can be positioned in generally the same locations as the seat spacers described above—at least terminating in the rear of the toilet bowel and at least two in each of the left and half portions of the toilet bowel. The air extraction ports 113 in the two halves are generally equally spaced from one another.
In embodiments where the toilets are plastic, such as those used in many recreational vehicles, the plastic toilet may be formed with internal vacuum flow channels, can have holes drilled therein and fitted with fittings for the connection of tubing, or can have tubing fed through such holes to terminate with an open end facing the toilet bowel.
In yet another embodiment, existing toilets can be retrofitted with the system of FIG. 1 with a clamp that clips to the rim of the toilet bowl that holds one or more segments of flexible tubing in the proper orientation for the open end to face the toilet bowel.
In operation, the micro-vacuum pumps can be configured to turn on when the toilet is flushed and to run for a predetermined period-of-time thereafter. In one embodiment, the period-of time is three minutes. In another embodiment, the period-of-time is five minutes. such as for two minutes, three minutes, etc. In one embodiment, the housing is wired to a switch such that the user of the bathroom can turn the micro-vacuum pumps one and off at will. In one embodiment, the housing is electrically wired to be plugged into an outlet. In another embodiment, the housing is electrically hard wired into the electrical system of the building or RV.
The components discussed herein can be provided in a kit. The kit may include the housing with the vacuum pumps wired and fluidly connected as described above, the saddle with all its component parts, tubing for connecting the housing to the exhaust taps of the saddle, and tubing to connect the housing to the toilet. In some embodiment, the toilet and/or the toilet seat may be included. The toilet seat can include the seat spacers as described herein that hold the tubing. In a different embodiment, the kit can include the clamps that mount to the toilet bowl to hold the tubing at the proper orientation for the open ends to be facing the toilet bowl.
The system disclosed herein provides efficient and effective removal of odors directly from the toilet bowel without the odors permeating the room. The micro-vacuum pumps provide for a small package and the saddle having a direct connect to the vent stack utilizes the natural draw of the air in the vent stack.
It should be noted that the embodiments are not limited in their application or use to the details of construction and arrangement of parts and steps illustrated in the drawings and description. Features of the illustrative embodiments, constructions, and variants may be implemented or incorporated in other embodiments, constructions, variants, and modifications, and may be practiced or carried out in various ways. Furthermore, unless otherwise indicated, the terms and expressions employed herein have been chosen for the purpose of describing the illustrative embodiments of the present invention for the convenience of the reader and are not for the purpose of limiting the invention.
Having described the invention in detail and by reference to various embodiments thereof, it will be apparent that modifications and variations are possible without departing from the scope of the invention which is defined in the appended claims.
Patent Application
20230257983
