Multiple Feed Discharge Flush System
A multi-path discharge feed for a pressurized flush system of a water closet. The discharge feed fluidly connected to the pressurizable flush tank includes an inlet and a first outlet and a second outlet. Contents of the pressurizable flush tank are received via the inlet and distributed between a wash portion directed to the first outlet and a flush portion directed to the second outlet. The first outlet is fluidly connected to a plurality of wash jets. The second outlet is fluidly connected to a flush jet. The volume of fluid directed to the wash portion and the flush portion may be controlled by selecting the area of the first outlet and the area of second outlet, respectively.
Latest Patents:
- PHARMACEUTICAL COMPOSITIONS OF AMORPHOUS SOLID DISPERSIONS AND METHODS OF PREPARATION THEREOF
- AEROPONICS CONTAINER AND AEROPONICS SYSTEM
- DISPLAY SUBSTRATE AND DISPLAY DEVICE
- DISPLAY APPARATUS, DISPLAY MODULE, ELECTRONIC DEVICE, AND METHOD OF MANUFACTURING DISPLAY APPARATUS
- DISPLAY PANEL, MANUFACTURING METHOD, AND MOBILE TERMINAL
The field of the invention relates to pressurized flush systems. More particularly, the present invention relates to a pressurized a flush system having multiple fluid paths between the flush tank and the fixture.
BACKGROUND OF THE INVENTIONThis section is intended to provide a background or context to the invention that is recited in the claims. The description herein may include concepts that could be pursued, but are not necessarily ones that have been previously conceived or pursued. Therefore, unless otherwise indicated herein, what is described in this section is not prior art to the description and claims in this application and is not admitted to be prior art by inclusion in this section.
Water conservation has extended into most aspects of building planning and operation. This includes restroom fixtures such as urinals and water closets. Among the specific types of water closets, some utilize a pressurized flush tank to provide additional water pressure during a flush cycle beyond that provided by typical “gravity”-type flush systems. It has been recognized that traditional restroom fixtures were designed with a volume of flush water to handle a maximum design load. Yet typical usage does not approach this maximum amount, and waste can be cleared using a lesser volume of flush water. It is generally recognized that a pressurized flush provides benefits in the distance the volume “carries” in the drain pipe, as well as in allowing for a reduced flush water volume to clear any debris in the water closet.
Both conventional gravity-type flush systems as well as pressurized systems typically divide the total volume of flush water between a wash portion and a flush portion within the fixture. Water is directed from the tank (standard or pressurized) during a flush cycle through a single inlet and channeled to via distinct flow paths, typically raceways formed in the fixtures, to respective outlets. Water directed toward the wash portion typically enters the fixture near the top of bowl and may be distributed about the periphery of the bowl. The flush portion typically enters the fixture near the outlet, at or near the bottom of the fixture. Each of the portions generally encounters one or more restrictions, for example, bends of 90 degrees, in travelling through their respective flow paths. Such flow path configurations cause head loss, decreasing the velocity of flush flow and effectiveness of the flush system. Moreover, division of the total flush volume between the wash portion of flush volume is typically not optimized within the fixture.
Thus, mitigating restrictions in the flow path enhances flow of the flush water in the fixture and overall effectiveness of a flush cycle. Substantially optimized division of the total flush volume between the wash portion and the flush portion further enhances overall performance of the fixture. Enhancement of fluid flow characteristics and division may be particularly effective in pressurized tank systems and reduced flow systems where the total flush volume is often reduced from typical fixtures.
SUMMARY OF THE INVENTIONVarious embodiments of the present invention provide a multi-path pressurized flush system. A discharge feed fluidly connected to a flush tank includes an inlet and a first outlet, and a second outlet. The flush volume is received via the inlet and is divided between a wash portion directed to the first outlet and a flush portion directed to the second outlet. The first outlet is fluidly connected to a plurality of wash outlets generally disposed proximate the top of a bowl of the fixture. The second outlet is fluidly connected to a flush outlet generally disposed proximate the bottom of the bowl. The volume of fluid directed to the wash portion and the flush portion may be controlled by selecting the area of the first outlet and the area of second outlet, respectively. Selective adjustment of the area of the first outlet and/or second the second outlet permits flow optimization for a particular fixture or installation. The present invention mitigates head loss of the flush volume by reducing unnecessary restrictions in the flow path, thereby mitigating energy loss of the flush volume upon arrival to the bowl. Consequently, the invention may be used with a low flush volume, for example, about 4 liters, and an ultra-low flush volume, for example, about 2 liters.
One embodiment of the invention relates to a pressurized flush system. The pressurized flush system comprises a pressurizable flush tank having an inlet, an outlet, and a flush mechanism having a flush valve. The flush tank is disposed on a fixture and the fixture includes a bowl having a generally central jet flush opening and a plurality of wash jets positioned around an annulus of the bowl. A discharge feed is positioned in communication with the flush tank and the fixture and has a first opening and a second opening, the sum of the area of the first opening and the second opening being less than the area of the outlet. A first fluid flow path is defined by the first opening and a first tube and directs water from the flush tank to the flush jet. A second fluid flow path defined by the second opening and a second tube directs water from the flush tank to the wash jets.
Prior art fixtures, such as
In another embodiment, a pressurizable flush tank comprises a tank housing having a lower portion and an upper portion, the lower portion including an outlet. The tank housing includes an inlet in communication with a water supply line and an air and water inducer configured to pressurize the tank housing. A flush mechanism is disposed within the tank housing and in communication with a flush actuator positioned at least partially outside the tank housing. The flush mechanism further includes a flush valve controllably sealing the outlet. A discharge feed is attached to the outlet such that water exiting the outlet passes through the discharge feed, the discharge feed having a first opening and a second opening. The sum of the area of the first opening and the second opening is less than the area of the outlet. Water from within the tank housing flows through the outlet and through one of either the first opening or the second opening in a flush cycle.
These and other advantages and features of the invention, together with the organization and manner of operation thereof, will become apparent from the following detailed description when taken in conjunction with the accompanying drawings, wherein like elements have like numerals throughout the several drawings described below.
One type of pressurized system utilizes a tank that is pressurized by the water feed line pressure itself.
The system of
The pressure within the flush valve sleeve 30 and above the inner column 32 holds the inner column 32 against the action of a bias, such as a spring 33, so that the flush valve flange 34 is sealed against the flush valve seat 36. The flush valve 24 is actuated via a flush valve actuator 25. The flush valve actuator 25 engages the flush valve and initiates a flush cycle.
When a flush cycle has been initiated, the system discharges water from the tank 10 through the flush valve 24 to a water outlet line 16, which may be a flange, which is in communication with the bowl 40. The flush valve 24 is positioned, in the embodiment of
The present invention is directed to a pressurized flush system shown in
With reference to
The housing 110 generally comprises a hollow shell manifold with openings for the inlet 101 and the plurality of outlets 102/104. The inlet 101 maybe disposed proximate the top 111 of the housing 110. One or more of the plurality of outlets 102/104 may be deposed near a bottom 112 of the housing 110. The contents of tank 10 enter the housing 110 and are directed to the plurality of outlets 102/104. The housing 110 may comprise a cylindrical shape or other geometry. In the depicted embodiments, where one or more of the plurality of outlets 102/104 is disposed near the bottom 112, the housing 110 has a tapered cylindrical or frusta configuration. This configuration transitions the fluid path from the area of the inlet 101 to the area of the one or more of the plurality of outlets 102/104 disposed on the bottom 112, thereby mitigating head loss within the housing 110. However, one or more of the plurality of outlets 102/104 may be disposed along the lateral surface of the housing 110. The housing 110 may be constructed from a variety of materials including various plastics appropriate for use in plumbing, as known in the art.
One or more outlet may be used for purposes other then providing a fluid flow path. For example,
The housing 110 may also include one or more brackets 116 configured to operatively connect the discharge feed 100 to the tank 10. A plurality of openings 117 may be included on the one or more brackets 116. The plurality of openings 117 are adapted to receive connecting elements to secure the discharge feed 100 to the tank 10 and or the water outlet connection line 16.
The discharge feed 100 may also include an interface 114 in communication with the housing 110. The interface 114 is adapted to operatively connect to the water outlet line 16. The interface 114 may be adapted to directly connect to the water outlet line 16 or may connect to an intervening pipe or tube operatively connected to the water outlet line 16. The interface 114 may include threads, barbs, or other attachment features for operative connection to the water outlet line 16. Alternatively, the interface 114 may employ a slip or interference fit with the water outlet line 16. The operative connection may further be secured by a clamp, adhesive, or other feature. In an embodiment, the interface 114 is adapted to fit one or more of a standard water outlet line 16.
The discharge feed 100 includes a plurality of outlets 102/104/106, for example, the first outlet 102 and the second outlet 104, from the housing 110. Various embodiments, such as the embodiment depicted in
In one embodiment, each of the plurality of outlets 102/104/106 is adapted for operative connection to a flow path. Each outlet may feed into a separate flow path. Generally, the plurality of outlets 102/104/106 comprise substantially circular geometry for operative connection to a conventional pipe, hose, tube, or connector. However, the configuration of the plurality of outlets 102/104/106 is not so limited. For example,
As described, during a flush cycle, the flow paths 122/124 are in fluid communication with the discharge feed 100 and, in turn, the inlet 101. Accordingly, the contents of the tank 10 received by the inlet 101 are distributed among the plurality of outlets 102/104/106. The proportion of the contents of the tank 10 distributed to each of the plurality of outlets 102/104/106 substantially depends on the ratio of the areas of the corresponding plurality of openings 103/105/107. For example, in one embodiment of a discharge feed 100 with dual outlets where the area of the first opening 103 is 50 percent of the area of the second opening 105, about one-third of the contents will be directed to the first outlet 102 and about two-thirds of the contents will be directed to the second outlet 104. Similarly, in the instance of the discharge feed 100 with three outlets and the area of the first opening 103 is 75 percent of the area of the second opening 105 and the area of a third opening 107 is 25 percent the area of the opening the second opening 105, about three-eighths of the contents will be directed to the first outlet 102, about one-eighth of the contents will be directed to the third outlet 106, and about one-half of the contents will be directed to the second outlet 104.
Accordingly, the distribution of the contents of the tank 10 can be customized such that a specific volume of water in the tank 10 can be delivered to various portions of the bowl 40 by selection of the areas of the plurality of openings 103/105/107. In an embodiment, with first and second outlets 102/104, the area of the first opening 103 is between about 25 percent and 100 percent of the area of the second opening 105. In various embodiments, the sum of the areas of the plurality of the openings 103/105/107 is less than or equal to the area of the inlet 101.
In an embodiment, the area of one or more of the plurality of openings 103/105/107 is selectable to customize the distribution of the flush volume between the wash and the flush jets 45 for a particular fixture or installation. In a particular embodiment, one or more of the plurality of outlets 102/104/106 comprises a substantially frusta shape, defined by a length and a cross-sectional area and having an opening extending over the length that decreases with decreasing cross-sectional area as the cross-section of the outlet tapers with increasing distance from the housing 110. The length of one or more of the plurality of outlets 102/104/106 may provided with a predetermined length to achieve a specified area of the outlet. Alternatively, the length of one or more of the plurality of outlets 102/104/106 may trimmed before or substantially at the time of installation to a predetermined length to achieve the desired area of the outlet.
In another embodiment, a restricting element (not shown) may be operatively coupled to and in fluid communication with one or more of the plurality of outlets 102/104/106. The restricting element comprises an annular housing, which may include connecting elements such as threads, barbs, or other fitting. The area of the restricting element is substantially less than the area of the respective opening 103/105/107. Accordingly, placement of the restricting element in the flow path alters the effective area ratios of the plurality of openings 103/105/107. A plurality of restricting elements of varying annular area may be provided to achieve a customized flow distribution for a particular fixture or installation. In a particular embodiment, the restricting element comprises an adjustable valve of a type generally known in the art.
In particular embodiments the discharge feed 100 may be used in conjunction with a low flush volume, about 4 liters per flush cycle, pressurizable flush tank. In still other embodiments the discharge feed 100 may be used in conjunction with an ultra-low flush volume, less than about 2 liters per flush cycle, pressurizable flush tank. The configuration of the discharge feed 100 and capability for substantially direct fluid feed from the flush tank to the fixture outlets mitigates head loss, allowing for effective operation at low and ultra-low flush volumes. The foregoing description of embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the present invention to the precise form disclosed, and modifications and variations are possible in light of the above teachings or may be acquired from practice of the present invention. The embodiments were chosen and described to explain the principles of the present invention and its practical application to enable one skilled in the art to utilize the present invention in various embodiments and with various modifications as are suited to the particular use contemplated. The features of the embodiments described herein may be combined in all possible combinations of methods, apparatus, modules and systems.
Claims
1. A pressurized flush system, comprising:
- a pressurizable flush tank having an inlet, an outlet line, and a flush mechanism having a flush valve;
- the pressurizable flush tank disposed on a fixture, the fixture including a bowl having a generally central jet flush opening and a plurality of wash jets positioned around an annulus of the bowl;
- a discharge feed positioned in fluid communication with the pressurizable flush tank and the fixture, the discharge feed having an inlet, a first outlet and a second outlet, the first outlet having a first opening and the second outlet having a second opening;
- a first fluid flow path fluidly connecting the first opening and the plurality of wash jets; and
- a second fluid flow path fluidly connecting the second opening and the central flush jet.
2. The pressurized flush system of claim 1, wherein the area of the first opening is less than or substantially equal to the area of the second opening
3. The pressurized flush system of claim 2, wherein the area of the first opening is between about 50 percent and 100 percent of the area of the second opening.
4. The pressurized flush system of claim 1, wherein the sum of the area of the first opening and the second opening is less than the area of the inlet.
5. The pressurized flush system of claim 1, further comprising a third outlet having a third opening, wherein a third fluid flow path fluidly connects the third opening and the bowl.
6. The pressurized flush system of claim 1, wherein each of the first fluid flow path and the second fluid flow path comprise a component selected from the group consisting of pipe, tube, hose, or combinations thereof.
7. The pressurized flush system of claim 1, wherein one or more of the first outlet and the second outlet comprise a substantially frusta shape defined by a length, and wherein one or more of the area of the first opening and the second opening is configurable by altering the length.
8. The pressurized flush system of claim 1, further comprising a restricting element disposed in the first flow path or the second flow path.
9. The pressurized flush system of claim 8, wherein the restricting element comprises a selectively adjustable valve.
10. The pressurized flush system of claim 1, wherein the discharge feed includes a valve configured to create a vacuum break during a flush cycle.
11. The pressurized flush system of claim 1, wherein one or more barbs are disposed on an outer surface of one or more of the first outlet and the second outlet.
12. A pressurizable flush tank comprising:
- a tank housing having a lower portion and an upper portion, the lower portion including an outlet line;
- the tank housing having a water inlet in communication with a water supply line and an air and water inducer configured to pressurize the tank housing;
- a flush mechanism disposed within the tank housing and in communication with a flush actuator positioned at least partially outside the tank housing, the flush mechanism further includes a flush valve controllably sealing the outlet;
- a discharge feed operatively connected to the outlet line such that water exiting the outlet line passes through the discharge feed, the discharge feed having a first opening and a second opening, the sum of the area of the first opening and the second opening being less than or equal to the area of the outlet line.
13. The pressurizable flush tank of claim 12, wherein, during a flush cycle, water from within the tank housing flows through the outlet line and through one of either the first opening or the second opening.
14. The pressurizable flush tank of claim 13, further comprising:
- a fixture including a bowl having a generally central jet flush opening and a plurality of wash jets positioned around an annulus of the bowl;
- a first fluid flow path fluidly connecting the first opening and the plurality of wash jets; and
- a second fluid flow path fluidly connecting the second opening and the central flush jet.
15. The pressurizable flush tank of claim 14, wherein one or more of the first fluid flow path and the second fluid flow path comprise a pipe, tube, hose, or combinations thereof.
16. The pressurizable flush tank of claim 12, wherein the area of the first opening is between about 50 percent and 100 percent of the area of the second opening.
17. The pressurizable flush tank of claim 12, wherein the tank housing is adapted for a reduced flush volume.
18. A method of distributing water in a pressurized flush system comprising providing a pressurizable flush tank having an inlet, an outlet line, and a flush mechanism having a flush valve;
- providing a fixture including a bowl having a generally central jet flush opening and a plurality of wash jets positioned around an annulus of the bowl; and
- providing a discharge feed in fluid communication with the pressurizable flush tank and the fixture, the discharge feed having an inlet, a first opening, and a second opening,
- wherein the first opening is fluidly connectable to the plurality of wash jets via a first flow path, and wherein the second opening is fluidly connectable to the central jet flush via a second flow path defined by a pipe, tube, or hose.
19. The method of claim 18, wherein the area of the first opening is greater than the area of the second opening.
20. The method of claim 18, further comprising selectably establishing the area of the first opening or the area of the second opening.
Type: Application
Filed: Feb 27, 2009
Publication Date: Sep 2, 2010
Applicant:
Inventors: Amer Mansour (West Bloomfield, MI), Jerry Sobolewski (Canton, MI)
Application Number: 12/395,241