Bathing installations such as bath tubs, whirlpool baths, and spas may utilize air jets to deliver pressurized air into the bathing water in a bathing installation vessel. The installation of air jets to a vessel presents difficulties in attachment to the vessel, and connection of the air jets to a source of pressurized air.
Features and advantages of the disclosure will readily be appreciated by persons skilled in the art from the following detailed description when read in conjunction with the drawing wherein:
In the following detailed description and in the several figures of the drawing, like elements are identified with like reference numerals.
Exemplary embodiments of air jets for bathing installations are described. The air jets may serve as air massage jets for the bathing installation. In an exemplary embodiment, the air jet mounts to the outside surface of the bath shell or tub. The exemplary embodiments may include one or more of the following features:
(1) The air jet provides a stealth or minimalistic look to the inside of the bathing installation tub.
2) Air exits the air jet into the bath by a small hole drilled through the shell of the bath concentric with an air exit orifice in the jet.
3) The air jet is configured to mount to the vertical sides of the bath tub or beneath the floor of the tub.
4) The air jet can be used with or without an internal check valve or one way flow valve.
5) The air jet connection for attachment to an air hose may be smooth, barbed or socket-type connections, for example. For a smooth and a barbed connection, the hose end is slid over the outer surface of the air jet connecting port. For a socket-type connection, a socket connection is fitted inside the air jet connecting portion.
6) The connection(s) for air hose(s) may be in an “L” or “T” shape.
7) The connection for the air hose (“L” or “T”) may also be angled or compound angled thus appearing in a “V” type or broken wing appearance, and may provide one or more of the following features:
8) The air jet may be provided to the customer as a single piece construction, without requiring threaded multi-piece end flanges or threaded bodies to assemble with annular seals.
9) Slots may be provided around a recessed mounting lip to allow excess adhesive or glue to exit and not block the hole for airflow in the tip of the body.
10) Air exits through a protruding nozzle tip on the mounting surface of the air jet that is at the same height or plane with the outer lip of the mounting surface, in one exemplary embodiment. This keeps adhesive or glue from entering the air exit orifice.
11) A protruding nozzle tip may be provided around the air exit orifice which protrudes past the plane described by the outer lip of the mounting surface, in another embodiment. This protruding nozzle tip can extend into a recess or chamfer around the tub shell hole in the back side of the tub shell for ease of installation and to keep adhesive or glue from entering the air exit orifice.
12) The air jet may be installed in the following set of steps:
13) The air jet can be installed on a bath as an air massage system only or in conjunction with a hydrotherapy system utilizing water jets.
14) An air massage system includes a source for positive air pressure that is sent through a plumbing system and hose to arrive at the air jet hose connection and passes thought the air jet exiting through the orifice and then through the hole in the tub shell into the bath. If an internal check valve is in the air jet, the air pressure must be sufficient open the check valve to have the air exit the orifice and through the wall in the side of the tub.
15) The internal air check valve prevents water from back flowing into the air jet and plumbing keeping the plumbing system “dry”. This permits the air to flow into the bath more quickly when the system is initiated since there is no water to evacuate from the plumbing. The check valve also keeps water from remaining in the lines, preventing any retained water.
The figures illustrate several embodiments of an air jet incorporating one or more of the features described above.
The body opening 64 in this exemplary embodiment is generally cylindrical with a stepped change in diameter from a first diameter of opening portion 64A to a second, larger diameter of opening portion 64B, to define a shoulder 64C. The valve 80 has an outer diameter sized to fit into the first opening portion 64A, and in this embodiment includes a first valve body portion 84 with an exterior peripheral elastomeric O-ring 84A to provide an interference, sealing fit of the valve into the air jet body. The nozzle 70 and the tub shell wall also serve to maintain the valve 80 in position after installation of the air jet to the tub wall.
The air jet nozzle 70 is fitted into the opening portion 64B of the body 60, and is seated against the shoulder 64C. The nozzle 70 is press fit into engagement with the jet body in an exemplary embodiment. In an exemplary embodiment the nozzle includes a substantially cylindrical portion 70A, with a protruding tapered nozzle tip 70B extending from the surface 70C of the portion 70A. In an exemplary embodiment, the nozzle includes a through opening or orifice 70D passing through the nozzle body, into a nozzle recess opening 70E formed in the interior side of the nozzle 70 when installed in the jet body, to communicate with the body opening 64 of the jet body structure 60 via the one-way flow valve 80. In this exemplary embodiment, the face surface 70B-1 of the nozzle tip 70B is about flush with the edge 66B-1 of the lip portion 66B. In other embodiments, the face surface extends beyond the edge of the lip portion and may serve as a pilot to align to the opening formed through a tub wall, as describe below in further detail.
In an exemplary embodiment, the flow valve 80 is a check valve including a poppet spring 82 which applies a bias force tending to hold a poppet or plunger 86 in a closed position against an inwardly projecting peripheral lip portion or valve seat of the check valve body. When sufficient air pressure is applied to the airjet, the spring 82 is compressed, the air pressure pushing the poppet 86 away from the peripheral lip portion and opening an air channel between the air passageway 62C and the nozzle 70. A stem portion of the poppet 86 is displaced through the opening 88A formed in the web portion 88B of the valve cage portion 88. With air pressure diminished below a valve break pressure, the spring pushes the poppet back into sealing engagement with the peripheral lip portion. One way flow valves suitable for the purpose are commercially available.
The air jet body 60 includes a flange portion 66, defining a recessed mount surface 66A defined inside a peripheral lip 66B at a mounting surface side of the jet body 60, and forming a shallow recess 66C. Slots 66D are defined in the peripheral lip 66B, and allow excess adhesive applied to the mount surface 66A within the recess 66C to escape during installation. Typically the adhesive is a liquid or gel such as an epoxy when applied and then cures to a hardened state.
The air jet body 60 and nozzle 70 may each be fabricated as injection molded parts, from a plastic material, e.g. PVC or ABS. In an exemplary embodiment, the air jet 50 is delivered to a customer/user as an assembled device, i.e. with the nozzle and one-way valve assembled to the jet body, facilitating installation by reducing or eliminating the need to assemble the air jet before installation.
In this exemplary embodiment, each tube connection projects from the perpendicular to the jet center axis 102 by angle A (
The center axis 102 of the jet body is aligned with the hole 12 formed in the tub wall. A guide pin pushed through the hole 12 in the tub may be used to align the nozzle orifice 120D of the nozzle with the hole 12. The nozzle tip 120B face surface contacts the tub shell surface surrounding the hole 12 to prevent liquid adhesive from flowing into the shell hole 12; a guide pin when used during installation also prevents adhesive flow into the hole 12. In an exemplary embodiment, the tub wall may be fiberglass, with a thickness of ⅛ (0.125) inch, and the hole 12 drilled or formed in the wall has a diameter of 0.125 inch. The nozzle orifice 120D may in this example also have a diameter of 0.125 inch. In this embodiment, the diameter of the front flange portion is 1.16 inches, and the length of the body portion, i.e. the distance the body portion protrudes from the wall when attached to the wall, is 1.125 inches. Thus, for this exemplary embodiment, the flange diameter and the body portion length are both less than about 1.25 inches
The air jets of the second circuit 230 are mounted in the bottom wall 202B of the tub 202. The jets in this exemplary circuit may be of the straight T configuration of jet 50, with the terminal jet in the string an L-shaped jet having the configuration of jet 150. The jets in the tub bottom will typically include a one-way valve to prevent water from entering the air jet circuit air passageways.
The source 210 of system 200 may be controlled by an air switch 240, or by an electronic control panel 242, by way of example only.
The beveled or chamfered hole 12 may be formed in the tub wall by a special drill bit such as bit 300 illustrated in
The air jet is well suited for use in bathing installations such as whirlpool baths or bath tubs, with air massage systems.
Although the foregoing has been a description and illustration of specific embodiments of the subject matter, various modifications and changes thereto can be made by persons skilled in the art without departing from the scope and spirit of the invention.
Number | Name | Date | Kind |
---|---|---|---|
3251071 | Wood | May 1966 | A |
3467969 | Szekely | Sep 1969 | A |
3580275 | Hanson | May 1971 | A |
4387854 | Dupont | Jun 1983 | A |
4672692 | Savage | Jun 1987 | A |
4805664 | Mattei | Feb 1989 | A |
4901379 | Chalberg | Feb 1990 | A |
5381563 | Isabelle | Jan 1995 | A |
5546617 | Sandrin | Aug 1996 | A |
5930851 | Brunelle | Aug 1999 | A |
6427257 | Castellote | Aug 2002 | B1 |
7454802 | Tennant | Nov 2008 | B2 |
7614095 | Swart | Nov 2009 | B2 |
7665158 | Castellote | Feb 2010 | B2 |
8182212 | Parcell | May 2012 | B2 |
20040083544 | Castellote | May 2004 | A1 |
20060236448 | Ciechanowski et al. | Oct 2006 | A1 |
20070067900 | Moretto | Mar 2007 | A1 |
20080276363 | Chen | Nov 2008 | A1 |
Number | Date | Country | |
---|---|---|---|
20140033420 A1 | Feb 2014 | US |