CA2048109A1 - Anti-flooding bypass for an electrical cabinet - Google Patents
Anti-flooding bypass for an electrical cabinetInfo
- Publication number
- CA2048109A1 CA2048109A1 CA 2048109 CA2048109A CA2048109A1 CA 2048109 A1 CA2048109 A1 CA 2048109A1 CA 2048109 CA2048109 CA 2048109 CA 2048109 A CA2048109 A CA 2048109A CA 2048109 A1 CA2048109 A1 CA 2048109A1
- Authority
- CA
- Canada
- Prior art keywords
- duct
- cabinet
- water
- vacuum line
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims description 13
- 230000007257 malfunction Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 4
- 238000003287 bathing Methods 0.000 claims 2
- 230000025508 response to water Effects 0.000 claims 2
- 230000000284 resting effect Effects 0.000 claims 2
- 230000035939 shock Effects 0.000 abstract 1
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000012629 purifying agent Substances 0.000 description 2
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
ANTI-FLOODING BYPASS FOR AN ELECTRICAL CABINET
An ozone generator system for example for a hot tub includes electrical components mounted within a cabinet for generation of the ozone. The ozone is communicated from the cabinet to the hot tub by a vacuum line connected to a venturi within the water flow circuit of the hot tub. In order to prevent backflow of water along the vacuum line causing damage to the ozone generator and possible electrical shock hazard, a bypass valve arrangement is provided which causes any backflowing water to bypass the cabinet and to be discharged outside the cabinet. The bypass valve includes a venturi and a spring biased closure valve which will be opened by the weight of water against the valve.
ANTI-FLOODING BYPASS FOR AN ELECTRICAL CABINET
An ozone generator system for example for a hot tub includes electrical components mounted within a cabinet for generation of the ozone. The ozone is communicated from the cabinet to the hot tub by a vacuum line connected to a venturi within the water flow circuit of the hot tub. In order to prevent backflow of water along the vacuum line causing damage to the ozone generator and possible electrical shock hazard, a bypass valve arrangement is provided which causes any backflowing water to bypass the cabinet and to be discharged outside the cabinet. The bypass valve includes a venturi and a spring biased closure valve which will be opened by the weight of water against the valve.
Description
2 ~
ANTI-FLOODING BYPASS FOR AN ELECTRICAL CABINET
,, .
B~CKGROUND OF THE INVENTION
This invention relates to an anti-flooding bypass for an electrical cabinet and particularly but not exclusively to an electrical cabinet of the type for generating ozone within air withdrawn from the cabinet for communication to a water purifying system.
Water purifying systems using ozone generators are becoming more and more popular in view of the advantageous properties of the ozone as a purifying agent. Devices of this type can be used in various arrangements for example swimming pools, hot tubs, and containers of water for food processing systems.
In general the ozone generator comprises a cabinet which contains various electrical equipment particularly including an ultra violet source which causes the generation of the ozone molecules within the air supply provided within the cabinet. Generally air laden with the ozone is drawn from the cabinet through a vacuum line with replacement air entering the cabinet through relatively small opening. This of course confines the ozone to ensure that it is properly drawn only along the vacuum line for supply to the system to be purified.
; One problem which can occur with arrangements :,- ,, ,~. . , ~ , -of this type is that in the event of a malfunction for example blockage or other mistreatment of the equipment, water can back up along the vacuum line under pressure from the equipment and can enter the cabinet with the consequent problems of potential damage and danger from electric shock.
Generally this problem is limited by electrical codes which require the location of the cabinet at a height well above the system to limit the possibility of the water backing up against gravity to the cabinet. However this remains an unsolved problem within the industry.
SUMMARY OF THE INVENTION
,. _ . ~= ... . ..
According to the invention, therefore, there is provided a system for use in ozonating water comprising a container for the water, an ozone generator including a cabinet, an air inlet into the cabinet, electrical components within the cabinet for generating ozone, a vacuum line having an inlet end for extracting ozone laden air from the cabinet and an outlet end, means for injectin~ the ozone laden air from the outlet end of the vacuum line into the container, and flooding bypass means connected to the vacuum line including a discharge outlet for discharging water, introduced into the outlet end of the ~acuum line due to a malfunction of the system, said discharge outlet being arranged such that the water is discharged outside of said cabinet.
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According to a second aspec~ of the invention, therefore, there is provided an electrical apparatus comprising a cabinet, at least one electrical component mounted within the cabinet, a duct, a first opening means provided in the duct and connecting the duct to the interior of the cabinet, a second opening means in the duct positioned below the first opening means and extending from the duct to an exterior location of the cabinet, valve means in the duct normally closing the second opening means and responsive to the presence of liquid through the second opening means within the duct to release the liquid to the exterior of the cabinet and a third opening means communicating from the duct for connection to a vacuum line.
With the foregoing in view, and other advantages as will become apparent to those skilled in the art to which this invention relates as thi~; specification proceeds, the invention is herein described by reference to the accompanying drawings forming a part hereof, which includes a description of the best mode known to the applicant and of the preferred typical embodiment of the principles of the present invention, in which:
DESCRIPTION OF THE DRAWINGS
Figure 1 is a schematic illu~tration of a purifying system for a hot tub using an ozone generator and including the anti-flooding bypass of the present invention.
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Figure 2 is a cross sectional view through the cabinet and the anti flooding bypass of the present inventionO
In the drawings like characters of reference indicate corresponding parts in the different figures.
Figure 3 is a schematic illustration of a modified system for a hot tub using an anti-flooding bypass according to the present invention.
DETAILED DESCRIPTION
A container of water is indicated at 10 in this example comprising a hot tub system including a drain opening 11, a pump 12, a heater 13, an air inlet venturi 14 and a return jet 15.
The venturi 14 is arranged to draw air into the water driven by the pump 12 and passing through the line 16 to the return jet 15. An air inlet is indicated at 17 and in addition the same air line is connected to an ozone generator 18 of conventional construction. The venturi 14 thus forms a vacuum line 19 which acts to extract ozone within the ozone generator through an opening 20 into a duct 21 so that the ozone can be withdrawn from the cabinet and injected into the circulating water to act as a purifying agent. Replacement air enters the cabinet through a single opening 22 sized to release into the cabinet the required amount of air to replace that withdrawn through the vacuum line 19. Schematically the ., ~ .
, ~, ; :, ,: :: ~' , electrical components for controlling and generating the ozone are indicated at 23 and these are of conventional construction and accordingly will not be described in detail.
Turning now to Figure 2 the cabinet 13 includes an upper wall 25, side wall 26 and a base wall 27 together with further walls (not shown) forming a substantially enclosed housing containing electrical equipment (not shown in Figure 2).
The anti-flooding bypass generally indicated at 21 includes a duct 28 which commences at a hose coupling 29 on the top wall 25 of the housing and extends through the housing to a valve arrangement 30 supported underneath the housing. Between those two exterior couplings is provided a continuous duct having an outer sleeve 31 and an inner tube 32 arranged coaxially alony the interior of the outer tube or sleeve 31. The interior of the tube 32 communicates with the hollow interior of the coupling 29 so that air can be drawn b~
a vacuum line connected to the coupling 29 through the hollow interior of the tube 32. At the lower end of the tube 32 is arranged a venturi generally indicated at 33 having an outer venturi section 3~ mounted on an inside surface of the tube 31.
The inlet to the venturi is mounted on the lower end of the tube 32 and air can enter into the venturi between the inlet 35 on the lower end of the tube 32 and the outer venturi section lv`
34. This air is thus drawn from the area surrounding the tube 32 that is the space between the tube 32 and the tube 31.
In the event of a flow of liquid or air therefore down the inner tube 32, this liquid or air is injected through the outer venturi section to generate a vacuum within the space between the tubes thus drawing air through the opening 20 communicating from the interior of the cabinet to the space between the tubes.
At the lower end of the tube 31 is mounted the valve arrangement 30 which is of the back check valve type including a frusto-conical seat 40 which receives a ball 41 or ceiling member which is spring biased upwardly into contact with the seat 40 by a spring 42 so as l:o maintain the lower end of l:he duct normally closed~ In the event that liquid from the duct comes to rest upon the ceiling member 41, the weight of a liquid will cause the ceiling member to open against a spring bias allowing the liquid to escape. The spring is arranged so that a relatively small quantity of liguid opens the valve and ensures that it remains open while any liquid is present to be discharged.
In normal operation, the vacuum line connected to the coupling 29 causes flow of air along the inner tube 32 in the upward direction and this draws air and ozone through the opening 20 into the space and then basically in the reverse '~ ` : ' ~'' :
direction through the venturi which is designed with sufficient orifice to allow the ozone laden air to be transported through that opening and into the vacuum line.
As soon as there is a back up of liquid, however, the li~uid flows down the tube 32 in the direction reverse to the normal direction causing the venturi to act to generate a suction at the opening 20 to prevent any possibility of liquid bac~ing up into the space and then exiting through the opening 20. All liquid thus passing down the tube 32 passes through the venturi into the lower part of the duct and escapes past the valve 30.
For convenience of mechanical construction, the tube 31 is formed in three parts including an upper cap section 45 having a surrounding flange with the upper cap section ~5 being coupled to the centre section of the tube by a screw threaded sleeve 46. The opening through which the duct passes in the upper wall 25 can be closed by the clamping action of the upper face of the sleeve 46 against the underside of the flange 45. Similarly the centre section of ~he tube 31 is coupled to a lower section 47 which in turn is formed as part of or is coupled to the valve 30. The valve 30 also includes a cap section 4~ and a sleeve section 49 which can be used to clamp the valve to the opening in the lower wall 27 of the cabinet.
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Turning now to Figure 3, a slightly modified arrangement is shown for use with a hot tub. In this embodiment the hot tub is illustrated at 50 and includes an inlet jet 51 and an outlet drain opening 52. A pump 53 is arranged to pump water in a circuit from the outlet drain 52 through a filter schematically indicated at 54 to the jet 51 in conventional manner. In this embodiment the jet includes a pipe 55 which can communicate with other jets of the same type at different locations on the periphery of the tub. The jet further includes a venturi 56 which draws air into the jet from an air supply pipe 57. The air supply pipe 57 is connected to a manually operable air inlet valve 58 mounted in a lip 59 of the tub. The air inlet valve 58 is of a conventional type including a mounting plate 60 and a rotatable cap 61 which is screw threaded into the mounting plate 60 90 that it can be raised and lowered by rotation of the cap 61. The cap includes holes which are exposed when the cap is screwed outwardly from the mounting plate 60 to allow air to enter at that point to pass along the tube 57 to the jet to introduce air into the jet if required by the occupants of the tub. This arrangement is conventional and is illustrated only schematically for this reason.
A present embodiment further includes a vacuum line 62 drawing air from an ozone generator 63 to be introduced : , ..
: .
: .
2 ~
into the water through the tube 57 and the venturi 56.
The vacuum line 62 passes through a sealed opening in the tube 57 and extends therefrom upwardly through the tube 57 to a position closely adjacent or within the valve 58. At the end of the line 62 is provided a back check valve 64. With the valve 58 closed, therefore, vacuum generated in the tube 57 by the venturi 56 is communicated to the vacuum line 62 through the back check valve 64 so that air is drawn from the ozone generator into the tub. The backcheck valve 64 is located above the level of the water within the tub so that it is generally protected from water reaching the backcheck valve except in the event of a blockage in the jet system so that pump pressure is applied along the tube 57 in the reverse direction. The backcheck valve is of a type to prevent water from entering into the vacuum line 62 by preventing reverse flow in the preisence of pressure downstream of the backcheck valve exceeding khe pressure within the vacuum line 62.
The vacuum line 62 communicates with a bypass device 65 of the same construction as that illustrated in Figure 2.
Thus the bypass device 65 includes a duct 66 having a first opening 67 communicating through a tube 68 to the ozone generator 63. The duct 66 further includes a second opening 69 controlled by a bowl valve 70 of the type previously _ 9 _ ' :
, , , described. The duct further includes a venturi 71 of the type also shown in Figure 2. The outlet from the duct connects to the inlet end of the vacuum line 62.
In this embodiment most of the electrical control elements for the ozone generator are provided in a separate unit 73 so that the bypass duct is separate from the ozone generator which is in turn separate from the control unit. This provides yet further safety in the event of water pressure causing water to flow back toward the ozone generator and in addition allows more flexibility in the location of the parts in the relatively constricted area around the tub beneath the lip 59.
.:~
Since various modifications can be made in rny . .
`~` invention as hereinabove described, and many apparently widely different embodiments of same made within the spirit and scope ,l of the claims without departing from such spirit and scope, it ~d is intended that all matter contained in the accompanying ,: `
specification shall be interpreted as illustrative only and not in a limiting sense.
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'`~' '; -- 10 --`:
v .
~,:
ANTI-FLOODING BYPASS FOR AN ELECTRICAL CABINET
,, .
B~CKGROUND OF THE INVENTION
This invention relates to an anti-flooding bypass for an electrical cabinet and particularly but not exclusively to an electrical cabinet of the type for generating ozone within air withdrawn from the cabinet for communication to a water purifying system.
Water purifying systems using ozone generators are becoming more and more popular in view of the advantageous properties of the ozone as a purifying agent. Devices of this type can be used in various arrangements for example swimming pools, hot tubs, and containers of water for food processing systems.
In general the ozone generator comprises a cabinet which contains various electrical equipment particularly including an ultra violet source which causes the generation of the ozone molecules within the air supply provided within the cabinet. Generally air laden with the ozone is drawn from the cabinet through a vacuum line with replacement air entering the cabinet through relatively small opening. This of course confines the ozone to ensure that it is properly drawn only along the vacuum line for supply to the system to be purified.
; One problem which can occur with arrangements :,- ,, ,~. . , ~ , -of this type is that in the event of a malfunction for example blockage or other mistreatment of the equipment, water can back up along the vacuum line under pressure from the equipment and can enter the cabinet with the consequent problems of potential damage and danger from electric shock.
Generally this problem is limited by electrical codes which require the location of the cabinet at a height well above the system to limit the possibility of the water backing up against gravity to the cabinet. However this remains an unsolved problem within the industry.
SUMMARY OF THE INVENTION
,. _ . ~= ... . ..
According to the invention, therefore, there is provided a system for use in ozonating water comprising a container for the water, an ozone generator including a cabinet, an air inlet into the cabinet, electrical components within the cabinet for generating ozone, a vacuum line having an inlet end for extracting ozone laden air from the cabinet and an outlet end, means for injectin~ the ozone laden air from the outlet end of the vacuum line into the container, and flooding bypass means connected to the vacuum line including a discharge outlet for discharging water, introduced into the outlet end of the ~acuum line due to a malfunction of the system, said discharge outlet being arranged such that the water is discharged outside of said cabinet.
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According to a second aspec~ of the invention, therefore, there is provided an electrical apparatus comprising a cabinet, at least one electrical component mounted within the cabinet, a duct, a first opening means provided in the duct and connecting the duct to the interior of the cabinet, a second opening means in the duct positioned below the first opening means and extending from the duct to an exterior location of the cabinet, valve means in the duct normally closing the second opening means and responsive to the presence of liquid through the second opening means within the duct to release the liquid to the exterior of the cabinet and a third opening means communicating from the duct for connection to a vacuum line.
With the foregoing in view, and other advantages as will become apparent to those skilled in the art to which this invention relates as thi~; specification proceeds, the invention is herein described by reference to the accompanying drawings forming a part hereof, which includes a description of the best mode known to the applicant and of the preferred typical embodiment of the principles of the present invention, in which:
DESCRIPTION OF THE DRAWINGS
Figure 1 is a schematic illu~tration of a purifying system for a hot tub using an ozone generator and including the anti-flooding bypass of the present invention.
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'': . :~:
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::
2 ~
Figure 2 is a cross sectional view through the cabinet and the anti flooding bypass of the present inventionO
In the drawings like characters of reference indicate corresponding parts in the different figures.
Figure 3 is a schematic illustration of a modified system for a hot tub using an anti-flooding bypass according to the present invention.
DETAILED DESCRIPTION
A container of water is indicated at 10 in this example comprising a hot tub system including a drain opening 11, a pump 12, a heater 13, an air inlet venturi 14 and a return jet 15.
The venturi 14 is arranged to draw air into the water driven by the pump 12 and passing through the line 16 to the return jet 15. An air inlet is indicated at 17 and in addition the same air line is connected to an ozone generator 18 of conventional construction. The venturi 14 thus forms a vacuum line 19 which acts to extract ozone within the ozone generator through an opening 20 into a duct 21 so that the ozone can be withdrawn from the cabinet and injected into the circulating water to act as a purifying agent. Replacement air enters the cabinet through a single opening 22 sized to release into the cabinet the required amount of air to replace that withdrawn through the vacuum line 19. Schematically the ., ~ .
, ~, ; :, ,: :: ~' , electrical components for controlling and generating the ozone are indicated at 23 and these are of conventional construction and accordingly will not be described in detail.
Turning now to Figure 2 the cabinet 13 includes an upper wall 25, side wall 26 and a base wall 27 together with further walls (not shown) forming a substantially enclosed housing containing electrical equipment (not shown in Figure 2).
The anti-flooding bypass generally indicated at 21 includes a duct 28 which commences at a hose coupling 29 on the top wall 25 of the housing and extends through the housing to a valve arrangement 30 supported underneath the housing. Between those two exterior couplings is provided a continuous duct having an outer sleeve 31 and an inner tube 32 arranged coaxially alony the interior of the outer tube or sleeve 31. The interior of the tube 32 communicates with the hollow interior of the coupling 29 so that air can be drawn b~
a vacuum line connected to the coupling 29 through the hollow interior of the tube 32. At the lower end of the tube 32 is arranged a venturi generally indicated at 33 having an outer venturi section 3~ mounted on an inside surface of the tube 31.
The inlet to the venturi is mounted on the lower end of the tube 32 and air can enter into the venturi between the inlet 35 on the lower end of the tube 32 and the outer venturi section lv`
34. This air is thus drawn from the area surrounding the tube 32 that is the space between the tube 32 and the tube 31.
In the event of a flow of liquid or air therefore down the inner tube 32, this liquid or air is injected through the outer venturi section to generate a vacuum within the space between the tubes thus drawing air through the opening 20 communicating from the interior of the cabinet to the space between the tubes.
At the lower end of the tube 31 is mounted the valve arrangement 30 which is of the back check valve type including a frusto-conical seat 40 which receives a ball 41 or ceiling member which is spring biased upwardly into contact with the seat 40 by a spring 42 so as l:o maintain the lower end of l:he duct normally closed~ In the event that liquid from the duct comes to rest upon the ceiling member 41, the weight of a liquid will cause the ceiling member to open against a spring bias allowing the liquid to escape. The spring is arranged so that a relatively small quantity of liguid opens the valve and ensures that it remains open while any liquid is present to be discharged.
In normal operation, the vacuum line connected to the coupling 29 causes flow of air along the inner tube 32 in the upward direction and this draws air and ozone through the opening 20 into the space and then basically in the reverse '~ ` : ' ~'' :
direction through the venturi which is designed with sufficient orifice to allow the ozone laden air to be transported through that opening and into the vacuum line.
As soon as there is a back up of liquid, however, the li~uid flows down the tube 32 in the direction reverse to the normal direction causing the venturi to act to generate a suction at the opening 20 to prevent any possibility of liquid bac~ing up into the space and then exiting through the opening 20. All liquid thus passing down the tube 32 passes through the venturi into the lower part of the duct and escapes past the valve 30.
For convenience of mechanical construction, the tube 31 is formed in three parts including an upper cap section 45 having a surrounding flange with the upper cap section ~5 being coupled to the centre section of the tube by a screw threaded sleeve 46. The opening through which the duct passes in the upper wall 25 can be closed by the clamping action of the upper face of the sleeve 46 against the underside of the flange 45. Similarly the centre section of ~he tube 31 is coupled to a lower section 47 which in turn is formed as part of or is coupled to the valve 30. The valve 30 also includes a cap section 4~ and a sleeve section 49 which can be used to clamp the valve to the opening in the lower wall 27 of the cabinet.
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2 ~
Turning now to Figure 3, a slightly modified arrangement is shown for use with a hot tub. In this embodiment the hot tub is illustrated at 50 and includes an inlet jet 51 and an outlet drain opening 52. A pump 53 is arranged to pump water in a circuit from the outlet drain 52 through a filter schematically indicated at 54 to the jet 51 in conventional manner. In this embodiment the jet includes a pipe 55 which can communicate with other jets of the same type at different locations on the periphery of the tub. The jet further includes a venturi 56 which draws air into the jet from an air supply pipe 57. The air supply pipe 57 is connected to a manually operable air inlet valve 58 mounted in a lip 59 of the tub. The air inlet valve 58 is of a conventional type including a mounting plate 60 and a rotatable cap 61 which is screw threaded into the mounting plate 60 90 that it can be raised and lowered by rotation of the cap 61. The cap includes holes which are exposed when the cap is screwed outwardly from the mounting plate 60 to allow air to enter at that point to pass along the tube 57 to the jet to introduce air into the jet if required by the occupants of the tub. This arrangement is conventional and is illustrated only schematically for this reason.
A present embodiment further includes a vacuum line 62 drawing air from an ozone generator 63 to be introduced : , ..
: .
: .
2 ~
into the water through the tube 57 and the venturi 56.
The vacuum line 62 passes through a sealed opening in the tube 57 and extends therefrom upwardly through the tube 57 to a position closely adjacent or within the valve 58. At the end of the line 62 is provided a back check valve 64. With the valve 58 closed, therefore, vacuum generated in the tube 57 by the venturi 56 is communicated to the vacuum line 62 through the back check valve 64 so that air is drawn from the ozone generator into the tub. The backcheck valve 64 is located above the level of the water within the tub so that it is generally protected from water reaching the backcheck valve except in the event of a blockage in the jet system so that pump pressure is applied along the tube 57 in the reverse direction. The backcheck valve is of a type to prevent water from entering into the vacuum line 62 by preventing reverse flow in the preisence of pressure downstream of the backcheck valve exceeding khe pressure within the vacuum line 62.
The vacuum line 62 communicates with a bypass device 65 of the same construction as that illustrated in Figure 2.
Thus the bypass device 65 includes a duct 66 having a first opening 67 communicating through a tube 68 to the ozone generator 63. The duct 66 further includes a second opening 69 controlled by a bowl valve 70 of the type previously _ 9 _ ' :
, , , described. The duct further includes a venturi 71 of the type also shown in Figure 2. The outlet from the duct connects to the inlet end of the vacuum line 62.
In this embodiment most of the electrical control elements for the ozone generator are provided in a separate unit 73 so that the bypass duct is separate from the ozone generator which is in turn separate from the control unit. This provides yet further safety in the event of water pressure causing water to flow back toward the ozone generator and in addition allows more flexibility in the location of the parts in the relatively constricted area around the tub beneath the lip 59.
.:~
Since various modifications can be made in rny . .
`~` invention as hereinabove described, and many apparently widely different embodiments of same made within the spirit and scope ,l of the claims without departing from such spirit and scope, it ~d is intended that all matter contained in the accompanying ,: `
specification shall be interpreted as illustrative only and not in a limiting sense.
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'`~' '; -- 10 --`:
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~,:
Claims
(2) The system according to Claim 1 wherein the bypass means comprises a duct having an opening into the duct connecting with the cabinet for extracting said ozone laden air from within the cabinet and valve means normally preventing air entering said discharge outlet and operable on presence of water in the duct to open to release said water through said discharge outlet.
(3) The system according to Claim 2 wherein the duct includes venturi means arranged to generate a vacuum in said duct at said opening in response to water flowing through the duct toward said discharge outlet.
(4) The system according to Claim 3 wherein the duct includes an inner tube, an outer tube, said inner tube being mounted within the outer tube and defining a space therebetween, said opening being provided in the outer tube, said venturi means being arranged at a lower end of the inner tube arranged to draw air from the space on the flow of water through the venturi means from the inner tube, said venturi means being arranged such that in the absence of water flow through the inner tube, ozone laden air is drawn through said opening and in a reverse direction through said venturi into said inner tube to said vacuum line.
(5) The system according to any one of Claims 2 to 4 wherein the valve means comprises a one way check valve having a sealing member spring biased into an upper closed position and movable downwardly from the closed position under the weight of water resting thereon from the duct to push the sealing member into an open position.
(6) The system according to any one of Claims
1 to 4 wherein the bypass means is mounted within the cabinet with said discharge outlet thereof extending outside of the cabinet.
(7) The system according to Claim wherein the vacuum line includes a check valve therein.
(8) The system according to Claim wherein the vacuum line includes a check valve therein located in the line at a height above an upper level of the water in the container.
(9) The system according to Claim wherein the container comprises a tub into which one or more persons can enter for bathing.
(10) The system according to Claim wherein the container comprises a tub into which one or more persons can enter for bathing, and wherein the vacuum line is connected to a manually operable air inlet valve mounted on a side wall of the tub, the check valve being located adjacent the air inlet valve.
(11) An electrical apparatus comprising a cabinet, at least one electrical component mounted within the cabinet, a duct, a first opening means provided in the duct and connecting the duct to the interior of the cabinet, a second opening means in the duct positioned below the first opening means and extending from the duct to an exterior location of the cabinet, valve means in the duct normally closing the second opening means and responsive to the presence of liquid through the second opening means within the duct to release the liquid to the exterior of the cabinet and a third opening means communicating from the duct for connection to a vacuum line.
(12) The apparatus according to Claim 11 wherein the valve means comprises a one way check valve having a sealing member spring biased into an upper closed position and movable downwardly from the closed position under the weight of water resting thereon from the duct to push the sealing member into an open position.
(13) The apparatus according to Claim 11 wherein the duct includes venturi means arranged to generate a vacuum in said duct at said first opening means in response to water flowing through the duct toward said second opening means.
(14) The apparatus according to Claim 13 wherein the duct includes an inner tube, an outer tube, said inner tube being mounted within the outer tube and defining a space therebetween, said first opening means being provided in the outer tube, said venturi means being arranged at a lower end of the inner tube arranged to draw air from the space on the flow of water through the venturi means from the inner tube, said venturi means being arranged such that in the absence of water flow through the inner tube, air is drawn through said opening and in a reverse direction through said venturi into said inner tube to said vacuum line.
(7) The system according to Claim wherein the vacuum line includes a check valve therein.
(8) The system according to Claim wherein the vacuum line includes a check valve therein located in the line at a height above an upper level of the water in the container.
(9) The system according to Claim wherein the container comprises a tub into which one or more persons can enter for bathing.
(10) The system according to Claim wherein the container comprises a tub into which one or more persons can enter for bathing, and wherein the vacuum line is connected to a manually operable air inlet valve mounted on a side wall of the tub, the check valve being located adjacent the air inlet valve.
(11) An electrical apparatus comprising a cabinet, at least one electrical component mounted within the cabinet, a duct, a first opening means provided in the duct and connecting the duct to the interior of the cabinet, a second opening means in the duct positioned below the first opening means and extending from the duct to an exterior location of the cabinet, valve means in the duct normally closing the second opening means and responsive to the presence of liquid through the second opening means within the duct to release the liquid to the exterior of the cabinet and a third opening means communicating from the duct for connection to a vacuum line.
(12) The apparatus according to Claim 11 wherein the valve means comprises a one way check valve having a sealing member spring biased into an upper closed position and movable downwardly from the closed position under the weight of water resting thereon from the duct to push the sealing member into an open position.
(13) The apparatus according to Claim 11 wherein the duct includes venturi means arranged to generate a vacuum in said duct at said first opening means in response to water flowing through the duct toward said second opening means.
(14) The apparatus according to Claim 13 wherein the duct includes an inner tube, an outer tube, said inner tube being mounted within the outer tube and defining a space therebetween, said first opening means being provided in the outer tube, said venturi means being arranged at a lower end of the inner tube arranged to draw air from the space on the flow of water through the venturi means from the inner tube, said venturi means being arranged such that in the absence of water flow through the inner tube, air is drawn through said opening and in a reverse direction through said venturi into said inner tube to said vacuum line.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US55970690A | 1990-07-30 | 1990-07-30 | |
| US559,706 | 1990-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2048109A1 true CA2048109A1 (en) | 1992-01-31 |
Family
ID=24234684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2048109 Abandoned CA2048109A1 (en) | 1990-07-30 | 1991-07-30 | Anti-flooding bypass for an electrical cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2048109A1 (en) |
-
1991
- 1991-07-30 CA CA 2048109 patent/CA2048109A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |