CA2041812A1 - Syphoning device - Google Patents
Syphoning deviceInfo
- Publication number
- CA2041812A1 CA2041812A1 CA 2041812 CA2041812A CA2041812A1 CA 2041812 A1 CA2041812 A1 CA 2041812A1 CA 2041812 CA2041812 CA 2041812 CA 2041812 A CA2041812 A CA 2041812A CA 2041812 A1 CA2041812 A1 CA 2041812A1
- Authority
- CA
- Canada
- Prior art keywords
- syphon
- liquid
- outlet
- level
- inlet
- 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
Abstract
ABSTRACT OF THE DISCLOSURE
A syphoning device is disclosed which is characterized by means for inhibiting the entrance of air into the syphon even after the flow of liquid through the syphon has stopped. Once the syphon has been initially primed with liquid, it remains primed so that the flow of liquid may restart automatically when the level of liquid on the inlet side of the syphon rises.
A syphoning device is disclosed which is characterized by means for inhibiting the entrance of air into the syphon even after the flow of liquid through the syphon has stopped. Once the syphon has been initially primed with liquid, it remains primed so that the flow of liquid may restart automatically when the level of liquid on the inlet side of the syphon rises.
Description
2~8~ ~
This invention relates generally to devices used for draining liquids from a container by syphoning action, and commonly referred to as a syphon.
It is well known in the art that liquids may be transferred from one container to another, or simply drained from a container, by syphoning action. One of the main advantages of a syphon is that once it is set up, the syphon requires no power to operate because it is essentially gravity and pressure driven. In addition, the simplicity of a syphon renders its construction and implementation possible even to those with few resources or moderate skill.
However, while syphons are commonly employed to simply transfer liquids, there has been provided no means by which a syphon may be used for automatically controlling the level of a liquid in a container. In general, conventional syphons are set up, primed, and then allowed to run until they are stopped by manual intervention, or air enters the syphon as the level of liquid drops below the inlet. In this respect, the syphon is generally used as a once-off device. In other words, the syphon is not intended to serve as a permanent or even semi-permanent installation. Rather, it is set up, primed, and then allowed to run until it loses its prime. Further operation requires that the syphon be reprimed. It is largely for these reasons that syphons have been prevented from serving as fluid level control devices, or to provide automatic drainage and perhaps other uses.
It is therefore an object of the invention to provide a syphoning device which, after being set up and ~- primed, will permit liquid to be drained from a container or reservoir such that the level of liquid in the container is brought down to a predetermined level. When the level of the liquid reaches the predetermined level, the syphoning action stops. Thereafter, the syphoning device remains primed such that when the level of liquid rises, syphoning action restarts automatically.
It is another object of the invention to provide a syphoning device which remains primed after the flow of liquid stops and which also retains the essential simplicity of the conventional syphon.
The syphoning device of the in~ention comprises a tubular structure comprising at least two downwardly extending branches connected at their upper extent by a substantially horizontal section. An inlet branch extends down the interior of the container or reservoir and is at least partially emersed in the liquid contained therein which is to be at least partially drained from the container. The inlet branch comprises an inlet trapping means, which inhibits entry of air into the inlet branch, even after syphoning stops. ~n outlet branch extends down the exterior of the container to at least the level to which the liquid in the container is to be drained, and includes outlet trapping means to inhibit entry of air into the outlet branch. Both inlet and outlet trapping means operate by ensuring that the bottom of the respective branch remains flooded with liquid even after syphoning action stops.
By using the syphoning device of the present invention, liquid comprised within a container or reservoir may be at least partially drained by syphoning action. The syphoning action stops automatically when the level of the liquid in the container is lowered to a predetermined level, and thereafter the syphon remains primed to permit the syphoning action to restart automatically when the level of liquid in the container rises.
Further objects, features and advantages of the invention will become more apparent from the following detailed description when considered with reference to the appended drawings, wherein:
2 ~ C.'3~
- `~
Figure 1 schematically illustrates a first embodiment of the invention;
Figure 2 schematically illustrates a second embodiment of the invention; and Figure 3 schematically illustrates a third embodiment of the invention.
According to the present invention a syphoning device, including a syphon, said device comprises means for inhibiting the entrance of air into the syphon before and after th~ flow has stopped, said device being so structured and dimensioned that after initial priming of the syphon with liquid it remains primed so that the flow of liquid may restart automatically when the level of liquid on the inlet side of the syphon rises to the required level.
Fiyure 1 shows a vertical elevation view of a first embodiment of the invention, located in a position for draining liquid 8 from a container 7 (shown in partial cross-section). The syphoning device may be secured in place by suitable mounting means (not shown). The syphoning device comprises an inlet branch 1, and an outlet branch 2, connected by a substantially horizontal connecting member 3. The open end of the inlet branch 1 terminates in an inlet 5 which may be adapted to facilitate an advantageous flow of liquid into the inlet 5. The outlet branch 2 comprises a trap 4 which consists generally of a U-shaped member which is sealably connected to the open end o~ the outlet branch 2, and extends back upwards to the outlet 6 located at the level indicated as L2. It may be noted that the inlet trapping means, referred to above, is provided in this embodiment by the fact that the inlet 5 is located at a lower level than the outlet 6 which ensures that the inlet 5 will always be flooded with liquid.
It is a well known principle of syphon operation that when a syphon is fixed in place with its inlet emersed in a liquid contained in a container, and the syphon primed 2, .~
-(i.e. filled with liquid), the liquid will flow out of the container through the syphon for as long as the level of liquid in the container i5 above that of the outlet of the syphon. Thus in this example, the liquid 8 may be initially at a high level Ll, and after the syphon primed to start the flow, the liquid will drain from the container 7 until the level drops to level L2 whi~h corresponds to the height of the outlet 6. When the level of the liquid 8 drops to L2, the flow stops. However, it can be seen from Figure 1 that in spite of the fact that the flow has stopped, the inlet 5 is still flooded with liquid 8 (thereby forming the inlet trapping means described above), so air will not enter the inlet branch 1. In addition, the trap 4 will still be flooded with liquid, thereby preventing entry of air into the outlet branch 2. By this means, air is prevented from entering the syphon device, and thus the device remains primed after the flow has stopped.
Figure 2 shows a vertical elevation view of a second embodiment of the invention. It will be seen that it~ms having the same function and description as in Figure 1, are denoted by the same labels, and their detailed descriptions omitted. In this example, the syphon is employed to drain liquid 8 from a container 7, over an obstacle 10 (shown partially and in section)O In addition, it is desired that the container 7 be completely drained, rather than only partially as in the example illustrated in Figure 1. In this case, the inlet trapping means is provided by a trap 9, which is similar in form to the outlet trap 4. The outlet 6 is arranged such that it is located below the inlet 5 (and thus the floor of the container 7), hut is above either of the traps 4 or 9.
Thus when the liquid 8 drains under syphoning action from the container 7 its level will drop to the height of the outlet 6, and will therefore be below the floor of the container 7, thus completely draining the container 7.
However, by arranging that the outlet 6 is above the traps 4 and 9, both of the traps 4 and 9 remain ~looded, and the syphon will remain primed.
Figure 3 illustrates a third embodiment of the invention wherein the syphoning device has been adapted to remove rainwater or snow-melt from the top of a flexible cover 12 suspended between the walls 11 of an above ground pool or reservoir. In this case the inlet branch 1 comprises a long flexible pipe la which permits the inlet 5 to be placed at a convenient location, such as at the low point of the flexible cover, ~here the water naturally collectsO Once again, the outlet 6 is located at an appropriate height such that water collecting on the flexible cover 12 will be drained until the level of the water in the cover 12 just covers the inlet 5, thersby maintaining the inlet trap and keeping the syphon primed.
; It will be readily apparent to those skilled in the art that there are many ways by which the present invention may be varied. For example, either or both of 2~ the inlet and outlet branches may be made flexible as required.
In addition, suitable mounting or other arrangements may be made such that the height of the outlet is adapted to be fixably adjustable, and thus the outlet may be used as a means to automatically control the level of the liquid in the container. In this case, it may be desired to provide an automatic means for maintaining a desired liquid level in a container or reservoir. Liquid may be fed into the reservoir either continuously or intermittently, and the syphoning device would act to remove any excess accumulation of liquid. By mounting the outlet such that its height may be adjusted, the syphoning device may also be used to vary the desired liquid level in the container.
As a further variation, a valve may be installed 90 that syphoning action only takes place when desired.
;
2 ~
This valve might be installed in combination with means for initially priming the syphon. Such priming means may, for instance, comprise end plugs adapted to inlet 5 and outlet 6, and a filler port at the high point in the syphoning system.
As a still further variation, an extension may be adapted to the outlet 6 for draining the liquid to a convenient location which is below the level of the outlet 6. In order that the operation of the syphon of the invention is not disturbed by the presence of this extension, suitable venting means, such as a vacuum-breaker, might be employed to ensure that the pressure at the outlet 6 never drops below ambient atmospheric pressure, and therefore that the syphoning action remains governed by the height of the outlet 6 rather than the height of the outlet of the extension.
Thus it will be seen that there exist many alternative embodiments of the present invention, all of which may properly be considered as falling within the spirit the scope and the essence of the present invention.
This invention relates generally to devices used for draining liquids from a container by syphoning action, and commonly referred to as a syphon.
It is well known in the art that liquids may be transferred from one container to another, or simply drained from a container, by syphoning action. One of the main advantages of a syphon is that once it is set up, the syphon requires no power to operate because it is essentially gravity and pressure driven. In addition, the simplicity of a syphon renders its construction and implementation possible even to those with few resources or moderate skill.
However, while syphons are commonly employed to simply transfer liquids, there has been provided no means by which a syphon may be used for automatically controlling the level of a liquid in a container. In general, conventional syphons are set up, primed, and then allowed to run until they are stopped by manual intervention, or air enters the syphon as the level of liquid drops below the inlet. In this respect, the syphon is generally used as a once-off device. In other words, the syphon is not intended to serve as a permanent or even semi-permanent installation. Rather, it is set up, primed, and then allowed to run until it loses its prime. Further operation requires that the syphon be reprimed. It is largely for these reasons that syphons have been prevented from serving as fluid level control devices, or to provide automatic drainage and perhaps other uses.
It is therefore an object of the invention to provide a syphoning device which, after being set up and ~- primed, will permit liquid to be drained from a container or reservoir such that the level of liquid in the container is brought down to a predetermined level. When the level of the liquid reaches the predetermined level, the syphoning action stops. Thereafter, the syphoning device remains primed such that when the level of liquid rises, syphoning action restarts automatically.
It is another object of the invention to provide a syphoning device which remains primed after the flow of liquid stops and which also retains the essential simplicity of the conventional syphon.
The syphoning device of the in~ention comprises a tubular structure comprising at least two downwardly extending branches connected at their upper extent by a substantially horizontal section. An inlet branch extends down the interior of the container or reservoir and is at least partially emersed in the liquid contained therein which is to be at least partially drained from the container. The inlet branch comprises an inlet trapping means, which inhibits entry of air into the inlet branch, even after syphoning stops. ~n outlet branch extends down the exterior of the container to at least the level to which the liquid in the container is to be drained, and includes outlet trapping means to inhibit entry of air into the outlet branch. Both inlet and outlet trapping means operate by ensuring that the bottom of the respective branch remains flooded with liquid even after syphoning action stops.
By using the syphoning device of the present invention, liquid comprised within a container or reservoir may be at least partially drained by syphoning action. The syphoning action stops automatically when the level of the liquid in the container is lowered to a predetermined level, and thereafter the syphon remains primed to permit the syphoning action to restart automatically when the level of liquid in the container rises.
Further objects, features and advantages of the invention will become more apparent from the following detailed description when considered with reference to the appended drawings, wherein:
2 ~ C.'3~
- `~
Figure 1 schematically illustrates a first embodiment of the invention;
Figure 2 schematically illustrates a second embodiment of the invention; and Figure 3 schematically illustrates a third embodiment of the invention.
According to the present invention a syphoning device, including a syphon, said device comprises means for inhibiting the entrance of air into the syphon before and after th~ flow has stopped, said device being so structured and dimensioned that after initial priming of the syphon with liquid it remains primed so that the flow of liquid may restart automatically when the level of liquid on the inlet side of the syphon rises to the required level.
Fiyure 1 shows a vertical elevation view of a first embodiment of the invention, located in a position for draining liquid 8 from a container 7 (shown in partial cross-section). The syphoning device may be secured in place by suitable mounting means (not shown). The syphoning device comprises an inlet branch 1, and an outlet branch 2, connected by a substantially horizontal connecting member 3. The open end of the inlet branch 1 terminates in an inlet 5 which may be adapted to facilitate an advantageous flow of liquid into the inlet 5. The outlet branch 2 comprises a trap 4 which consists generally of a U-shaped member which is sealably connected to the open end o~ the outlet branch 2, and extends back upwards to the outlet 6 located at the level indicated as L2. It may be noted that the inlet trapping means, referred to above, is provided in this embodiment by the fact that the inlet 5 is located at a lower level than the outlet 6 which ensures that the inlet 5 will always be flooded with liquid.
It is a well known principle of syphon operation that when a syphon is fixed in place with its inlet emersed in a liquid contained in a container, and the syphon primed 2, .~
-(i.e. filled with liquid), the liquid will flow out of the container through the syphon for as long as the level of liquid in the container i5 above that of the outlet of the syphon. Thus in this example, the liquid 8 may be initially at a high level Ll, and after the syphon primed to start the flow, the liquid will drain from the container 7 until the level drops to level L2 whi~h corresponds to the height of the outlet 6. When the level of the liquid 8 drops to L2, the flow stops. However, it can be seen from Figure 1 that in spite of the fact that the flow has stopped, the inlet 5 is still flooded with liquid 8 (thereby forming the inlet trapping means described above), so air will not enter the inlet branch 1. In addition, the trap 4 will still be flooded with liquid, thereby preventing entry of air into the outlet branch 2. By this means, air is prevented from entering the syphon device, and thus the device remains primed after the flow has stopped.
Figure 2 shows a vertical elevation view of a second embodiment of the invention. It will be seen that it~ms having the same function and description as in Figure 1, are denoted by the same labels, and their detailed descriptions omitted. In this example, the syphon is employed to drain liquid 8 from a container 7, over an obstacle 10 (shown partially and in section)O In addition, it is desired that the container 7 be completely drained, rather than only partially as in the example illustrated in Figure 1. In this case, the inlet trapping means is provided by a trap 9, which is similar in form to the outlet trap 4. The outlet 6 is arranged such that it is located below the inlet 5 (and thus the floor of the container 7), hut is above either of the traps 4 or 9.
Thus when the liquid 8 drains under syphoning action from the container 7 its level will drop to the height of the outlet 6, and will therefore be below the floor of the container 7, thus completely draining the container 7.
However, by arranging that the outlet 6 is above the traps 4 and 9, both of the traps 4 and 9 remain ~looded, and the syphon will remain primed.
Figure 3 illustrates a third embodiment of the invention wherein the syphoning device has been adapted to remove rainwater or snow-melt from the top of a flexible cover 12 suspended between the walls 11 of an above ground pool or reservoir. In this case the inlet branch 1 comprises a long flexible pipe la which permits the inlet 5 to be placed at a convenient location, such as at the low point of the flexible cover, ~here the water naturally collectsO Once again, the outlet 6 is located at an appropriate height such that water collecting on the flexible cover 12 will be drained until the level of the water in the cover 12 just covers the inlet 5, thersby maintaining the inlet trap and keeping the syphon primed.
; It will be readily apparent to those skilled in the art that there are many ways by which the present invention may be varied. For example, either or both of 2~ the inlet and outlet branches may be made flexible as required.
In addition, suitable mounting or other arrangements may be made such that the height of the outlet is adapted to be fixably adjustable, and thus the outlet may be used as a means to automatically control the level of the liquid in the container. In this case, it may be desired to provide an automatic means for maintaining a desired liquid level in a container or reservoir. Liquid may be fed into the reservoir either continuously or intermittently, and the syphoning device would act to remove any excess accumulation of liquid. By mounting the outlet such that its height may be adjusted, the syphoning device may also be used to vary the desired liquid level in the container.
As a further variation, a valve may be installed 90 that syphoning action only takes place when desired.
;
2 ~
This valve might be installed in combination with means for initially priming the syphon. Such priming means may, for instance, comprise end plugs adapted to inlet 5 and outlet 6, and a filler port at the high point in the syphoning system.
As a still further variation, an extension may be adapted to the outlet 6 for draining the liquid to a convenient location which is below the level of the outlet 6. In order that the operation of the syphon of the invention is not disturbed by the presence of this extension, suitable venting means, such as a vacuum-breaker, might be employed to ensure that the pressure at the outlet 6 never drops below ambient atmospheric pressure, and therefore that the syphoning action remains governed by the height of the outlet 6 rather than the height of the outlet of the extension.
Thus it will be seen that there exist many alternative embodiments of the present invention, all of which may properly be considered as falling within the spirit the scope and the essence of the present invention.
Claims (14)
1. A syphoning device, including a syphon, said device comprising means for inhibiting the entrance of air into the syphon before and after the flow has stopped, said device being so structured and dimensioned that after initial priming of the syphon with liquid it remains primed so that the flow of liquid may restart automatically when the level of liquid on the inlet side of the syphon rises to the required level.
2. A syphoning assembly comprising two downwardly extending branches connected at their generally upper extremity by a substantially horizontal central portion, so as to define a syphon whereby a liquid comprised within at least one container or reservoir may be at least partially drained by syphoning action, such that said syphoning action stops automatically when the level of liquid in the container is lowered to a predetermined level, and such that the syphon remains primed to permit the syphoning action to restart automatically when the level of liquid in the container rises, said syphon further comprising:
(a) at least one inlet branch extending generally downward from said central portion and terminating in an inlet which is adapted to promote a flow of liquid therein, said inlet branch further comprising inlet trapping means, for ensuring that the bottom of each inlet branch remains flooded with liquid after syphoning action stops thereby inhibiting entry of air into the syphon through an inlet branch; and (b) at least one outlet branch extending generally downward from said central portion and terminating in an outlet which is adapted to promote a flow of liquid therefrom, said outlet branch further comprising outlet trapping means, for ensuring that the bottom of each outlet branch remains flooded with liquid after syphoning action stops, thereby inhibiting entry of air into the syphon through an outlet branch.
(a) at least one inlet branch extending generally downward from said central portion and terminating in an inlet which is adapted to promote a flow of liquid therein, said inlet branch further comprising inlet trapping means, for ensuring that the bottom of each inlet branch remains flooded with liquid after syphoning action stops thereby inhibiting entry of air into the syphon through an inlet branch; and (b) at least one outlet branch extending generally downward from said central portion and terminating in an outlet which is adapted to promote a flow of liquid therefrom, said outlet branch further comprising outlet trapping means, for ensuring that the bottom of each outlet branch remains flooded with liquid after syphoning action stops, thereby inhibiting entry of air into the syphon through an outlet branch.
3. A syphon as claimed in claim 2, wherein the height of said outlet determines the level to which the liquid in the respective container will be lowered by syphoning action.
4. A syphon as claimed in claim 2, wherein said inlet trapping means maintains the inlet at a height below that of the desired level to which the liquid in the container is to be drained.
5. A syphon as claimed in claim 2, wherein said inlet trapping means comprises a generally U-shaped tubular member one end of which is sealably connected to the bottom of a respective inlet branch, and whereby the other end extends upwardly to the inlet situated at a height which is equal to or lower than the desired level to which the liquid in the container is to be drained.
6. A syphon as claimed in claim 2, wherein said inlet trapping means comprises a generally U-shaped tubular member one end of which is sealably adapted to the bottom of a respective inlet branch, and wherein the other end extends upwardly to a level at which it sealably joins with the bottom of the container to thereby form the inlet, such that the container may be drained of liquid.
7. A syphon as claimed in claim 1, wherein said outlet includes coupling means adapted to accept an extension for conducting the flow of liquid from the outlet to a predetermined location.
8. A syphoning device for automatically controlling the level of liquid in a container by syphoning action such that said syphoning action stops automatically when the level of the liquid in the container is lowered to a predetermined level, and such that the syphon remains primed to permit the syphoning action to restart automatically when the level of liquid in the container rises, said syphon comprising:
(a) at least one inlet branch extending generally downwards and comprising an inlet mounted at a level which is substantially below the lowest level to which the liquid in the container is to be controlled; and (b) an outlet branch extending generally downwards and comprising an outlet mounted at a level which corresponds to the lowest level to which the liquid in the container is to be controlled, said outlet branch further comprising outlet trapping means for ensuring that the bottom of the outlet branch remains flooded with liquid after syphoning action stops so as to inhibit entry of air into the syphon through the outlet branch.
(a) at least one inlet branch extending generally downwards and comprising an inlet mounted at a level which is substantially below the lowest level to which the liquid in the container is to be controlled; and (b) an outlet branch extending generally downwards and comprising an outlet mounted at a level which corresponds to the lowest level to which the liquid in the container is to be controlled, said outlet branch further comprising outlet trapping means for ensuring that the bottom of the outlet branch remains flooded with liquid after syphoning action stops so as to inhibit entry of air into the syphon through the outlet branch.
9. A syphoning device as claimed in claim 8, further including adjusting means for fixably adjusting the height of the outlet of the syphon, such that the desired level to which the liquid in the container is to be controlled may be adjusted.
10. A syphon as claimed in either of claims 1, 2 or 8, wherein said outlet trapping means comprises a generally U-shaped tubular member one end of which is sealably adapted to the bottom of the respective outlet branch, and the other end extends upwardly to the outlet located at a height which corresponds to the desired level to which the liquid in the container is to be lowered.
11. A syphon as claimed in either of claims 1, 2 or 8, further comprising a control valve for ensuring that syphoning action occurs only when desired.
12. A syphon as claimed in either of claims 1, 2 or 8, further comprising sealing means adapted to each of the inlet and outlet and filling means closably adapted to the high point of the syphon so as to facilitate priming the syphon.
13. A syphon as claimed in claim 8, wherein said outlet comprises coupling means adapted to accept an extension for conducting the flow of liquid from the outlet to a convenient location.
14. A syphon as claimed in claim 7, wherein said outlet further comprises venting means for ensuring that the pressure at the outlet is at least equal to ambient atmospheric pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2041812 CA2041812A1 (en) | 1991-05-03 | 1991-05-03 | Syphoning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2041812 CA2041812A1 (en) | 1991-05-03 | 1991-05-03 | Syphoning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2041812A1 true CA2041812A1 (en) | 1992-11-04 |
Family
ID=4147538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2041812 Abandoned CA2041812A1 (en) | 1991-05-03 | 1991-05-03 | Syphoning device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2041812A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114906793A (en) * | 2022-06-06 | 2022-08-16 | 中北大学 | Automatic quantitative filling device based on isotope detector and siphon principle |
-
1991
- 1991-05-03 CA CA 2041812 patent/CA2041812A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114906793A (en) * | 2022-06-06 | 2022-08-16 | 中北大学 | Automatic quantitative filling device based on isotope detector and siphon principle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |