GB2442963A - Means for introducing an antifreeze substance into a water supply system - Google Patents

Means for introducing an antifreeze substance into a water supply system Download PDF

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Publication number
GB2442963A
GB2442963A GB0620802A GB0620802A GB2442963A GB 2442963 A GB2442963 A GB 2442963A GB 0620802 A GB0620802 A GB 0620802A GB 0620802 A GB0620802 A GB 0620802A GB 2442963 A GB2442963 A GB 2442963A
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GB
United Kingdom
Prior art keywords
water supply
supply system
water
freeze
freeze substance
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.)
Withdrawn
Application number
GB0620802A
Other versions
GB0620802D0 (en
Inventor
Daniel Sedgwick
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB0620802A priority Critical patent/GB2442963A/en
Publication of GB0620802D0 publication Critical patent/GB0620802D0/en
Priority to GB0701249.5A priority patent/GB2445946B/en
Priority to PCT/GB2007/004020 priority patent/WO2008047147A1/en
Publication of GB2442963A publication Critical patent/GB2442963A/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/09—Component parts or accessories
    • E03B7/10—Devices preventing bursting of pipes by freezing
    • E03B7/12—Devices preventing bursting of pipes by freezing by preventing freezing

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)

Abstract

A water supply system 8 having means 10 for introducing an anti-freeze substance 20 into the system 8 in response to flow of water through the system 8. The system is suitably mounted in temporary accommodation e.g. a recreational vehicle.

Description

1 2442963 Title: Improvements in or relating to water supply systems
The present invention relates to an improvement in water supply systems, particularly, but not exclusively to water supply systems in temporary accommodation, such as cabins, static and dynamic caravans, boats and recreational vehicles and homes.
There has been a growing trend in the use of recreational vehicles and homes. Many recreational vehicles and homes are connected to site facilities to * * S supply the homes and vehicles with power and water. Referring to Figure 1, an example of a water supply system 1 found in recreational vehicles and homes is: shown. Water is supplied from the mains via a pipe 2 and valve 3. The water **** supply I is split into two to supply cold water for drinking via tap 4 and to supply * S...
water for a boiler 4 to produce hot water. Electricity is used to provide power for * ** a heating element of the boiler 4. Hot water is generally provided on demand, wherein the boiler 4 detects a flow of water in the system when a hot water tap 6 is opened, this action switches on the heating element to heat up the water. As shown in Figure 1, the water supply systems of recreational vehicles and homes are similar to an open water supply system found in permanent buildings. The term open water supply system means a non-circulation or a non-loop system.
Recreational vehicles and homes are often used during the spring and summer seasons when there are extended periods of good weather and daylight.
However, during the winter season, recreational vehicles and homes are less frequently used. During cold weather, pipes can burst due to formation of ice in them particularly when there is no water flow due to lack of use. In such circumstances, the cost of repairing the pipe work and its components can be expensive.
It is an object of the invention to provide a water supply arrangement that aims to alleviate the above-mentioned problems of existing water supply systems. S.
According to a first aspect of the present invention there is provided a S...
water supply system having means for introducing an anti-freeze substance into the system in response to flow of water through the system.
* .* 5....DTD: 15.. : Preferably the system further comprises a double check valve or non-return valve positioned between the introducing means and a water source. The double check valve or non-return valve prevents the anti-freeze substance contaminating the water source.
Preferably the introducing means is operated by the flow of water, which in use draws the anti-freeze substance into the system. Preferably the introducing means is operated by creating a pressure differential between the water flow and the anti-freeze substance. Preferably the introducing means is a variable introducing means adapted to vary the amount of anti-freeze substance to be drawn into the system.
Preferably a bypass is provided to bypass the introducing means when the anti-freeze substance is not required. Preferably a valve is further provided to prevent water flow operating the introducing means when the anti-freeze substance is not required. Preferably a valve is provided to close the bypass when the anti-freeze substance is required. *
Alternatively, a valve is provided between the introducing means and an * anti-freeze source. The valve prevents the introducing means from drawing the anti-freeze substance into the system when the anti-freeze substance is not * required. **
Alternatively, the introducing means can be switched off when the anti-freeze substance is not required.
Preferably the introducing means is a hydrodynamic pump. Preferably, the introducing means is a venturi pump. Alternatively, the introducing means is a turbine.
S
Preferably the anti-freeze substance contains a colorant. Preferably the colorant is of a food-grade type. Preferably the anti-freeze substance is biodegradable. Preferably the anti-freeze substance is of a food-grade type.
Preferably the anti-freeze substance contains anti-corrosion inhibitors. Preferably the anti-freeze substance contains anti-algae inhibitors. Preferably the anti-freeze substance is propylene glycol.
Preferably the system comprises hot and cold water supply arrangements.
Preferably the water source is a main water supply. Alternatively, the. :* * * water source system is from a portable water container or cartridge. . * * S.....
According to a second aspect of the present invention there is provided a **5* water supply system for a recreational or temporary accommodation comprising S...
means for introducing an anti-freeze substance into the system in response to flow ** of water through the system.
Preferably the recreational or temporary accommodation is a house or vehicle. Preferably the house is a cabin. Preferably the vehicle is a static or dynamic caravan.
According to a third aspect of the present invention there is provided a method of introducing an anti-freeze substance in a water supply system
I
comprising means for introducing said anti-freeze substance into the supply in response to flow of water through the system.
Preferably the system comprises hot and cold water supply arrangements.
Preferably each of the hot and cold water supply arrangements comprises a tap at its terminal end.
Preferably the method further comprises opening the taps, allowing the flow of water to operate the introducing means to draw the anti-freeze substance * * into the system, allowing the water to flow until the colorant of the anti-freeze * substance is visible in the outflow from the taps and turning off the taps. : **. *
Preferably the anti-freeze substance can be removed from the water supply * ** system by bypassing the introducing means, turning on the taps and allowing water to flow and turning off the taps when the colorant of the anti-freeze substance disappears from the outflow of the taps.
Alternatively, the anti-freeze substance can be removed from the system by closing a valve positioned between the introducing means and an anti-freeze source, turning on the taps and allowing water to flow and turning off the taps when the colorant of the anti-freeze substance disappears from the outflow of the taps.
Alternatively, the anti-freeze substance can be removed from the water supply system by stopping the introducing means, turning on the taps and allowing hot and cold water to continually flow and turning off the taps when the colorant of the anti-freeze substance disappears from the outflow of the taps.
An embodiment of this invention will now be further described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 shows an example of a conventional water supply system; Figure 2 shows a water supply system according to the present invention; * S Figure 3 shows an internal view of a first embodiment of an apparatus according to the present invention; *5*S Figure 4 shows an internal view of the first embodiment of the apparatus *.* in its first mode of operation according to the present invention; *5** Figure 5 shows an internal view of the first embodiment of the apparatus in its second mode of operation according to the present invention; Figure 6 shows an internal view of a second embodiment of the apparatus according to the present invention; and Figure 7 shows an internal view of a third embodiment of the apparatus according to the present invention.
A conventional water supply system has been described above with reference to Figure 1 of the drawings.
S
Referring to Figure 2, a water supply system 8 comprising device 10 having a venturi pump 18 for introducing a propylene glycol substance into the system 8 according to the present invention. The venturi pump 18 is fluidly connected between mains water supply 12 and the system 8, wherein the venturi pump 18 is a fluid operated pump operated by water flow passing through the venturi pump 18. Alternatively, the venturi pump 18 can be fluidly connected to a portable water container or a cartridge. The water supply system 8 is split into two to supply cold water for drinicing via tap 14 and to supply water for a boiler l6toproducehotwater. * * * . * * S.
Referring to Figures 3 to 7, the venturi pump 18 is connected to a * S..
propylene glycol source 20. The propylene glycol is introduced into the system 8 S...
when the venturi pump 18 is in operation. The venturi pump 18 is a variable S...
pump, such that the concentration of the propylene glycol can be varied. A double check valve or a non-return valve 22 is connected between the venturi pump 18 and the mains water supply 12 to prevent the propylene glycol from contaminating the mains water supply 12.
Referring to Figures 3 to 5, a first embodiment of the present invention is shown, in which the bypass 24 and the venturi pump 18 are arranged in parallel.
The device 10 further comprises valves 26, 28 connected to the bypass 24 and venturi pump 18 respectively. Referring to Figure 4, the device 10 in its operational mode is shown, in which the valve 26 is closed and the valve 28 is opened to allow water flow to operate the venturi pump 18 and draws the propylene glycol into the system 8. To operate the venturi pump 18, taps 14, 15 must also be opened. The propylene glycol contains a food grade pigment to allow the user to assess whether the water exiting the taps 14, 15 contains the propylene glycol.
When the system 8 remains dormant during winter months, the presence of the propylene glycol prevents the water from solidifying into ice. * .* * S
When the system 8 is required for normal use, the propylene glycol needs * to be flushed out of the system 8. :...:. **** * * S... *5**
Referring to Figure 5, to flush the propylene glycol out of the system 8, the valve 28 must be closed and the valve 26 and taps 14 and 15 must be opened to allow water flow to bypass the venturi pump 18 and rendering the venturi pump 18 inoperative. Because the propylene glycol contains the food grade pigment, the user can to assess whether the propylene glycol is flushed out of the system 8.
In another embodiment (not shown), the bypass 24 can be insulated.
Referring to Figure 6, a second embodiment of the present invention is shown, in which the venturi pump 18 is a switchable pump. To introduce the propylene glycol into the system 8, the venturi pump 18 and taps 14, 15 are turned on to allow water flow to operate the venturi pump 18. The pigment from the propylene glycol exiting the taps 14, 15 indicates that the propylene glycol is present in the system 8.
To flush the propylene glycol out of the system 8, the venturi pump 18 is switched off and the taps 14, 15 are turned on. The absence of the pigment from the outflow of the taps 14, 15 indicates that the propylene glycol is flushed out of the system 8.
Referring to Figure 7, a third embodiment of the present invention is * shown, in which a valve 30 is provided to restrict the supply of the propylene glycol into the system 8. To introduce the propylene glycol into the system 8, the valve 30 and taps 14, 15 are turned on. The pigment from the propylene glycol exiting the taps 14, 15 indicates that the propylene glycol is present in the system *.*. 8.
To flush the propylene glycol substance 20 out of the system 8, the valve is turned off and the taps are turned on. The absence of the pigment from the outflow of the taps 14, 15 indicates that the propylene glycol is flushed out of the system 8.
The propylene glycol contains anti-algae and anti-corrosion inhibitors to prevent the formation of algae and corrosion in the system 8. The propylene glycol is of a food grade type.
The venturi pump 18 is a pump adapted to vary the concentration of propylene glycol in the system 8.
Alternatively, a turbine or any other suitable hydrodynamic pump may be used to introduce the propylene glycol into the system 8. * U
S * *5 * S * * S * ** * S
S.....
S S... * S a... **.. * S S... S...
S SS 0. 5

Claims (50)

  1. S
    Claims 1. A water supply system having means for introducing an anti-freeze substance into the system in response to flow of water through the system.
  2. 2. A water supply system as claimed in claim 1, wherein a double check valve or non-return valve is provided between the introducing means and a water source.
  3. 3. A water supply system as claimed in claim I or 2, wherein the introducing * means is a fluidly operated introducing means driven by the flow of water, which * in use draws the anti-freeze substance into the system. e..
  4. 4. A water supply system as claimed in any one of claims I to 3, wherein the introducing means is operated by creating a pressure differential between the water flow and the anti-freeze substance.
  5. 5. A water supply system as claimed in any one of claims I to 4, wherein the introducing means is a variable introducing means adapted to vary the amount of anti-freeze substance to be drawn into the system.
    S
  6. 6. A water supply system as claimed in any one of claims 1 to 5, wherein a bypass is provided to bypass the introducing means when the anti-freeze substance is not required.
  7. 7. A water supply system as claimed in claim 6, wherein a valve is provided to prevent water flow operating the introducing means when the anti-freeze substance is not required.
  8. 8. A water supply system as claimed in claim 6 or 7, wherein a valve is provided to close the bypass when the anti-freeze substance is required. * *. * .* * S
  9. 9. A water supply system as claimed in any one of claims I to 5, wherein a I... * *
    valve is provided between the introducing means and an anti-freeze source, in **** which the valve is turned off when the anti-freeze substance is not required. *SSS * II *
  10. 10. A water supply system as claimed in any one of claims 1 to 5, wherein the introducing means is switched off when the anti-freeze substance is not required.
  11. 11. A water supply system as claimed in any one of claims 1 to 10, wherein the introducing means is a hydrodynamic pump.
  12. 12. A water supply system as claimed in claim 11, wherein the hydrodynamic pump is a venturi pump.
  13. 13. A water supply system as claimed in claim 11, wherein the hydrodynamic pump is a turbine.
  14. 14. A water supply system as claimed in any one of claims I to 13, wherein the anti-freeze substance contains a colorant.
  15. 15. A water supply system as claimed in any one of claims 1 to 14, wherein the colorant is of a food-grade type. S. S * S * * *5
  16. 16. A water supply system as claimed in any one of claims 1 to 15, wherein * the anti-freeze substance is biodegradable.
    a..... S... * *5**
  17. 17. A water supply system as claimed in any one of claims 1 to 16, wherein.... S...
    the anti-freeze substance is of a food-grade type. *: :: :
  18. 18. A water supply system as claimed in any one of claims 1 to 17, wherein the anti-freeze substance contains anti-corrosion inhibitors or has anti-corrosion properties.
  19. 19. A water supply system as claimed in any one of claims I to 18, wherein the anti-freeze substance contains anti-algae inhibitors or has anti-algae properties.
  20. 20. A water supply system as claimed in any one of claims 1 to 19, wherein the anti-freeze substance is propylene glycol.
  21. 21. A water supply system as claimed in any one of claims I to 20, wherein the system comprises hot and cold water supply arrangements.
  22. 22. A water supply system as claimed in any one of claims 2 to 21, wherein the water source is a main water supply. S. S * S * S.
  23. 23. A water supply system as claimed in any one of claims 2 to 21, wherein the water source system is from a portable water container or cartridge.
    *.....
    S S... * S...
  24. 24. A recreational or temporary accommodation comprising a water supply. * S...
    system as claimed in any one of claims ito 23.
  25. 25. A recreational or temporary accommodation as claimed in claim 24, wherein the recreational or temporary accommodation is a house or vehicle.
  26. 26. A recreational or temporary accommodation as claimed in claim 25, wherein the house is a cabin.
  27. 27. A recreational or temporary accommodation as claimed in claim 25, wherein the vehicle is a static or dynamic caravan.
  28. 28. A method of introducing an anti-freeze substance in a water supply system comprising means for introducing said anti-freeze substance into the supply in response to flow of water through the system.
  29. 29. A method as claimed in claim 28, wherein the introducing means is a fluidly operated introducing means driven by the flow of water, which in use draws the anti-freeze substance into the system.
    S * S S * S*
  30. 30. A method as claimed in claim 28 or 29, wherein the introducing means is *.
    operated by creating a pressure differential between the water flow and the anti-* ****.* * freezesubstance. ** S... S... * S S...
  31. 31. A method as claimed in any one of claims 28 to 30, wherein the *:.
    introducing means is a variable introducing means adapted to vary the amount of anti-freeze substance to be drawn into the system.
  32. 32. A method as claimed in any one of claims 28 to 31, wherein the anti-freeze substance contains a colorant.
  33. 33. A method as claimed in any one of claims 28 to 32, wherein the colorant is of a food-grade type.
  34. 34. A method as claimed in any one of claims 28 to 33, wherein the anti-freeze substance is biodegradable.
  35. 35. A method as claimed in any one of claims 28 to 34, wherein the anti-freeze substance is of a food-grade type.
  36. 36. A method as claimed in any one of claims 28 to 35, wherein the anti-freeze substance contains anti-corrosion inhibitors or has anti-corrosion properties.
  37. 37. A method as claimed in any one of claims 28 to 36, wherein the anti-freeze substance contains anti-algae inhibitors or has anti- algae properties. * * * *.**
  38. 38. A method as claimed in any one of claims 28 to 37, wherein the system comprises hot and cold water supply arrangements.
  39. 39. A method as claimed in claim 38, wherein each of the hot and cold water supply arrangements comprises a tap at its terminal end.
  40. 40. A method as claimed in claim 39, further comprising the step of opening the taps, allowing the flow of water to operate the introducing means to draw the anti-freeze substance into the system, allowing the water to flow until the colorant
    S
    of the anti-freeze substance is visible in the outflow from the taps and turning off the taps.
  41. 41. A method as claimed in claim 40, wherein the anti-freeze substance is removed from the water supply system by bypassing the introducing means, turning on the taps and allowing water to flow and turning off the taps when the colorant of the anti-freeze substance disappears from the outflow of the taps.
  42. 42. A method as claimed in claim 40, wherein the anti-freeze substance is removed from the system by closing a valve positioned between the introducing *.
    means and an anti-freeze source, turning on the taps and allowing water to flow * S.....
    S
    and turning off the taps when the colorant of the anti-freeze substance disappears....
    from the outflow of the taps. S... *... * S * ** .
  43. 43. A method as claimed in claim 40, wherein the anti-freeze substance can be removed from the water supply system by stopping the introducing means, turning on the taps and allowing hot and cold water to continually flow and turning off the taps when the colorant of the anti-freeze substance disappears from the outflow of the taps.
  44. 44. A method as claimed in any one of claims 28 to 43, wherein the anti-freeze substance is propylene glycol.
  45. 45. A method as claimed in any one of claims 28 to 44, wherein the introducing means is a hydrodynamic pump.
  46. 46. A method as claimed in claim 45, wherein the hydrodynamic pump is a venturi pump.
  47. 47. A method as claimed in claim 45, wherein the hydrodynamic pump is a turbine. S. * * . S * S.
  48. 48. A water supply system substantially as hereinbefore described with * reference to and as illustrated in Figures 2 to 7. . S..... * *5*S
  49. 49. A recreational or temporary accommodation substantially as hereinbefore S...
    described with reference to and as illustrated in Figures 2 to 7. *:
  50. 50. A method substantially as hereinbefore described with reference to and as illustrated in Figures 2 to 7.
GB0620802A 2006-10-20 2006-10-20 Means for introducing an antifreeze substance into a water supply system Withdrawn GB2442963A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB0620802A GB2442963A (en) 2006-10-20 2006-10-20 Means for introducing an antifreeze substance into a water supply system
GB0701249.5A GB2445946B (en) 2006-10-20 2007-01-23 Improvements in or relating to water supply systems
PCT/GB2007/004020 WO2008047147A1 (en) 2006-10-20 2007-10-22 Improvements in or relating to water supply systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0620802A GB2442963A (en) 2006-10-20 2006-10-20 Means for introducing an antifreeze substance into a water supply system

Publications (2)

Publication Number Publication Date
GB0620802D0 GB0620802D0 (en) 2006-11-29
GB2442963A true GB2442963A (en) 2008-04-23

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GB0620802A Withdrawn GB2442963A (en) 2006-10-20 2006-10-20 Means for introducing an antifreeze substance into a water supply system
GB0701249.5A Expired - Fee Related GB2445946B (en) 2006-10-20 2007-01-23 Improvements in or relating to water supply systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB0701249.5A Expired - Fee Related GB2445946B (en) 2006-10-20 2007-01-23 Improvements in or relating to water supply systems

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110158698A (en) * 2019-06-20 2019-08-23 安徽工业大学 A kind of face-off bidirectional booster ecology drinking-water system and application method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929154A (en) * 1974-07-29 1975-12-30 Frank E Goodwin Freeze protection apparatus
US5488968A (en) * 1995-05-23 1996-02-06 Price; John R. Fluidizing system and method
US5538031A (en) * 1995-12-26 1996-07-23 Brence; Shelby J. Recreational vehicle winterizing device
GB2355655A (en) * 1999-10-29 2001-05-02 Goeran Sundholm Supplying water to firefighting installations
US6237620B1 (en) * 1999-12-06 2001-05-29 Patrick B. Ferguson Conduit for pressurizing plumbing systems and supplying zantifree plumbing systems
US20040206394A1 (en) * 2003-04-21 2004-10-21 Swan John David Automatic freeze protection system for domestic plumbing systems

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4286617A (en) * 1979-02-08 1981-09-01 John Swan Water system freeze protection apparatus
US4298021A (en) * 1979-12-12 1981-11-03 Bozeman Milton R Winterizing apparatus for recreational vehicles, vacation homes and the like
US4531538A (en) * 1984-01-06 1985-07-30 Sandt David K Water supply winterizing system
US5676182A (en) * 1996-03-22 1997-10-14 Mcmullen, Jr.; George Wayne Portable apparatus and method for winterizing of seasonal dwellings
US5830380A (en) * 1997-07-18 1998-11-03 Camco Manufacturing, Inc. Methyl salicylate antifreeze solution method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929154A (en) * 1974-07-29 1975-12-30 Frank E Goodwin Freeze protection apparatus
US5488968A (en) * 1995-05-23 1996-02-06 Price; John R. Fluidizing system and method
US5538031A (en) * 1995-12-26 1996-07-23 Brence; Shelby J. Recreational vehicle winterizing device
GB2355655A (en) * 1999-10-29 2001-05-02 Goeran Sundholm Supplying water to firefighting installations
US6237620B1 (en) * 1999-12-06 2001-05-29 Patrick B. Ferguson Conduit for pressurizing plumbing systems and supplying zantifree plumbing systems
US20040206394A1 (en) * 2003-04-21 2004-10-21 Swan John David Automatic freeze protection system for domestic plumbing systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110158698A (en) * 2019-06-20 2019-08-23 安徽工业大学 A kind of face-off bidirectional booster ecology drinking-water system and application method

Also Published As

Publication number Publication date
GB2445946A (en) 2008-07-30
GB0701249D0 (en) 2007-02-28
GB2445946B (en) 2012-01-04
GB0620802D0 (en) 2006-11-29

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