Fresh water control system and method

• US 4,914,758 A
• Filed: 06/27/1988
• Issued: 04/10/1990
• Est. Priority Date: 06/27/1988
• Status: Expired due to Term

• Current Assignee: Sloan Valve Company
• Original Assignee: Bauer Industries, Inc.
• Inventors: Shaw, Daniel C.
• Primary Examiner(s): Recla, Henry J.
• Assistant Examiner(s): FETSUGA, ROBERT M
• Application Number:
  US07/212,405
• Time in Patent Office: 652 Days
• Field of Search: 4/300, 4/301-305, 4/313, 4/623, 4/DIG. 3, 4/DIG. 9, 4/661, 137/624.11, 137/118, 137/624.12
• US Class Current: 4/304
• CPC Class Codes: E03B 1/00 Methods or layout of installations for water supply E03B3/00, E03B9/00 take precedence
• CPC Class Codes: F17D 3/00 Arrangements for supervising or controlling working operations
• CPC Class Codes: Y10T 137/2657 Flow rate responsive
• CPC Class Codes: Y10T 137/86397 With independent valve controller

Abstract

The method of controlling operation of a plurality of fixtures comprises the steps of establishing a maximum liquid flow rate and determining which of the fixtures required operation. A determination is then made of the liquid flow rate of the fixture requiring operation and a calculation is made of whether operation of the fixture requiring operation will cause the maximum flow rate to be exceeded. The fixture requiring operation is caused to operate if the maximum flow rate will not be exceeded and is prevented from operating if the maximum flow rate will be exceeded.

Claims

1. The method of controlling operation of a plurality of liquid operable fixtures, each fixture having a liquid flow rate and the liquid flow rate of at least one fixture differing from the liquid flow rate of at least one other fixture, comprising the steps of:

(a) establishing a maximum liquid flow rate;

(b) determining which of the fixtures requires operation;

(c) determining the liquid flow rate of the fixture requiring operation;

(d) calculating whether operation of the fixture requiring operation will cause the maximum flow rate to be exceeded; and

(e) causing the fixture requiring operation to operate if the maximum flow rate will not be exceeded and preventing operation of the fixture requiring operation until sufficient liquid capacity is available if the maximum flow rate will be exceeded.

2. The method of claim 1, including the step of:

(a) determining the fixture requiring operation with sensor means, and a sensor means being operably associated with each of the fixtures.

3. The method of claim 2, including the step of:

(a) determining the fixture requiring operation with infrared sensor means.

4. The method of claim 2, including the step of:

(a) determining the fixture requiring operation with electromagnetic sensor means.

5. The method of claim 1, including the step of:

(a) determining Whether any other fixture is operating prior to calculating whether operation of the fixture requiring operation will cause the maximum flow rate to be exceeded.

6. The method of claim 1, including the step of

(a) preventing subsequent operation of any fixture which operates while the fixture requiring operation is prevented from operating.

7. The method of claim 1, including the step of:

(a) establishing the maximum flow rate in response to a remotely located controller.

8. The method of claim 1, including the step of'"'"'

(a) preventing operation of a fixture requiring for a preselected period.

9. The method of claim 1, including the step of:

(a) establishing the maximum flow rate as a function of external demands.

10. The method of claim 1, including the step of:

(a) sequentially operating the fixtures requiring operation which are prevented from operating.

11. The method of controlling liquid flow to a plurality of liquid operable mixtures operably connected to a liquid supply and with each fixture utilizing a predetermined quantity of liquid during operation and the predetermined quantity of at least one fixture being different from the predetermined quantity of at least one other fixture and each fixture having a remotely operable valve for causing operation thereof and each valve operably associated with a controller and a detector means being operably associated with each of the fixtures for detecting usage thereof and the detector means being operably associated with the controller for signaling a need to operate the associated valve, comprising the steps of:

(a) establishing a maximum liquid flow rate for the supply;

(b) signaling the controller the need of one of the fixtures to operate;

(c) determining the liquid flow rate of the fixture needing operation;

(d) determining whether any other fixture is operating;

(e) calculating the liquid flow of the operating fixtures and adding to that the liquid flow of the fixture needing operation and thereby generating a required liquid flow rate;

(f) comparing the required liquid flow rate with the maximum liquid flow rate; and

,

(g) operating the fixture needing operation if the required liquid flow rate is less than the maximum liquid flow rate and preventing operation of the fixture needing operation if the required liquid flow rate exceeds the maximum liquid flow rate.

12. The method of claim 11, including the step of:

(a) preventing operation of any fixture which operates while the fixture needing operation is prevented from operating.

13. The method of claim 11, including the steps of:

(a) determining whether the maximum liquid flow rate is being exceeded; and

,

(b) operating an alarm if the maximum liquid flow rate is being exceeded.

14. The method of claim 11, including the step of:

(a) establishing the maximum liquid flow rate in response to external demands on the supply.

15. The method of claim 11, including the step of:

(a) delaying for a selected period operation of any fixture needing operation.

16. The method of operating a plumbing system, comprising the steps of:

(a) providing a fresh water supply and a sewage drain;

(b) providing a plurality of urinals, each urinal haVing an inlet in fluid communication with the supply and an outlet in fluid communication with the drain;

(c) providing a plurality of toilets, each toilet having an inlet in fluid communication with the supply and an outlet in fluid communication with the drain;

(d) providing a plurality of sinks, each sink having an inlet in fluid communication with the supply and an outlet in fluid communication with the drain;

(e) establishing a maximum water flow for the supply;

(g) determining which of the sinks, toilets and/or urinals requires operation;

(h) determining whether any other sink, toilet and/or urinal is operating;

(i) determining the water flow of the sink, toilet and/or urinal which is operating and adding thereto the water flow of the sink, toilet or urinal requiring operation and thereby determining required flow;

(j) comparinq the required flow with the maximum water flow; and

,

(k) operating the sink, toilet or urinal requiring operation if required flow is less than maximum water flow and preventing operation of the sink, toilet or urinal requiring operation if the required flow exceeds the maximum water flow.

17. The method of claim 16, including the step of:

(a) preventing subsequent operation of any sink, toilet or urinal which operates while the sink, toilet or urinal requiring operation is prevented from operating.

18. The method of claim 16, including the step of:

(a) delaying for a selected period operation of any sink, toilet or urinal requiring operation.

19. The method of claim 16, including the step of:

(a) determining which of the sinks, toilets or urinals operation through a sensor means operably associated therewith and remote therefrom.

20. The method of claim 19, including the step of:

(a) providing electromagnetic detector means as the sensor means.

21. The method of claim 16, including the step of:

(a) arranging the sinks, toilets and urinals into a plurality of groups, each group comprising at least one sink, toilet and urinal.

22. The method of claim 21, including the steps of:

(a) establishing a maximum water flow for each of the groups; and

,

(b) operating the toilet, sink or urinal of each group with reference to the maximum water flow for the associated group.

23. The method of claim 22, including the step of:

(a) establishing the maximum water flow for at least one group which differs from the maximum water flow for at least one other group.

24. The method of claim 16, including the step of:

(a) establishing the maximum water flow in response to external demands on the supply.

25. The method of claim 16, including the steps of:

(a) deleting from the maximum water flow the water flow required to operate the sinks;

(b) disregarding the water flow required for a sink when calculating required flow; and

,

(c) always permitting a sink to operate.

26. A method of controlling a fluid system, comprising the steps of:

(a) providing a plurality of at least first, second and third fluid handling means in operable association with a fluid source and a fluid drain, each of the fluid handling means requiring a predetermined volume of fluid to operate and the first means requiring the capability of operation at all non-emergency times;

(b) establishing a maximum fluid flow rate for the supply;

(c) deriving a modified flow rate by subtracting from the maximum fluid flow rate the fluid flow required in the event each of the first means are simultaneously operated;

(d) determining which of the second and/or third means requires operation;

(e) calculating whether operation of the second and/or means requiring operation will cause the modified flow rate to be exceeded; and

,

(f) operating the second and/or third means requiring operation if the modified flow rate will not be exceeded and preventing operation of the second and/or third means requiring operation if the modified flow rate will be exceeded.

27. The method of claim 26, including the step of:

(a) preventing subsequent operation of any one of the second and/or third means which operates prior to operation of the second and/or third means prevented from operating.

28. The method of claim 26, including the step of:

(a) determining which of the second and/or third means requires operation through sensor means, there being a sensor means proximate to and operably associated with each of the second and/or third means.

29. The method of claim 28, including the steps of:

(a) providing each of the second and third means with at least one electromagnetic valve means interposed between the source and the drain;

(b) interconnecting each of the electromagnetic valve means with an associated one of the sensor means; and

,

(c) operating the electromagnetic valve means in response to the associated sensor means.

30. The method of claim 26, including the step of:

(a) adjusting the maximum flow rate in response to external demands on the supply.

31. The method of claim 26, including the steps of:

(a) arranging the first, second and third means into a plurality of groups, with each group comprising at least one first, second and third means;

(b) establishing a maximum flow rate for each group;

(c) deriving a modified flow rate for each group by subtracting from the maximum flow rate for each group the fluid flow required in the event each first means of the group should be simultaneously operated;

(d) determining for each group which of the second and/or third means requires operation;

(e) calculating for each group whether operation of second and/or third means requiring operation will Cause the group modified flow rate to be exceeded; and

,

(f) operating the second and/or third means requiring operation if the group modified flow rate will not be exceeded and preventing operation of the second and/or third means requiring operation if the group modified flow rate will be exceeded.

32. The method of claim 31, including the step of:

(a) establishing a maximum flow rate for one of the groups differs from the maximum flow rate for at least one other group.

33. The method of claim 31, including the steps of:

(a) providing a sink as the first means;

(b) providing a toilet as the second means; and

,

(c) providing a urinal as the third means.

34. A liquid control system for combination with a liquid supply and a liquid drain interconnected by a plurality of first, second and third liquid operating means wherein each of the liquid operating means is operable through a remotely controlled valve and the liquid flow rate of at least one of the operating means is different than the liquid flow rate of at least one other of the operating means, the liquid control system comprising:

(a) a plurality of sensors, each sensor for operable association with one of the liquid operating means for determining the need of the associated liquid operating means to operate; and

,

(b) control means for operable association with each of said sensors for identifying the liquid operating means requiring operation and for operable association with each of the valves for causing selected operation thereof, said control means includes first means for establishing a maximum liquid flow rate for the supply, calculating means for determining whether operation of the liquid operating means requiring operation will cause the maximum flow rate to be exceeded, and second means for causing operation of the valve of the liquid operating means requiring operation if the maximum flow rate will not be exceeded and for preventing operation of the valve of the liquid operating means requiring operation if the maximum flow rate will be exceeded.

35. The system of claim 34, wherein:

(a) each of said sensor means is a radiant energy detector.

36. The system of claim 35, wherein:

(a) each of said detectors is an infrared sensor.

37. The system of claim 34, wherein:

(a) said control means further includes third means for preventing subsequent operation of any of the liquid operating means which operates prior to operation of the liquid operating means requiring operation and prevented from operating by said second means.

38. The system of claim 34, wherein:

(a) said control means includes means for adjusting the maximum flow rate.

39. The system of claim 34, wherein:

(a) said control means includes means for selectively grouping said sensors into a plurality of operating units so that a maximum flow rate is established for each unit and said calculating means and said second means cause operation of a liquid operating means in a unit in response to the maximum liquid flow rate for the associated unit.

40. The system of claim 39, wherein:

(a) said control means includes means for independently the maximum flow rate for each unit.

41. The system of claim 34, wherein:

(a) said control means includes means for delaying for period operation of the first, second and third liquid operating means.

42. The system of claim 34, wherein said control means includes:

(a) means for subtracting from the maximum flow rate the liquid flow required if each of any of a selected one of the liquid, operating means is operated so that operation of any one of the selected one of the liquid operating means is assured.

43. A plumbing system, comprising:

(a) a fresh water supply and a Waste water drain;

(b) a plurality of water operating means interposed said supply and said drain, each operating means includes a remotely operable valve means for establishing fluid communication between said supply and said drain;

(c) a plurality of sensor means, each sensor means proximate one of said water operating means for determining when the associated operating means requires operation; and

,

(d) control means operably associated with each of said sensor means and with said valve means and including means for identifying the water operating means requiring operation, said control means further includes first means for establishing a maximum fresh water flow rate, calculating means for determining whether operation of the operating means requiring operation will cause the maximum flow rate to be exceeded, and second means for causing operation of the valve of the operating means requiring operation if the maximum flow rate will not be exceeded and for preventing operation of the water operating means requiring operation if the maximum flow rate will be exceeded.

44. The system of claim 43, wherein:

(a) each of said sensor means is an infrared sensor.

45. The system of claim 43, wherein:

(a) said control means includes means for adjusting the maximum flow rate.

46. The system of claim 43, wherein:

(a) said control means includes means for preventing subsequent operation of any operating means which operates while the operating means requiring operation is prevented from operating.

47. The system of claim 43, wherein:

(a) said control means includes means operably with said supply for determining whether the maximum flow rate is being exceeded and for providing an alarm in response thereto.

48. The system of claim 43, wherein said operating means includes:

(a) a plurality of first operating means having a first predetermined water flow rate;

(b) a plurality of second operating means having a second predetermined water flow rate; and

,

(c) a plurality of third operating means having a third predetermined flow rate.

49. The system of claim 48, wherein said control means includes:

(a) means for calculating the total water flow rate by operation of all of any selected one of said first, second and third operating means; and

,

(b) means for subtracting the total water flow rate from the maximum water flow rate and thereby deriving a modified maximum flow rate and for causing the modified maximum flow rate to be substituted for the maximum flow rate so that operation of any one of the selected first, second and third operating means is assured.

50. The system of claim 49, wherein:

(a) said control means includes means for selectively arranging said sensor means into a plurality of groups and for establishing a maximum flow rate for each group so that operation of the means of a group is dependent upon the maximum flow rate for the selected group.

51. The system of claim 50, wherein:

(a) said control means includes means for independently establishing the maximum flow rate for each group.

52. The system of claim 49, wherein:

(a) said first operating means includes a sink;

(b) said second operating means includes a urinal; and

,

(c) said third operating means includes a toilet.

53. The system of claim 43, wherein:

(a) said control means includes means for delaying for a selected period of operation of said operating means.