Scheduled hot water heating based on automatically periodically adjusted historical data

• US 4,522,333 A
• Filed: 09/16/1983
• Issued: 06/11/1985
• Est. Priority Date: 09/16/1983
• Status: Expired due to Term

• Current Assignee: Pro-Temp Controls Incorporated
• Original Assignee: Fluidmaster Incorporated
• Inventors: Blau, Frederick Jr., Vandermeyden, Tom R., Gross, John M.
• Primary Examiner(s): BENNETT, HENRY A
• Application Number:
  US06/532,665
• Time in Patent Office: 634 Days
• Field of Search: 62/231, 62/59, 236/46 F, 236/46 R, 236/46 A, 236/20 R, 236/46 C, 126/362, 364/505
• US Class Current: 236/20.00R
• CPC Class Codes: F24D 17/0078 Recirculation systems
• CPC Class Codes: F24D 19/1051 for domestic hot water
• CPC Class Codes: F24H 15/174 Supplying heated water with desired temperature or desired range of temperature
• CPC Class Codes: F24H 15/219 after heating
• CPC Class Codes: F24H 15/223 in the water storage tank
• CPC Class Codes: F24H 15/238 Flow rate
• CPC Class Codes: F24H 15/269 Time, e.g. hour or date
• CPC Class Codes: F24H 15/355 Control of heat-generating means in heaters
• CPC Class Codes: F24H 15/414 using electronic processing, e.g. computer-based
• CPC Class Codes: G05D 23/1917 using digital means
• CPC Class Codes: G05D 23/20 with sensing elements having variation of electric or magnetic properties with change of temperature G05D23/13 takes precedence

Abstract

A conventional hot water heating system generally of the type for heating water in multiple units of hotels, motels and the like and using any heating medium has a processor and control assembly operationally connected to at least a heating control means, a water temperature sensing means and a water flow sensing means thereof. The processor and control assembly divides the time into exact time periods, say one-half hour, and the time periods are grouped into a group of consecutive time periods, say a week. Taking any individual time period, a directly preceding time period is checked with the same time period in the preceding group of time periods and if the two match within a given degree, the assembly adopts all of its settings from its particular time period a week ago. In addition, the assembly exactly records the various settings throughout that particular time period and when that time period comes up again one week from now, those are the new settings by the processor and control assembly to be used. Still further, at any time in a time period that high hot water flow from the water tank is detected by the water flow sensing means and the heating control means has not yet begun to begin heating more hot water, the water flow will immediately turn on the heating control means to thereby eliminate needless delays in the heating of water. By the heating of water in the manner described, therefore, the maximum water temperature can always be maintained at a minimum and there is still relative assurance of a hot water supply at all times.

Claims

1. In a water heater control system for constantly controlling the heating and use of hot water from a water tank of the type having water inlet and outlet means for feeding water to and from the tank, heating means for heating the water at the tank, heating control means for controlling the heating means, adjustable water temperature sensing means for sensing water temperature at the water tank and by controlling the heating control means maintaining the water temperature between determined limits, water distribution means operably connected to the water means for distributing hot water for use;

the control system further including;

water flow sensing means for sensing an amount of water flow through said water tank;

processor and control means operationally connected to said heating control means and said water temperature sensing means and said water flow sensing means for determining the start of a particular time period which is one of a definite group of consecutive time periods and each is a repeat of the same one of preceding groups of time periods, for setting said heating control means and said water temperature sensing means and said water flow sensing means for throughout said particular time period exactly according to the overall averages of actual settings recorded in actual use during at least a certain previous of said same one of a previous group of time periods, for actually recording settings directly exactly as they occur of said heating control means and said water temperature sensing means and said water flow sensing means throughout and according to the water actually used during the particular time period and actual degrees of temperature above a given agreed upon minimum required for maintaining hot water with its use, for repeating for each succeeding of said group of consecutive time periods to the end thereof, for starting and continuing using a next group of consecutive time periods and based on the present actually recorded settings of certain previous groups of consecutive time periods, for continuing with following groups of consecutive time periods and based on actually recorded settings taken at least from certain preceding of said groups of consecutive time periods.

2. In a water heater control system as defined in claim 1 in which said processor and control means is operationally connected for said setting of said heating control means and said water temperature sensing means and said water flow sensing means for the beginning of any time period further includes checking the same settings of a directly preceding time period and that time period in certain of a preceding group or groups of time periods and if comparison of said settings is not within a certain amount, automatically setting for throughout said particular time period said settings to a determined higher limit.

3. In a water heater control system as defined in claim 1 in which said processor and control means is operationally connected for said setting of said heating control means and said water temperature sensing means and said water flow sensing means for the beginning of any time period further includes checking the same settings of a directly preceding time period and that time period in certain of a preceding group or groups of time periods and if comparison of said setting is not within a given higher amount, automatically setting for throughout said particular time period said settings to a determined higher limit.

4. In a water heater control system as defined in claim 1 in which said processor and control means is operationally connected for at any time during any of said time periods said water flow sensing means detects water flow above a certain amount while said heating control means senses said heating means is in non-operable position, said heating means is turned to operable position and retained in said operable position until water flow is no longer above said certain amount.

5. In a water control system as defined in claim 1 in which said water temperature sensing means is positioned at said water outlet means of said water tank for sensing water temperature at said water outlet means;

and in which said processor and control means is operationally connected for at any time during any of said time periods said water flow sensing means detects water flow above a certain amount while said heating control means senses said heating means is in non-operable position, said heating means is turned to operable position and retained in said operable position until water flow is no longer above said certain amount.

6. In a water heater control system as defined in claim 1 in which said processor and control means is operationally connected for said setting of said heating control means and said water temperature sensing means and said water flow sensing means for the beginning of any time period further includes checking the same settings of a directly preceding time period and that time period in certain of a preceding group or groups of time periods and if comparison of said settings is not within a certain amount, automatically setting for throughout said particular time period said settings to a determined higher limit;

and in which said processor and control means is still further operationally connected for at any time during any of said time periods said water flow sensing means detects water flow above a certain amount while said heating control means senses said heating means is in non-operable position, said heating means is turned to operable position and retained in said operable position until water flow is no longer above said certain amount.

7. In a water heater control system as defined in claim 1 in which said processor and control means is operationally connected for said setting of said heating control means and said water temperature sensing means and said water flow sensing means for the beginning of any time period further includes checking the same settings of a directly preceding time period and that time period in certain of a preceding group or groups of time periods and if comparison of said settings is not within a given higher amount, automatically setting for throughout said particular time period said settings to a determined higher limit;

and in which said processor and control means is still further operationally connected for at any time during any of said time periods said water flow sensing means detects water flow above a certain amount while said heating control means senses said heating means is in non-operable position, said heating means is turned to operable position and retained in said operable position until water flow is no longer above said certain amount.

8. In a water heater control system as defined in claim 1 in which said processor and control means is operationally connected for said setting of said heating control means and said water temperature sensing means and said water flow sensing means for the beginning of any time period further includes checking the same settings of a directly preceding time period and that time period in certain of a preceding group or groups of time periods and if comparison of said settings is not within a certain amount, automatically setting throughout said particular time period said settings to a determined higher limit;

in which said water temperature sensing means is positioned at said water outlet means of said water tank for sensing water temperature at said water outlet means; and

in which said processor and control means is still further operationally connected for at any time during any of said time periods said water flow sensing means detects water flow above a certain amount while said heating control means senses said heating means is in non-operable position, said heating means is turned to operable position and retained in said operable position until water flow is no longer above said certain amount.

9. In a water heater control system as defined in claim 1 in which said processor and control means is operationally connected for said setting of said heating control means and said water temperature sensing means and said water flow sensing means for the beginning of any time period further includes checking the same setting of a directly preceding time period and that time period in certain of a preceding group or groups of time periods and if comparison of said settings is not within a given higher amount, automatically setting for throughout said particular time period said settings to a determined higher limit;

and in which said processor and control means is still further operationally connected for at any time during any of said time periods said water flow sensing means detects water flow above a certain amount while said heating control means senses said heating means is in non-operable position, said heating means is turned to operable position and retained in said operable position until water flow is no longer above said certain amount.

10. In a water heater control system as defined in claim 1 in which said group of consecutive time periods are each one week in length.

11. In a water heater control system as defined in claim 1 in which said time periods in each of said groups of consecutive time periods are one-half hour in length.

12. In a water heater control system as defined in claim 1 in which said group of consecutive time periods are each one week in length;

and in which said time periods in each of said groups of consecutive time periods are one-half hour in length.

13. In a water heater control system as defined in claim 1 in which said processor and control means is operationally connected for said setting of said heating control means and said water temperature sensing means and said water flow sensing means for the beginning of any time period further includes checking the same settings of a directly preceding time period and that time period in a preceding group of time periods and if comparison of said settings is not within a given higher amount, automatically setting for throughout said particular time period said settings to a determined higher limit;

and in which said group of consecutive time periods are each one week in length.

14. In a water heater control system as defined in claim 1 in which said water temperature sensing means is positioned at said water outlet means of said water tank for sensing water temperature at said water outlet means;

in which said processor and control means is operationally connected for at any time during any of said time periods said water flow sensing means detects water flow above a certain amount while said heating control means senses said heating means is in non-operable position, said heating means is turned to operable position and retained in said operable position until water flow is no longer above said certain amount; and

in which said group of consecutive time periods are one week in length.

15. In a water heater control system as defined in claim 1 in which said processor and control means is operationally connected for said setting of said heating control means and said water temperature sensing means and said water flow sensing means for the beginning of any time period further includes checking the same settings of a directly preceding time period and that time period in a preceding group of time periods and if comparison of said settings is not within a given higher amount, automatically setting for throughout said particular time period said settings to a determined higher limit;

in which said processor and control means is still further operationally connected for at any time during any of said time periods said water flow sensing means detects water flow above a certain amount while said heating control means senses said heating means in non-operable position, said heating means is turned to operable position and retained in said operable position until water flow is no longer above said certain amount; and

in which said group of consecutive time periods are each one week in length.

16. In a water heater control system as defined in claim 1 in which said processor and control means is operationally connected for said setting of said heating control means and said water temperature sensing means and said water flow sensing means for the beginning of any time period further includes checking the same settings of a directly preceding time period and that time period in certain of a preceding group or groups of time periods and if comparison of said settings is not within a given higher amount, automatically setting for throughout said particular time period said settings to a determined higher limit;

in which said processor and control means is still further operationally connected for at any time during any of said time periods said water flow sensing means detects water flow above a certain amount while said heating control means senses said heating means is in non-operable position, said heating means is turned to operable position and retained in said operable position until water flow is no longer above said certain amount;

in which said group of consecutive time periods are each one week in length; and

in which said time periods in each of said groups of consecutive time periods are one-half hour in length.

17. In a method constantly controlling the heating and use of hot water as provided by a water heating system;

the steps of;

beginning a particular time period which is one of a definite group of consecutive time periods and each is the repeat of the same one of a preceding group of time periods;

at said beginning of said particular time period and to remain throughout said particular time period, setting said water heating system to produce hot water exactly as previously recorded on an averaged basis at least during certain of the same ones of the preceding group or groups of time periods;

throughout said particular time period, recording the actual amounts of hot water used as indicated by said water heating system and sufficient in temperature above a determined minimum to substantially maintain hot water with its use;

continue in the same manner in order with following of particular time periods until the end of said definite group of consecutive time periods;

starting on a next group of time periods and following with other groups of time periods in order and always originally at the beginning of each time period, setting said water heating system to produce hot water exactly according to that particular time period but at least at certain of a preceding group or groups of time periods and then recording actual amounts of hot water used throughout the particular time period.

18. In a method as defined in claim 17 including the further step of:

at the beginning of each time period regardless of its particular order, comparing actual amounts of hot water used of a directly preceding time period and that time period in a preceding group or groups of time periods and if the amounts of hot water are not within a certain determined amount, setting the amounts for throughout said particular time period to a determined higher amount.

19. In a method as defined in claim 17 including the further step of:

at the beginning of each time period regardless of its particular order, comparing actual amounts of hot water used of a directly preceding time period and that time period in a preceding group or groups of time periods and if the amounts of hot water are not within a given higher amount, setting the amounts for throughout said particular time period to a determined higher amount.

20. In a method as defined in claim 17 in which said method includes the further step of:

constantly monitoring water flow and when said flow is above a predetermined amount without heating means for said water heating system being turned operable, turning said heating means to operable until water flow is no longer above said predetermined amount.

21. In a method as defined in claim 17 in which said water temperature for said water heating system is always taken at an outlet side of said water heating system spaced from an inlet side thereof;

and in which said method includes the further step of;

constantly monitoring water flow and when said flow is above a predetermined amount without heating means for said water heating system being operable, turning said heating means to operable until water flow is no longer above said predetermined amount.

22. In a method as defined in claim 17 including the further step of:

at the beginning of each time period regardless of its particular order, comparing actual amounts of hot water used of a directly preceding time period and that time period in a preceding group or groups of time periods and if the amounts of hot water are not within a certain determined amount, setting the amounts for throughout said particular time period to a determined higher amount; and

in which said method includes the further step of;

constantly monitoring water flow and when said flow is above a predetermined amount without heating means for said water heating system being turned operable, turning said heating means to operable until water flow is no longer above said predetermined amount.

23. In a method as defined in claim 17 including the further step of:

at the beginning of each time period regardless of its particular order, comparing actual amounts of hot water used of a directly preceding time period and that time period in a preceding group or groups of time periods and if the amounts of hot water are not within a given higher amount, setting the amounts for throughout said particular time period to a determined higher amount; and

in which said method includes the further step of;

constantly monitoring water flow and when said flow is above a predetermined amount without heating means for said water heating system being turned operable, turning said heating means to operable until water flow is no longer above said predetermined amount.

24. In a method as defined in claim 17 including the further step of:

at the beginning of each time period regardless of its particular order, comparing actual amounts of hot water used of a directly preceding time period and that time period in a preceding group or groups of time periods and if the amounts of hot water are not within a certain determined amount, setting the amounts for throughout said particular time period to a determined higher amount;

in which said water temperature for said water heating system is always taken at an outlet side of said water heating system spaced from an inlet side thereof; and

in which said method includes the further step of;

constantly monitoring water flow and when said flow is above a predetermined amount without heating means for said water heating system being operable, turning said heating means to operable until water flow is no longer above said predetermined amount.

25. In a method as defined in claim 17 including the further step of:

at the beginning of each time period regardless of particular order, comparing actual amounts of hot water used of a directly preceding time period and that time period in a preceding group or groups of time periods and if the amounts of hot water are not within a given higher amount, setting the amounts for throughout said particular time period to a determined higher amount;

in which said water temperature for said water heating system is always taken at an outlet side of said water heating system spaced from an inlet side thereof; and

in which said method includes the further step of;

constantly monitoring water flow and when said flow is above a predetermined amount without heating means for said water heating system being operable, turning said heating means to operable until water flow is no longer above said predetermined amount.

26. In a method as defined in claim 17 in which each of said groups of consecutive time periods

27. In a method as defined in claim 17 in which each of said time periods of each of said groups equals one-half hour.

28. In a method as defined in claim 17 in which each of said groups of consecutive time periods equals one week;

and in which each of said time periods of each of said groups equals one-half hour.

29. In a method as claimed in claim 17 including the further step of:

at the beginning of each time period regardless of its particular order, comparing actual amounts of hot water used of a directly preceding time period and that time period in a directly preceding group of time periods and if the amounts of hot water are not within a given higher amount, setting the amounts for throughout said particular time period to a determined higher amount; and

in which each of said groups of consecutive time periods equals one week.

30. In a method as defined in claim 17 in which said water temperature for said water heating system is always taken at an outlet side of said water heating system spaced from an inlet side thereof;

in which said method includes the further step of;

constantly monitoring water flow and when said flow is above a predetermined amount without heating means for said water heating system being operable, turning said heating means to operable until water flow is no longer above said predetermined amount; and

in which each of said groups of consecutive time periods equals one week.

31. In a method as defined in claim 17 including the further step of:

at the beginning of each time period regardless of particular order, comparing actual amounts of hot water used of a directly preceding time period and that time period in a directly preceding group of time periods and if the amounts of hot water are not within a given higher amount, setting the amounts for throughout said particular time period to a determined higher amount;

in which said water temperature for said water heating system is always taken at an outlet side of said water heating system spaced from an inlet side thereof;

in which said method includes the further step of;

constantly monitoring water flow and when said flow is above a predetermined amount without heating means for said water heating system being operable, turning said heating means to operable until water flow is no longer above said predetermined amount; and

in which each of said groups of consecutive time periods equals one week.

32. In a method as defined in claim 17 including the further step of:

at the beginning of each time period regardless of particular order, comparing actual amounts of hot water used of a directly preceding time period and that time period in a preceding group or groups of time periods and if the amounts of hot water are not within a given higher amount, setting the amounts for throughout said particular time period to a determined higher amount;

in which said water temperature for said water heating system is always taken at an outlet side of said water heating system spaced from an inlet side thereof;

in which said method includes the further step of;

constantly monitoring water flow and when said flow is above a predetermined amount without heating means for said water heating system being operable, turning said heating means to operable until water flow is no longer above said predetermined amount;

in which each of said groups of consecutive time periods equals one week; and

in which each of said time periods of each of said groups equals one-half hour.