automatic water heater control system

Thank You in advanced sir. electric elements or furnace tubes with furnace tubes, Water-storage heaters with immersed heating elements, e.g. A system for detecting stacking and controlling temperature in a water heater. Our arduino pro mini doesn't work and we couldn't upload codes. All rights reserved. The input parameter 302 is the temperature of the mixed flow, and the output parameter 304 is the fire rate. After completion please upload image. This website uses cookies to improve your experience while you navigate through the website. This website uses cookies to improve your experience. boilers, continuous-flow heaters or water-storage heaters, Water-storage heaters with immersed heating elements, e.g. pool solar control heating automation diagram system automatic heater rimstar plumbing water valve temperature valves Our source is Line to Line. the maximum set point offset is in a range from ten degrees to thirty degrees F. the constant is approximately two degrees F.; and. The temperature control system controls the temperature of the water by establishing an empirical, monotonic relationship between the current applied to the heater and the temperature of the mixed flow. The inlet flow pipe 16 is located towards the top of the shell 30 and communicates with the interior of the shell 30. we can barely find out the problem. and i'd like to ask what is the rated volts of the water heater? A first portion of the inlet diverting pipe may be a carbon steel pipe 60 having a inner diameter. the controller determines a water temperature change rate from the sense signal; the controller provides the control signal according to the water temperature set point mechanism and the sense signal; and. voltex 11/764,940, filed Jun. Drain your baptistry with the flip of a switch at the control panel. To recap, stacking may happen when water draw and heating fall into one of the following patterns. Attach that bracket to the immersion water heater so as to fit the temperature sensor and secure the wire with zip tie.Note: Since the temperature sensor is fitted very near to heating element, temperature raises very fast and the heater will be shutdown. If stacking is not detected, then the setpoint may be gradually restored to optimize water heater capacity. Buzzer is connected to Arduino pin 9. A portion of the flow in the inlet flow pipe 16 is diverted into an inlet diverting pipe 18, which may include several components. Also changed the micro controller to Arduino pro mini. The outlet flow diverting pipe 22 is connected to the outlet flow pipe 20 by use of a 2 carbon steel weldolet 72. The heated water flows out of the heat exchanger tank 12 through the outlet flow pipe 20. For an exemplary embodiment having three circuits, it is noted that a single SCR could provided for each circuit. It is noted that the above capacities and dimensions are exemplary, and the water heating system as described herein may be modified in order to meet the demands of other systems. There are two ways to rectify this problem. Sign up today to receive the latest news, product updates and new product releases. Hello sir I have seen your project and I am trying to do the same at my home and i am using Arduino UNO atmega328P. Water heaters may be used in homes, businesses and just about any establishment that has a need for heated water. can you please picture the whole circuit. The portion of the outlet flow that is diverted by the second orifice disk 74 passes through the weldolet 72 into the outlet diverting pipe 22. After adjusting the tuning valves 62 and 82, the ratio of inlet flow and outlet flow into the mixed flow pipe 24 is fixed. Other methods include heating the stored water without pumping means and relying on natural convection to accomplish temperature control. 2, the heating elements 40 may each comprise a coiled resistor wire 44, manufactured from a material that provides the desired heating characteristics, such as nickel-chromium. Solder 10k resistor to the board which is used for the push button. PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY. With reference to FIG. if the heating rate is sufficiently high, and there is a long burn time, then the set point offset is reduced. we even followed the connection in the picture above. Hello sir!I am doing same in arudino uno.. Can it's works ????? Features: A Deluxe, completely automatic remote control system provides effortless, accurate control of all fill, heat and drain functions from an attractive remote control console panel. Set the temperature and click the button once again to start heating. In this version I added temperature adjustment using rotary encoder and also added a display. The mixed flow passes through another portion 96 of the mixed flow pipe 24, which may be a carbon steel pipe, and continues through another weldolet 98 which communicates with the outlet flow pipe 20. When we set a temperature, that is saved in the EEPROM and when restarted the previous temperature is loaded and it will be cut-off at that temperature. I provided the code in next step separately. the controller detects stacking and compensates the set point mechanism according to the sense signal to keep temperature stacking of the water within a safe limit. A first tuning valve on the inlet flow diverting pipe is provided to control flow in the inlet diverting pipe. A second tuning valve on the outlet flow diverting pipe is provided to control flow in the outlet diverting pipe. No. A portion of the water in the inlet flow pipe 16 passes through the orifice 58 and into the heat exchanger tank 12, and another portion hits the plate 56 and is diverted into the diverting pipe 18. The component parts of the inlet diverting pipe 18, of the outlet diverting pipe 22, and of the mixed flow pipe 24 described herein are exemplary, and it is noted that this configuration could be substituted with different components or with tubing. At step (4), the fire rate is set to the minimum current, i.e., a fire rate of about 10%, on the load controller 98. The information for an exemplary table is illustrated in graphical form in FIG. Copyright 2005 - var mdate = new Date(); document.write(mdate.getFullYear()); Southeast Church Supply. The temperature sensor may sense the water temperature at or near the bottom of the water heater tank, which during stacking is less than the water temperature set point, even though the water at or near the top of the water heater tank may be substantially hotter than the water temperature set point. Privacy Policy This system has a buzzer i.e., when the water is heated buzzer starts to sound. It is noted that a fewer or greater number of circuits may be used, depending upon the wiring of the heater. if the heating rate is sufficiently high heating rate and there is a long heater on time, then the set point offset is reduced. ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HONEYWELL INTERNATIONAL INC.;REEL/FRAME:047785/0166, Free format text: It may be noted that deep water draws normally do not cause stacking after heating. Also, the heating cycles may occur relatively often. The other approach and changes and/or additions may include, but not be limited to, a specific technique for the adjustment of a setpoint offset, and a use of heating rate to detect stacking and reduce setpoint to limit stacking. With a sensor mounted at the lower portion of the tank, the sensed heating rate may be faster than that when the water is close to uniform. If the sensed temperature is close to the setpoint, the outlet water may be significantly higher. What is the problem sir? Aerco International, Inc. (Northvale, NJ), 392/465, 392/498, 122/14.1, 122/13.07, 392/485, 392/474, 392/466. The heater 14 in the exemplary embodiment may be an immersion heater, such as the Chromalox immersion heater manufactured by the Wiegand Industrial Division of Emerson Electric Co., of Ogden, Utah., which is rated at 440V and 125 kW. A second pattern may include a long duration low to medium flow rate draw with long heating. For an incompressible fluid such as water, the heat capacity c is constant. The present approach may use a detection technique to note stacking. The mixed flow then combines with the outlet flow. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g.

The controller may use a sensing and calculation technique to detect the stacking. Material 48 electrically insulates resistor wire 44 and conducts the heat produced by the resistor wire 44 to the metal sheath 46, thereby heating the water in the heat exchanger tank 12. generation, Electric instantaneous water heater with enhanced temperature control, Dynamically-stopped and statically-balanced valve, <- Previous Patent (Apparatus and method). & Terms of Use. Is there anything that I should change because when I am connecting all components, The temperature sensor is getting heated and the display will be in standby mode and if I change the temperature with rotary encoder it is not changing. In this case, the offset would be a negative value under many operating conditions. The temperature control system comprises a temperature sensor configured to determine the temperature of the mixed flow in the mixed flow pipe. The tuning valve 62 may be connected to the next portion of the inlet diverting pipe, a copper tube 64, by a NPT compression fitting 66. Infinity Fluids Corporation, at least as early as May 24, 2000, Norwich, CT. Click for automatic bibliography For the Temperature Adjust, is it possible to do that automatically like turn it off and on when the temperature reaches a certain degree. The heat exchanger tank 12 is configured to receive unheated water from the inlet flow pipe 16, to contain the water which is heated as it flows around heating elements of the heater 14, and to direct the heated water to the outlet flow pipe 20 to be used for hot water faucets, showers, washing machines, etc. FIG. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. For example, for a 40% fire rate, the first circuit supplies 33%, and the third circuit is adjusted to about 21% of the third circuit's total output to provide the remaining 7%. FIG. 11/764,940, filed Jun. In operation, water heaters typically heat cold or ambient temperature water entering at or near the bottom of the water heater tank to a desired temperature using a gas-fired burner, an electric heater or some other heating element. The invention relates to a water heating system, and more particularly to an electric water heating system having a control system for controlling the amount of heat transfer between the electric heat element and the water by modulating the current to the heating element to supply potable water at a substantially constant, controlled temperature. At each fire rate, the first tuning valve 62 and the second tuning valve 82 are adjusted to control the relative proportions of the inlet flow and the outlet flow to obtain a heated outlet flow at the setpoint temperature, and measuring the resulting mixed flow temperature at temperature sensor 26. Such placement does not permit precise control of the temperature of the water near the outlet of the tank as the water is to be delivered to the appliances or other users of hot water. Furthermore, it is contemplated that the set point may be defined as the normal user-defined temperature set point plus the offset. The lower flange 34 may be bolted to a bottom portion 36, which may be a 16 diameter, 1 inch thick carbon steel plate having a flat or concave configuration. Water flow rates through the water heating system 10 depend, in part, on the demands by the users as described above, and thus may vary during operation. An exemplary load controller is Model BLC Series Base Load Controller manufactured by HDR Power Systems, Inc. of Columbus, Ohio. For a fire rate greater than about 33% but less than about 66%, the first circuit supplies current as controlled by the first contactor 100, and the third circuit is selectively adjusted to provide the remaining percentage commanded. The heater 14 is positioned within the shell 30 and heats the water as it flows around the heating elements through the heat exchanger tank 12. Necessary cookies are absolutely essential for the website to function properly. Second is to change the code. This is the modification of my old version. As illustrated in FIG. In the exemplary embodiment, the heater 14 includes 27 heating elements 40 which are controlled by three circuits, as described below. These objectives and characteristics are achieved, in accordance with the present invention, by providing a novel combination of several components, including a heat exchanger tank, an inlet flow diverting pipe, an outlet flow diverting pipe, a mixed flow diverting pipe, and a temperature control system. Privacy Policy Assigned to JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT, JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT. Sir! A thermostat or controller is often coupled to the sensor and the heater, and is programmed to control the heater to a water temperature set point based on the sensed temperature. 1 year ago, Hi Sandilya, I'm working on a project similar to this one but it's for heating water in a electric pressure cooker. The present system includes an approach which may use a detection technique to determine if stacking occurs. the constant is in a range from one degree to five degrees F.; and. While uploading the sketch in arduino IDE, you have to change the microcontroller to atmega 328. One may consider the case with no water draw. In one case, the offset may be 9 degrees. The heat exchanger tank has an inlet for receiving an inlet flow of liquid into the tank, an outlet for allowing an outlet flow of liquid to leave the tank.

Water heaters often heat water using the heat rises principle. For the exemplary embodiment described above, the tabular data was obtained at a plurality of fire rates between a substantially minimum current, e.g., about 10%, and a substantially maximum current, e.g., about 100%. U.S. patent application Ser. A further object of the present invention is to provide an empirical relationship between the temperature of a mixed flow of inlet water and outlet water and the current applied to the heating element to maintain the setpoint temperature. This is a technology in small box. No. All controls, switches and fill/drain valves,materials (except heater) are supplied along with complete installation and wiring instructions. If stacking is not detected, the setpoint may gradually be restored (i.e., reduce or remove offset) to optimize water heater capacity. a mechanism, having a water temperature set point, connected to the sensor and heater, wherein the mechanism detects a water temperature change rate according to the sensor at initial start-up of the heater and afterwards, the mechanism detects stacking, and the mechanism adjusts the water temperature set point via a set point offset to turn on or off the heater to limit top water temperature within a safe range when the stacking occurs in the container. upon a start of heating water in the water heater, monitoring the water temperature change rate; and. If significant stacking exists in the tank, then the bottom water may be heated much faster than the top water. We can use as normal water heater without the control of this system by using a separate slide switch(Auto/Manual).Some people said to me, it is better to buy a geyser which is very costly comparing to my project. In another instance, one may consider low draw rate with continuous heating. the maximum set point offset is approximately ten degrees F. 12. 3, water is introduced by the inlet flow pipe 16 into the heat exchanger tank 12 at the upper portion thereof. One is placing the sensor away from the heating element. Steps (7) through (9) are repeated for each additional data point; preferably, the process is repeated for fire rates of 30% to 90% at 10% increments. Only when the heating rate is high enough (and the burner has been on for a long time) may the setpoint offset be reduced. This flange 42 is typically bolted to the top flange 32 of the heat exchanger tank 12, such that the heating elements 40 are positioned within the interior of the heat exchanger tank 12 and immersed in the water when the heat exchanger tank 12 is filled. Water heaters with a single temperature sensor located at or near the bottom of the water heater tank may be particularly susceptible to stacking. I would like to see your version of water heater. 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Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. If stacking is detected, then the setpoint for the heater may be lowered so that the outlet water temperature is within a safe limit. if the water temperature change is small during a long heater on time, then the water temperature set point is not returned to an original setting because the stacking of water is still present due to a low water draw from the container; and. A water temperature control system comprising: a sensor that detects water temperature in a container; a heater that heats water in the container; and. (function (d, t) {

The present invention pertains to thermal control systems and particularly to control systems for water heaters. Plastic case USB mobile charger Rotary encoder Display Arduino pro mini 5v Relay module Switch Knob AC Socket Temperature sensor Buzzer 10k SMT resistor 4.7k resistor 1k resistor3-pin Mains cord SPDT Slide switch Immersion Water Heater. A sensor is often provided at or near the bottom end of the water heater tank to sense the temperature of the water. In one example case, the normal temperature set point may be, for example, 135 degrees Fahrenheit (F) and the differential may be 10 degrees. The shell 30 may be manufactured from ANSI SA-53 grade B carbon steel pipe. To obtain the mixed flow temperature for an intermediate current, e.g., a 20% fire rate, the following steps are performed: At step (7), the fire rate is set to 20% at the load controller 98; at step (8), the flow rate and temperature of the inlet flow are adjusted such that the outlet flow temperature is at the setpoint temperature, and at step (9), the temperature of the mixed flow sensed by temperature sensor 26 is recorded. Finally, for fire rates greater than about 66%, both the first and second circuits supply current as controlled by their respective contactors 100 and 102, and the third circuit is adjusted to meet the remaining percentage. The process controller uses a table look-up function, which refers to a table having mixed flow temperature as an input parameter and fire rate as an output parameter for a discrete number of data points, and a data interpolation routine as is known in the art . In order to prepare this graph, temperature measurements are made of the outlet flow and the mixed flow. As illustrated in FIG. i just saw your vid. The water heating system in accordance with the invention maintains the temperature of the outlet flow by adding heat to the water in the heat exchanger tank 12. At step (6), the tuning valves 62 and 82 are adjusted again to satisfy a second condition, i.e., that the temperature of the mixed flow is a predetermined temperature, i.e., about 3-4 F., lower than the setpoint temperature. Typical heating and cooling rates at various stacking conditions are shown in graphs of, The present control algorithm consists of the following items as shown in, Several items different from those of the approach in. Disassemble the charger and remove the PCB. For example, a single, larger SCR could be provided to modulate power to the three circuits, thereby eliminating the two contactors. This package includes everything but the actual heater/- please select one of our 3kw, 6kw or 11.5kw heaters to complete your baptistery heat and fill system. 2004-2022 FreePatentsOnline.com.

The plate 56 may comprise a inch thick copper plate. We need it badly Sir, because we do not know where to put the positive and negative end of the buzzer. In this case, the load controller 98 would be programmed to control the SCR for the full range of fire rates. For example, for an 80% fire rate, the first and second circuits supply the first 66%, and the third circuit is selectively adjusted to approximately 42% of the third circuit's power to provide the remaining 14%. 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, MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING, FLUID HEATERS, e.g.

Sitemap 20

automatic water heater control system