KR100559250B1 - An automatic feed valve/flow switch trouble automatic detection method make use of heating water temperature in gas boiler and apparatus - Google Patents

Abstract

The automatic water supply valve / water flow sensor failure detection method and apparatus for gas boiler using heating water temperature are for automatically detecting the failure of the automatic water flow valve and water flow detector in the boiler. The present invention is configured to pipe the water directly into the automatic water supply valve through the water flow sensor, the water is continuously supplied to the water tank despite the output of the drive signal from the controller for controlling the overall operation of the boiler to the automatic water supply valve In this case, even though it is not the use of hot water, the contact point of the water flow sensor is “ON” and the hot water ignition stroke is performed. If it is greater than the short-term reference slope, it is configured to generate an alarm by judging that the water flow sensor has failed. Accordingly, the present invention can automatically detect the automatic water supply valve and the water flow sensor failure to provide an effect that can quickly and accurately cope with the boiler failure.

Boiler, Automatic Water Supply Valve, Water Flow Detector, Heating Water Temperature Slope

Description

Automatic feed valve / flow switch trouble automatic detection method make using of heating water temperature in gas boiler and apparatus

1 is a configuration diagram schematically showing a configuration of a conventional gas boiler;

2 is a configuration diagram schematically showing a configuration of a gas boiler to which the present invention is applied;

3 is a gradient graph of heating water temperature;

4 is a flowchart illustrating a method for automatically detecting a water supply valve / water detector failure of a gas boiler using a heating water temperature according to the present invention.

<Description of the symbols for the main parts of the drawings>

20: gas boiler 21: water flow detector

22: automatic water supply valve 23: heating water temperature sensor

24: controller 25: alarm unit

26: communication unit 30: A / S center

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas boiler, and more particularly, a gas using a heating water temperature, which is capable of automatically detecting a failure of a flow switch and an automatic water supply valve by using a heating water temperature rising slope immediately after ignition. The present invention relates to an automatic water supply valve / water flow sensor failure detection device of a boiler and a method thereof.

Boilers used in homes and public buildings are used for heating or hot water.

Most of these boilers use oil or gas as fuel to burn through a burner, and then heat water using the combustion heat generated in the combustion process, and circulate the heated water (hot water) into a heating pipe in a room. Heating or supplying hot water to the bathroom, sink, etc. according to the needs of the user.

1 is a view showing a brief configuration of a conventional general boiler. As shown in FIG. 1, the boiler 10 is installed on the gas burner 17 and the gas burner 17 provided to burn the incoming gas to generate combustion heat, and receives the combustion heat of the gas burner 17. A heat exchanger 16 for heating the heating water, and a controller 18 for performing overall control over the operation of the boiler 10. In the boiler 10 of FIG. 1, the water in the pipe 11 must be constantly supplied at a predetermined level or higher in the heating pipe for the safe combustion of the cistern 11 and the boiler 10. A low water level detector 12 installed at an appropriate portion of the water tank 11 and a circulation pump P for supplying the water stored in the water tank 11 to the heat exchanger 16 to detect the falling. On the other hand, the boiler 10 of FIG. 1 is normally installed between the water pipe and the water tank 11 and the automatic water supply valve 13 for supplying the water flowing into the water tank 11 under the control of the controller 18. , An overflow hose 15 for discharging water to the outside of the boiler 10 when water is excessively supplied to the water flow detector 14 and the water tank 11 to detect the user's use of hot water. Equipped.

In the boiler 10 of FIG. 1 having such a configuration, the low water level sensor 12 in the water tank 11 detects the low water level of the water tank 11 and transmits it to the controller 18. When the low water level detection signal is transmitted from the low water level sensor 12, the controller 18 supplies the water to the water tank 11 by opening the automatic water supply valve 13 so that a proper level of water is always supplied into the heating pipe. .

Then, when the user opens the faucet valve to use hot water, the water flow sensor 14 detects a flow of water or a change in pressure and transmits a predetermined signal to the controller 18 to start the hot water ignition stroke. The controller 18 ignites the gas burner 17 to combust the supplied gas when the oil / water detection signal is transmitted from the oil / water sensor 14. At this time, the water stored in the water tank 11 is supplied to the heat exchanger 16 through the circulation pump (P) to heat the water flowing into the combustion heat of the gas burner (17). The heated water (hot water) is provided to the user through a hot water supply pipe.

However, when water is continuously supplied from the direct water pipe to the water tank due to a failure of the automatic water supply valve itself in the conventional gas boiler as described above, water is continuously discharged to the overflow hose of the water tank, so that the water is flooded and the water is installed in the boiler space. Waste is generated. In addition, even if the user is not using hot water due to a fault such as a short circuit inside the oil / water detector, if a hot water use signal is generated, unnecessary combustion may occur, and the heat exchanger may be damaged due to repetitive combustion stations, and normal heating stroke may be performed. There is a problem that can not be carried out to the consumer complaints. In addition, the automatic water supply valve and water flow failure can not be detected automatically, there is a hassle to check each one.

Accordingly, an object of the present invention is to solve the above-mentioned problems, the pipe is configured so that the water flows directly into the automatic water supply valve through the water flow sensor and automatically detects the failure of the automatic water supply valve and the water flow sensor using the rising slope of the heating water temperature immediately after ignition. To provide a way to do it.

It is another object of the present invention to provide an apparatus for implementing an automatic water supply valve / water sensor failure automatic detection method of a gas boiler using the above-described heating water temperature.

In order to achieve the above objects, the automatic water supply valve / water detector automatic failure detection method of a gas boiler using the heating water temperature of the present invention is a method for automatically detecting the automatic water supply valve / water flow sensor failure of a gas boiler, ) If the water flow sensor contact point is "ON" while the automatic water supply valve is not driven, starting the hot water ignition stroke, and (2) calculating the heating water temperature rising slope by measuring the heating water temperature immediately after the ignition. And (3) comparing the calculated slope of the heating water temperature immediately after the ignition with the first reference slope, if it is smaller than the first reference slope, determining normal use of hot water, and if it is greater than the first reference slope, (4) an automatic water supply valve if the heating water temperature rise slope immediately after ignition calculated as a result of the comparison of step (3) is smaller than the second reference slope. Determining the copy and, the method comprising: determining a second reference slope is greater than the leading short-circuit failure detector, and (5) if a failure has occurred is determined in the step (4) comprises the steps an alarm so that the user can see.

Automatic water supply valve / water flow detector automatic failure detection device of the gas boiler using the heating water temperature to achieve another object of the present invention, in the failure detection device of the gas boiler, the water flow detector for detecting the use of hot water, and the inside of the gas boiler When the water tank low water level is detected, the automatic water supply valve for supplying the direct water flowing through the water flow sensor to the water tank, the heating water temperature sensor for measuring the heating water temperature, and the overall control of the operation of the gas boiler, And a controller for detecting a failure of the automatic water supply valve and a water flow sensor short circuit by calculating a gradient of heating water temperature immediately after ignition measured by the heating water temperature sensor, wherein the controller includes a failure of the automatic water supply valve or a short circuit of the water flow sensor. In case of failure, hot water ignition is carried out despite not using hot water, Since the action does not occur, the heating water temperature immediately after the ignition is rapidly increased compared to the maximum heating water temperature rising slope, and is characterized by automatically detecting a failure.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a schematic configuration diagram showing a configuration of a gas boiler to which the present invention is applied. The gas boiler 20 shown in FIG. 2 is configured in the same manner as the conventional gas boiler of FIG. 1, and is configured such that direct water flows into the automatic water supply valve 22 only through the oil / water detector 21. The heating water temperature sensor 23 is provided on the water transfer pipe that is the outlet side of the heat exchanger 16 to measure the outlet temperature of the heating water. The gas boiler 20 of FIG. 2 also performs overall control of the operation of the boiler 20 as well as the automatic water supply valve 22 and the oil / water detector using the heating water temperature measured by the heating water temperature sensor 23. 21) A failure occurs by connecting to a designated number such as a controller 24 modified to detect a failure, an alarm unit 25 for sounding an alarm when a failure is detected, and an external after-sales service center 30 It is configured to further include a communication unit 26 for notifying. An operation of automatically detecting an automatic water supply valve / water flow sensor failure of the gas boiler of FIG. 2 having such a configuration will be described in detail with reference to FIGS. 3 and 4.

3 is a graph of a heating water temperature rising slope showing a change in the heating water temperature according to the elapsed time after ignition, the horizontal axis represents the elapsed time t after ignition, and the vertical axis represents the heating water temperature measured by the heating water temperature sensor 23 ( T). In Fig. 3, the dotted line graphs "A" and "C" respectively represent the maximum heating water temperature rise slope and the flow sensor short-circuit reference slope, which can be set through experiments.

When the gas boiler 20 is in a normal state, when the consumer uses hot water, the water flow sensor 21 detects this and transmits the signal to the controller 24. The controller 24 starts the hot water ignition stroke according to the detection signal from the water flow detector 21. That is, the controller 24 ignites the gas burner 17 so as to burn the gas introduced thereto to generate combustion heat. The heat exchanger 16 receives the heat of combustion of the gas burner 17 and heats the heating water to send the heated heating water to the hot water supply pipe so that hot water can be used. The controller 24 also refills the water tank 11 by driving the automatic water supply valve 22 when the low water level sensor 12 installed in the water tank 11 detects the low water level. The drive of the water supply valve 22 is stopped. Of course, when the automatic water supply valve 22 is operated, the contact point of the water flow sensor 21 is “ON” so that the flow of water is sensed. In this case, the controller 24 supplies the driving signal of the automatic water supply valve 22. As it is output state, it is distinguished from normal hot water use. Accordingly, the controller 24 does not start the hot water ignition stroke. That is, even if the contact point of the oil / water sensor 21 is “ON”, the controller 24 judges that it is a simple water supplement and does not perform a hot water ignition stroke even when the automatic water supply valve 22 is driven. If it is not driven (22), it is determined that hot water is used to perform hot water ignition stroke.

On the other hand, when the automatic water supply valve 22 is broken, even though the controller 24 does not output the drive signal of the automatic water supply valve 22, water continues to be supplied to the water tank 11. At this time, the contact point of the water flow sensor 21 provided in front of the automatic water supply valve 22 is "ON" to detect the flow of water. When the controller 24 does not drive the automatic water supply valve 22 and the contact point of the water flow sensor 21 is "ON" (step 401), it is judged that the consumer uses hot water and starts the hot water ignition stroke. (Step 402). The controller 24 receives the heating water temperature measured by the heating water temperature sensor 23 and calculates a heating water temperature rising slope dT / dt immediately after ignition (step 403). The controller 24 has a slope of the maximum heating water temperature rise at the minimum flow rate at which the flow sensor 21 operates (see graph “A” in FIG. 3) and a slope based on the flow sensor 21 short circuit (see the graph “C” in FIG. 3). ) Is already entered. The controller 24 determines whether the calculation result is larger than the previously input maximum heating water temperature rising slope A (step 404). As a result of the determination in step 404, if the calculation result is not greater than the input maximum heating water temperature rising slope A, the controller 24 determines that normal hot water is used (step 405). On the contrary, if the calculation result is larger than the previously inputted maximum heating water temperature rising slope A, it is determined whether or not the input water flow detector 21 is shorter than the shorted reference slope C (step 406).

In the case of the failure of the automatic water supply valve 22 or the internal short circuit of the water flow sensor 21, when the controller 24 detects the use of hot water and performs combustion without the actual use of hot water, the heat exchanger 16 may burn. Since the heat exchange action by the hot water does not occur in the heating water temperature of the boiler 20 is rapidly increased immediately after ignition. However, when the automatic water supply valve 22 is broken, since water is continuously supplied to the water tank 11 and circulation in the boiler 20 is continued by the circulation pump P, a small amount of heat exchange action occurs. When the combustion is performed by a short circuit of the water flow detector 21, it can be said that no heat exchange action occurs at all except for negligible natural heat radiation. Therefore, when the heating water temperature rising slope (see D graph in FIG. 3) in the case of a short circuit failure of the water flow sensor 21 is a failure in the heating water temperature rising slope (see B graph in FIG. 3) when the automatic water supply valve 22 is broken. It becomes larger than that. By using this fact, if the heating water temperature rise slope immediately after ignition (dT / dt) is greater than the maximum heating water temperature rise slope at the minimum flow rate, the process of comparing the flow rate with the water flow detector (21) short-circuit reference again is added. 22) It is possible to distinguish between a fault and a water flow detector 21 short circuit fault.

If the calculation result in step 406 is not greater than the flow sensor short-term reference slope (see graph “C” in FIG. 3), that is, the calculated heating water temperature rise slope is greater than the maximum heating water temperature rise slope (A) as shown in FIG. 3. If the water flow detector 21 is smaller than the short-term reference slope C, the controller 24 determines that the automatic water supply valve 22 has failed (step 407). If the result of the calculation in step 406 is greater than the flow detector short reference slope (see graph “C” in FIG. 3), the controller 24 determines that the flow detector 21 is short-circuited (step 408). If it is determined that the short circuit failure of the automatic water supply valve 22 or the water flow sensor 21 is detected, the controller 24 drives the alarm unit 25 so as to inform the consumer (step 409). Then, the controller 24 communicates with the designated number such as the boiler A / S center 30 and the Internet through the communication unit 26 to notify the short circuit failure of the automatic water supply valve 22 and the water flow detector 21. (Step 410).

The A / S center 30 is notified of the occurrence of a short circuit failure of the automatic water supply valve 22 and the water flow detector 21 from the boiler 20 side, so that the customer can know where the failure occurred before applying for after-sales service. A / S process correctly.

As described above, the automatic water supply valve / water flow sensor failure detection method and apparatus of the gas boiler using the heating water temperature of the present invention, the heat exchange action does not occur when the ignition due to the automatic water supply valve or water flow sensor failure does not heat the boiler By automatically detecting the failure of the automatic water supply valve and the flow sensor by using the point that the water temperature rises immediately after the ignition, the water in the water tank overflows due to the failure of the automatic water supply valve, and the heat exchanger is burned down to a repetitive combustion station or the normal heating It has the effect of quickly coping with the problem of not performing the administration.

Claims (9)

A method for automatically detecting a gas water boiler automatic water supply valve / water detector failure, (1) initiating a hot water ignition stroke when the water flow sensor contact is "ON" without driving the automatic water supply valve; (2) calculating a heating water temperature rising slope by measuring the heating water temperature immediately after ignition; (3) comparing the calculated slope of the heating water temperature immediately after the ignition with the first reference slope, and determining that normal hot water use is less than the first reference slope, and comparing the second reference slope with the first reference slope; (4) If the gradient of heating water temperature immediately after ignition calculated as a result of the comparison of step (3) is smaller than the second reference slope, it is determined as an automatic water supply valve failure; step; And (5) Automatic detection of water supply valve / water flow sensor failure of the gas boiler using a heating water temperature comprising the step of sounding an alarm so that the user knows when the failure is determined in step (4). The method of claim 1, further comprising the step (6) of notifying the after-sales service of the failure through the communication connection. The slope of claim 1 or 2, wherein the first reference slope of step (3) is the maximum heating water temperature rise slope at the minimum flow rate at which the flow sensor is operated, The second reference slope is an automatic water supply valve / water flow sensor failure detection method of the gas boiler using a heating water temperature, characterized in that the water flow sensor short reference slope. [3] The gas boiler according to claim 1 or 2, wherein the step (1) is determined as a water replenishment when the water flow sensor contact point is “ON” while the automatic water supply valve is driven. Automatic detection of water supply valve / oil detector failure In the failure detection device of the gas boiler, Flow sensor to detect the use of hot water; An automatic water supply valve for supplying direct water flowing through the water flow detector to the water tank when the water tank low level in the gas boiler is detected; A heating water temperature sensor for measuring heating water temperature; And A controller for performing overall control of the gas boiler operation, and detecting a short circuit failure of the automatic water supply valve and a water sensor by calculating a gradient of heating water temperature immediately after ignition measured by the heating water temperature sensor; The controller When the automatic water supply valve malfunctions or the short-circuit of the oil and water reservoir, the hot water ignition is performed despite the fact that the hot water is not used, and the heat exchange action does not occur because of this. Automatic water supply valve / water sensor failure automatic detection device for a gas boiler using a heating water temperature, characterized in that the automatic detection of the failure. [6] The automatic water supply valve / water detector failure automatic detection device of a gas boiler according to claim 5, further comprising an alarm unit for sounding an alarm when a failure is detected by the controller. The gas boiler using a heating water temperature according to claim 5 or 6, further comprising a communication unit for notifying the occurrence of an automatic water supply valve and water flow sensor failure by communicating with the A / S center when detecting a failure in the controller. Automatic water supply valve / water flow sensor failure automatic detection device. 6. The automatic water supply valve / water detector failure of the gas boiler using the heating water temperature according to claim 5, wherein the controller determines that the automatic water supply valve is malfunctioning if the heating water temperature rising slope immediately after ignition is greater than the maximum heating water temperature rising slope. Automatic detection device. 6. The automatic water supply valve / flow of the gas boiler according to claim 5, wherein the controller determines that an internal short circuit failure of the oil / water detector is set when the heating water temperature rising slope immediately after the ignition is greater than the oil / water sensor short circuit reference slope. Automatic detector fault detection.

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