JP3897680B2 - Hot water supply equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hot water supply device having a petroleum burner or the like, and more particularly to a hot water supply device capable of grasping a failure history or the like.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as shown in Patent Document 1, a hot water supply apparatus having a petroleum-type burner burns fuel such as kerosene supplied from a fuel tank with a burner and heats water in a can body, thereby heating hot water at a predetermined temperature. Is configured to get. When an abnormality occurs in this hot water supply device, the abnormality occurrence phenomenon can be grasped by displaying a number corresponding to the abnormality on a display unit such as a remote controller based on an abnormality detection signal from various sensors. Has been.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-98406
[Problems to be solved by the invention]
However, in such a hot water supply apparatus, although the occurrence phenomenon of an abnormality such as a burner abnormality or a water supply abnormality can be grasped by the number displayed on the display unit of the remote controller, for example, in the case of a burner abnormality, It is difficult to immediately identify which part of the burner is abnormal, that is, the failure part. Therefore, it is necessary to inspect all parts of the electromagnetic pump, burner body, etc. that are related to the burner abnormality at the time of repair, and it takes time to repair, and it is difficult to quickly and accurately respond to the occurrence of an abnormality. have.
[0005]
The present invention has been made in view of such circumstances, and its purpose is to be able to store various sensing data and the like every predetermined time, and easily identify a failure site when an abnormality occurs in the device, etc. It is to provide a hot water supply device that can be accurately performed.
[0006]
[Means for Solving the Problems]
In order to achieve such an object, the invention according to claim 1 of the present invention includes a can body to which a water supply pipe and a hot water supply pipe are connected, a burner for heating the can body, a command value during the burner operation, and Or a hot water supply device comprising data acquisition means for acquiring data consisting of detection signals of various sensors, and control means for controlling various actuators to bring the burner into a predetermined operation state by having a remote controller. The control unit stores the data acquired by the data acquisition unit in the storage unit as saved data every predetermined time and occurs when an abnormality of the device is detected by the detection signal of the data acquisition unit The number corresponding to the abnormality and the latest saved data stored in the storage unit are displayed on the display unit of the remote controller .
[0007]
With this configuration, detection signals from various sensors such as the water temperature and flow rate of the water supply pipe, or command values such as on / off of the burner electromagnetic pump and current value of the frame rod are sequentially acquired by the data acquisition means. The acquired data is stored in the storage unit as saved data every predetermined time by the control means. Then, for example, when an abnormality of the apparatus of ignition miss such burner occurs, the abnormality occurs in the latest stored data is read out which is stored before the number and abnormality corresponding display on the display unit of the remote control Is done. By this display, the history of each part at the time of occurrence of an abnormality can be grasped, so that the faulty part can be identified easily and with high accuracy without using a dedicated measuring instrument or the like.
[0009]
Further, as in the invention described in claim 2 , the control means includes a volatile memory element and a nonvolatile memory element, stores the stored data in the volatile memory element, and stores the stored data. It is preferable that data is transferred to a nonvolatile memory element and stored when an abnormality of the device is detected . With this configuration, the storage data is temporarily stored in the volatile storage element, and the storage data to be displayed is stored in the nonvolatile storage element, so that both storage elements can be effectively used. At the same time, for example, stored data when an abnormality occurs in the device is securely stored in the nonvolatile storage element for a long period of time.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 4 show an embodiment of a hot water supply apparatus according to the present invention, FIG. 1 is a schematic configuration diagram thereof, FIG. 2 is a block diagram thereof, FIG. 3 is a front view of a remote controller, and FIGS. It is a flowchart which shows an example.
[0012]
In FIG. 1, a hot water supply device 1 has a can body 2 for storing hot water and a burner 3 for heating the can body 2. The can body 2 has a water supply pipe 4 having a three-way valve 6 for supplying water to the can body 2 and a hot water supply pipe 5 having a three-way valve 7 for supplying hot water in the can body 2 to a faucet (not shown). It is connected. The can body 2 is provided with a hot water sensor 8 for detecting the temperature of hot water and a can body sensor 9 for detecting the temperature of the can body 2, and the water supply pipe 4 has a temperature of water in the pipe 4. A water temperature sensor 10 for detecting, a pressure sensor 11 (see FIG. 2) for detecting the pressure in the water supply pipe 4, a flow rate sensor 12 for detecting the flow rate, and the like are arranged.
[0013]
The hot water sensor 8, can sensor 9 and water temperature sensor 10 are formed of, for example, a thermistor type temperature sensor, the pressure sensor 11 is a diaphragm type pressure sensor, and the flow rate sensor 12 is formed of, for example, a float type flow rate sensor. Has been. These sensors 8 to 12 are connected to the input side of the microcomputer 13, and the three-way valves 6 and 7 are connected to the output side of the microcomputer 13 and the electromagnetic pump 14 of the burner 3 is connected to the output side of the microcomputer 13. Has been. For example, a fuel tank 15 arranged separately from the hot water supply device 1 is connected to the electromagnetic pump 14 by a fuel supply pipe 16.
[0014]
As shown in the block diagram of FIG. 2, the hot water supply device 1 includes a control unit 18 formed by the microcomputer 13 and a remote controller 17 or the like connected to the microcomputer 13 by wire (or wirelessly). Inside, an input / output unit 19, an arithmetic unit 20, and a volatile storage element 21 as a storage unit are provided. Further, a nonvolatile storage element 22 such as an EEPROM, a hard disk (HDD), or a memory card is connected between the input / output unit 19 and the volatile storage element 21 of the microcomputer 13. Data stored in the volatile memory element 21 is transferred and stored in the nonvolatile memory element 22.
[0015]
A sensor group 23 including the sensors 8 to 12 is connected to the input side of the input / output unit 19, and the electromagnetic pump 14 of the burner 3 and its fan motor are connected to the output side of the input / output unit 19. 24, an actuator group 25 including the three-way valves 6 and 7 is connected. The actuator group 25 is controlled by the control means 17 based on the detection signal input from the sensor group 23, and the data acquisition means for acquiring the detection signal and the command value by the sensor group 23 and the microcomputer 13. Is configured.
[0016]
The remote controller 17 includes an operation unit 26 and a display unit 27, and is formed as shown in FIG. 3, for example. That is, the operation unit 26 includes a call switch 28 for sounding a buzzer in the kitchen, a side switch 29 with a lamp for chasing each predetermined temperature, and a priority switch 30 with a lamp for setting the bathroom temperature other than the bathroom remote controller 17. , And an automatic switch 31 with a lamp that enables automatic reservation operation. Further, the operation unit 26 is covered with a lid 32, and a hot water supply temperature adjustment switch 33 for setting the temperature of hot water to be supplied, a bath water level setting switch 34 for setting a water level to be applied to the bathtub, hot water in the bathtub There are provided a bath temperature adjustment switch 35 for setting the temperature, an operation switch 36 for operating / stopping, and the like.
[0017]
The display unit 27 is formed of, for example, a fluorescent display tube, and includes a hot water supply temperature display unit 37 including a number of horizontal display devices that display a reference value temperature of hot water supply, a time display unit 38 that displays time, and a setting. Flow temperature setting display section 39 for digitally displaying the boiling temperature of the hot water supply, tracking display section 40 composed of a plurality of indicators for displaying the tracking status, and at the time of priority, burner 3 combustion, or reservation Various indicator lights that are turned on are provided. The remote controller 17 having the operation unit 26 and the display unit 27 is attached to a wall panel outside the entrance door of the bathroom and used as a remote control outside the bathroom, or attached to a wall panel near the bathtub in the bathroom. And used as a remote control in the bathroom.
[0018]
Next, an example of operation | movement of the said hot water supply apparatus 1 is demonstrated based on the flowchart of FIG.4 and FIG.5. Each flowchart is automatically executed according to a program stored in advance in the microcomputer 17. First, as shown in FIG. 4, when the operation switch 36 of the hot water supply device 1 is turned on, the program is started (S100), and the combustion calculation routine (S101) of the burner 3 is entered. Is input to the input / output unit 19 (S102), and the fuel consumption is calculated by the calculation unit 20 of the microcomputer 13 based on the read data (S103).
[0019]
When the fuel consumption is calculated in step S103, a command signal is output (S104) to the actuator group 25 such as the electromagnetic pump 14 and the fan motor 24 so that this fuel consumption is obtained, and the burner 3 burns in a predetermined state. Then, it is determined whether or not it is the storage timing of various detection signals from the sensor group 23 set in advance and command values to the actuators constituting the burner 3 (hereinafter referred to as storage data) (S105). As the storage timing, a fixed time is adopted, and the stored data is temporarily stored in the volatile memory element 21 of the microcomputer 13, so that a decrease in reliability due to constant writing of the nonvolatile memory element 22 is prevented. ing.
[0020]
The stored data detection signal includes the flow rate detected by the flow rate sensor 12, the hot water sensor 8, the can sensor 9, the water temperature sensor 10, or the thermistor resistance value of each sensor such as a tracking temperature sensor (not shown) or an air temperature sensor. The output voltage of the pressure sensor 11 is used, and the state of the antifreeze switch, the state of the pressure switch, the state of the seismic device, the state of the burner high limit, the state of the burner high limit, the oil sensor of the fuel tank 15 and the float switch are all used. A state etc. are used as needed. Further, as the characteristic value of the stored data, a current value of a frame rod (not shown) of the burner 3, the rotational speed of the fan motor 24, a fuel consumption command value from the microcomputer 13, a fan motor rotational speed command value, and the like are used.
[0021]
If “YES” in the determination S105, that is, if it is time to save the saved data in the volatile memory element 21 in the microcomputer 13, the saved data is stored in the volatile memory element 21 (S106). On the other hand, if “NO” in the determination S105 or when the step S106 is executed, it is determined whether or not it is a transfer timing of the stored data (S107). As the transfer timing, as will be described later, when an abnormality occurs or when a manual operation is performed by a predetermined switch operation, or when a power supply is interrupted such as a power failure of a main power source due to operation of a seismic device or lightning strike, etc. are employed.
[0022]
If “YES” in the determination S107, that is, if stored data for a predetermined time is stored in the volatile storage element 21 in the microcomputer 13, the stored data is transferred to the nonvolatile storage element 22 and It memorize | stores in the non-volatile memory element 22 (S108). If “NO” in the determination S107, that is, if the storage data for a predetermined time is not stored in the volatile storage element 21 and it is not necessary to transfer the storage data, and the nonvolatile storage element 22 in the step S108. If the saved data is transferred / stored, it is determined whether the operation switch 36 is turned off and the combustion calculation routine is completed (S109). If “NO” in the determination S109, the process returns to the step S101, and if “YES” in the determination S109, the series of programs ends (S110).
[0023]
FIG. 5 is a flowchart showing a display routine for the stored data stored every predetermined time as described above. In this display routine, when the program is started (S200) and the display routine is entered (S201), it is first determined whether or not the sensor group 23 has detected an abnormality (S202). If “YES” in this determination S202, that is, if an abnormality in an ignition error occurs in the burner 3, for example, an abnormality signal corresponding to the abnormality is input to the microcomputer 13, and the microcomputer 13 operates the electromagnetic pump 14, for example. Stop processing (S203) such as stopping and stopping the fan motor 24 after a predetermined time is executed.
[0024]
In addition, when the ignition mistake of the burner 3 is detected by judgment S202, flame | frame current value, a fan motor rotation speed command value, a fan motor rotation speed, a fuel consumption command value etc. are preserve | saved as save data at time series, and ignition is carried out. The cause of the mistake can be easily identified. In the case of occurrence of an abnormality in the fully automatic system, it is possible to identify a failure site by verifying the output of the pressure sensor 11 in time series.
[0025]
By the stop process S203, the burner 3 is brought into a stopped state to ensure safety, and after the stop process or in parallel with the stop process, the burner 3 is stored in the nonvolatile memory element 22 when an abnormal signal is input. The latest stored data is read (S204), the read stored data is displayed on the display unit 27 of the remote controller 17 (S205), and then the program is terminated (S206).
[0026]
As the display in step S205, for example, as shown in FIG. 3, the amount of stored data displayed on the hot water supply temperature display unit 37 of the display unit 27 of the remote controller 17 depends on the display position of the plurality of LEDs. Display the time data. That is, for example, when the left end indicator of the hot water supply temperature display unit 37 arranged in the horizontal direction is lit, it indicates that the data one minute before the transfer is displayed, and the right end of the hot water supply temperature display unit 37 is displayed. If it is, the data 7 minutes before the transfer is displayed.
[0027]
On the tracking display section 40 of the display section 27, the on / off state of data is displayed by the plurality of displays, and the values of various data are displayed on the bath temperature setting display section 39 of the display section 27. Display in decimal or decimal. These displays are displayed by, for example, two continuous operations of the automatic switch 31 that is a display switch of the remote controller 17 (a normal automatic driving function in the case of a single operation). For example, a dedicated operation switch is provided. Of course, the time of the display data can be advanced or retroactively displayed by operating the automatic switch 31.
[0028]
On the other hand, if “NO” in the determination S202, that is, if no abnormality is detected by the sensor group 23, it is determined whether or not the display operation switch is turned on (in this example, the automatic switch 31 is operated twice consecutively). (S206). If “YES” in this determination S206, that is, if a predetermined operation switch for reading stored data is turned on, the latest storage stored in the non-volatile storage element 21 is performed as in steps S204 and S205. The data is read (S207), and the read saved data is displayed at a predetermined position on the display unit 27 of the remote controller 17 (S208) as described above. Thereafter, it is determined whether or not the operation switch 36 is turned off (S209), and when the determination becomes "YES" in this determination S209, the program is terminated (S210).
[0029]
By the way, as a case where the manual operation in the determination S206 is used, for example, there is a case of a problem in which no abnormality is detected. That is, for example, when the hot water supply temperature is less than the set temperature, abnormality detection is not performed. In such a case, when the operation switch is manually turned on, the thermistor resistance value of the sensor group 23 transferred and stored in the nonvolatile memory element 22 is detected. The defective part is specified by verifying the state of the flow sensor 12, the fan motor rotation speed command value, the fuel consumption command value, and the like in time series.
[0030]
In this flowchart, the case where reading and display of stored data from the nonvolatile memory element 22 is performed at the time of abnormality detection and at the time of operation of the operation switch (at the time of manual operation) has been described. For example, in the case of abnormality detection It is also possible to use a flow for reading and displaying only, or a flow for reading and displaying when the power is shut off for some reason. Reading and displaying of stored data when the power is shut off is performed by, for example, a backup power source.
[0031]
Thus, in the hot water supply device 1 of the above embodiment, the control unit 18 stores the volatile storage element 21 in which the storage data is stored every predetermined time, and the storage temporarily stored in the volatile storage element 21. It has a nonvolatile memory element 22 to which data is transferred and saved, and the latest saved data among the saved data stored in the nonvolatile memory element 22 is read and displayed, for example, when an abnormality occurs. For this reason, this display makes it possible to easily identify the failed part of the hot water supply device 1 and to improve the efficiency of the repair work, for example, to shorten the repair work time.
[0032]
In particular, since the stored data can be displayed simultaneously (or alternately) with the number at the time of occurrence of an abnormality displayed on the display unit 27 of the remote controller 17, the failure part can be identified by associating the number with the stored data. At the same time, since the predetermined data is stored when the abnormality is detected, the failure site can be identified by sensing data stored at the time of occurrence of the abnormality even with low reproducibility data.
[0033]
Further, even in a state where no abnormality is detected, the stored data can be transferred and stored manually in the nonvolatile memory element 22, so that a defect in which no abnormality is detected by the sensor group 23 can be detected based on the stored data. Can be specified. Furthermore, since the sensing data itself of the microcomputer 13 can be verified, it is possible to identify a faulty part that could not be done at a conventional repair site, such as a communication abnormality between the sensor group 23 and the microcomputer 13. In addition, it is possible to more quickly and accurately identify a failure site or the like when a problem occurs.
[0034]
Further, since the stored data can be displayed on the display unit 27 of the remote controller 17 provided separately from the main body of the hot water supply device 1, the remote controller 17 itself can be used in place of the tester without using a dedicated tester for failure diagnosis. However, it is possible to identify the faulty part and improve the workability of the repair work. For example, repair and maintenance work can be performed more efficiently. Further, since storage of storage data is performed by the volatile storage element 21 and storage of storage data transferred and displayed from the volatile storage element 21 is performed by the nonvolatile storage element 22, both storages are becoming cheaper. The elements 21 and 22 can be used effectively and, for example, data stored when an abnormality occurs can be stably stored in the nonvolatile memory element 22 for a long period of time. As a result, maintenance and repair costs can be reduced. Is possible.
[0035]
Furthermore, the storage timing of the storage data temporarily stored in the volatile storage element 21 in the microcomputer 13 is sufficiently longer than the program execution cycle of the microcomputer 13 and does not affect the data accuracy of the storage data ( Since it is set to a length that does not adversely affect, for example, it is not necessary to store stored data for each execution cycle, the burden on the microcomputer 13 can be reduced, and the reliability of the storage elements 21 and 22 by constant writing is reduced. A decrease can be prevented.
[0036]
6 and 7 are front views showing other examples of the remote controller 17, and the same parts as those in the above example will be described with the same reference numerals. First, the remote controller 17 shown in FIG. 6 includes a switch 28, a bath temperature adjustment switch 35, a hot water temperature adjustment switch 33, an automatic switch 31, a bath water level setting switch 34, and a switch for warming a predetermined temperature when the hot water is warm. 42 etc. are provided.
[0037]
In addition, the display unit 27 of the remote controller is formed of a dot matrix display 43. For example, when an abnormality occurs, as shown in the figure, the fuel consumption is displayed as a graph G1, and the current value of the frame rod is displayed as a graph G2. The status of burner high limit, seismoscope, pressure switch, float switch, etc. is lit up. In the normal state, the dot matrix display 43 is provided with switches (not shown) such as an operation on switch, an operation off switch, and a mode switch, and a display unit indicating the state.
[0038]
Also in the remote controller 17, for example, the current value of the frame rod can be displayed in a graph on the display unit 27 in the event of an abnormality, and similarly to the remote controller 17 of the above embodiment, the failure site can be easily identified, Since a plurality of stored data can be displayed simultaneously as graphs G1 and G2, the time series relationship can be grasped at a glance, and the effect of being able to more accurately identify the failure site and the failure cause can be obtained.
[0039]
7 includes a hot water supply temperature adjustment switch 33, a hot water supply time setting switch 44, an operation switch 36, and the like in the operation unit 26, and a hot water supply time display unit 45 and a hot water supply temperature display unit 37 in the display unit 27. Etc. are provided. Also in the remote controller 17 of this example, for example, when an abnormality occurs, data can be displayed on the hot water supply time display unit 45 and the time and the like can be displayed on the hot water supply temperature display unit 37, and the same operational effects as in the above embodiment can be obtained. Thus, it is possible to obtain an effect that the configuration of the remote controller 17 itself can be simplified and formed at low cost. Thus, the configuration of the operation unit 26 and the display unit 27 of the remote controller 17 is not limited to the above examples, and an appropriate remote controller 17 having the display unit 27 that can display the state when an abnormality occurs can be used.
[0040]
In addition, this invention is not limited to the said embodiment, The following modifications are included. That is, in the above-described embodiment, the stored data stored in the volatile memory element 21 is transferred to the nonvolatile memory element 22 and stored at regular intervals regardless of whether or not an abnormality has occurred. For example, an abnormality is detected. Only in this case, it is possible to transfer only the stored data for a predetermined time (about 5 minutes) immediately before the occurrence of the abnormality to the nonvolatile memory element 22 and store it.
[0041]
Further, the stored data is displayed on the display unit 27 of the remote controller 17 separate from the hot water supply device 1. However, for example, the stored data is displayed on the display unit of the remote controller such as an operation panel attached to the hot water supply device 1. The nonvolatile storage element 22 (electrical circuit board) of the control means 18 can be taken out when an abnormality occurs, and the stored data stored therein can be displayed in a time series with a dedicated tester. it can. In addition, the stored data can be displayed on the remote controller 17 and a tester at the same time, or the stored data during normal operation can be displayed on the remote controller 17 in real time (real time). Various modifications can be made without departing from the scope of the invention.
[0042]
【The invention's effect】
As described above in detail, according to the first aspect of the present invention, the detection signals and burners of the various sensors acquired by the data acquisition unit and stored in the storage unit by the control unit before the occurrence of the abnormality of the device. Since the latest data of stored data consisting of command values during operation and the number corresponding to device abnormalities are displayed on the display of the remote control, the hot water supply is displayed on the display without using a dedicated measuring instrument. It is possible to easily identify the failure part of the device, and to shorten the repair work time.
[0044]
According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the storage data is stored in the volatile memory element, transferred from the volatile memory element, and displayed. Since the storage data is stored in the non-volatile storage element, both the storage elements can be used effectively, and for example, the storage data when an abnormality occurs in the device can be securely stored in the non-volatile storage element for a long period of time.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram showing an embodiment of a hot water supply apparatus according to the present invention. FIG. 2 is a block diagram thereof. FIG. 3 is a front view of the remote controller. [Fig. 6] Front view of another example of the remote controller. [Fig. 7] Front view of still another example of the remote controller. [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Hot water supply apparatus, 2 ... Can body, 3 ... Burner, 4 ... Water supply piping, 5 ... Hot water supply piping, 13 ... Microcomputer, 17 ... Remote control, 18 ... Control means, 19 ... input / output unit, 20 ... calculation unit, 21 ... volatile memory element, 22 ... nonvolatile memory element, 23 ... sensor group, 25 ... actuator group, 26... Operation unit, 27.

Claims (2)

A can body to which a water supply pipe and a hot water supply pipe are connected, a burner for heating the can body, a data acquisition means for acquiring data consisting of command values during the burner operation and detection signals of various sensors, and a remote controller are provided. And a control means for controlling various actuators to bring the burner into a predetermined operation state,
The control means stores the data acquired by the data acquisition means in the storage unit as saved data every predetermined time , and an abnormality that has occurred when an abnormality of the device is detected by a detection signal of the data acquisition means A hot water supply apparatus , wherein the number corresponding to the number and the latest stored data stored in the storage unit are displayed on the display unit of the remote controller . The control means includes a volatile memory element and a nonvolatile memory element, stores the stored data in the volatile memory element, and stores the stored data in the nonvolatile memory element when an abnormality occurs in the device. The hot-water supply device according to claim 1 , wherein the hot-water supply device is transferred to and stored.

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