JPH109568A - Combustion equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To directly read and display data stored in a RAM and a nonvolatile memory provided in a combustion equipment by an external display unit connected to the equipment. SOLUTION: A remote controller 1 having a data read instructing unit 25 and a data display unit 23 is connected to the combustion equipment 13. A combustion controller 11 of the equipment 13 has a RAM 19 of a memory for storing variable data necessary for controlling, and an electrically writable and erasable EEPROM 20 for storing invariable fundamental data. When a data read command for designating an address is added from the unit 25, in which of the RAM 19 and the EEPROM 20 the designated data is stored is judged by a switch change-over read means 21, a reading route is switched to a memory of a read command data storage side, the data is read, the read data is transferred to the controller 1 by a data transfer unit 22, and displayed by the unit 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion device such as a water heater or a bath kettle.

[0002]

2. Description of the Related Art Conventionally, various types of combustion equipment such as a water heater and a bath kettle have been used. FIG. 3 shows a composite water heater having a hot water supply burner 3 and a bath burner 4 as an example of the combustion equipment. Is shown in a schematic diagram. In this combined water heater, when the water supplied through the water supply pipe 9 passes through the hot water supply heat exchanger 5, it is heated by the hot water supply burner 3 to become hot water, and is discharged from the hot water supply pipe 10 to perform hot water supply. Also, by opening the pouring valve 8, the hot water supply heat exchanger 5
The hot water heated by the heater is poured into the bathtub 1 via the reheating circuit 2. By driving the circulation pump 7, the hot and cold water in the bathtub 1 is reheated and the circulation path 2 is heated.
At this time, the hot water passing through the reheating heat exchanger 6 is heated by the bath burner 4 to reheat the bath.

[0003] Although not shown in the figure, the water heater has a flow rate sensor for detecting the flow rate of supplied water, an incoming water temperature sensor for detecting the temperature of supplied water, and a hot water outlet. Various sensors such as a tap water temperature sensor for detecting the temperature of hot water and a bath temperature sensor for detecting the temperature of hot water in a bathtub are provided.

[0004] This type of combustion equipment is provided with a combustion control device 11 for performing a combustion operation control. The combustion control device 11 has a RAM (random access memory) for storing variable data necessary for control. Memory) is provided. R
As is well known, the AM is a memory from which data and the like can be read and written freely. For example, data detected by each of the sensors such as an incoming water temperature sensor is stored in an address (address) predetermined for each data. Store. Since these sensor data changes every moment, each data stored in the RAM is rewritten every moment. In general, the data stored in the RAM is automatically deleted when the power of the combustion equipment is turned off.

[0005] A remote control 12 is connected to the combustion control device 11. The combustion control device 11 receives a command from the remote control 12 and, in accordance with a sequence program given in advance, RA
The combustion operation control is performed by taking in data necessary for the combustion operation control among the variable data stored in M.

By the way, in order to detect various abnormalities such as the combustion control by the combustion control device 11, for example, the detection information of each sensor, that is, the sensor data stored in the RAM is read out and displayed by the remote controller 12. For example, Japanese Unexamined Patent Publication No. 3-271621 proposes a state display device for a combustion device. This proposed device uses a status display device equipped with a microcomputer such as a remote controller 12 to externally address data provided to the RAM and read and display the data. A read command specifying an address from a display device is applied to the combustion apparatus, and RAM data is displayed on the status display device, and data of the specified RAM address is simultaneously displayed.

According to the proposed device, desired data can be read out and displayed by specifying an address, and by displaying the address simultaneously with the display of this data, for example, the state transition of the sequence of the combustion equipment Can be known in real time, and abnormalities of the combustion equipment can be easily detected.

[0008]

However, in recent combustion equipment, in addition to the RAM, the combustion control device 11 has an EEPROM (Electrical Erasable / Programmable).
e Read Only Memory), and electrically writable and erasable non-volatile memory is provided. In this non-volatile memory, invariant basic data (for example, as shown in FIG. Data such as the cross-sectional area of the bathtub 1 in the combined water heater and a reference water level serving as a reference during the filling operation. The combustion control device 11 uses the basic data and the variable data stored in the RAM. Combustion operation control has been performed.

In such an apparatus, RA
It is desirable that not only the data stored in the memory M but also the data stored in a non-volatile memory such as an EEPROM be read out and displayed by specifying an external address so that abnormality detection of the combustion equipment can be performed. However, there has not yet been proposed a combustion apparatus that can read and display data in a non-volatile memory according to designation from an external display device.

If all data stored in the non-volatile memory is input into the RAM and the data is read out and displayed when a command is given from the external display device, the non-volatile memory can be used. It is thought that it is possible to read and display the data stored in
In order to do this, the memory capacity of the RAM must be increased by an amount that can store all the basic data in the nonvolatile memory, which leads to an increase in the cost of the combustion equipment, which is a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide an RA provided in a combustion apparatus.
It is an object of the present invention to provide a low-cost combustion apparatus that can freely read and display data stored in the nonvolatile memory and the nonvolatile memory in response to an external data read command.

[0012]

Means for Solving the Problems To achieve the above object, the present invention provides means for solving the problems by the following constitution. That is, the present invention relates to a combustion apparatus in which an external display device including a data read command unit that outputs a data read command to a combustion control device and a display unit that displays read data is connected. The combustion control device includes a RAM of a memory for storing variable data necessary for control, a nonvolatile memory for storing invariable basic data, which can be electrically written and erased, and an external display device having an address specified. In response to a data read command from the CPU, the CPU determines whether the commanded data is stored in the RAM or the non-volatile memory, reads the read path, switches to the memory on the command data storage side, and reads the data at the commanded address Switch switching reading means, and a data transfer unit for transferring the read data to an external display device. It is configured as characterized in that there.

In the present invention having the above-described structure, in response to a data read command from the external display device designated by an address, the command data is read by the switch switching read means into the RAM and the nonvolatile memory provided in the combustion equipment. A determination is made as to which is stored, the read path is switched to the memory on the read command data storage side, and the data at the specified address is read. Then, the read data is transferred to the external display device by the data transfer unit, and the data is displayed on the display unit of the external display device.

As described above, according to the present invention, the switch switching readout means determines whether the instructed data is stored in the RAM or the nonvolatile memory, and reads out the data based on the determination. Since the path is switched and the data at the designated address is read, not only the data stored in the RAM but also the data stored in the non-
This makes it possible to read out directly by the switch changeover reading means without going through the M, and the above-mentioned problem is solved without increasing the cost of the combustion equipment.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. In the description of the present embodiment, the same reference numerals are given to the same parts as those in the conventional example, and the duplicated description is omitted. FIG. 1 shows a configuration of a main part of a control unit of a combustion apparatus according to an embodiment of the present invention in a state where it is connected to a remote controller 12. The combustion equipment 13 of the present embodiment is applied to various combustion equipment such as a combined water heater having a system configuration shown in FIG. 3, a single combustion water heater, a bath pot, and the like.

As shown in FIG. 1, the combustion apparatus 13 of this embodiment includes various sensors required for combustion control, such as an incoming water temperature sensor, and combustion control for performing combustion operation control based on the sensor information. A device 11 is provided, and the combustion control device 11 is provided.
Is a sequence control unit 18, a RAM 19, an EEPROM 20,
It has a switch switching reading means 21 and a data transfer section 22. Further, the remote controller 12 is provided with a data display unit 23, a register 24, and a data read command unit 25.

In this embodiment, the remote controller 12 is
It also functions as an external display device.
The data read command unit 25 provided in the CPU 1 outputs a data read command specifying an address.

The RAM 19 is a memory for storing variable data necessary for combustion control, like the conventional combustion equipment, and stores information from various sensors every moment. EEPR
The OM 20 functions as a non-volatile memory for storing invariant basic data. For example, when shipping or installing a combustion device, basic data that is substantially determined in advance by the device is input, and this data is stored. Have been.

The sequence control unit 18 converts variable data such as sensor data stored in the RAM 19 and invariable basic data stored in the EEPROM 20 into data necessary for control according to a sequence program given in advance. It reads out and controls the combustion operation of the combustion equipment.

The switch change reading means 21 receives a data read command specifying an address from the data read command section 25 of the remote controller 12 and determines which of the RAM 19 and the EEPROM 20 stores the specified data. The read path is switched to the memory on the read command data storage side to read the data at the commanded address.

The data commanded by the data read command unit 25 is stored in the
Reference data corresponding to the data read command for determining which of the M19 and the EEPROM 20 is stored is given in advance, and the switch switching read means 21 receives the data read command from the data read command unit 25. Then, the judgment is made with reference to the data read command and the reference data. Then, the read path is switched as described above, and the data of the commanded address and the data address are read and added to the data transfer unit 22.

The data transfer section 22 transfers the data read by the switch switching reading means 21 to the remote controller 12. In the present embodiment, the data is serially transferred to the register 24 of the remote controller 12. I do.

The register 24 converts the serially transferred data signal into a parallel signal and applies it to the data display unit 23.
The data display unit 23 is a display unit that displays data that has been read in accordance with a command from the data read command unit 25,
The data is displayed by displaying the parallel signal applied via the register 24. In addition, at the time of this display,
The address display may be performed together.

The present embodiment is configured as described above. In the combustion apparatus 13 of the present embodiment, for example, FIG.
In step 101, the data read command section of the remote controller 12
When a data read command designating an address is output from 25, at step 102, the switch data is read by the switch switching read means 21 into the RAM 19 and the EE.
A determination as to which of the PROMs 20 is stored is made based on the reference data.

The instructed data is stored in the RAM 19
If it is determined that the information is stored in
In step A, the read path is switched to the RAM 19 side, and in step 104A, the data at the commanded address is stored in the RAM 19.
Is read from. On the other hand, if it is determined in step 102 that the command data is stored in the EEPROM 20 by the switch switching reading means 21, in step 103B, the read path is changed to the EEPROM.
The data is switched to the 20 side, and at step 104B, the data at the commanded address is read from the EEPROM 20.

Then, in this manner, the RAM 19 and the EE
The data read from any of the PROMs 20 is transferred to the remote controller 12 by the data transfer unit 22 at step 105, and is added to the data display unit 23 via the register 24.
In step 106, data display is performed by the data display unit 23.

According to this embodiment, by the above operation,
Even when the data commanded by the data read command unit 25 to the remote controller 12 is stored in the RAM 19,
Even when the data is stored in the ROM 20, any data at the commanded address can be read and transferred to the remote controller 12, so that the desired data stored in the RAM 19 or the EEPROM 20 is stored by the data read command of the remote controller 12. Readout display can be performed.

According to this embodiment, the data is stored in, for example, the EEPROM 20 in order to read the data at the commanded address by switching the data reading path by the switch switching reading means 21 by the above operation. All data is input to the RAM 19, and R
Unlike the configuration in which the data in the EEPROM 20 is read out via the AM 19, the memory capacity of the RAM 19 does not need to be increased, and the increase in the memory capacity of the RAM 19 does not increase the cost of the combustion equipment 13 and reduces the cost. Cheap combustion equipment.

The present invention is not limited to the above-described embodiment, but can adopt various embodiments. For example, in the above-described embodiment, the remote controller 12 is connected to the combustion device 13 as an external display device that issues a data read command and data display. However, the external display device is not necessarily the remote control 12, and for example, the combustion device 13 May be an external display device, and this device may be connected by a lead wire or the like.

In the above-described embodiment, the EEPROM 20 is provided as the nonvolatile memory. However, the nonvolatile memory is not always the EEPROM 20, and any nonvolatile memory that can be electrically written and erased may be used.
For example, a flash memory or the like may be used.

Further, in the above embodiment, the remote controller 12
However, as shown by the broken line in FIG. 1, the register 24 may be provided on the combustion device 13 side.

Further, in the above-described embodiment, the combined water heater having the system configuration shown in FIG. 3 has been described as an example of the combustion equipment. However, the combustion equipment of the present invention is not limited to a water heater or a bath kettle. The system configuration is not particularly limited, and is appropriately set. And RAM19 and EEPROM20
The data stored and stored in is set appropriately by the combustion equipment.

[0033]

According to the present invention, when a data read command is given from an external display device that specifies an address, the command data is stored in either a RAM or a non-volatile memory provided in the combustion equipment. Switch readout means for judging whether the data is stored in the memory, switching the readout path to the readout instruction data storage side memory and reading out the data of the instructed address, and further transmitting the readout data to the external display device. Since the data is transferred, whether the instructed data is stored in the RAM or the non-volatile memory, in either case, the data is directly transferred by switching the read path by the switch switching reading means. Data can be read and transferred to an external display device for display.

[0034] Therefore, the combustion apparatus of the present invention can be a combustion apparatus capable of freely reading and displaying desired data stored in the RAM and the non-volatile memory by the external display device.

According to the present invention, as described above, RA
Since the data stored in the nonvolatile memory and the data stored in the nonvolatile memory can be directly read out by the switch switching readout means, for example, all the data stored in the nonvolatile memory is once input to the RAM side and read out via the RAM. As in the case, it is not necessary to increase the memory capacity of the RAM, and it is possible to suppress an increase in cost due to the increase in the memory capacity.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a main part of a control unit of an embodiment of a combustion apparatus according to the present invention, together with a remote controller connected to the combustion apparatus.

FIG. 2 is a flowchart illustrating a data read operation of the embodiment.

FIG. 3 is a schematic diagram showing an example of a system configuration of a general combined water heater as a combustion device.

[Explanation of symbols]

 11 Combustion control device 19 RAM 20 EEPROM 21 Switch switching reading means 22 Data transfer unit 23 Data display unit 25 Data read command unit

Claims (1)

[Claims] 1. A combustion apparatus to which an external display device including a data read command unit for outputting a data read command to a combustion control device and a display unit for displaying read data is connected. The control device includes a RAM of a memory for storing variable data necessary for control, a nonvolatile memory for storing invariable basic data, which is electrically writable and erasable, and an external display device having specified addresses. A switch for reading the data at the commanded address by determining whether the commanded data is stored in the RAM or the non-volatile memory in response to the data read command, and switching the read path to the memory on the command data storage side Switching read means, and a data transfer unit for transferring the read data to an external display device. And a combustion device.