JP3536626B2 - Water heater control base - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a control base for a water heater mounted on a gas water heater or the like.

[0002]

2. Description of the Related Art Conventionally, in a gas water heater, a water heater with a bath reheating function, and other water heaters, a nonvolatile rewritable memory (for example, an EEPROM of an electric equipment base) is provided as one of the memories on a control base thereof. Some have been used. This EEPROM stores setting data (data of a dip switch) such as system settings such as a model and user settings, and when it is necessary to replace a control board, control is performed by means shown in FIG. The replacement work of the base was performed. That is, FIG. 3 is an explanatory diagram for explaining the transfer of the setting data between the control bases. The connection between the new control base 1 for the after-sales service and the old control base 2 by the remote control line 3 enables the setting. Try to transfer data.

[0003]

However, when the control board is replaced in the after-sales service as described above, if the setting of combustion-related data is changed in the old control board 2,
The new control board 1 supplements the combustion related data of the old control board 2.
If it is the basis of a positively woven version,
Combustion such as correction of fan speed stored in the control board 2
New control base 1 with related setting data together with other setting data
If it is transferred to and overwritten, correction is not necessary.
On the contrary, there is a problem that poor combustion occurs .

The present invention has been made in view of the above-mentioned problems, and has been invented. When exchanging a control board of a controller mounted on a water heater, the exchange of setting data between an old control board and a new control board is performed. It is an object of the present invention to provide a control base of a water heater in which normal fan speed data is transferred even when the transfer is performed.

[0005]

In order to achieve the above object, a control board of a water heater according to the present invention is mounted as a new control board of a water heater by replacing a microcomputer, a rewritable memory, and a board. and when the function store receives the transfer of the configuration data from the old control foundation, a control board for at least provided with a water heater, a self-control
The version of the base microcomputer is
Is the same as the version of the
This version has fan speed correction
Procedure to determine if there is
In this case, all the transferred setting data are stored in the memory.
Overwrite and memorize, and the fan speed correction
If it is a version that has been made,
Out of the setting data transferred from the
A first feature in that only the setting data excluding data are then built software having instructions to cause overwritten and stored in the memory.

[0006]

FIGS. 1 and 2 DETAILED DESCRIPTION OF THE INVENTION A flow chart illustrating the operation of the foundation between the transfer of the configuration data of the control board, FIG. 1 is a case of the first embodiment, also the 2 second 2 shows a case according to the second embodiment.

A first embodiment of the present invention will be described with reference to FIGS. When exchanging the control board of the controller of the gas water heater A, the connection terminals of the new control board 1 and the old control board 2 are connected by the remote control line 3 to transfer data. At this time, the data transfer is performed based on software built in the control board. This will be described with reference to FIG. First, the connection terminals of the new and old control boards 1 and 2 are connected by the remote control line 3 (step S11). Subsequently, the power is turned on (step S12). When the power is turned on, it is determined whether the setting data of the old control board 2 has been transferred to the newly prepared control board 1 (step S).
13). When the setting data has been transferred (step S13)
Yes), the new control board 1 has a fan speed
To be stored by overwriting the setting data except for the over data.

[0008] As described above, when the exchange of old and new control board in after-sales service, even if the transfer of the configuration data between the base and from the new control infrastructure 1 In previous control base 2 files
The setting data excluding the rotation speed correction data is overwritten and stored. That is, since the fan rotation speed correction data is controlled not to be overwritten on the new control board 1, if the old control board 2 has the fan rotation speed correction data , the newly prepared control is performed. Even if the setting data is transferred or overwritten between the substrates, the fan rotation speed correction data is not overwritten . This eliminates unnecessary corrections.
In this way, the problem of poor combustion of the water heater is solved (in addition to the double) .

Here, the reason why the above-described correction causes the problem of poor combustion of the water heater to be solved by the first embodiment will be described. First, the relationship between the fan rotation speed (N) and the number (P: gas pressure) of the water heater and its correction value will be described. It should be noted that the number of water heaters is the one that raises 1 liter of water by 1 ° C. per minute as No. 1 and differs depending on the type of water heater. That is, usually, the control platform is used in advance for multiple models,
A standard NP curve (proportional curve with the gas pressure P on the horizontal axis and the fan speed N on the vertical axis) is set in advance, and a correction value (dip correction) is set for each model. ing. For example, if there is a combustion failure at the standard fan speed of a water heater equipped with the old control board 2, the control board 2 must be replaced with a new control board 1. In this case, assuming that the combustion state of the water heater becomes good at the fan rotation speed in the corrected NP curve which is 110% higher than the standard NP curve in the old control board 2,
110% correction is made by the dip correction. On the other hand, the standard NP curve in the new control board 1 (this curve is the same as the corrected NP curve in which the old control board has been corrected by 110%) is used to determine the fan rotation speed of the water heater. Assuming that the combustion state is good, if all the setting data of the old control board 2 is transferred to the new control board 1 and overwritten ,
Fan rotation with dip correction in old control board 2
Since the number correction data is also transferred and overwritten together, the new control board 1 performs the correction twice (the correction is
As a result, a failure occurs in the combustion state of the water heater. When replacing the controller control foundation for this reason from the after-sales service, transfer of the configuration data from the control board 2 of the old to the control board 1 of the new, when overwrite, off
The fan rotation speed correction data is transferred but overwritten
Was not done .

Next, a second embodiment will be described with reference to the flowchart of FIG. New and old control boards 1, 2
Are connected by the remote control line 3 (step S2).
1) Power is turned on (step S22). By turning on the power, it is determined whether or not the setting data of the old control board 2 has been transferred to the new control board 1 (step S23). When the setting data is transferred (step S2
In step S24, it is determined whether the microcomputers of the new control board 1 and the old control board 2 have the same version (step S24). Yes), all the transferred setting data is overwritten and stored in the new control board 1 (step S26). On the other hand, if the determination in step S24 is NO, that is, if it is not determined that they are the same, it is determined that the version has been corrected for the fan rotation speed.
To, among the setting data transferred, fan speed
The setting data except the correction data is overwritten and stored in the new control board 1 (step S2).
5).

As described above, when the old and new control boards are exchanged in the after-sales service, the microcomputer versions of the new control board 1 and the old control board 2 are compared, and if the versions of both microcomputers are the same, all The setting data is transferred and overwritten between the boards, and if the microcomputer version is different, it is assumed that the version has been corrected for fan speed.
Therefore, the fan rotation speed correction data held by the old control board 2 is not overwritten on the new control board 1 and is controlled by software so as not to be stored. Even if data is transferred between the new and old control boards 1 and 2 when the setting of the fan rotation number correction data 2 is changed, the fan rotation number correction data is not updated.
Not written . This allows the correction as before
The disadvantage of double combustion and poor combustion is eliminated. Ma
To replace old and new control boards 1 and 2 of the same version
In this case, the setting data of the old control
Since all data including data is transferred and overwritten, new control
Manual setting of fan speed data in the microcomputer of panel 1
There is no need to do it again. Also from the above, the effect occurs that there is no need to check the operator upon the version of the old and new microcomputer exchange the old and new control board.

[0012]

The present invention is configured as described above, and according to the control board according to the first aspect, a microcomputer, a rewritable memory, and a new board for controlling a water heater by replacing the board. was when the ability to store receives the transfer of the configuration data from the old control foundation, a control board for at least provided with a water heater, its control board
Microcomputer version is the old control board microcomputer
The same or older control board microcomputer
Is a version with fan speed correction
And if the procedure determines that they are the same,
Overwrites all transferred setting data in the memory
The fan speed and make corrections.
From the old control board,
Among the setting data sent, the fan rotation speed correction data
Since only setting data excluding data has a structure in which is incorporated a software having instructions to cause stored by overwriting in the memory, when replacing the old and new control board in after-sales service, a new control infrastructure Microcomputer is the old control base
Of the microcomputer with the fan rotation speed corrected
If the version number of fan rotation correction data even if the foundation between transfer of the configuration data Mycobacterium new control infrastructure
Therefore, there is no inconvenience that combustion failure occurs due to overlapping correction . If the same microcomputer version is used , all the settings transferred from the old control
Constant data is overwritten on the new control board microcomputer
Therefore, there is no need for the operator to make manual settings . Also the actual work
Since it is done by software, also resulting effect that there is no need to check the operator upon the version of the old and new microcomputer exchange the old and new control board.

[Brief description of the drawings]

FIG. 1 is a flowchart illustrating an operation of transferring setting data between bases in a control base of a water heater according to a first embodiment of the present invention.

FIG. 2 is a flowchart illustrating an operation of transferring setting data between bases in a control base of a water heater according to a second embodiment of the present invention.

FIG. 3 is an explanatory diagram for explaining transfer of setting data between control boards.

[Explanation of symbols]

1. New control base 2 Old control base 3 Remote control line A gas water heater

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-8-327061 (JP, A) JP-A-9-152125 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24H 1/10

Claims (1)

(57) [Claims] 1. A microcomputer, a rewritable memory, and a function of receiving and storing a transfer of setting data from an old control board when the hot water heater is installed as a new control board by replacing the board. The control board of the water heater provided at least, the version of the microcomputer of its own control board is the old control
Same or older control as the version of the base microcomputer
A fan whose fan speed has been corrected for the base microcomputer
And the procedure for determining whether the
If the connection is rejected, all the setting data
Overwrite the memory and save it,
If the version is version corrected,
Of the setting data transferred from the control board,
A water heater control base characterized by incorporating software having a procedure for overwriting and storing only setting data excluding rotation speed correction data in said memory .