JPH0233520A - Trouble detection device for combustion equipment and the like - Google Patents

Abstract

PURPOSE:To enable a normal writing of a content of trouble to be stored in a memory means even if a power supply is turned off by a method wherein a power supply monitoring means for sensing a turned off power supply and a writing means capable of continuing a writing operation until the writing operation is completed are provided. CONSTITUTION:If a trouble is detected by a trouble sensing means during use of a combustion equipment, the detected trouble is transmitted to a combustion equipment controlling device 3 so as to perform a safety function and at the same time a content of trouble is written into a memory means 6 by a writing means 7 and stored in it. Even if a supplying of a power supply is not carried out for a trouble sensing device 4 due to a power failure when a trouble occurs, the content of memory of the memory means 6 is held by a back-up power supply 10. As a shielded power supply is detected by a power supply monitoring means 9, a writing operation of the writing means 7 is continued until the writing operation is completed through the back-up power supply 11 even if the power supply is not carried out it the content of trouble is being written in the memory means 6 at present.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a combustion appliance and a failure detection device for storing failure details of the appliance.

BACKGROUND OF THE INVENTION As shown in FIG.
is written in the storage means 6, and the backup power supply 10 (
Therefore, even if the power to the combustion appliance is cut off, the details of the failure stored in the storage means 6 are retained.

By displaying the details of the failure stored in the storage means 6 on the display means 8, the service person for the combustion appliance can assist in diagnosing the failure.

Problems to be Solved by the Invention However, in the conventional configuration, if the power to the combustion appliance is cut off while the failure details are being written to the storage means 6, the operation of the writing means 7 becomes unstable, and incorrect failure details are written to the storage means. I had a writing assignment.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, it is an object of the present invention to prevent erroneous failure details from being written in the storage means even if the power is cut off.

Means for Solving the Problems In order to solve the above problems, the failure detection device of the present invention includes:
A failure detection means for detecting a failure of the appliance; a storage means for retaining the failure details detected by the failure detection means even if the power to the appliance is cut off; and a display means for displaying the failure contents stored by the storage means. and a power supply monitoring means for detecting that the power to the appliance has been cut off; and the details of the failure detected by the failure detection means are written in the storage means, and when the power is cut off, the power supply monitoring means cuts off the power. The device is equipped with a writing means that detects that the failure has occurred and does not write, but writes the failure contents currently being written as normal.

According to the above-described configuration, the present invention writes the details of the failure of the appliance detected by the failure detection means to the storage means that retains the contents even if the power to the appliance is cut off. However, it is possible to know the details of the failure when it occurs through the display means.

Further, when the power to the appliance is cut off, the power supply monitoring means detects this, and the writing means does not write the details of the failure into the storage means E. Then, the fault details currently being written are written normally (this makes it possible to prevent erroneous fault details from being written to the storage means even if the power is cut off).

Example An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is a system configuration diagram of a failure detection device which is an embodiment of the present invention, in which 1 is a power outlet for a combustion appliance, 2 is a power supply device, a combustion appliance control device 3 and a failure detection device 4.
supply power to the The failure detection device 4 includes a failure detection means 5 for detecting a failure, a storage means 6 for storing the details of the failure detected by the failure detection means 5, a writing means 7 for writing the contents of the failure into the storage means 6, and a writing means 7 for writing the contents of the failure into the storage means 6. A display means 8 for displaying the contents, a power supply monitoring means 9 for detecting that the power has been cut off, and a power supply monitoring means 9 for detecting the failure details stored in the storage means 6 when the power supply is cut off, such as when the power outlet 1 is unplugged. It is provided with a backup power supply 10 for holding data, and a backup power supply 11 for continuing the writing operation of the writing means 7 until the writing is completed if the failure contents of the storage means 6 are being written.

The operation of the failure detection device configured as described above will be described below.

When the failure detection means 5 detects a failure while the combustion appliance is in use,
The signal is transmitted to the combustion appliance control device 3 to operate the safety function, and the detected failure details are transmitted to the writing means 7, where they are written and stored in the storage means 51.

On the other hand, the display means 7 displays the details of the failure according to the contents stored in the storage means 6 and clearly indicates the location of the failure, thereby shortening the time for failure repair and making it possible to perform an appropriate failure diagnosis.

Next, even if the user turns the power outlet 1 off and on again when a failure occurs, or the power supply to the failure detection device 4 is cut off due to a power outage, etc., the contents stored in the storage means 6 are retained by the backup power supply 10. When power is supplied again, the display means 7 can display the details of the failure that has occurred.

Further, when the power supply monitoring means 9 detects a power interruption, the writing means 7 does not write the details of the failure into the storage means 6I. If the failure details are currently being written into the storage means 6, even if the power is not supplied, the backup power supply 11 can continue to write 0J to the writing means 7 until the writing is completed. can be written normally.

As described above, according to the first embodiment, it is possible to detect a power cutoff from the power supply monitoring means 91 and to continue the writing operation of the writing means 7 until the writing is completed by the backup power supply 11. The details of the fault that occurred are not written into the storage means 6.

Effects of the Invention As described above, the present invention provides a power monitoring means that detects even if the power is cut off, and a writing means that can continue the write operation until the writing is completed. Also, it is possible to write the failure details normally without writing the wrong failure contents to the storage means.

[Brief explanation of the drawing]

1 is a system configuration diagram of an embodiment of the failure detection device of the present invention, and FIG. 2 is a system configuration diagram of an embodiment of the prior art. 4... Failure detection device, 5... Failure detection means, 6... Storage means, 7... Writing means, 9... Song power supply monitoring means.

Claims (1)

[Claims] A failure detection means for detecting a failure of the appliance; a storage means for retaining the failure details detected by the failure detection means even if the power to the appliance is cut off; and a display means for displaying the failure contents stored by the storage means. and a power supply monitoring means for detecting that the power supply to the appliance is cut off, and a failure content detected by the failure detection means is written in the storage means, and when the power supply is cut off, the power supply is cut off by the power supply monitoring means. A failure detection device for a combustion appliance, etc., comprising a writing means for detecting a failure and not writing, but writing normally the contents of the failure currently being written.