JP3523689B2 - Water heater eigenvalue storage device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The characteristic value of a water heater performing a hot water supply operation for igniting a hot water supply burner and supplying hot water based on a preset characteristic value in response to opening of the plug. Related to a storage device. 2. Description of the Related Art Conventionally, as a characteristic value storage device of this type of water heater, a characteristic value is previously set in a dip switch, a slide switch, a variable resistance volume, a rotary switch, or the like. The hot water supply control means transmits a unique value set in a dip switch, a slide switch, a rotary switch, or the like to a digital signal (for example, an on / off value,
(Decimal code value or decimal code value), and the hot water supply operation is managed based on the digital signal. [0003] The hot water supply control means detects an eigenvalue set in a variable resistance volume or the like in the form of an analog signal,
Further, the digital signal is created by A / D conversion as needed, and the hot water supply operation is managed based on the analog signal or the digital signal. [0004] The characteristic value of the water heater is defined as the difference between each water heater model and the difference between each area where the same water heater is installed. A difference correction value set by a dip switch, a slide switch, a rotary switch, or the like at the time of installation, such as a proportional valve% mode value, a combustion fan mode value, a combustion gas type value, an ignition mode value, an operation mode value, Bathtub water level setting, freezing prevention pump operation value, bathtub size setting, bath MIN water volume, bath MAX water volume,
There are a hot water supply temperature MIN value, a hot water supply temperature MAX value, and the like. However, in such a conventional eigenvalue storage device, a dip switch, a slide switch,
Since it was necessary to set various types of eigenvalues in advance for a plurality of types of switches such as a variable resistance volume and a rotary switch, it is complicated to set various types of eigenvalues,
There has been a problem that setting the eigenvalue requires a lot of labor and erroneous setting is apt to occur. Further, when an attempt is made to update a specific characteristic value during a hot water supply operation of a water heater, a device provided with a corresponding switch is searched for, and an electronic circuit board mounted therein is searched for. It is necessary to find the corresponding switch on the board, further examine the setting rule of the corresponding switch, and update the switch setting based on the rule. Updating such a unique value is complicated, and the unique value Requires a lot of effort to update
There is also a problem that erroneous updating is likely to occur. The present invention has been made in view of such a conventional problem. At the time of shipment from a factory, on-site installation, or hot water supply operation, the eigenvalue can be reliably and surely reduced with small labor as needed. It is an object of the present invention to provide a unique value storage device that can set or update a unique value. Means for solving the problems The gist of the present invention for achieving the object is as follows. [1] In the eigenvalue storage device of the water heater (10) for performing a hot water supply operation for igniting a hot water supply burner and supplying hot water based on a preset eigenvalue (11a) in response to opening, An EEPROM (12) for storing the unique value (11a), and a hot water supply that manages a hot water supply operation based on the unique value (11a) stored in the EEPROM (12) and that can update the unique value (11a) during the hot water supply operation A data input / output terminal device independent of the control means and the hot water supply control means, having an independent CPU and a monitor, and directly accessing the EEPROM (12) during the hot water supply operation to store the stored unique value (11a And (3) external input / output means (13) capable of updating the eigenvalue storage device (11) of the water heater. Note that an EEPROM (Electrica)
lly Erasable and Programma
ble Read Only Memory) is EPR
OM (Erasable and Programmab
le Read Only Memory), which is capable of electrically erasing and rewriting eigenvalue contents. Rewriting can be performed for each byte. Also,
A flash type EEPROM can erase all bits or unit blocks at a time. EEPR
In the OM, power is required to erase and write a unique value, but the unique value content once stored is retained even after the power is turned off. The water heater (10) has a hot water supply burner and a heat exchanger that transfers heat from the hot water supply burner to the water supply, and ignites the hot water supply burner in response to opening to supply hot water. Perform hot water supply operation. The characteristic value (11a) of the water heater (10) is
A dip switch, slide switch, or rotary switch is used when the water heater (10) is shipped from a factory or installed on site to correct differences that occur for each water heater model and differences that occur for each area where the same water heater is installed. A difference correction value set by a switch or the like, for example, a proportional valve% mode value, a combustion fan mode value, a combustion gas type value, an ignition mode value, an operation mode value, a bathtub water level set value, and a freeze prevention pump operation. Value, bathtub size setting value, bath MIN water volume value,
Bath MAX water amount value, hot water supply temperature MIN value, hot water supply temperature MAX
Value. When the water heater (10) is to be initialized at the time of factory shipment or on-site installation, the unique value (11a) is set via the external input / output means (13) or the hot water supply control means (14). , The eigenvalue (11a) is EEPR
Stored in the OM (12). [0015] The hot water supply control means (14) is an EEPROM.
The hot water supply operation based on the unique value (11a) stored in (12) is managed. When a specific eigenvalue is to be updated during the hot water supply operation of the water heater (10), the external input / output means (13)
Alternatively, the characteristic value (11a) is supplied via the hot water supply control means (14).
Is updated, and the unique value (11a) is stored in the EEPROM (1
Stored in 2). Thus, the eigenvalues can be set or updated at any time as needed, at the time of factory shipment, on-site installation, or hot water supply operation, with a small amount of labor. An EEPROM (Electrica)
lly Erasable and Programma
ble Read Only Memory) is EPR
OM (Erasable and Programmab
le Read Only Memory), which is capable of electrically erasing and rewriting eigenvalue contents. Rewriting can be performed for each byte. Also,
A flash type EEPROM can erase all bits or unit blocks at a time. EEPR
In the OM, power is required to erase and write a unique value, but the unique value content once stored is retained even after the power is turned off. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an eigenvalue storage device 11 according to one embodiment of the present invention. The water heater 10 ignites a hot water burner to supply hot water based on a preset unique value 11a in response to opening. In this embodiment, a Bunsen burner is used as the hot water supply burner. This allows the air required for combustion to be sucked in from the air intake using the negative pressure generated around the combustion gas when it flows in, creating a premixed flame that does not generate soot. it can. As shown in FIG. 1, the eigenvalue storage device 11 of this embodiment includes an EEPROM 12, an external input / output means 13, and a hot water supply control means 14. The EEPROM 12 is connected to the external input / output means 13 and the hot water supply control means 14 so as to store the unique value 11a. Note that an EEPROM (Electrica)
lly Erasable and Programma
ble Read Only Memory) is EPR
OM (Erasable and Programmab
le Read Only Memory), which is capable of electrically erasing and rewriting eigenvalue contents. Rewriting can be performed for each byte. Also,
A flash type EEPROM can erase all bits or unit blocks at a time. EEPR
In the OM, power is required to erase and write a unique value, but the unique value content once stored is retained even after the power is turned off. The external input / output means 13 includes an EEPROM 12
EEPRO to update the unique value 11a stored in
M12. The external input / output means 13 of this embodiment includes:
A data input / output terminal device centered on a CPU, connected to an EEPROM 12 via a data bus,
If necessary, the unique value 11a can be set or updated at any time. The external input / output means 13 (data input / output terminal device) comprises a CPU independent of the hot water supply control means 14 so that the EEPROM 12 can be directly accessed without the intervention of the hot water supply control means 14. I have. Further, the external input / output means 13 (data input / output terminal device) has a monitor so that the result of setting or updating can be confirmed. The hot water supply control means 14 manages the hot water supply operation based on the unique value 11a stored in the EEPROM 12 and updates the unique value 11a with the EEPROM.
12. The hot water supply control means 14 of this embodiment is an electronic circuit centered on a CPU, and is EE via a data bus.
Connected to the PROM 12 and, if necessary,
The unique value 11a can be set or updated, and the result of the setting or update can be confirmed by a monitor connected to the CPU via a data bus. The unique value 11a of the water heater 10 is used to correct differences that occur for each type of water heater and differences that occur for each region where the same water heater is installed.
A difference correction value set by a dip switch, a slide switch, a rotary switch, or the like at the time of factory shipment or on-site installation, such as a proportional valve% mode value, a combustion fan mode value, a combustion gas type value, and an ignition mode. Value, operation mode value, bathtub water level setting, freezing prevention pump operation value, bathtub size setting, bath MIN water volume, bath M
There are an AX water amount value, a hot water supply temperature MIN value, a hot water supply temperature MAX value, and the like. Next, the operation will be described. FIG. 1 is a block diagram showing an eigenvalue storage device 11 according to one embodiment of the present invention. The water heater 10 includes a hot water supply burner and a heat exchanger that transfers heat from the hot water supply burner to the water supply, and performs a hot water supply operation in which hot water is supplied by igniting the hot water supply burner in response to opening. The unique value 11a of the water heater 10 is used for correcting differences that occur for each type of water heater and differences that occur for each region where the same water heater is installed. A difference correction value set by a dip switch, a slide switch, a rotary switch, or the like at the time of installation, such as a proportional valve% mode value, a combustion fan mode value, a combustion gas type value, an ignition mode value, an operation mode value, The water level setting value of the bathtub, the freeze prevention pump operation value, the bathtub size setting value, the bath MIN water amount value, the bath MAX water amount value, the hot water supply temperature MIN value, the hot water supply temperature MAX value, and the like. When the water heater 10 is shipped from a factory or installed on site,
When trying to initialize eigenvalues, external input / output means 1
3 or the unique value 11 a is set via the hot water supply control means 14, and the unique value 11 a is stored in the EEPROM 12. The external input / output means 13 of this embodiment is a data input / output terminal device centered on a CPU connected to the EEPROM 12 via a data bus, and sets or sets a unique value 11a as needed. Update. Further, since the external input / output means 13 (data input / output terminal device) includes a CPU independent of the hot water supply control means 14, the EEPROM 12 can be directly accessed without passing through the hot water supply control means 14. . Further, since the external input / output means 13 (data input / output terminal device) has a monitor, the unique value 1
The setting or update result of 1a can be confirmed. Note that an EEPROM (Electrica)
lly Erasable and Programma
ble Read Only Memory) is EPR
OM (Erasable and Programmab
le Read Only Memory), which is capable of electrically erasing and rewriting eigenvalue contents. Rewriting can be performed for each byte. Also,
A flash type EEPROM can erase all bits or unit blocks at a time. EEPR
In the OM, power is required to erase and write a unique value, but the unique value content once stored is retained even after the power is turned off. Thus, the unique value 11a can be set in advance in the EEPROM 12 instead of a plurality of types of switches such as a dip switch, a slide switch, a variable resistor volume, and a rotary switch.
Even when a is set, the eigenvalue 11a can be set or updated as needed with as little labor as possible. The hot water supply control means 14 manages the hot water supply operation based on the unique value 11a stored in the EEPROM 12. The hot water supply control means 14 of this embodiment is an electronic circuit centered on a CPU, and is EE via a data bus.
It is connected to the PROM 12 and, if necessary,
The unique value 11a can be set or updated. Further, the results of these settings or updates can be confirmed by a monitor connected to the CPU via a data bus. When the specific value 11a is to be updated during the hot water supply operation of the water heater 10, the unique value 11a is updated via the external input / output means 13 or the hot water control means 14, and the unique value 11a is stored in the EEPROM 12. . Thus, during the hot water supply operation of the water heater 10,
Even when an attempt is made to update the specific eigenvalue 11a, a device provided with a corresponding switch is searched for an electronic circuit board mounted therein, and a corresponding switch on the electronic circuit board is searched for. It is not necessary to perform a complicated operation such as checking a switch setting rule and updating the switch setting based on the rule, and the unique value 11a can be set or updated as needed with a small amount of labor as needed. Note that an EEPROM (Electrica)
lly Erasable and Programma
ble Read Only Memory) is EPR
OM (Erasable and Programmab
le Read Only Memory), which is capable of electrically erasing and rewriting eigenvalue contents. Rewriting can be performed for each byte. Also,
A flash type EEPROM can erase all bits or unit blocks at a time. EEPR
In the OM, power is required to erase and write a unique value, but the unique value content once stored is retained even after the power is turned off. According to the water heater eigenvalue storage device of the present invention, when the eigenvalue is to be initialized at the time of factory shipment or on-site installation of the water heater, external input / output means or hot water supply control means is required. , And the eigenvalue is set to EE
Stored in PROM. [0045] Thus, in place of a plurality of types of switches such as a dip switch, a slide switch, a variable resistance volume, a rotary switch, and the like, a unique value can be set in the EEPROM in advance. At any time, the eigenvalue can be set or updated with little effort and with certainty. Similarly, when an attempt is made to update a specific eigenvalue during the hot water supply operation of the water heater, the eigenvalue is updated via external input / output means or hot water supply control means, and the eigenvalue is EE
Stored in PROM. Thus, even when an attempt is made to update a specific eigenvalue during the hot water supply operation of the water heater, a device provided with a corresponding switch is searched for an electronic circuit board mounted therein, and an electronic circuit board mounted therein is searched for. It eliminates the need for complicated operations such as searching for the appropriate switch on the board, checking the applicable switch setting rules, and updating the switch settings based on the rules. In addition, a unique value can be set or updated, and the monitor can confirm the result of setting or updating the unique value.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an eigenvalue storage device according to one embodiment of the present invention. [Description of Signs] 10 hot water heater 11 eigenvalue storage device 11a eigenvalue 12 EEPROM 13 external input / output means 14 hot water supply control means

Claims (1)

(1) An apparatus for storing a unique value of a water heater that performs a hot water supply operation of igniting a hot water supply burner and supplying hot water based on a preset unique value in response to opening. An EEPROM for storing the unique value, hot water supply control means for managing the hot water supply operation based on the unique value stored in the EEPROM, and updating the unique value during the hot water supply operation; and data independent of the hot water supply control means. An input / output terminal device, comprising: an independent CPU and a monitor; and external input / output means capable of directly accessing the EEPROM during hot water supply operation and updating a stored eigenvalue. A water heater eigenvalue storage device.