JPH05256507A - Combustion control device for bath boiler - Google Patents

Abstract

PURPOSE:To enable free selection as to whether a hot water temperature in a bathtub is maintained to a preset temperature after the hot water temperature reaches the desired value and also enable heating operation to be controlled according to the way of taking a bath with regard to a combustion control device for a bath boiler. CONSTITUTION:When a change-over switch 13 is manually operated in order to input an operation mode in which a hot water temperature reaches the desired value, an ignition sequence circuit 11 compares a hot water temperature detected by a hot water temperature detecting circuit 15 on the basis of a detection signal from a temperature sensor 2 with a preset temperature inputted into a hot water temperature setter. If both the temperatures coincide with each other, the operation mode of raising the hot water temperature to the desired level is finished, and the heating operation of a burner is stopped. Further, when the change-over switch 13 is manually operated in order to input an automatic operation mode, the ignition sequence circuit 11 instructs reheating operation to a bath boiler in case where the hot water temperature in a bathtub is lowered even after finishing the operation mode of raising the hot water temperature to the desired level, whereby the hot water temperature can be maintained at the preset temperature at all times. Thus, the method of the reheating operation of the bath boiler after raising the hot water temperature to the desired level can be selected freely according to the way of taking a bath after the hot water temperature reaches the desired value, thereby making the device convenient for use and making it possible to save energy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion control device for a gas bath pot or the like.

[0002]

2. Description of the Related Art A conventional bath kettle that simply boils water in a bathtub has been improved, and after boiling, the bath water is reheated to a set temperature when the water temperature drops due to heat radiation, and the bath temperature is always suitable for bathing. A device to be kept at is conceivable.

[0003]

However, in the improvement of the above-mentioned structure, once the water is boiled once, the bath water is maintained at the set temperature. When the water is simply boiled and the bathing time is not fixed, the bath water is set once at the time of bathing. It is possible to prevent waste of energy by reheating to.

Therefore, the present invention provides an apparatus capable of selecting whether or not to always maintain an appropriate bath temperature as a heating operation after boiling of bath water.

[0005]

In order to achieve the above-mentioned object, the means of the combustion control device for the bath according to the present invention detects the heat exchanger circulating the bath water and the hot water temperature of the bath water. Equipped with a bath kettle that consists of a temperature sensor and a burner that heats the heat exchanger with combustion gas to boil the water in the bathtub, and uses a hot water temperature setter to set the boiling temperature of the bath water and the bathtub from the detection signal of the temperature sensor The hot water temperature detection circuit that detects the boiling temperature of water and the heating operation is instructed to the bath kettle until the boiling temperature detected by the hot water temperature detection circuit reaches the boiling temperature set by the hot water temperature setting device. Boiling operation mode,
And, if the detected temperature falls below the set temperature after the end of the boiling operation mode, an ignition sequence circuit having an automatic operation mode for instructing the bath heater to reheat operation and heating the bath water to the set temperature, and the boiling It is provided with a changeover switch for manually selecting and inputting the raising operation mode and the automatic operation mode.

[0006]

According to the present invention, when the changeover switch is manually input to the boiling operation mode, the ignition sequence circuit inputs the boiling temperature detected by the hot water temperature detection circuit based on the detection signal of the temperature sensor to the hot water temperature setting device. Compared with the set temperature that has been set, when both temperatures match, the boiling operation mode is terminated and the burner heating operation is stopped. In addition, if the changeover switch is manually input to the automatic operation mode, the ignition sequence circuit will instruct the bath kettle to reheat even after the boiling operation mode ends, and the hot water temperature can always be maintained at the set temperature. ..

In this way, the heating operation method of the bath kettle after boiling can be freely selected according to the way of taking a bath after boiling and the like, which is more convenient and energy saving can be achieved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, the controller 1 has a hot water temperature control volume 18 as a temperature controller and a changeover switch 13 built therein. First, adjust the boiling temperature by adjusting the hot water temperature 1
After setting at 8, when the changeover switch 13 is set to "automatic" or "boiling", if the water temperature (hot water temperature) is below the set temperature, the ignition operation is started. For ignition, first, the closing valve 3 is opened, the pilot burner 5 is ignited, and after confirming that the pilot burner 5 is ignited, the ignition valve 4 is opened and the main burner 6 is ignited. The heat exchanger 7 is heated by the main burner 6 to boil the bath. When it is detected by the signal from the temperature sensor 2 that the set hot water temperature is reached, the ignition valve 4 and the shutoff valve 3 are closed, and the combustion is stopped. Further, when the temperature sensor 2 is out of order and is not heated, an abnormality is detected by a signal from the temperature sensor 2 and the ignition valve 4
Then, the stop valve 3 is closed to stop all operations.

Next, referring to FIG. 2, the changeover switch 13, the abnormality detection circuit 14, the hot water temperature detection circuit 15 and the forced combustion circuit 16 are shown.
The boiling stop circuit 17 and the hot water temperature control volume 18 are built in the controller 1. The changeover switch 13 is
There are "off", "automatic", "boiling" and "continuous" modes.

First, when the changeover switch 13 is "OFF", the DC power is not transmitted and all operations are stopped. Next, when the changeover switch 13 is set to "continuous", the DC power is directly supplied to the ignition sequence circuit 11, and the main burner 7 burns. When the changeover switch 13 is set to "automatic operation",
If there is no failure in the sensor 2 from the signal from the sensor 2, the DC power is supplied to the hot water temperature detection circuit 15 via the abnormality detection circuit 14, and the signal from the sensor 2 compares the set temperature with the water temperature (hot water temperature). If the set temperature is high, the hot water temperature detection circuit 1
DC power is supplied to the ignition sequence circuit 11 via 5 and the main burner 7 burns. Then, the signal that the ignition valve 4 is opened activates the forced combustion circuit 16 for detection of the empty heating, and the DC power source is given to the ignition sequence circuit 11 through the forced combustion circuit for a predetermined time to perform combusted combustion.
In the meantime, if there is no heating by the signal from the temperature sensor 2, the abnormality detection circuit 14 is activated and the DC power supply is the abnormality detection circuit 1
It stops at 4 and all movement stops. If normal, if the set temperature is higher than the hot water temperature after the operation of the forced combustion circuit 16 is completed, the DC power supply is given to the ignition sequence circuit 11 via the hot water temperature detection circuit 15 and burns until the hot water temperature reaches the set temperature. continue. If the set temperature is lower than the hot water temperature, the DC power supply stops at the hot water temperature detection circuit 15 and the combustion stops. Next, when the hot water temperature becomes equal to or lower than the set temperature, the DC power source is supplied to the ignition sequence circuit 11 via the hot water temperature detection circuit, and the above operation is repeated.

Next, when the changeover switch 13 is set to "boiling", the above operation is carried out until it boils to the set temperature, and when it boils to the set temperature, the DC power supply is stopped by the boiling stop circuit and all the operations are stopped. To do.

When the temperature sensor 2 fails, the DC power supply is stopped by the abnormality detection circuit 14 by the signal of the temperature sensor 2 and all the operations are stopped.

As described above, according to this embodiment, when the desired hot water temperature is set and the changeover switch 13 is set to "automatic",
Not only does the bath water boil to the set temperature, but even if the bath water radiates heat and the hot water temperature drops after a lapse of time, the main burner 6 again heats the bath water to the set temperature according to the instruction of the ignition sequence circuit 11. It is easy to use because you can bathe in hot water at the set temperature at any time. Also, if you want to stop both heating operations after boiling, you can prevent waste of energy by putting the changeover switch 13 in "boiling", and also use "continuous" heating operation. You can also select the driving that suits your usage.

[0015]

As described above, the combustion control device for a bath kettle according to the present invention is an automatic operation mode in which the ignition sequence circuit only heats the bath water to a boiling temperature and maintains the temperature at the set temperature even after boiling. Since it has an operation mode and can select and input both of the operation modes with the changeover switch, it is possible to freely select whether to maintain the hot water temperature of the bathtub water after boiling at the set temperature, and the operation control according to the usage can be performed. It is possible to improve usability and save energy.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a control device that is an embodiment of the present invention.

FIG. 2 is a block diagram of the control device.

[Explanation of symbols]

 1 Controller 2 Temperature Sensor 7 Heat Exchanger 13 Changeover Switch 18 Hot Water Temperature Control Volume

Claims (1)

[Claims] 1. A bath kettle comprising a heat exchanger for circulating bath water, a temperature sensor for detecting the hot water temperature of the bath water, and a burner for heating the heat exchanger with combustion gas to boil the bath water. , A hot water temperature setting device that sets the boiling temperature of the bath water,
A bath temperature detection circuit that detects the boiling temperature of the bath water from the detection signal of the temperature sensor, and a bath until the detection temperature of the boiling point detected by the bath temperature detection circuit reaches the boiling temperature set by the hot water setting device. A boiling operation mode instructing the kettle to perform a heating operation, and an automatic reheating operation is instructed to the bath kettle to heat the bath water to the preset temperature in the previous period if the detected temperature falls below the set temperature after the boiling operation mode ends. A combustion control device for a bath kettle equipped with an ignition sequence circuit having an operation mode, and a changeover switch for manually selecting and inputting a previous boiling operation mode and an automatic operation mode.