JPH0596745U - Ignition device for oil burner for water heater - Google Patents

Abstract

(57) [Summary] [Purpose] To shorten the time the igniter is on. [Composition] A hot water temperature detector 3 provided in a water pressure direct heat exchanger 2 and a control circuit 18 for ON / OFF controlling an igniter 7 and an oil pump 5 based on a temperature signal detected by the hot water temperature detector 3. The control circuit 18 is provided with the oil pump 5
Spark temperature Tm immediately before reaching ignition temperature Tm1
When the hot water temperature detector 3 detects 3, the igniter 7 is turned on.
And the igniter 7 is turned off after a lapse of time Ti.
The circuit was configured so that it would be F.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of an ignition device for an oil burner provided in a water pressure direct pressure water heater.

[0002]

[Prior Art]

 As shown in FIG. 3, a conventional ignition device 1 includes a hot water temperature detector 3 including a thermistor and the like provided in a direct water pressure heat exchanger 2, an oil pump 5 for supplying kerosene to an oil burner 4, and an electrode. An igniter 7 for applying a voltage to 6 and a control circuit 8 for receiving a detection signal from the hot water temperature detector 3 and controlling ON / OFF of the igniter 7 and the oil pump 5 are provided. As shown in FIG. 4, when the hot water temperature detector 3 detects the ignition temperature Tm1 as the hot water temperature decreases, the control circuit 8 turns the oil pump 5 ON while the igniter 7 is ON, and the oil burner 4 is ignited. The igniter 7 is turned off after a predetermined time Ti has passed, and when the hot water temperature detector 3 detects the high temperature set temperature Tm2, the oil pump 5 is turned off and the igniter 7 is turned on. is there.

[0003]

[Problems to be solved by the device]

 However, in the conventional oil burner ignition device 1, since the igniter 7 is in the ON state when the high temperature set temperature Tm2 is detected, the igniter 7 remains ON for a long time. Therefore, conventionally, there has been a problem that the igniter 7 and the electrode 6 have a short life, and further, the radio wave interference due to the discharge of the electrode 6 is prolonged.

In order to solve the above problems, the present invention aims to provide an ignition device for a water heater oil burner that can shorten the time that the igniter is on.

[0005]

[Means for Solving the Problems]

 Means adopted by the present invention include a hot water temperature detector provided in a direct water pressure type heat exchanger, and a control circuit for ON / OFF controlling an igniter and an oil pump based on a temperature signal detected by the hot water temperature detector. In the provided oil burner ignition device for the water heater, the control circuit turns on the igniter and turns on the oil pump when the hot water temperature detector detects the spark temperature immediately before the ignition temperature at which the oil pump is turned on. That is, the circuit is configured so that the igniter is turned off after an appropriate time has elapsed.

[0006]

[Action]

 Since the control circuit turns on the igniter immediately before the ignition temperature, the time when the igniter is turned on can be shortened as compared with the conventional case.

[0007]

【Example】

 Hereinafter, an ignition device for an oil burner for a water heater according to the present invention (hereinafter referred to as "device of the present invention") will be described based on an embodiment shown in the drawings. The device of the present invention is characterized by improving the control circuit 18 shown in FIG. The oil pump 5 for supplying the electricity and the igniter 7 for applying the voltage to the electrode 6 to blow the ignition spark to the burner 4 have the same structure as the conventional one.

As shown in the timing chart of FIG. 2, the control circuit 18 detects when the hot water temperature detector 3 detects the spark temperature Tm3 immediately before the ignition temperature Tm1 at which the oil pump 5 is turned on is reached. When the igniter 7 is turned on in response to the detection signal of, the igniter 7 is turned off after the set time Ti has passed from the time when the oil pump 5 is turned on, and the hot water temperature detector 3 detects the high temperature set temperature Tm2. The circuit is configured to turn off the oil pump 5 in response to a detection signal from the hot water temperature detector 3. It is preferable that the spark temperature Tm3 immediately before this is higher than the ignition temperature Tm1 by about 0.5 to 1.0 ° c.

The control circuit 18 first turns on the igniter 7 and then turns on the oil pump 5 when the hot water temperature detector 3 detects a temperature equal to or lower than the spark temperature Tm3 at the first start. It has a circuit configuration.

According to the device of the present invention, since the igniter 7 is turned on from the spark temperature Tm3, the spark time becomes shorter than in the conventional case where the igniter 6 is turned on from the high set temperature Tm2 which is considerably higher than the spark temperature Tm3.

[0011]

[Effect of the device]

 As described above in detail, since the device of the present invention can shorten the time the igniter is on, the igniter and the electrode can have a long life, and the radio wave interference due to the discharge of the electrode can also have a practical effect in a short time.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of the device of the present invention.

FIG. 2 shows a timing chart of the control circuit in the embodiment of the device of the present invention.

FIG. 3 is a block diagram showing a configuration of a conventional ignition device.

FIG. 4 is a timing chart of a control circuit in a conventional ignition device.

[Explanation of symbols]

 2 ... Heat exchanger 3 ... Hot water temperature detector 7 ... Igniter 18 ... Control circuit Tm1 ... Ignition temperature Tm3 ... Spark temperature Ti ... Predetermined time

Claims (1)

[Scope of utility model registration request] 1. A hot water supply provided with a hot water temperature detector provided in a water pressure direct heat exchanger, and a control circuit for ON / OFF controlling an igniter and an oil pump based on a temperature signal detected by the hot water temperature detector. In the ignition device for an oil burner for a vessel, when the hot water temperature detector detects a spark temperature immediately before the ignition temperature at which the oil pump is turned on, the control circuit turns on the igniter and after a predetermined time has elapsed since the oil pump was turned on. An igniter for an oil burner for a water heater, which has a circuit configuration for turning off an igniter.