JP2664291B2 - Operation control method of petroleum vaporizing heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control of a petroleum-vaporization type heater in which combustion air is taken in from outside and exhaust gas after combustion is discharged outside, and the outside air temperature is detected and reflected in operation control. About the method.

[0002]

2. Description of the Related Art The general operation of a petroleum vaporizing heater of this type will be described with reference to FIGS.

When the heater is operated, the combustion motor M operates, and outside air A is sucked from outside through the air supply port 2 of the air supply / exhaust tube 1, and the air is sucked through the air supply pipe 3 by the action of the combustion motor M. The air is forcibly introduced into the combustion section 4 as combustion air. Oil as fuel is gasified by the action of a heater (not shown) provided in the vaporizer 5 and burned by the burner 6 with the help of combustion air. Exhaust gas B generated by combustion
Is discharged through an exhaust pipe 8 after passing through a heat exchanger 7, and is forcibly discharged outside from an exhaust port 9 of a supply / exhaust tube 1. During such an operation, the temperature of the vaporizer 5 is detected by the thermistor 10 installed in the vaporizer 5, and the state of energization to the heater is controlled by the operation of the control circuit 11 based on the detected temperature.

[0004] In the petroleum vaporizing heater described above,
In the case where the outside air temperature is reflected in adjustment of the amount of combustion air, combustion control, and other operation factors, conventionally, a thermistor is installed separately from the thermistor 10 installed in the carburetor 5 to detect the outside air temperature. That is, as shown in FIG. 3, a thermistor 12 for detecting the outside air temperature is installed outside the wall W outside, and the outside air temperature is detected by the thermistor 12. A method of installing a thermistor 13 in the passage of the combustion air and detecting the temperature of the outside air sucked through the air supply pipe 3 by the thermistor 13 has been adopted.

[0005]

However, if a method of detecting the outside air temperature by using the thermistors 12 and 13 different from the thermistor 10 installed in the vaporizer 5 as in the prior art is adopted, a method other than the thermistor 10 of the vaporizer 5 is used. Thermistor 12,
In addition to the necessity of an additional 13, there is a problem that the required number of temperature detection circuits increases by one, the structure becomes complicated, and the cost increases.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an operation control method in which a thermistor installed in a vaporizer is also used for detecting the outside air temperature without complicating the structure of a petroleum vaporizing heater and increasing the cost. It is in.

[0007]

According to the present invention, there is provided a method for controlling the operation of an oil-vaporization type heating machine according to the present invention, wherein the heater is energized while the outside air as combustion air is sucked into a carburetor combustion section by a combustion motor during non-combustion. The temperature of the carburetor at that time is measured by the thermistor, and the outside air temperature is determined based on the rising gradient of the carburetor temperature to control various operation states such as adjustment of the amount of combustion air. The non-combustion time is when combustion is not being performed in the carburetor combustion section.

[0008]

In the present invention, when power is supplied to the heater of the carburetor during non-combustion, the carburetor temperature rises with a predetermined gradient. The rising gradient at this time can be distinguished between when the combustion air is sucked into the carburetor combustion part and when it is not sucked, and when the temperature of the outside air as the combustion air is high and low. Can be distinguished. Therefore, utilizing this phenomenon, when the combustion motor is operated while heating the carburetor with the heater at the time of non-combustion, and the outside air as the combustion air is sucked and passed through the carburetor, the carburetor by the outside air The outside air temperature can be determined from the rising gradient of the cooled carburetor temperature, and various operating states such as the amount of combustion air can be controlled based on the outside air temperature.

The measurement of the vaporizer temperature by the thermistor is limited to the time of non-combustion. This is because, during combustion, the exhaust gas temperature may affect the supply air temperature at the supply / exhaust tube, and the accurate outside air temperature is not reflected on the rising gradient of the carburetor temperature.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for controlling the operation of a petroleum vaporizing heater according to the present invention will be described with reference to FIG.

When a combustion motor M is operated while energizing a heater (not shown) of the carburetor 5 to heat the carburetor 5, the combustion through the air supply port 2 of the supply / exhaust tube 1 protruding from the wall W to the outside of the room. Outside air A as air is sucked. This outside air A reaches the carburetor combustion section 4 via the air supply pipe 3, and then passes through the thermistor 10 originally installed in the carburetor 5, and passes through the heat exchanger, the exhaust pipe 8 and the supply / exhaust pipe 1. Street, exhaust 9
From the room.

In this case, in a non-combustion state in which combustion in the burner 6 is not performed, the temperature of the vaporizer 5 rises by being heated by the heater, and the temperature curve draws a rising gradient. The rising gradient is affected by the outside air temperature as combustion air. That is, since the vaporizer 5 is cooled by the outside air A, the rising gradient becomes gentler than when the vaporizer temperature is not affected by the outside temperature, and the rising gradient becomes gentler as the outside temperature is lower. Therefore, the outside air temperature can be determined from the temperature rise gradient measured by the thermistor 10, and it is possible to control various operating elements, such as adjustment of the amount of combustion air, based on the outside air temperature.

FIG. 2 is a graph for explaining the difference in the rise gradient of the vaporizer temperature with the change of the outside air temperature. In this graph, for example, if the rising gradient of the vaporizer temperature when the outside air temperature is 0 ° C. is represented by a broken line L1, the outside air temperature +
When the temperature is 10 ° C., the rising gradient is steep as indicated by a dashed line L2, and when the ambient temperature is −10 ° C., the rising gradient is gentle as indicated by a two-dot chain line L3.

The operation during combustion is the same as that described with reference to FIGS. 3 and 4, and a description thereof will be omitted. It is not preferable to determine the outside air temperature based on the temperature measured by the thermistor 10 during combustion. This is because, during combustion, the temperature of the exhaust gas at the supply / exhaust tube 1 may affect the temperature of the outside air as combustion air.

[0015]

According to the present invention, the thermistor originally installed in the vaporizer is used for detecting the outside air temperature, and the outside air temperature is determined based on the rising gradient of the vaporizer temperature.
It is possible to provide an operation control method without complicating the structure and increasing the cost of the oil-vaporization type heater.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an operation control method for a petroleum-vaporization type heater according to an embodiment of the present invention.

FIG. 2 is a graph illustratively showing a difference in a rising gradient of a vaporizer temperature with a change in outside air temperature.

FIG. 3 is an explanatory diagram of an operation control method according to a conventional example.

FIG. 4 is an explanatory diagram of an operation control method according to another conventional example.

[Description of Signs] M Combustion motor 4 Vaporizer combustion section A Outside air (combustion air) 5 Vaporizer 10 Thermistor

Claims (1)

(57) [Claims] 1. A combustion motor is operated to draw combustion air into a carburetor combustion section, a carburetor temperature is detected by a thermistor installed in the carburetor, and a power supply state of a heater installed in the carburetor is determined. In a petroleum gasification type heating machine that performs gasification and combustion of oil while controlling, and in a non-combustion mode, the heater is energized while the outside air as combustion air is sucked into a carburetor combustion section by a combustion motor when not burning. Oil temperature evaporative heating characterized by measuring the vaporizer temperature at that time with the thermistor and judging the outside air temperature based on the rising gradient of the vaporizer temperature to control various operating conditions such as adjusting the amount of combustion air. Machine operation control method.