JPH062950A - Controlling method for oil fired warm water boiler - Google Patents

Abstract

PURPOSE:To shorten the time for an evaporator to reach ignition temperature by detecting a temperature of warm water during stopping of an operation to monitor the atomospheric temperature, and operating a evaporator heater when the atmospheric temperature is low and the temperature of the warm water is a predetermined value or lower, thereby heating a combustion unit including the evaporator and the warm water. CONSTITUTION:An oil fired warm water boiler comprises an outdoor unit 2 and an indoor unit 1, and circulates warm water therebetween. The unit 1 heats the warm water to be circulated in a combustion chamber of a combustion unit having an evaporator 3, an evaporator heater 4, etc., by a heat exchanger 7, and circulates it to the unit 1 through a flush tank 8. On the other head, the unit 1 heats the air by a heat exchanger 10 by utilizing the warm water to be circulated, and feeds it by a blower fan 11. In this case, a temperature of the warm water is detected by detecting means 13 during stopping of an operation. As a result, when the temperature of the warm water is a predetermined value or lower, the heater 4 is operated to raise the temperature of the evaporator 3 to a temperature capable of igniting it. Thus, it heats the combustion unit and the warm water to shorten a time when it is ignited.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil-heated hot water boiler composed of an outdoor unit and an indoor unit, and more specifically, shortens the time required to obtain the hot water temperature required for heating at the start of operation and improves usability. The present invention relates to a method for controlling an oil-cooked hot water boiler.

[0002]

2. Description of the Related Art Conventionally, an oil-cooked hot water boiler of this type is composed of an outdoor unit 1 and an indoor unit 2 as shown in FIG. 3, and hot water is piped between the outdoor unit 1 and the indoor unit 2. Is circulated in.

The outdoor unit 1 has a combustion section including a carburetor 3, a vaporization heater 4, a combustion blower 5, a fuel pump 6 and the like, and the hot water (heat medium) circulated in the combustion chamber of the combustion section. A heat exchanger 7 that heats the indoor unit 2, a cis tank 8 that stores the warm water that has been warmed and that can circulate the warm water to the indoor unit 2, and a hot water pump 9 that circulates the hot water from the cis tank 8 to the indoor unit 2. Is provided.

The indoor unit 2 is provided with a heat exchanger 10 for warming the air with hot water circulated from the outdoor unit 1, and a blower fan unit 11 for sending the warmed air to the indoor unit.

By the way, the oil-boiled hot water boiler having the above construction is operated by operating the remote controller 12 or the operation panel of the main body of the indoor unit 2.
By the N operation, the operation lamp on the main body side of the indoor unit 2 is turned on, and the operation signal is output to the outdoor unit 1.

Then, in the controller of the outdoor unit 1, the vaporization heater 4 is energized to preheat the vaporizer 3. When the temperature of the carburetor 3 reaches a predetermined temperature, that is, when preheating is completed, the combustion blower 5 is operated for a predetermined time, and exhaust gas and the like in the combustion chamber are discharged.

After the completion of the pre-purge, the ignition operation is performed, the fuel pump 6 is driven, and the combustion is performed.
Due to this combustion start, the combustion flame causes the heat exchanger 7 in the upper part of the combustion chamber.
The heat medium (antifreeze liquid) of the heat exchanger 7 is warmed because it passes through. At this time, the hot water pump 9 is driven, the heated heat medium (warm water) is pressure-fed to the indoor unit 2 side through the cis tank 8, and the indoor air is further passed through the heat exchanger 10 of the indoor unit 2. Is exchanged with the heat and is returned to the outdoor unit 1 again.

As a result, warm air is blown from the indoor unit 2, so that the indoor heating is maintained in a comfortable state.

[0009]

However, in the above oil-boiled hot water boiler, the vaporization heater 4 is energized at the start of the operation, and the ignition operation is performed until the vaporizer 3 is preheated to a predetermined temperature. When the outdoor temperature is low, it takes time to rise to a temperature that satisfies the ignition operation, and it takes time to obtain the hot water temperature necessary for heating, which slows down the indoor heating. there were.

The present invention has been made in view of the above problems, and an object thereof is to shorten the time until the ignition operation even if the outdoor temperature is low and to quickly obtain the hot water temperature required for heating. The object of the present invention is to provide a method for controlling an oil-cooked hot water boiler that improves convenience.

[0011]

In order to achieve the above object, the present invention relates to an oil-cooked hot water boiler in which hot water obtained by a heat exchanger of an outdoor unit is circulated to a heat exchanger of an indoor unit via a cistern, The temperature of hot water is detected while the operation of the oil-fired hot water boiler is stopped, and the outside air temperature is monitored.When the detected hot water temperature is equal to or lower than a predetermined value, the vaporization heater of the outdoor unit is energized to turn the vaporizer The gist is that the temperature is raised to a value at which the ignition operation is possible, the hot water is circulated, and the combustion part is warmed by the temperature rise of the carburetor, and the circulating hot water is warmed.

[0012]

With the above method, the temperature of the hot water corresponding to the outdoor temperature is detected by the hot water thermistor while the oil-boiled hot water boiler is not operating, and the detected temperature is below a predetermined value t (for example, 0 ° C.). Then, the vaporization heater is energized to bring the temperature of the vaporizer to a value at which the ignition operation can be performed.

Simultaneously with the energization of the vaporization heater, the combustion blower and the hot water pump are controlled to warm the combustion chamber, the hot water is circulated to the indoor unit through the cis tank, and the combustion chamber is warmed. As a result, the circulating hot water is slightly warmed.

As described above, when the outdoor temperature is low during the operation stop and it takes time to raise the temperature of the carburetor to a value at which the igniter can operate, the carburetor is preheated and the hot water is warmed. Therefore, at the start of operation, the ignition operation is performed quickly, and the time required to obtain the hot water temperature required for heating the room can be shortened.

[0015]

EXAMPLE A method for controlling an oil cooked hot water boiler according to the present invention is as follows.
The temperature of hot water (heat medium) circulated between the outdoor unit and the indoor unit is affected by the outdoor temperature, and the lower the outdoor temperature, the lower the temperature of the hot water. When the detected temperature is below a predetermined value (t; for example, 0 ° C), the outdoor temperature is low, so that the vaporization heater can be energized to ignite the vaporizer. The temperature is raised to a temperature, and the combustion part and the circulating hot water are warmed so that the ignition operation can be performed quickly at the start of the operation.

Next, an embodiment of the present invention will be described with reference to FIGS. 1 and 2. In FIG. 2, the same parts as those in FIG. 3 and corresponding parts are designated by the same reference numerals to omit redundant description, and FIG. 3 is referred to in describing this embodiment.

In FIG. 2, the oil cooked hot water boiler is
A hot water thermistor 13 that detects the temperature of hot water circulated between the outdoor unit 1 and the indoor unit 2, and at least the vaporization heater 4 when the temperature of the hot water is below a predetermined value (t; 0 ° C.) during an operation stop. , A control device (microcomputer) 14 for controlling the fuel blower 5 and the hot water pump 9.

The hot water thermistor 13 is arranged at a predetermined position of the pipe connecting the heat exchanger 7 of the outdoor unit 1 and the cis tank 8 as shown in FIG. 3, and the set temperature of the oil-heated hot water boiler is set. Variably controls the combustion temperature by
It also serves as a sensor used to control the temperature of circulating hot water. Further, the control device 14 inputs a signal (operation / stop, etc.) from the remote controller 12 or the operation panel 15 of the main body of the indoor unit 2 to control the oil-boiled hot water boiler as in the conventional case.

The control method of the oil-cooked hot water boiler having the above-mentioned structure will be described in detail with reference to the flow chart of FIG.
First, the control device 14 determines whether or not the operation of the oil-heated hot water boiler is stopped, that is, whether or not an operation signal is output from the remote controller 12 or the operation panel 15 (step ST1). When the operation signal is in a waiting state, the process proceeds to step ST2, and it is determined whether the temperature detected by the hot water thermistor 13 is equal to or lower than a predetermined value t.

The outside air temperature is monitored by judging the detected hot water temperature. When the outdoor temperature is low and the detected temperature is not more than the predetermined value t, the process proceeds to step ST3, and the vaporization heater 4 of the outdoor unit 1 is controlled, That is, the vaporization heater 4 is energized until the temperature of the vaporizer 3 rises to a predetermined temperature (for example, 305 ° C .; temperature at which ignition operation is possible). In addition,
To control the energization of the vaporization heater 4, the temperature of the vaporizer 3 is set to 3
It turns off at 05 ° C and turns on at the same temperature of 255 ° C.

At the same time when the vaporization heater 4 is energized, the combustion blower 5 and the hot water pump 9 are controlled. As a result, the combustion section of the outdoor unit is warmed, hot water is circulated from the outdoor unit 1 to the indoor unit 2 via the cis tank 8, and the combustion section is warmed, so that it passes through the heat exchanger 7 of the outdoor unit 1. A little warm water is warmed.

On the other hand, when the circulating hot water is warmed and the hot water temperature exceeds a predetermined value t, the vaporization heater 3 is de-energized, and the combustion blower 5 and the hot water pump 9 are provided.
However, when the temperature detected by the hot water thermistor 13 becomes equal to or lower than the predetermined value t, the above process is repeated again.

Thus, while the hot water boiler is not operating, the outdoor temperature is monitored by the temperature detected by the hot water thermistor 13. Since the temperature is raised to the temperature at which the ignition can be operated, the time required to start the ignition can be shortened when starting the operation, which in turn shortens the time required to reach the hot water temperature required for heating the room. it can. Moreover, only by energizing the vaporization heater 4,
Since combustion control is not performed, safety is high.

Further, in the above embodiment, the hot water thermistor 13 is also used for monitoring the outside air temperature, but an outside air temperature sensor may be newly provided in order to detect the outside air temperature. In this case, when the temperature detected by the new outside air temperature sensor becomes equal to or lower than a predetermined value (a value different from t), step ST3 may be executed.

[0025]

As described above, according to the present invention, in an oil cooked hot water boiler composed of an outdoor unit and an indoor unit, the temperature of hot water is detected while the oil cooked hot water boiler is out of operation to detect the outside air. The temperature is monitored, and when the outside air temperature is low and the detected temperature is below a predetermined value, at least the temperature of the carburetor is raised to a value at which ignition operation is possible, and the temperature of the combustion section and the circulating hot water is warmed. Therefore, even when the outdoor temperature is low at the start of the operation, the time until the ignition operation can be shortened, and the time for obtaining the hot water temperature necessary for heating the room can be shortened by this quick ignition operation. Therefore, the indoor heating can be performed quickly, and the convenience of the oil-boiled hot water boiler can be improved.

[Brief description of drawings]

FIG. 1 is a flowchart showing an embodiment of the present invention and explaining the operation of a control method applied to an oil-heated hot water boiler.

FIG. 2 is a schematic block diagram of an oil cooking hot water boiler showing an embodiment of the present invention.

FIG. 3 is a schematic side view of an oil cooked hot water boiler.

[Explanation of symbols]

 1 Outdoor Unit 2 Indoor Unit 3 Vaporizer 4 Vaporizing Heater 5 Combustion Blower 6 Fuel Pump 7 Heat Exchanger (Outdoor Unit 1) 8 Sis Tank 9 Hot Water Pump 10 Heat Exchanger (Indoor Unit 2) 13 Hot Water Thermistor 14 Controller

Claims (1)

[Claims] 1. In an oil-fired hot water boiler in which hot water obtained by an outdoor unit heat exchanger is circulated to a indoor unit heat exchanger via a cistern, the temperature of the hot water is detected while the oil-heated hot water boiler is not operating. Then, when the detected hot water temperature is equal to or lower than a predetermined value, the temperature of the carburetor is raised to a value capable of igniting by energizing the vaporization heater of the outdoor unit, and the hot water is circulated. A method for controlling an oil-cooked hot water boiler, characterized in that the combustion section is warmed by the temperature rise of the carburetor and the circulating hot water is warmed.