JP3148313B2 - Liquid fuel combustion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid fuel combustion apparatus in which fuel vaporized by a vaporizer having an electric heater is mixed with air, and the mixed gas is burned in a combustion section.

[0002]

2. Description of the Related Art In this type of liquid fuel combustion apparatus, for example, as disclosed in Japanese Patent Application Laid-Open No. 62-46124, an electric power is supplied so that the temperature of a vaporizer becomes higher than the vaporization temperature of liquid fuel during combustion. The heater is energized to perform gasification combustion. Also, the temperature of the carburetor is maintained at a temperature lower than the temperature at the time of combustion even when the combustion is stopped, so that the gasification combustion can be restarted immediately.

[0003]

However, in the above-described liquid fuel combustion apparatus, when the preheating switch is turned on during the operation stop when the operation switch is turned off, the carburetor is always heated at a predetermined temperature. If there is time before the start of combustion, the power is wasted and was uneconomical.

[0004] The present invention has been made in view of the above-mentioned facts. In the present invention, a carburetor is preheated during operation stop so that gasification combustion can be started immediately.
An object of the present invention is to reduce power consumption of an electric heater while minimizing user's usability.

[0005]

SUMMARY OF THE INVENTION The present invention, by mixing the fuel and air heated vaporized in a vaporizer with an electrical heater, in a liquid fuel combustion apparatus in which the gas mixture thereof so as to be combusted in the combustion unit The liquid fuel combustion device includes:
Judgment means for inputting data such as the combustion time zone and temperature during the stop of combustion and judging the necessity of preheating by energization of the electric heater, and heater control for controlling energization of the electric heater based on the judgment result of this judgment means And a control device having a control unit , and the determination unit stores the control unit before driving.
Control data such as the combustion time zone and energization of the electric heater and the combustion equipment
The control data is compared with the control data of the combustion
Error correction means for correcting the error
It is characterized by having.

[0006]

While [action] judgment means inputs the data of the air temperature and the like at the time of past burning time and burning while stopping combustion while determining necessity of preheating due to energization of the electric heater based on these data, before operation The combustion time zone and electric
Control data such as the power supply to the
Compared with control data such as the combustion time zone
If there is, the stored control data is
Correct to match the control data. Then, the heater control means controls the energization of the electric heater based on the determination result of the determination means as described above . For this reason, the electric heater
Preheating is performed in accordance with the user's actual use time (combustion time), air temperature, etc., and during times when combustion is not necessary.
As a result, power consumption (energization of the electric heater) is reduced as much as possible.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

FIG. 2 shows a liquid fuel combustion device used for an oil fan heater. In FIG. 2, reference numeral 1 denotes a burner motor. A rotary atomizer 3 for atomizing kerosene is provided at one end of a rotary shaft 2 and a burner fan 4 for supplying combustion air is provided at the other end. 5 is a rotating atomized body 3
This is a vaporizer provided inside a vaporization chamber 6 for vaporizing the fuel which has been atomized by the process. The vaporizer 5 is made of an iron casting, aluminum die cast, or the like.

Reference numeral 7 denotes an electric heater buried below the vaporizer 5, 8 denotes a throttle plate provided above the vaporization chamber 6, 9 denotes a burner head (combustion section) mounted on the vaporizer 5, It has a plurality of flame openings 10 for ejecting a mixed gas of vaporized fuel and air flowing through the throttle plate 8 and performing gasification combustion.
Reference numeral 11 denotes a heat recovery ring provided on the outer periphery of the burner head 9 so as to face the flame port 10 and is formed integrally with the vaporizer 5. Reference numeral 12 denotes an electromagnetic pump for supplying oil supplied from a cartridge tank to an oil pan (not shown) to the rotary atomizer 3 via a fuel supply pipe 13; 14 a temperature sensor for detecting the temperature of the vaporizer 5; Is a control device, 16 is an ignition device,
F is a blower fan.

FIG. 3 shows the basic configuration of the control device 15 described above. In FIG. 3, reference numeral 18 denotes a microcomputer (hereinafter referred to as a microcomputer) which has a clock function and includes an A / D converter and a nonvolatile memory (EEPROM). A preheat switch 20, a timer switch 21, a temperature setting device 22, a temperature sensor 14, and a room temperature sensor 23 are provided. On the output side of the microcomputer 18, the electric heater 7, the ignition device 16, the burner motor 1, the electromagnetic pump 1
2 and a blower fan F are provided.

As shown in FIG.
Switch 19 is off and preheat switch 20 is on
When(During combustion stop), data such as combustion time zone and temperature
EnterEnergize the electric heater 7And when reburning,
Vaporization so that gasification combustion of liquid fuel can be started
Whether it is necessary to preheat vessel 5Judgment means
A control data generating means 24;This control data generator
The electric heater 7 based on the determination result of the step (determination means) 24
Control the energization ofHeater control means 25Control device with
PlaceIs provided. The control data generating means 24 has three
Input layers I1 to I3 and four intermediate layers H1 to H4
, Two output layers S1 and S2, and teacher signal generation means 2
6 andBefore operating the combustion equipmentTeacher data generating means 26Written in
Remembered combustion time zone and control data of electric heater 7
(Teacher data)During combustion when the combustion device is actually operated
Control data such as inter-zone, for example,Of the output layers Sl to S3
Compare with control data, and with teacher dataActual drivingControl
Output layer-intermediate layer, and intermediate layer
-Update the coupling coefficient between input layersThis error
Compensate for the difference and store the value before operating the combustion device.
Match the teacher data with the actual driving control data.
Work onError correction means 27,This allows
The control data generating means (control means) 24Has learning function
Neural network configuration.

A 24-hour timer 28 is connected to the input layer I1. This 24-hour timer 28 operates at time 0: 0.
The initial value becomes 0, and a count signal is added by one every 10 minutes thereafter, and the present time is input to the input layer I1. For example, at time 6:00, 36 is input from the 24-hour timer 28 to the input layer I1. This current time input is for absorbing a difference in usage frequency between the morning and afternoon time zones.

The input layer I2 is connected to a time difference signal generating means 29 for generating the closest deviation time between the present time and the combustion time zone of the previous day by a count value in units of 10 minutes. Of course, 0 is input to the input layer I2 when burning at the same time of the previous day. This time difference input is the most important factor in determining the heater control temperature and the necessity of energizing the heater described later.

In the input layer I3, the minimum room temperature of the previous day was 0.2 ° C.
A temperature signal generating means 30 for generating a digital signal for the step is connected. This temperature signal generating means 30
Among the days (0:00 to 24:00), the lowest room temperature among the room temperatures detected by the room temperature sensor 23 is stored, and the next day is transmitted as a temperature signal. This minimum room temperature input is effective in judging the seasonal use time zone.

The data input to the input layers I1 to I3 is adjusted by the coupling coefficient and transmitted to the intermediate layers H1 to H4. Intermediate layers H1 to H4
Calculates the sum of the inputs from the input layers I1 to I3,
The output is calculated (eg, a Sigmond function) based on the sum of these inputs. The outputs of the intermediate layers H1 to H4 are transmitted to the output layers S1 to S3 after being adjusted by the coupling coefficient. In the output layers S1 to S3, the sum of all the inputs is calculated, and the output is calculated (for example, a Sigmond function) based on the sum of these inputs, and the heater off level Toff, the heater on level Ton, and the heater energization required, respectively. It is output as control data of NO (ON / OFF).

The above-mentioned control means (control data generation means)
There are 24 types of learning that are performed in the factory and those that are performed in the field. Factory learning refers to the data of the current time, time difference and minimum room temperature described above and
The control data (teacher data) such as the combustion time zone and the energization time zone of the electric heater 7 is repeatedly input to generate, for example, control data that matches the use time zone of the combustion device in a standard home. FIG. 4 shows an example of this, in which , for example, a standard time period from midnight to 5:00 am
At home, they are sleeping and the possibility of heating is considered low, and the levels of Toff and Ton are lowered . Especially at night
Unless learning data for heating is input again
During the period when the possibility of combustion operation is low,
There is no need to keep the heater 7 on and preheat,
The power consumption was eliminated and energy was saved.

On the other hand, on-site learning means that the user gives an instruction with the operation switch 19 or the timer switch 21 to
The combustion time zone in which the combustion device was actually operated and the electric heater 7
The actual type the lowest room temperature such as data location energization control or the combustion device is installed in, before driving this control data
Stored combustion time zone and control data of electric heater 7
And compare the error between the teacher data and the operation control data.
The connection between the output layer and the intermediate layer and between the intermediate layer and the input layer
The microcomputer 1 is updated by the error correction means 27 for updating the
For the perfect teacher data in the 8, Ru <br/> Oh in which to perform the learning tailored to actual usage (zone burning time) of the combustion device. In this embodiment, both factory learning and on-site learning are performed. When these are used together, the control levels of Toff and Ton are as shown in FIG. 5, for example. This is a standard
At home, heating operation is performed from early morning to late afternoon.
If the heating operation is not performed in the afternoon in the daytime or during bedtime
Based on the operating time data, the user actually
During periods other than the operation period, the electric heater 7 is turned on.
Controller operates to reduce power and reduce power consumption
It means you are.

When the operation switch 19 is turned off, the preheating switch 20 is turned on, and the control data generating means 24 generates control data indicating that heater energization is required (ON), the heater control means 25 Is compared with the control data (Toff and Ton) and the temperature detected by the temperature sensor 14, and the energization of the electric heater 7 is controlled so that the temperature of the vaporizer 5 is maintained between Toff and Ton. Since the control data is determined by learning the actual use time period of the user, when the operation switch 19 is turned on, the gasification combustion is performed promptly while the electric heater 7 is turned on as shown in FIG. The amount can be minimized. Moreover,
Since the heater control temperature is determined while judging the time and season, there is a difference in power consumption between early spring and severe winter, and the energy saving effect is further improved.

In the above-described embodiment, the necessity (ON / OFF) of energization of the electric heater 7 is determined based on the learning result of the control data generating means 24. Have judgment function, Toff and To
When n is equal to or less than a predetermined value, it may be determined that the heater is not required to be energized, and the energization of the electric heater 7 may be stopped.

Further, the control data generating means 24 is provided with an output layer S
Steps 1 to S3 are provided so that the control data generation means 24 generates control data for the heater off level Toff, the heater on level Ton, and the necessity (ON / OFF) of heater energization. Is generated, and the heater control means 25 requires the heater to be energized (O
Even if the energization of the electric heater 5 is controlled at the predetermined heater off level Toff and the heater on level Ton when the control data of N) is issued, there is an energy saving effect.

Further, the above-mentioned control data generating means 24
A separate switch for using the control data of
While only the preheating switch 20 is turned on, the energization of the electric heater 7 may be controlled at all times, or a dedicated switch using only control data based on factory learning may be provided.

[0022]

As described above, the present invention is constructed as described above, and in a system in which the energization of the electric heater is controlled during the stop of combustion and the carburetor is preheated, the usability of the user is impaired as much as possible. The power consumption of the electric heater can be suppressed by energizing the electric heater in accordance with the user's use time zone, air temperature, and the like while preventing power consumption, thereby contributing to energy saving.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of the internal configuration of a microcomputer that also serves as a control data generating means (determining means) and a heater controlling means.

FIG. 2 is a schematic structural explanatory view of an embodiment of the present invention.

FIG. 3 is a block diagram illustrating a basic configuration of a control device.

FIG. 4 is an explanatory diagram of heater control characteristics based on factory learning.

FIG. 5 is an explanatory diagram of heater control characteristics obtained by using both factory learning and on-site learning.

FIG. 6 is an explanatory diagram of power consumption of an electric heater.

[Explanation of symbols]

 Reference Signs List 5 vaporizer 7 electric heater 18 microcomputer 24 control data generation means 25 heater control means

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-275218 (JP, A) JP-A-3-28627 (JP, A) JP-A-56-157727 (JP, A) JP-A-3-27527 84316 (JP, A) JP-A-62-106221 (JP, A) JP-A-62-106220 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F23N 5/00 F23N 5 / 20 F23D 11/44

Claims (1)

(57) [Claims] 1. A is heated and vaporized in a vaporizer with an electrical heater
Mixing fuel and the air, the liquid fuel combustion apparatus in which the gas mixture thereof so as to be combusted in the combustion section, the
The liquid fuel combustion device includes a determination unit for inputting data such as a combustion time zone and a temperature during the stop of combustion and determining whether or not preheating is necessary by energizing the electric heater, and an electric heater based on the determination result of the determination unit. Heater control means for controlling the energization of
A control device having, and, in the determination means operating
For example, the previously stored combustion time zone and energization of the electric heater
Control data and the combustion time zone when the combustion device was actually operated
Error correction by comparing with the control data of
Liquid fuel combustion apparatus, wherein a positive means are provided.