JPH0861665A - Combustion controller - Google Patents

Abstract

PURPOSE: To control temperature preferable for user's sense by expediting the reaction of the rise of the room temperature when a set temperature is altered. CONSTITUTION: A combustion controller operates by deciding a combustion amount so that the room temperature becomes a set temperature by comparing the actual temperature with the set temperature, and comprises set temperature altering means 13, 14 for altering the set temperature by a user, and a control unit 10 for controlling the amount so as to become a strong combustion operation until the temperature reaches the set temperature when the set temperature is altered by the user, wherein the strong combustion is operated until the temperature reaches the set temperature when the set temperature is altered by the user.

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 combustion device such as a fan heater or a water heater, and more particularly to a combustion control device for performing strong combustion until the temperature reaches a set temperature. .

[0002]

2. Description of the Related Art In conventional combustion equipment, for example, an oil fan heater, a preset temperature set by the user in an automatic operation mode is compared with an actual room temperature to determine the combustion amount so that the room temperature reaches the preset temperature. It is supposed to do.

In this automatic operation mode, strong combustion is performed from a set temperature to a temperature lower than the set temperature, and thereafter, the strong combustion operation is stopped and the room temperature is controlled to a set temperature by proportional control or the like. Things are known.

[0004]

However, in this type of oil fan heater, the room temperature control band width for proportional control or the like is ± 2.0 with respect to the set temperature, for example, 20 ° C.
There is a range of ° C.

Therefore, the room temperature is the set temperature, for example, 20
When the temperature is stable around ° C, set the temperature to 1 ° C, for example.
Even if the temperature is raised, the combustion amount is gradually controlled to raise the temperature, the room temperature rises slowly, and the user feels the room temperature rise slowly, which is not preferable.

The present invention has been made in order to solve the above-mentioned problems, and the reaction of temperature rise when the set temperature is changed by the user is accelerated so that the user can control the temperature which is sensationally preferable. The purpose is to provide a possible combustion control device.

[0007]

According to the invention of claim 1, there is provided a combustion control device which compares a set temperature with an actual room temperature to determine a combustion amount so that the temperature becomes a set temperature and operates. And a control unit that controls the combustion amount so that the strong combustion operation is performed until the temperature reaches the set temperature when the set temperature is changed.

According to a second aspect of the present invention, there is provided a combustion control device which compares a set temperature with an actual temperature to determine a combustion amount so that the temperature becomes the set temperature, and operates the set value. When the temperature change means and the set temperature are changed,
A control unit that controls the combustion amount so that the strong combustion operation is performed until the temperature reaches the set temperature, and proportionally controls the temperature within a predetermined temperature range after the temperature reaches the set temperature. To do.

[0009]

According to the present invention, when the user changes the set temperature by the set temperature changing means, the control unit performs the strong combustion operation until the temperature (for example, room temperature in the case of the fan heater) reaches the set temperature. Control the amount of combustion. Thereby, even if the set temperature is changed, the reaction of the temperature can be accelerated.

According to the second aspect of the present invention, when the user changes the set temperature by the set temperature changing means, the control unit performs the strong combustion operation until the temperature (for example, room temperature in the case of the fan heater) reaches the set temperature. Then, the combustion amount is controlled, and after the temperature reaches the set temperature, the temperature is proportionally controlled within a predetermined temperature range. Thereby, even if the set temperature is changed, the reaction of the temperature can be accelerated.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows an example of a petroleum fan heater as a combustion apparatus provided with a preferred embodiment of the combustion control apparatus of the present invention.

The oil fan heater shown in FIG. 1 has an automatic operation mode in which the combustion amount is automatically adjusted by prioritizing the temperature. In this automatic operation mode, the combustion amount is adjusted so as to maintain the set room temperature. It is the mode to drive.

An air suction port 2 is provided on the rear surface of the outer case 1 of the oil fan heater shown in FIG. 1, and a warm air blowing port 3 is provided on the front surface of the outer case 1. A warm air fan 4 and a room temperature sensor 5 for measuring the room temperature are arranged at the air intake port 2.

A burner 6, a combustion cylinder 7, a burner motor 8, a fuel pump 9 and the like are provided inside the outer case 1 of FIG. An operation panel 20 is provided on the upper surface of the outer case 1, for example. This petroleum fan heater has a vaporizer that vaporizes kerosene, which is a liquid fuel, with an electric heater.

FIG. 2 shows a basic control block of the controller for the oil fan heater described above.

In FIG. 2, the microcomputer 10
(Hereinafter referred to as a microcomputer) is, for example, preferably A /
It has a D converter, a timepiece device, a data storage unit, and the like, and preferably the control data for energizing the electric heater of the carburetor is given based on the function of the neural network.

On the input side of the microcomputer 10, an operation switch key 11, an up key 13 and a down key 1 as set temperature changing means for the user to change the set temperature.
4, and the room temperature sensor 5 is connected. On the other hand, on the output side of the microcomputer 10, the burner motor 8, the fuel pump 9, the igniter 15, the warm air fan 4, the operation panel 20 are provided.
Is connected to the digital display 16.

When the operation switch key 11 is pressed once, the operation start and the operation end can be performed alternately.

When the user changes the set temperature, the microcomputer 10 controls the combustion amount so that the strong combustion operation is performed until the room temperature reaches the set temperature, and after the room temperature reaches the set temperature, the room temperature is controlled. It is a control unit that performs proportional control within a predetermined temperature range.

The microcomputer 10 controls the rotational speed of the burner motor 8 for driving the fuel blower and the drive frequency of the fuel pump 9. The fuel pump 9 is, for example, an electromagnetic fuel pump 9 and sends kerosene to the burner 6 side.

The combustion amount in the burner 6 is set by the microcomputer 10 varying the drive frequency of the motor of the fuel pump 9 in accordance with a signal indicating the number of revolutions of the burner motor 8, that is, the supplied air amount. . Microcomputer 10
Controls the rotation speed of the fan motor of the warm air fan 4 so as to match the combustion amount in the burner 6.

The burner 6 has a vaporizer for vaporizing kerosene, and the kerosene is vaporized in this vaporizer by energizing an electric heater. This electric heater is energized by a command from the microcomputer 10.

FIG. 3 shows the configuration of the operation panel 20.

The operation panel 20 has a digital display 1
6, an operation switch key 11, an up key 13 and a down key 14 which constitute a temperature setting means are arranged.

The digital display 16 is capable of digitally displaying, for example, a 4-digit number, and preferably, for example, an LED, a liquid crystal display device or a fluorescent display device can be adopted.

Next, the normal automatic operation mode in the above-described embodiment and an operation example when the user changes the set temperature in the normal automatic operation mode will be described with reference to FIG.

By pressing the operation switch key 11 in FIG. 3, the normal automatic operation mode is started (step S1 in FIG. 6).

When the user presses the operation switch key 11,
The electric heater is energized in response to a command from the microcomputer 10 to heat the vaporization portion of the burner 6. When the temperature detected by the temperature sensor of the burner 6 reaches a temperature suitable for vaporizing kerosene and the preheating is completed, the microcomputer 10 operates the burner motor 8 to pre-purge the burner 6.

When the prepurge is completed, the microcomputer 10
Activates the igniter 15 for a predetermined time and starts the fan motor of the warm air fan 4 and the fuel pump 9.

Thus, when the fuel air and kerosene are supplied to the burner 6, the kerosene is vaporized, mixed with the fuel air, and ignited by the igniter 15.

When the microcomputer 10 judges that the signal from the flame detector has ignited, the combustion amount in the burner 6 is set according to the temperature difference between the temperature set by the temperature setter and the room temperature detected by the room temperature sensor 5. .

In order to obtain this set combustion amount,
The microcomputer 10 controls the rotation speed of the burner motor 8 and the drive frequency of the fuel pump 9. Also,
In order to obtain a warm air volume that matches the set combustion amount,
The rotation speed of the fan motor of the warm air fan 4 is controlled.

In automatic operation mode, the current temperature (room temperature)
The microcomputer 6 controls the combustion amount so as to maintain the temperature at the set temperature, and operates with priority on the temperature. In this automatic operation mode, for example, by pressing a fluctuation key (not shown) at 20 ° C., the set temperature is 20 ° by 1 / f or chaos theory.
The combustion amount can be intentionally controlled so as to fluctuate slightly around C.

In this case, as shown in FIG. 4, in the automatic operation mode, the microcomputer 10 controls the combustion amount between MIN and MAX according to the temperature difference between the set temperature and the room temperature.

In the normal automatic operation mode of step S1 of FIG. 6, as shown in FIG. 5 (left side diagram), in the embodiment of the present invention, for example, the set temperature Tr
With ef set to 20 ° C, the combustion amount is controlled so that the strong combustion operation is performed until the temperature reaches 18 ° C, which is the lower control range.

In this state, the room temperature is equal to the set temperature Tref.
When the temperature is within the control range of ± 2 ° C with respect to 20 ° C, the room temperature is proportionally controlled so that the room temperature is maintained within this control range.

Here, the user presses the up key 13 shown in FIG. 3 to raise the set temperature Tref by 1 ° C., and then, as shown in FIG.
When the setting temperature Tref is changed to 21 ° C. as shown in FIG. 6 (step S2 in FIG. 6), the microcomputer 10 waits until the room temperature reaches the setting temperature Tref21 ° C. as shown in FIG. The combustion amount is controlled so that the engine operates strongly.

Conventionally, even if the setting is increased by 1 ° C. when the room temperature is stable near the set temperature Tref, only proportional control is gradually applied, and the increase in the room temperature is slow for the user to experience.

However, in the embodiment of the present invention, as described above, the set temperature Tre in which the room temperature is changed as shown in FIG.
Since the microcomputer 10 performs the strong combustion operation until the temperature reaches f21 ° C, the rising speed of the room temperature after the set temperature is changed can be increased.

As described above, the user operates the up key 1 shown in FIG.
When 3 is pressed to raise the set temperature Tref by 1 ° C.,
As shown in step S3 of step S10, the microcomputer 10 sets the strong combustion flag.

As shown in step S4 of FIG. 6, when the temperature sensor 5 of FIG. 2 detects that the room temperature reaches or exceeds the set temperature, the microcomputer 10
This strong combustion flag is cleared (step S5).

Otherwise, while this strong combustion flag is set to 1 (step S6), the microcomputer 10
The strong combustion operation is performed regardless of the room temperature control (step S
7) On the contrary, if the strong combustion flag is not set to 1, the microcomputer 10 causes 19 ° as shown in FIG. 5 (right diagram).
The room temperature is proportionally controlled between the temperature control range of C and 23 ° C (step S8).

As described above, in the embodiment of the present invention, when the user presses the up key 13 in FIG. 3 to change the set temperature Tref from 20 ° C. to 21 ° C. as shown in FIG. , The temperature of the microcomputer 10 is set to 21 ° C.
The strong combustion operation is performed until the temperature reaches.
Thereby, the reaction at room temperature when the set temperature is changed can be accelerated. Therefore, the user can experience the preferable way to raise the room temperature.

If necessary, the microcomputer 10 shown in FIG.
Can be operated in the low combustion mode of the set temperature in which the combustion amount in FIG. 4 is smaller than the value of MIN.

By the way, the present invention can be variously modified without departing from the scope of the claims.

In the embodiment of the present invention, the combustion control device is applied to the oil fan heater to raise the room temperature. However, the present invention is not limited to this. For example, the oil fan heater using kerosene as the liquid fuel. Besides, it can be applied to other types of combustion devices such as a gas fan heater that uses gas, or a water heater that raises the temperature of hot water.

[0048]

As described above, according to the first aspect of the present invention, when the user changes the set temperature by the set temperature changing means, the control section burns so as to perform the strong combustion operation until the temperature reaches the set temperature. Control the amount. As a result, even if the set temperature is changed, the reaction of the temperature can be accelerated, and it is possible for the user to control the temperature that is sensationally preferable.

According to the second aspect of the present invention, when the user changes the set temperature by the set temperature changing means, the control unit controls the combustion amount so that the strong combustion operation is performed until the temperature reaches the set temperature, and the temperature is changed. A controller that proportionally controls the temperature within a predetermined temperature range after reaching the set temperature. As a result, even if the set temperature is changed, the reaction of the temperature can be accelerated, and it is possible for the user to control the temperature that is sensationally preferable.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of an oil fan heater including a combustion control device of the present invention.

FIG. 2 is a diagram showing a control block of a combustion control device for the oil fan heater shown in FIG.

3 is a front view showing an operation panel of the oil fan heater of FIG. 1. FIG.

FIG. 4 is an explanatory diagram showing an example of combustion amount control characteristics of the oil fan heater of FIG. 1.

FIG. 5 is an explanatory diagram showing a state where the set temperature is raised from a certain value.

FIG. 6 is a flowchart showing an operation example of an automatic operation mode in the oil fan heater of FIG.

[Explanation of symbols]

 10 Microcomputer (microcomputer, control unit) 13 Up key (set temperature changing means) 14 Down key (set temperature changing means)

Claims (2)

[Claims] 1. A combustion control device that compares a set temperature with an actual temperature to determine a combustion amount so that the temperature becomes a set temperature and operates the set temperature, and a set temperature changing means for changing the set temperature. When the set temperature is changed, a control unit that controls the combustion amount so that the strong combustion operation is performed until the temperature reaches the set temperature,
A combustion control device comprising: 2. A combustion control device, which compares a set temperature with an actual temperature to determine a combustion amount so that the temperature becomes the set temperature, and operates, and a set temperature changing means for changing the set temperature, When the set temperature is changed, the control unit controls the combustion amount so that the strong combustion operation is performed until the temperature reaches the set temperature, and after the temperature reaches the set temperature, the temperature is proportionally controlled within a predetermined temperature range. A combustion control device comprising: