JP3096581B2 - Heating machine control method and control 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 method and a device for controlling a heating device, and more particularly to an oil heating device such as an oil fan heater, a gas heating device such as a gas fan heater, an electric heating device such as an electric fan heater, or the like. The present invention relates to a control method and a control device for a heating device such as a vehicle heater, which has an operation mode in which the operation is performed with a constant combustion amount or heating amount.

[0002]

2. Description of the Related Art Some conventional heating devices, such as oil fan heaters, gas fan heaters, and electric fan heaters, have a fixed operation mode in which the operation is performed with a constant combustion amount or heating amount (constant capacity). .

[0003] In such a heating apparatus, when operating in the fixed operation mode, the room temperature during operation reaches a predetermined temperature (for example, 35 ° C) set in advance, and the continuation time exceeds a predetermined time. In such a case, the operation is determined to be abnormal and the operation is stopped.

[0004]

By the way, in the above-mentioned conventional heating apparatus, since the predetermined temperature which is a reference when the operation is stopped is set to be higher, the room temperature is too high before the operation is stopped. There was a risk of danger.

[0005] Further, when the operation is stopped, there is a problem that, depending on the operating environment, the room temperature drops sharply and it is uncomfortable.

Accordingly, an object of the present invention is to provide a heating apparatus capable of preventing an extreme increase in room temperature and preventing discomfort due to a sudden decrease in room temperature even when operating in a fixed operation mode. A control method and a control device are provided.

[0007]

In order to solve the above problems, the invention according to claim 1 reduces the amount of combustion or the amount of heating.
Control of a heater with multiple operation modes to operate at constant
In the control method, the room temperature becomes the first during operation in one operation mode.
The first predetermined time at which the temperature has reached or exceeded the predetermined temperature
If the operation continues for more than an hour,
Also shift to the operation mode with less combustion or heating.
And the operation with the least amount of combustion or heating
The room temperature exceeds the first predetermined temperature even when operating in the reverse mode.
When the elapsed time continues for more than a second predetermined time
In the operation mode transition interruption step to suspend the temporary operation,
Shift to the operation mode with the least amount of combustion or heating
While driving or when the above operation is interrupted
The first operation is performed when the room temperature falls below the second predetermined temperature.
And an operation mode return step of returning to the mode .

The invention according to claim 2 is characterized in that the combustion amount or
Has multiple operation modes for operating with a constant heating amount
The control unit of the heater detects the room temperature and sends the room temperature detection signal.
Temperature detecting means for outputting a signal, and an operation mode of the heater
Operating mode selecting means for selecting a temperature, and detecting the room temperature
Selected by the operation mode selecting means based on the signal.
The room temperature is equal to or higher than the first predetermined temperature during operation in the first operation mode
The time at which the time has become equal to or longer than the first predetermined time
Of the plurality of operation modes,
Shifts to the operation mode with less heating and
Operation in the operation mode with the least amount of combustion or heating
Even when the room temperature reaches the first predetermined temperature, the
If it continues for more than the specified second predetermined time, temporary operation
Operating mode transition interrupting means for interrupting the maximum combustion amount
Alternatively, shift to the operation mode with less heating
The room temperature detection signal when the
That the room temperature falls below the second predetermined temperature based on the
An operation mode that returns to the one operation mode when detected.
Mode return means .

[0009]

[0010]

[0011]

According to the first aspect of the present invention, the operation mode shifts.
The interruption step is performed when the room temperature is in the first place while operating in one operation mode.
The first predetermined time, which is the time when the temperature has reached the fixed temperature or more
If the above operation continues, the most combustion amount among the multiple operation modes
Alternatively, shift to the operation mode with less heating
Operation in the operation mode with the least amount of combustion or heating.
The time when the room temperature becomes equal to or higher than the first predetermined temperature even if the
If the operation continues for the set second predetermined time or more,
Suspend the turn.

[0012]

[0013]

[0014]

The operation mode return step is performed when the operation mode is changed to the operation mode in which the combustion amount or the heating amount is the smallest and the operation is performed, or when the room temperature becomes lower than the second predetermined temperature when the operation is interrupted. Return to one operation mode.

Therefore, even when the room temperature becomes equal to or higher than the first predetermined temperature, the operation is not simply stopped, the operation is continued with the heating capacity lowered, and even if the heating capacity is lowered to the minimum, the room temperature is kept at the first temperature. Since the operation is interrupted only when the temperature does not drop below the predetermined temperature, a comfortable heating environment can be obtained without a sudden rise or fall in the room temperature.

[0017]

[0018]

[0019]

[0020]

According to the second aspect of the present invention, the room temperature detecting means detects the room temperature and outputs a room temperature detecting signal to the operation mode transition interruption means and the operation mode return means.

In parallel with this, when the operation mode of the heater is selected via the operation mode selection means, the operation mode transition interruption means operates in one of the operation modes selected by the operation mode selection means based on the room temperature detection signal. Room temperature is first during operation
When the time at which the temperature reaches or exceeds the predetermined temperature continues for a predetermined time or more, the operation mode is shifted to the operation mode with the smallest combustion amount or heating amount among the plurality of operation modes, and one of the operation modes is the combustion amount or heating maximum. If the operation mode is a small operation mode, the temporary operation is interrupted.

The operation mode return means is adapted to switch the room temperature to a second predetermined temperature or less based on the room temperature detection signal when the operation is being performed after shifting to the operation mode in which the combustion amount or the heating amount is the smallest or when the operation is interrupted. Is returned to one operation mode when it is detected that

Therefore, even when the room temperature becomes equal to or higher than the first predetermined temperature, the operation is not simply stopped, the operation is continued with the heating capacity lowered, and even if the heating capacity is lowered to the minimum, the room temperature is kept at the first temperature. Since the operation is interrupted only when the temperature does not drop below the predetermined temperature, a comfortable heating environment can be obtained without a sudden rise or fall in the room temperature.

[0025]

Preferred embodiments of the present invention will now be described with reference to the drawings . FIG. 1 shows a schematic block diagram of a control system of an oil fan heater as a heating device.

The control system of the oil fan heater includes an operation panel 1 for performing various operations, a thermistor 2 for detecting a room temperature, an electromagnetic pump 3 for supplying fuel, and a blower for supplying combustion air. The system includes a motor 4 for use, an electric heater 5 for gasifying oil as fuel, and a microcomputer 6 for controlling the oil fan heater.

FIG. 2 shows an external view of the operation panel.

The operation panel 1 includes an operation start button 10 for instructing operation start, an operation stop button 11 for instructing operation stop, a pulse rotary switch 12 for setting an operation mode, An operation lamp 13 to be turned on; an operation mode display panel 14 for displaying an operation mode; a ventilation instruction lamp 15 to be turned on when ventilation is necessary; a refueling instruction lamp 16 to be turned on when refueling is required; And a second-speed ignition switch 17 for ensuring ignition by shortening the time required for the ignition.

Here, the pulse type rotary switch 12 and the operation mode display panel 14 of the operation panel 1 will be described in detail.

The pulse type rotary switch 12 has a dial 12a, and is an automatic operation mode A in which the combustion amount is automatically varied by turning the dial 12a.
1 to A3 operation mode or fixed operation mode in which operation is performed with a fixed combustion amount, "weak", "weak", "weak medium", "medium"
Any of the six operation modes of “strong middle” and “strong” can be arbitrarily selected.

When this selection is made, the corresponding display lamps 14a to 14i on the operation mode display panel 14 are displayed.
Lights up, and the current operation mode is displayed.

Next, the operation of this embodiment will be described with reference to the timing chart of FIG.

In this case, it is assumed that the operator has selected the "medium" operation mode from among the fixed operation modes, and the room temperature upper limit temperature is set at 30 ° C. and the combustion return temperature is set at 20 ° C. I do.

[0034]

[0035]

[0036]

[0037]

[0038]

At time t0, operation is started in the "medium" operation mode, and if the room temperature detected by the thermistor 2 at time t1 exceeds the room temperature upper limit temperature of 30.degree. The microcomputer 6 starts counting for measuring the operating time of the microcomputer 6 when the measured time exceeds a first predetermined time T1 (for example, one minute) set in advance, that is, at time t2 in FIG. Then, the operation mode is shifted to the "weak" operation mode in which the combustion amount is the smallest.

At the same time, the microcomputer 6
, When it exceeds a second predetermined time period T2 (e.g., 1 minute) which starts counting for measuring the operating time of more than room temperature upper limit, the measured time is preset, i.e., FIG.
At time t3 in FIG.
Determines that the vehicle is in excess capacity even in the "weak" driving mode,
Stop operation (stop operation). When the first operation mode is the weak operation mode, the processing at time t2 may not be performed, and the process may immediately shift to the processing at time t3.

Thereafter, when the room temperature gradually decreases, and at time t4, the room temperature detected by the thermistor 2 reaches 20 ° C., which is the combustion return temperature, the microcomputer 6
Returns the operation mode to the "medium" operation mode selected by the operator again.

As described above , according to the present embodiment, even when the operation is performed in the fixed operation mode and the capacity in the operation mode in which the amount of combustion is the smallest is excessive, the room temperature is extremely increased. Can be prevented, and discomfort due to a sharp drop in room temperature can be prevented.

Although the present embodiment has been described with reference to the case of an oil fan heater, a heating device for burning a fuel such as a gas fan heater controls an amount of combustion so that an electric fan heater, a vehicle heater, etc. The present invention can be applied to a heating device having a built-in heating device by controlling the amount of heating.

[0044]

The invention according to claim 1 or claim 2
According to the invention described above, even when the room temperature becomes equal to or higher than the first predetermined temperature, which is the room temperature upper limit set value, the operation is not simply stopped, the operation is continued with the heating capacity lowered , and the heating capacity is maximized.
When the room temperature does not fall below the first predetermined temperature even if it is lowered
Since the operation is interrupted only during the period, a comfortable heating environment can be obtained without a sudden rise or fall of the room temperature.

[0045]

[Brief description of the drawings]

FIG. 1 is a schematic configuration block diagram of a control system of an oil fan heater.

FIG. 2 is an external view of an operation panel.

FIG. 3 is a timing chart illustrating the operation of the present embodiment .

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 operation panel 2 thermistor 3 electromagnetic pump 4 motor for blowing air 5 motor for combustion 6 microcomputer (microcomputer) 10 operation start button 11 operation stop button 12 pulse rotary switch 12a dial 13 operation lamp 14 operation mode display panel 15 ventilation instruction lamp 16 Refueling indicator lamp 16 17 second fast ignition switch

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-295514 (JP, A) JP-A-4-324026 (JP, A) JP-A-2-203125 (JP, A) 38381 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24H 3/04 305 F23N 5/00

Claims (2)

(57) [Claims] 1. Operation with constant combustion or heating
Control method of a heater having a plurality of operation modes for performing heating
The room temperature is equal to or higher than the first predetermined temperature during operation in one operation mode.
The time when the value has risen lasts for a first predetermined time or more.
The most combustion amount among the plurality of operation modes
Or shift to the operation mode with less heating,
Operate in the operation mode with the least amount of combustion or heating.
The time when the room temperature becomes equal to or higher than the first predetermined temperature even if the
If the operation continues for the set second predetermined time or more,
An operation mode transition interrupting step of interrupting the
To the operation mode in which the amount of
Room temperature during operation or when the operation is interrupted.
When the temperature drops below the predetermined temperature, the operation mode returns to the above-mentioned one operation mode.
And an operation mode return step of causing the heater to control the heating mode. 2. Operation with constant combustion or heating
Control device having multiple operation modes for performing heating
To detect the room temperature and output a room temperature detection signal.
And an operation mode for selecting an operation mode of the heater.
Mode operation means based on the room temperature detection signal.
Operate in one operation mode selected by mode selection means
Preset the time during which the room temperature reached the first predetermined temperature
The plurality of operations is continued when the first predetermined time
Operation mode with the least amount of combustion or heating among the modes
To the maximum combustion amount or
Room temperature is the first predetermined value even when operating in the operation mode with low calorific value
The time when the temperature becomes higher than the second predetermined time
If the operation mode continues, the operation mode shifts to suspend the temporary operation.
Line interrupting means, the least amount of combustion or heating
When operating in the operation mode or when
When the operation is interrupted, the room temperature becomes the second based on the room temperature detection signal.
If it is detected that the temperature has fallen below the predetermined temperature,
Operation mode return means for returning to the operation mode.
A control device for a heater.