JPH0875261A - Method and apparatus for controlling heater - Google Patents

Abstract

PURPOSE: To prevent an extreme rise or drop in a room temperature during the heater operates in a fixed operation mode by a method wherein the operation is shifted to an operation mode in which the amount of oil consumed is a minimum when the room temperature exceeding a specified temperature continues over a specified time during the operation and is returned to the normal mode when it falls below the second specified temperature. CONSTITUTION: When operation is fixed to a medium operation mode with the upper limit room temperature set at 30 deg.C and a burning return temperature at 20 deg.C, as the room temperature detected with a thermistor 2 exceeds 30 deg.C as the upper limit room temperature exceeds 30 deg.C, a microcomputer 6 starts to measure operation time beyond the upper limit room temperature. Then, when the measured time exceeds a preset specified time T (e.g. 1min.), the microcomputer 6 shifts the operation to the 'weak operation mode' with the least burning quantity. Thereafter, the room temperature lowers gradually and when it reaches 20 deg.C as burning return temperature, the microcomputer 6 returns the operation to the 'medium' operation mode again.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device control method and control 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, and an electric heating device such as an electric fan heater. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device such as a heater for an automobile, and a heating device control method and control device having an operation mode in which a combustion amount or a heating amount is kept constant.

[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 combustion amount or heating amount is constant (constant capacity). .

In such a heating device, when operating in a fixed operation mode, the room temperature during operation reaches a predetermined temperature (for example, 35 ° C.) set in advance, and the duration of the operation exceeds a predetermined time. In this case, it is determined that the operation is abnormal and the operation is stopped.

[0004]

By the way, in the above-mentioned conventional heating device, since the predetermined temperature which is the reference when the operation is stopped is set to a high temperature, the room temperature rises too much before the operation is stopped. There was a risk that it would be dangerous.

Further, when the operation is stopped, there is a problem that the room temperature is suddenly lowered depending on the operation environment, which is uncomfortable.

Therefore, an object of the present invention is to provide a heating device capable of preventing an extreme rise in room temperature and preventing discomfort due to a sudden drop in room temperature even when operating in a fixed operation mode. It is to provide a control method and a control device.

[0007]

In order to solve the above-mentioned problems, the invention according to claim 1 is a control method for a heating machine having a plurality of operation modes in which operation is performed with a constant combustion amount or heating amount. Room temperature is first during operation in operation mode
In the operation mode transition step of transitioning to an operation mode in which the combustion amount or the heating amount is the smallest among the plurality of operation modes when the time when the temperature is equal to or higher than the predetermined temperature continues for a predetermined time or longer, the highest combustion amount or The operation mode returning step of returning to the one operation mode when the room temperature becomes equal to or lower than the second predetermined temperature during the operation in the operation mode in which the heating amount is small.

According to a second aspect of the present invention, in a method of controlling a heater having a plurality of operation modes in which the combustion amount or the heating amount is constant, the room temperature is the first predetermined temperature during the operation in one operation mode. When the above time continues for a preset first predetermined time or longer, the operation mode is changed to the operation mode in which the combustion amount or the heating amount is the smallest among the plurality of operation modes, and the combustion amount or the heating amount is the smallest. If the room temperature is equal to or higher than the first predetermined temperature for more than the preset second predetermined time even after operating in the operation mode, the operation mode transition interruption step of interrupting the temporary operation, and the most combustion To the one operation mode when the operation is performed by shifting to the operation mode in which the heating amount or the heating amount is small, or when the room temperature becomes equal to or lower than the second predetermined temperature when the operation is interrupted. And operation mode return step of attributed and configured with a.

According to a third aspect of the present invention, there is provided a room temperature detecting means for detecting a room temperature and outputting a room temperature detection signal in a control device for a heating machine having a plurality of operation modes in which an operation is performed with a constant combustion amount or heating amount. An operation mode selecting means for selecting an operation mode of the heater, and a room temperature equal to or higher than a first predetermined temperature during operation in one operation mode selected by the operation mode selecting means based on the room temperature detection signal. When the remaining time has continued for a preset time or more, an operation mode transition means for transitioning to an operation mode in which the combustion amount or the heating amount is the smallest among the plurality of operation modes, and the combustion amount or the heating amount is the smallest. When it is detected that the room temperature has become equal to or lower than the second predetermined temperature based on the room temperature detection signal during the operation after shifting to the operation mode, the first operation is performed. And the operation mode return means for returning to the mode and configured with a.

In a fourth aspect of the present invention, there is provided a room temperature detecting means for detecting a room temperature and outputting a room temperature detection signal in a controller for a heating machine having a plurality of operation modes in which the combustion amount or the heating amount is kept constant. An operation mode selecting means for selecting an operation mode of the heater, and a room temperature equal to or higher than a first predetermined temperature during operation in one operation mode selected by the operation mode selecting means based on the room temperature detection signal. When the above-mentioned time has continued for a preset first predetermined time or longer, the operation mode is switched to the operation mode in which the combustion amount or the heating amount is the smallest among the plurality of operation modes, and the operation in which the combustion amount or the heating amount is the smallest is performed. If the time during which the room temperature rises above the first predetermined temperature continues for at least the second predetermined time set in advance even when operating in the mode, the operation mode that suspends the temporary operation When the operation is performed after the transition interruption step and the operation mode in which the combustion amount or the heating amount is the smallest is performed, or when the operation is interrupted, the room temperature becomes equal to or lower than the second predetermined temperature based on the room temperature detection signal. And a driving mode returning means for returning to the one driving mode when it is detected.

[0011]

According to the invention described in claim 1, the operation mode transition step is performed when the time during which the room temperature is equal to or higher than the first predetermined temperature during operation in one operation mode continues for a predetermined time or more. The operation mode in which the combustion amount or the heating amount is the least is selected from the plurality of operation modes.

The operation mode returning step returns to the original operation mode when the room temperature becomes equal to or lower than the second predetermined temperature when the operation mode is changed to the operation mode in which the combustion amount or the heating amount is the smallest. Restore.

Therefore, even if the room temperature exceeds the first predetermined temperature, the operation is not simply stopped and the heating capacity is lowered to continue the operation, so that the room temperature may be rapidly raised or lowered. And a comfortable heating environment can be obtained.

According to the second aspect of the invention, in the operation mode transition interruption step, the room temperature is the first during the operation in one operation mode.
When the time when the temperature becomes equal to or higher than the predetermined temperature continues for the first predetermined time or more set in advance, the operation mode is changed to the operation mode in which the combustion amount or the heating amount is the smallest among the plurality of operation modes, and If the time during which the room temperature becomes equal to or higher than the first predetermined temperature continues for the second predetermined time or longer even if the operation is performed in the small operation mode, the temporary operation is interrupted.

The operation mode returning step is performed when the operation is performed by shifting to the operation mode in which the combustion amount or the heating amount is the smallest, or when the room temperature becomes equal to or lower than the second predetermined temperature when the operation is interrupted. Return to the first operation mode.

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

According to the third aspect of the invention, the room temperature detecting means detects the room temperature and outputs the room temperature detection signal to the operation mode shifting means and the operation mode returning means.

In parallel with this, when the operation mode selection means selects the operation mode of the heater, the operation mode transition means operates in one operation mode selected by the operation mode selection means based on the room temperature detection signal. When the time during which the room temperature becomes equal to or higher than the first predetermined temperature continues for a preset predetermined time or longer, the operation mode in which the combustion amount or the heating amount is the smallest is selected from the plurality of operation modes.

Further, the operation mode returning means confirms that the room temperature becomes equal to or lower than the second predetermined temperature based on the room temperature detection signal 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. When detected, it returns to the one operation mode.

Therefore, even if the room temperature becomes higher than the first predetermined temperature, the operation is not simply stopped and the heating capacity is lowered to continue the operation, so that the room temperature rises or falls rapidly. And a comfortable heating environment can be obtained.

According to the fourth aspect of the present invention, the room temperature detecting means detects the room temperature and outputs the room temperature detection signal to the operation mode transition interrupting means and the operation mode returning means.

In parallel with this, when the operation mode of the heater is selected through the operation mode selection means, the operation mode transition interruption means selects one operation mode selected by the operation mode selection means based on the room temperature detection signal. Room temperature is first during operation
When the time when the temperature becomes equal to or higher than a predetermined temperature continues for a predetermined time or longer, the operation mode is changed to the operation mode in which the combustion amount or the heating amount is the smallest among the plurality of operation modes, and the one operation mode is the most combustion amount or the heating amount. If the operation mode is small, the temporary operation is suspended.

Further, the operation mode returning means changes the room temperature to the second predetermined temperature or less based on the room temperature detection signal when the operation mode is changed to the operation mode in which the combustion amount or the heating amount is the smallest or the operation is interrupted. When it is detected that it has become, the operation mode is restored.

Therefore, even when the room temperature becomes higher than the first predetermined temperature, the operation is not simply stopped, the heating capacity is lowered and the operation is continued, and even if the heating capacity is lowered to the minimum, the room temperature becomes 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 causing the room temperature to rise or drop suddenly.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described with reference to the drawings. First Embodiment FIG. 1 shows a schematic block diagram of a control system of an oil fan heater as a heating device.

The control system 100 of the oil fan heater is an operation panel 1 for performing various operations, a thermistor 2 for detecting room temperature, an electromagnetic pump 3 for fuel supply, and a combustion air supply. It is provided with a blower motor 4, an electric heater 5 for gasifying petroleum which is a fuel, and a microcomputer 6 for controlling the oil fan heater in a centralized manner.

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, and a driving mode An operation lamp 13 that lights up, an operation mode display panel 14 that displays an operation mode, a ventilation instruction lamp 15 that lights when ventilation is required, a refueling instruction lamp 16 that lights when refueling is required, and ignition. The second-speed ignition switch 17 for shortening the time until the ignition is completed and ensuring ignition.

Here, the pulse 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, which is an automatic operation mode in which the combustion amount is automatically varied by turning the dial 12a.
1 to A3 operation mode, or fixed operation mode that operates with a fixed amount of combustion "weak", "weak""weakmedium""medium"
It is possible to arbitrarily select one of the six driving modes of "medium" and "strong".

By performing this selection, the corresponding display lamps 14a to 14i of the operation mode display panel 14 are selected.
Either of them 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 the fixed operation modes, and that the room temperature upper limit temperature is 30 ° C and the combustion recovery temperature is 20 ° C. To do.

At time t0, when the operation is started in the "medium" operation mode and the room temperature detected by the thermistor 2 at time t1 exceeds the room temperature upper limit temperature of 30 ° C., the microcomputer 6 determines that the temperature exceeds the room temperature upper limit value. When the count for measuring the operating time of is started and the measured time exceeds a preset predetermined time T (for example, 1 minute),
That is, at time t2 in FIG. 3, the microcomputer 6 shifts the operation mode to the "weak" operation mode in which the combustion amount is the smallest.

After that, when the room temperature gradually decreases and the room temperature detected by the thermistor 2 reaches the combustion return temperature of 20 ° C. at the time t3, the microcomputer 6
Resets the operation mode again to the "medium" operation mode selected by the operator.

As described above, according to the first embodiment, even when the vehicle is operating in the fixed operation mode, the extreme rise of the room temperature is prevented and the discomfort caused by the sudden decrease of the room temperature is prevented. be able to. Second Example In the first example, when the room temperature reaches the room temperature upper limit temperature and continues for the predetermined time T or more, the operation mode or the relevant operation mode is changed to the fixed operation mode of the minimum combustion amount. Depending on the capacity of the heating device, the room temperature may not drop from the room temperature upper limit temperature even if the mode is changed to the fixed operation mode with the minimum combustion amount. Therefore, the second embodiment is to provide a comfortable heating environment by making sure control even in such a case.

Next, the operation of the second 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 the fixed operation modes, the room temperature upper limit temperature is 30 ° C, and the combustion recovery temperature is 20 ° C. To do.

At time t0, the 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 ° C., the microcomputer 6 detects the room temperature upper limit value or more. When the count for measuring the operating time of the time is started and the measured time exceeds the preset first predetermined time T1 (for example, 1 minute), that is, at the time t2 in FIG. , The operation mode is changed to the "weak" operation mode in which the amount of combustion is the smallest.

At the same time, again the microcomputer 6
Starts counting for measuring the operating time equal to or higher than the room temperature upper limit value, and when the measured time exceeds a preset second predetermined time T2 (for example, 1 minute), that is, at time t3 in FIG. At the microcomputer 6
Judges that the capacity is excessive even in the “weak” operation mode,
Stop the operation (stop the operation). When the first operation mode is the weak operation mode, the process at time t2 may not be performed, and the process may immediately proceed to time t3.

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

As described above, according to the second embodiment, even when the engine is operating in the fixed operation mode and the capacity in the operation mode in which the combustion amount is the smallest is excessive, the room temperature extremes are exceeded. It is possible to prevent the temperature from rising excessively and prevent discomfort caused by a sudden drop in room temperature.

In each of the above embodiments, the oil fan heater has been described. However, for a heating device such as a gas fan heater that burns fuel, an electric fan heater, an automobile heater, etc. can be controlled by controlling the amount of combustion. The present invention can be applied to the heating device having the above heating device built therein by controlling the heating amount.

[0044]

According to the invention described in claim 1 or the invention described in claim 3, the operation is not simply stopped even when the room temperature exceeds the first predetermined temperature which is the room temperature upper limit set value. Since the heating capacity is lowered and the operation is continued, a comfortable heating environment can be obtained without the room temperature rising or falling rapidly.

According to the invention of claim 2 or the invention of claim 4, even when the room temperature exceeds the first predetermined temperature which is the room temperature upper limit set value, the operation is not simply stopped and the heating is performed. The operation is stopped only when the room temperature does not drop from the first predetermined temperature even if the heating capacity is reduced to the minimum even if the heating capacity is lowered to the minimum, so that the room temperature does not rise or fall sharply. A comfortable heating environment can be obtained.

[Brief description of 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 explaining the operation of the first embodiment.

FIG. 4 is a timing chart explaining the operation of the second embodiment.

[Explanation of symbols]

 100 Oil fan heater control system 1 Operation panel 2 Thermistor 3 Electromagnetic pump 4 Blower motor 5 Combustion motor 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 indicator lamp 16 Refueling indicator lamp 16 17 second ignition switch

Claims (4)

[Claims] 1. A method for controlling a heater having a plurality of operation modes in which a combustion amount or a heating amount is kept constant, and a time during which the room temperature is equal to or higher than a first predetermined temperature during operation in one operation mode. An operation mode transition step of transitioning to an operation mode in which the combustion amount or the heating amount is the smallest among the plurality of operation modes when the operation continues for a predetermined time or more, and an operation mode in which the combustion amount or the heating amount is the smallest. The operation mode returning step of returning the operation mode to the one operation mode when the room temperature becomes equal to or lower than the second predetermined temperature during the operation. 2. A method of controlling a heater having a plurality of operation modes in which the combustion amount or the heating amount is kept constant, the time during which the room temperature is equal to or higher than a first predetermined temperature during operation in one operation mode. When the operation is continued for a preset first predetermined time or longer, the operation mode is changed to the operation mode in which the combustion amount or the heating amount is the smallest among the plurality of operation modes,
Even if the operation is performed in the operation mode in which the combustion amount or the heating amount is the smallest, the operation in which the temporary operation is interrupted is performed when the time during which the room temperature becomes the first predetermined temperature or more continues for the second predetermined time or more set in advance. The mode transition interruption step and the one operation when the operation is performed by transitioning to the operation mode in which the combustion amount or the heating amount is the smallest or when the room temperature becomes equal to or lower than the second predetermined temperature when the operation is interrupted. And a step of returning to an operation mode for returning to the mode. 3. A room temperature detecting means for detecting a room temperature and outputting a room temperature detection signal in a controller of a room heater having a plurality of operation modes in which a combustion amount or a heating amount is kept constant, and an operation of the heating device. An operation mode selecting means for selecting a mode, and a time period during which the room temperature becomes equal to or higher than a first predetermined temperature during operation in one operation mode selected by the operation mode selecting means based on the room temperature detection signal. Operation mode transition means for transitioning to an operation mode with the least amount of combustion or heating among the plurality of operation modes when the operation continues for a predetermined time or more, and an operation mode with the least amount of combustion or heating. When it is detected that the room temperature is lower than or equal to the second predetermined temperature based on the room temperature detection signal during operation, the operation mode is returned to the one operation mode. A control device for a heating machine, comprising: a switching mode returning means. 4. A room temperature detecting means for detecting a room temperature and outputting a room temperature detection signal in a controller for a heating machine having a plurality of operation modes for performing operation with a constant combustion amount or heating amount, and an operation of the heating device. An operation mode selecting means for selecting a mode, and a time period during which the room temperature becomes equal to or higher than a first predetermined temperature during operation in one operation mode selected by the operation mode selecting means based on the room temperature detection signal. Even if the operation mode is changed to the operation mode in which the combustion amount or the heating amount is the smallest among the plurality of operation modes when the operation is continued for the set first predetermined time or longer, the operation mode is performed in the operation mode in which the combustion amount or the heating amount is the smallest. An operation mode transition interruption means for interrupting the temporary operation when the time when the room temperature becomes equal to or higher than the first predetermined temperature continues for the second predetermined time which is set in advance; When the operation is performed by shifting to the operation mode in which the combustion amount or the heating amount is the smallest, or when the operation is interrupted, the room temperature becomes the second temperature based on the room temperature detection signal.
And a driving mode returning means for returning to the one driving mode when it is detected that the temperature becomes equal to or lower than the predetermined temperature.