JPH0718543B2 - Control equipment for heating equipment - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a heating device that varies a combustion amount according to room temperature.

2. Description of the Related Art Generally, a heating device called an automatic temperature control type automatically switches the combustion amount according to a room temperature detected by a built-in room temperature detector and a preset temperature. That is, when the room temperature is low, the combustion amount is increased, when the room temperature is high, the combustion amount is reduced, and even when the room temperature rises even at the minimum combustion amount, the temperature is controlled by turning it off with a certain differential.

Therefore, the user only needs to set the set temperature, and then the device automatically determines the combustion amount, raises the room temperature to the set temperature, and maintains the room temperature at that temperature.

FIG. 5 is a schematic diagram showing the structure of a conventional oil heating device.
Reference numeral 101 is a fuel tank, and the fuel oil is sucked up by an electromagnetic pump 102 and sent under pressure to a vaporizer 103. And this vaporizer 1
It is vaporized in 03 and mixed with the combustion air supplied from the combustion air supply device 104 to form a flame 105. The burned exhaust gas exchanges heat with the indoor air through the combustion cylinder 106 and the radiator 107 to heat the room, and then is exhausted to the outside. A room temperature detector 109 for controlling room temperature is attached to the outer frame 108.

FIG. 6 shows a conventional control circuit, where 110 is a power supply and 111
The control unit performs combustion control by performing temperature control of the carburetor 103, room temperature detection by the room temperature detector 109, and various timing controls. The control unit 111 first performs preheating by turning on the relay 112 at the start of operation, turns off the relay 112 when preheating is completed, and turns on the relay 113 to ion the combustion air supply device 104, the electromagnetic pump 102, and the igniter.
114 is energized to ignite and burn. The relay 115 is a two-circuit two-contact relay. When the room temperature detected by the room temperature detector 109 is lower than the set temperature, the relay 115 closes to a and a ′ side, and the combustion becomes strong combustion. Conversely, when the room temperature is higher than the set temperature, the relay 115 is Closed to the b and b'sides, the combustion becomes weak.

As described above, the conventional heating device attempts to keep the room temperature constant by automatically changing the combustion amount according to the room temperature.

SUMMARY OF THE INVENTION However, the above-described conventional configuration cannot meet the diversified demands of users due to the regional characteristics of using the heating device and the difference in individual feeling. In other words, as seen in the lifestyle of cold regions, there are cases where it is desirable to burn a certain amount of combustion without extinguishing it all night long. The automatic combustion amount control that handles the equipment like a black box does not match the sense, and it is difficult to connect the temperature display and the temperature sense.

The present invention solves the above-described conventional problems. In addition to automatic combustion amount control, the present invention can be manually fixed to a certain specific combustion amount, and a heating device that can widely respond to regional characteristics and individual senses. The first purpose is to do so. Further, as a second object, the second object is to enable the reliable switching of the combustion amount without the malfunction such that the operation is turned off during the switching of the combustion amount.

Means for Solving the Problems In order to achieve the above object, the control device for a heating device of the present invention is a combustor, a room temperature detecting means for detecting the temperature of a heated room, and a plurality of units for instructing a specific combustion amount. The specific combustion amount instruction unit, the combustion amount automatically based on the input signal of the difference between the room temperature detected by the room temperature detection means and the preset temperature, or the specific combustion amount signal from the specific combustion amount instruction unit A combustion amount control means for changing to a specific combustion amount based on the above, and a manual switch for sequentially switching the input signal to the combustion amount control means to the signals from the room temperature detection means and a plurality of specific combustion amount instruction parts for circulation. A delay means for causing the switching by the manual switch to be performed after a predetermined time when the manual switch is operated, and by operating the manual switch, the combustion amount by the automatic combustion amount control and a plurality of characteristics It is configured to circulate and switch to a combustion amount by constant combustion amount control.

Operation According to the present invention, the combustion amount can be automatically changed according to the detected room temperature, and a specific combustion amount can also be selected and fixed manually, so that the present invention has a wide range of regional and individual senses. Can handle. Further, when the combustion amount is switched by the manual switch, the output of the switching is output after the elapse of a predetermined time, so that the combustion can be surely switched without inadvertently stopping the combustion even if the automatic operation is performed during the switching.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a configuration diagram of the present embodiment, and FIG. 2 is a display portion of the same embodiment. 1 is an outer frame of an oil heating device, 2 is an oil leveler, and 3 is a discharge amount according to a pulse frequency to be applied. A changing electromagnetic pump, 4 is a carburetor, 5 is a combustion air supply device, 6
Is a combustor, and 7 is a room temperature detector attached to the outer frame 1, and an electric signal obtained by converting the room temperature is input to a control device 9 inside the panel 8. Various switches are arranged on the panel 8.

The control device 9 changes the pulse frequency output to the electromagnetic pump 3 according to the detected room temperature and the preset temperature set by the room temperature detecting means 10 that receives the output of the room temperature detector 7, and the combustion amount. Combustion amount control means 11 for changing
And a combustion air amount control means 12 for changing the combustion air amount accordingly, and a manual switch arranged on the panel 8.
It is composed of a switch processing means 14 for reading the switching status of 13 and a delay means 15 for delaying a predetermined time until the information of the switch processing means 14 is fixed. Changeover switch
Reference numeral 16 is a switch for instructing the combustion amount of the electromagnetic pump 3, and by switching operation of the manual switch 13, strong combustion 17, medium combustion 18, weak combustion 19, and automatic combustion amount control by the room temperature detecting means 10 are switched, and at the same time. The display 20 in FIG. 2 switches between strong, medium, weak, and automatic.

FIG. 3 shows a part of a concrete circuit of a main part. Control device 9
Is composed of a microcomputer 21 and peripheral circuits. The microcomputer 21 shown here is a CPU, R
It is a so-called one-chip microcomputer that has an OM, a RAM, and an input / output unit.

The room temperature detector 7 is connected to the input section of the microcomputer 21 via the A / D converter 22. As a result, the temperature signal from the room temperature detector 7 is converted into a binary code and read by the microcomputer 21. Reference numeral 23 denotes an operation switch for instructing the start of combustion, which is input to the microcomputer 21 like the manual switch 13. Reference numeral 24 is an AC power source, 25 is an electric heating element embedded in the vaporizer 4, 26 is a relay for turning ON / OFF the electric power to the electric heating element 25 with a signal from the microcomputer 21, and 27 is an igniter.

Next, the operation of this embodiment configured as described above will be described.
When the operation switch 23 is turned on, first, the relay 26 is turned on to energize the electric heating body 25 to perform preheating. When preheating is completed, the relay 26 is turned off, the igniter 27 is turned on, and at the same time, the combustion air amount control means 12 outputs from the output section to the combustion air supply device 5 at a certain rotation speed to control the combustion amount. Means 11
Outputs a constant pulse signal from the output section to the power supply pump 3 to perform ignition and combustion. After that, the combustion air amount control means 12
Will operate in conjunction with the combustion amount control means 11. Next, the operation at the time of combustion will be described using the flowchart of FIG.

First, when the combustion is started as described above, the combustion amount according to the difference between the room temperature detected by the room temperature detector 7 and the set temperature is calculated, and the combustion is performed with the calculated combustion amount.

Next, when the manual switch is operated during burning in this way, the input processing of the manual switch is performed in step 28, and the predetermined time (for example, 3 Check whether or not (sec) has elapsed and branch. That is, when the manual switch is operated, the input process is performed in step 28, and then the process proceeds to step 29 to check whether the timer started by the operation of the manual switch has passed a predetermined time, If it has not elapsed, the process of returning to step 28 is repeated, and when a predetermined time has elapsed, the process branches to step 30.

Here, as described above, if the manual switch is pressed again before the elapse of a predetermined time, the circulation switching from automatic to strong, medium, weak, and automatic is performed. And step 29
Since the predetermined time has not elapsed, the input processing by the manual switch is sequentially performed until the predetermined time elapses. Then, when a predetermined time elapses, the operation input process of the manual switch at that time is confirmed.

That is, when a predetermined time elapses, the routine proceeds to step 30 of the combustion amount control determination, and in this step 30, it is confirmed whether the input process at the time when the predetermined time has elapsed is the automatic combustion amount control. Then, the step when the above predetermined time has elapsed
If the operation input process with the 29 manual switches is, for example, automatic, step based on the difference between the room temperature detection means and the set temperature.
In step 31, the combustion amount is calculated, in step 32, the calculated combustion amount is converted into a pulse frequency, and in step 37, the pulse output is output for automatic combustion amount control. On the other hand, if the operation input process by the manual switch in step 28 when the above predetermined time has elapsed is not automatic, step 33 of the combustion amount change confirmation is determined.
Then, branch to either strong combustion 34, medium combustion 35, or weak combustion 36, and convert the combustion amount into a pulse frequency in step 32, output the pulse output in step 37, and perform the specific combustion amount. Control.

After the above step 37 is processed, the process proceeds to the next step 38 and then returns to the switch input process of step 28 again to perform the above series of processing routines.

Therefore, according to the configuration of the above embodiment, when it is desired to burn with medium combustion without extinguishing it overnight, it can be fixed to medium combustion by pressing the manual switch 13, and the combustion amount at the user's preference can be used. Can continue. It is also possible to press the manual switch 13 to automatically control the combustion amount by the room temperature detecting means 10. In this way, the user can select the control that is more convenient for the user, and the heating device can widely respond to the regional characteristics and individual feelings.

Moreover, since the control device of the present invention is provided with the delay means for switching the combustion amount after a predetermined time, for example, in the automatic combustion amount control at high room temperature, the combustion is changed from the weak combustion to the strong combustion under the condition that the operation is turned off. Even in this case, there is no erroneous operation such that the operation is turned off when it goes through the automatic operation on the way, and the switching of the combustion amount becomes reliable. In addition, a manual switch
The control described above can be performed by adding only one switch, and the cost is higher than when the automatic combustion control switch, three switches for strong combustion, medium combustion, and weak combustion, and a total of four switches are provided. There is also a big advantage.

In the above embodiment, the manual switch 13 is set to have three stages of combustion amount, but more or less combustion amount can be set. It is also possible to change the set value in an analog manner by using a variable resistor instead of the switch.

EFFECTS OF THE INVENTION As described above, according to the heating apparatus control device of the present invention, in addition to being able to automatically control the combustion amount by the room temperature detecting means, it is possible to manually set the combustion amount to the user's preference. ,
The user can select the control that is more convenient,
It becomes a heating device that can widely respond to each person's sense.
Furthermore, by providing the delay means, there is no malfunction such as operation being turned off when switching the combustion amount,
The switching operation becomes reliable. In addition, since only one manual switch is added, there is a great cost advantage over the case where one switch is provided for each combustion amount.

[Brief description of drawings]

FIG. 1 is a block diagram of a control device according to an embodiment of the present invention,
FIG. 2 is a configuration diagram of a display unit of the control device, FIG. 3 is a specific circuit diagram of the main part, FIG. 4 is a flowchart for explaining the operation during combustion, and FIG. 5 is a conventional heating system. FIG. 6 is a schematic configuration diagram showing a device, and FIG. 6 is a control circuit diagram of the same. 6 ... Combustor, 10 ... Room temperature detecting means, 11 ... Combustion amount control means, 13 ... Manual switch, 15 ... Delay means.

Claims (1)

[Claims] 1. A combustor, a room temperature detecting means for detecting a temperature of a heated room, a plurality of specific combustion amount instructing sections for instructing a specific combustion amount, and a room temperature detected by the room temperature detecting means. Combustion amount control means for changing the combustion amount to a specific combustion amount automatically or based on a specific combustion amount signal from a specific combustion amount instructing unit based on an input signal of a difference from the set temperature, and the combustion amount control A manual switch that sequentially switches the input signal to the means to the signals from the room temperature detecting means and the plurality of specific combustion amount instruction sections and circulates it, and the switching by the manual switch is performed after a predetermined time when the manual switch is operated. And a delaying means for controlling the heating device to circulate and switch the combustion amount by automatic combustion amount control and the combustion amount by a plurality of specific combustion amount controls by operating the manual switch.