JPH0250021A - Control device for heater - Google Patents

Abstract

PURPOSE:To obtain heating equipment which can meet various and broader requirements, such as locality and personal temperature sensation by allowing the manual fixation of the control means to a specific combustion volume in addition to automatic combustion control. CONSTITUTION:A combustion volume, which is equivalent to the difference between a room temperature detected by a room temperature detector 7 and a preset temperature, is calculated. The calculated combustion volume is converted into an equivalent pulse frequency, which is output to an electromagnetic pump 13 from an output means. A combustion air volume control means 12 operates, interlocking with a combustion volume control means 11. Operating mode is changed over by depressing a manual pushbutton switch 13 from auto to either strong, medium, or weak. It is converted into a pulse frequency which is equivalent to the combustion volume whose change is already established. The frequency is output to the electromagnetic pump 3 from the control means and branched into either strong combustion 17, medium combustion 18, or weak combustion 19 so that the combustion may be continued with any combustion volume selected by a user. In addition, this construction enables automatic combustion volume control based on a room temperature detector 10 by depressing the manual pushbutton switch 13.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a control device for heating equipment that varies the amount of combustion depending on room temperature.

BACKGROUND TECHNOLOGY Heating equipment that is generally referred to as an automatic temperature control type automatically switches the amount of combustion depending on the room temperature detected by a built-in room temperature detector and a preset temperature. In other words, when the room temperature is low, the amount of combustion is increased, when the room temperature is high, the amount of combustion is decreased, and when the room temperature rises even with the minimum amount of combustion, a certain differential is turned off to control the room temperature.

Therefore, all the user has to do is set the desired temperature, and the device will then automatically determine the combustion amount, raise the room temperature to the set temperature, and maintain the room temperature at that temperature.

FIG. 5 is a schematic diagram showing the structure of a conventional oil heating device.

101 is a fuel tank, and fuel oil is sucked up by an electromagnetic pump 102 and fed under pressure to a carburetor 103. Then, it is vaporized in this vaporizer 103 and mixed with combustion air supplied from a combustion air supply device 104 to form a flame 105. The combusted exhaust gas exchanges heat with the indoor air through the combustion tube 106 and the radiator 107 to heat the room, and is then exhausted to the outdoors. Furthermore, a room temperature detector 109 for controlling the room temperature is attached to the outer frame 10.

FIG. 6 shows a conventional control circuit, in which 110 is a power supply;
A control unit 111 performs combustion control by controlling the temperature of the carburetor 103, detecting the room temperature by the room temperature detector 109, and controlling various timings. The control unit 111 first performs preheating by turning on the relay 112 at the start of operation, and when the preheating is completed, turns off the relay 112 and turns on the relay 1.
Combustion air supply device 104 by turning on 13;
The electromagnetic pump 102 and the igniter 114 are energized and ignited,
Burn. Relay 1.15 is a 2-circuit 2-contact relay, and if the room temperature detected by the room temperature detector 109 is lower than the set temperature, a
, if the relay 115 is closed to the a' side, the combustion will be strong combustion; conversely, if the room temperature is higher than the set temperature, the relay 115 will be closed to the b' side, and the combustion will be weak combustion.

As described above, conventional heating equipment attempts to maintain a constant room temperature by automatically changing the amount of combustion depending on the room temperature.

Problems to be Solved by the Invention However, the conventional configuration described above cannot meet the diversified demands of users due to differences in regional characteristics and individual sensibilities in which heating equipment is used. In other words, especially as seen in the lifestyles of people living in the middle of nowhere, there are cases where people want to burn at a certain amount of combustion without turning it off all night, and there are also people who have used heating equipment according to the manual settings of high and low. Automatic combustion control, which treats heating equipment like a black box, does not suit the senses, and it is difficult to connect temperature display and temperature sensation.

The present invention solves these conventional problems, and in addition to automatic combustion amount control, a specific combustion can be manually fixed at "," making it possible to use heating equipment that can widely respond to regional characteristics and the sensibilities of each person. The first purpose is to ensure that the combustion amount can be switched reliably without malfunctions such as turning off the operation midway when changing the combustion amount. The second purpose is to

Means for Solving the Problems In order to achieve the above object, the heating equipment control device of the present invention first detects the room temperature with a room temperature detector, and controls the combustion amount to automatically change the combustion amount according to the detected room temperature. In addition to the means
The configuration is equipped with a manual switch that cancels this automatic combustion amount control and manually selects a specific combustion amount sequentially, and furthermore, when sequentially selecting the combustion amount with the manual switch, the switch output is switched after a predetermined period of time has elapsed. This configuration includes a delay means for outputting.

Function: With the above-described configuration, the present invention can automatically change the combustion amount according to the detected room temperature, and can also manually select and fix a specific combustion amount, so it can be widely adapted to regional characteristics and individual sensibilities. I can handle it.

In addition, when switching the combustion amount using the manual switch, the switching output is output after a predetermined period of time has elapsed, so even if the switch goes through automatic mode during switching, combustion will not be inadvertently stopped, and reliable switching can be performed.

EXAMPLES Hereinafter, examples of the present invention will be explained based on the accompanying drawings. Fig. 1 is a configuration diagram of this embodiment, and Fig. 2 is a display section of the same embodiment, where 1 is the outer frame of the oil heating equipment, 2 is the oil leveler, and 3 is the discharge amount according to the applied pulse frequency. 4 is a vaporizer, 5 is a combustion air supply device, 6 is a combustor, 7 is a room temperature detector attached to the outer frame 1, and an electric signal obtained by converting the room temperature is sent to a panel 8. It is input to the control device 9 inside the. Various switch groups are also arranged on the panel 8.

The control device 9 uses a room temperature detection means 10 that receives the output of the room temperature detector 7 as an input, and changes the pulse frequency output to the electromagnetic pump 3 according to the detected room temperature and a preset temperature to determine the combustion amount. combustion air amount control means 11 for changing the combustion air amount, combustion air amount control means 12 for changing the combustion air amount accordingly, and switch processing means 14 for reading the switching status of the manual switch 13 disposed on the panel 8.
and a delay means 15 for delaying the information for a certain period of time until the information of the switch processing means 14 is finalized.

The selector switch 16 is a switch for instructing the combustion amount of the electromagnetic pump 3, and by switching the manual switch 13, it is possible to switch between strong combustion 17, medium combustion 1 day, weak combustion 19, and automatic combustion amount control by the room temperature detection means 10. At the same time, the display 20 in FIG. 2 switches between strong, medium, weak, and automatic.

FIG. 3 shows a part of the main specific circuit. Control device 9
is composed of a microcomputer 21 and peripheral circuits. The microcomputer 21 shown here is C
It is a so-called one-chip microcomputer that has a PU, ROM, RAM, and input/output section.

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

Next, the operation of this embodiment configured as described above will be explained.

When the operation switch 23 is turned on, the relay 26 is first turned on to energize the electric heating element 25 for 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 an output from the output section to the combustion air supply device 5 at a certain rotation speed, thereby controlling the combustion amount. The means 11 outputs a constant pulse signal from the output section to the power pump 3 to perform ignition and combustion. Thereafter, the combustion air amount control means 12 will operate in conjunction with the combustion amount control means 11. Next, the operation during combustion will be explained using the flowchart of FIG. 4.

First, in step 28, the amount of combustion is calculated according to the difference between the room temperature detected by the room temperature detector 7 and the set temperature.

In step 29, the pulse frequency is converted into a pulse frequency corresponding to the combustion amount determined in step 28, and in step 3o, the pulse frequency is outputted from the output section to the electromagnetic pump 3. Step 31 is manual switch 13
It performs input processing and can be switched to either. In step 31, input processing is performed, and in step 32, which constitutes a delay means, it is checked whether a predetermined time (for example, 3 seconds) has elapsed after the input processing, and the process branches. That is, if the operator of the manual switch 13 presses the manual switch 13 to return to automatic mode, for example, before the predetermined time has elapsed, in step 32 it is determined that the predetermined time has not elapsed, so automatic combustion continues and the process moves to step 33. do.

On the other hand, if a predetermined period of time has elapsed after pressing the manual switch 13, step 34 is processed and the combustion amount change is confirmed. Step 35 converts it into a pulse frequency corresponding to the combustion amount determined in step 34, and outputs it from the output section to the electromagnetic pump 3 in step 36. Strong combustion 17, medium combustion 18, weak combustion 1
The process branches to either step 9 and proceeds to step 33.

According to the configuration of the above-mentioned embodiment, - If you want to burn with medium combustion without extinguishing it all night, the manual switch 13 (Yusu f umbrella 1
) By pressing , it is possible to fix the combustion to medium combustion, and the combustion can be set to the desired combustion amount by the user. Also,
It is also possible to press the manual switch 13 and automatically control the combustion amount using the room temperature detection means 10. in this way,
The user can select the control that is most convenient for the user, resulting in a heating device that can be broadly adapted to regional characteristics and the sensibilities of each person.

Moreover, since the control device of the present invention is provided with a delay means for switching the combustion amount after a predetermined time, for example, under conditions where the room temperature is high (and automatic combustion amount control would be turned off), weak combustion is changed to strong combustion. Even when switching to automatic mode, there will be no malfunctions such as turning the system off when switching to automatic mode.
The switching of the combustion amount becomes reliable. In addition, the above-mentioned control becomes possible by simply adding one manual switch 13, and a total of four switches are provided, including a switch for automatic combustion amount control, three switches each for strong combustion, medium combustion, and weak combustion. There is also a significant cost advantage compared to the conventional method.

In the above embodiment, three levels of combustion amount are set for the manual switch 13, but it is possible to set a larger or smaller amount of combustion. It is also possible to change the set value in an analog manner by using a variable resistor instead of a switch.

Effects of the Invention As described above, according to the heating equipment control device of the present invention, in addition to being able to automatically control the combustion amount using the room temperature detection means, it is also possible to manually set the combustion amount to the user's preference. ,
Users can choose the control that is most convenient for them, and
This heating device can accommodate a wide range of sensibilities for each person.

Further, by providing the delay means, there is no possibility of malfunction such as turning off the operation when switching the combustion amount, and the switching operation becomes reliable. In addition, since only one manual switch is required, there is a great cost advantage over the case where one switch is provided for each combustion amount.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a control device in an embodiment of the present invention;
Figure 2 is a configuration diagram of the display section of the control device, Figure 3 is a specific circuit diagram of the circuitry, Figure 4 is a flowchart explaining the operation during combustion, and Figure 5 is a conventional heating system. A schematic configuration diagram showing the equipment, and FIG. 6 is a conventional control circuit diagram. 6... Combustor, 10... Room temperature detection means, 11... Combustion amount control means, 13...
Manual switch, 15... Delay means. Name of agent: Patent attorney Shigetaka Awano and 1 other person6-
- Combustion word 10... - Room temperature detection means 11 - Combustion amount apportionment means Fig. 2 Foil Fig. 3 Fig. Fig. Fig.

Claims (2)

[Claims] (1) A combustor, a room temperature detection means for detecting the temperature in the heated room, and the combustion amount is automatically changed using the difference between the room temperature detected by the room temperature detection means and a preset temperature as an input signal. A control device for heating equipment, comprising a combustion amount control means for controlling the combustion amount, and a manual switch for canceling the automatic combustion amount control and sequentially switching to a plurality of specific combustion amounts. (2) The control device for heating equipment according to claim 1, further comprising a delay means for switching the combustion amount after a predetermined time from when the manual switch is operated.